Protocol Registries

Protocol Registries
Protocol Registries
Protocol parameter registries represent the authoritative record of many of the codes and numbers contained in a variety of Internet protocols. We maintain these records in compliance with the associated technical standards and allocation policies, and we provide this service in coordination with the Internet Engineering Task Force (IETF).
To view or download individual protocol registries, navigate to the individual registries through the index below. Registry data is available for bulk retrieval via
Rsync
(recommended) or
FTP
To obtain a registration in an existing registry, or to modify existing registrations,
consult the relevant application form
. For information on creating new registries, please see
RFC 8126
for guidance.
Protocol/Registry
Defining Document/Comments
Access Node Control Protocol (ANCP)
ANCP Capability Types
RFC 6320
Standards Action
ANCP Command Codes
RFC 6320
Standards Action
ANCP Message Types
RFC 6320
Standards Action
ANCP Port Management Functions
RFC 6320
Standards Action
ANCP Result Codes
RFC 6320
0x0-0xFFF: IETF Review.
0x1000-0xFFFFFF: Specification Required.
(Expert: Unassigned)
ANCP Technology Types
RFC 6320
Expert Review (Expert: Unassigned)
ANCP TLV Types
RFC 6320
0x0000-0x1FFF: IETF Review.
0x2000-0xFFFF: Specification Required.
(Expert: Unassigned)
Joint GSMP / ANCP Version Registry
RFC 6320
Standards Action
ACL TLS
ACL (D)TLS Parameters
RFC 9761
Expert Review (Expert: Dan Wing, Per Andersson)
ACL DTLS Version Codes
RFC 9761
Expert Review (Expert: Dan Wing, Per Andersson)
ACL TLS Version Codes
RFC 9761
Expert Review (Expert: Dan Wing, Per Andersson)
Ad Hoc On Demand Distance Vector (AODV) Parameters
AODV Extension Types
RFC 3561
Standards Action
AODV Message Types (for messages sent to port 654)
RFC 3561
Standards Action
Address Family Numbers
Address Family Numbers
RFC 2453
RFC 2677
RFC 2858
1-16383: Standards Action.
16384-32767: First Come First Served.
Address Resolution Protocol (ARP) Parameters
Hardware Types
RFC 826
RFC 5494
requests for values below 256: Expert Review.
requests for more than one value: Expert Review.
requests for one value greater than 255: First Come First Served.
requests for one value, no value specified: First Come First Served.
(Expert: Carlos Pignataro)
Operation Codes
RFC 826
RFC 5494
IETF Review or IESG Approval
Protocol Type
RFC 826
RFC 5494
RFC 5342
The Ethertype space is administered as described in [RFC5342].
APEX Parameters
Applicable Exchange Core (APEX) Endpoint Applications
RFC 3340
Expert Review (Expert: Unassigned)
Applicable Exchange Core (APEX) Options
RFC 3340
Expert Review (Expert: Unassigned)
Applicable Exchange Core (APEX) Services
RFC 3340
Expert Review (Expert: Unassigned)
Application Access Protocol (ACAP) Numbers
ACAP Capabilities
RFC 2244
Specification Required (Expert: Unassigned)
ACAP Response Codes
RFC 2244
First Come First Served
Dataset Classes
RFC 2244
Standards Action or IESG-Approved Experimental RFC
Vendor Subtrees
RFC 2244
RFC 6075
First Come First Served
Application Bridging for Federated Access Beyond Web (ABFAB) Parameters
ABFAB URN Parameters
RFC 7833
IETF Review or Expert Review (Expert: Unassigned)
Application-Layer Traffic Optimization (ALTO) Protocol
ALTO Address Types
RFC 7285
IETF Review
ALTO Cost Metrics
RFC 7285
IETF Review
ALTO Cost Modes
RFC 9274
IETF Review
ALTO Cost Source Types
RFC 9439
IETF Review
ALTO Endpoint Property Types
RFC 7285
IETF Review
ALTO Entity Domain Types
RFC 9240
IETF Review
ALTO Entity Property Types
RFC 9240
IETF Review
ALTO Error Codes
RFC 7285
IETF Review
Authenticated Encryption with Associated Data (AEAD) Parameters
AEAD Algorithms
RFC 5116
1-32767: Specification Required.
32768-65535: Private Use.
(Expert: David McGrew, Bjoern Tackmann, Stanislav Smyshlyaev)
Authentication and Authorization for Constrained Environments (ACE)
ACE Authorization Server Request Creation Hints
RFC 9200
less than -65536: Private Use.
-65536 to -257: Specification Required.
-256 to 255: Standards Action.
256 to 65535: Specification Required.
greater than 65535: Expert Review.
(Expert: Göran Selander)
ACE Groupcomm Errors
RFC 9594
less than -65536: Private Use.
-65536 to -257: Specification Required.
-256 to 255: Standards Action With Expert Review.
256 to 65535: Specification Required.
greater than 65535: Expert Review.
(Expert: Francesca Palombini, Marco Tiloca, Rikard Höglund)
ACE Groupcomm Key Types
RFC 9594
less than -65536: Private Use.
-65536 to -257: Specification Required.
-256 to 255: Standards Action With Expert Review.
256 to 65535: Specification Required.
greater than 65535: Expert Review.
Strings of length 1: Standards Action With Expert Review.
Strings of length 2: Specification Required.
Strings of length greater than 2: Expert Review.
(Expert: Francesca Palombini, Marco Tiloca, Rikard Höglund)
ACE Groupcomm Parameters
RFC 9594
less than -65536: Private Use.
-65536 to -257: Specification Required.
-256 to 255: Standards Action With Expert Review.
256 to 65535: Specification Required.
greater than 65535: Expert Review.
Strings of length 1: Standards Action With Expert Review.
Strings of length 2: Specification Required.
Strings of length greater than 2: Expert Review.
(Expert: Francesca Palombini, Marco Tiloca, Rikard Höglund)
ACE Groupcomm Policies
RFC 9594
less than -65536: Private Use.
-65536 to -257: Specification Required.
-256 to 255: Standards Action With Expert Review.
256 to 65535: Specification Required.
greater than 65535: Expert Review.
Strings of length 1: Standards Action With Expert Review.
Strings of length 2: Specification Required.
Strings of length greater than 2: Expert Review.
(Expert: Francesca Palombini, Marco Tiloca, Rikard Höglund)
ACE Groupcomm Profiles
RFC 9594
less than -65536: Private Use.
-65536 to -257: Specification Required.
-256 to 255: Standards Action With Expert Review.
256 to 65535: Specification Required.
greater than 65535: Expert Review.
(Expert: Francesca Palombini, Marco Tiloca, Rikard Höglund)
ACE Groupcomm Rekeying Schemes
RFC 9594
less than -65536: Private Use.
-65536 to -257: Specification Required.
-256 to 255: Standards Action With Expert Review.
256 to 65535: Specification Required.
greater than 65535: Expert Review.
(Expert: Francesca Palombini, Marco Tiloca, Rikard Höglund)
ACE Profiles
RFC 9200
less than -65536: Private Use.
-65536 to -257: Specification Required.
-256 to 255: Standards Action.
256 to 65535: Specification Required.
greater than 65535: Expert Review.
(Expert: Göran Selander)
ACE Token Revocation List Errors
RFC 9770
less than -65536: Private Use.
-65536 to -257: Specification Required.
-256 to 255: Standards Action With Expert Review.
256 to 65535: Specification Required.
greater than 65535: Expert Review.
(Expert: Marco Tiloca)
ACE Token Revocation List Parameters
RFC 9770
less than -65536: Private Use.
-65536 to -257: Specification Required.
-256 to 255: Standards Action With Expert Review.
256 to 65535: Specification Required.
greater than 65535: Expert Review.
(Expert: Marco Tiloca)
Group OSCORE Admin Permissions
draft-ietf-ace-oscore-gm-admin-17
0-65535: Expert Review.
greater than 65535: Private Use.
(Expert: Unassigned)
Group OSCORE Roles
draft-ietf-ace-key-groupcomm-oscore-21
0-65535: Expert Review.
greater than 65535: Private Use.
(Expert: Unassigned)
OAuth Access Token Type CBOR Mappings
RFC 9200
less than -65536: Private Use.
-65536 or greater: Expert Review.
(Expert: Göran Selander)
OAuth Error Code CBOR Mappings
RFC 9200
less than -65536: Private Use.
-65536 or greater: Expert Review.
(Expert: Göran Selander)
OAuth Grant Type CBOR Mappings
RFC 9200
less than -65536: Private Use.
-65536 or greater: Expert Review.
(Expert: Göran Selander)
OAuth Parameters CBOR Mappings
RFC 9200
less than -65536: Private Use.
-65536 or greater: Expert Review.
(Expert: Göran Selander)
OAuth Token Introspection Response CBOR Mappings
RFC 9200
less than -65536: Private Use.
-65536 or greater: Expert Review.
(Expert: Göran Selander)
OSCORE Security Context Parameters
RFC 9203
less than -65536: Private Use.
-65536 to -257: Specification Required.
-256 to 255: Standards Action With Expert Review.
256 to 65535: Specification Required.
greater than 65535: Expert Review.
Strings of length 1: Standards Action With Expert Review.
Strings of length 2: Specification Required.
Strings of length greater than 2: Expert Review.
(Expert: Göran Selander)
Sequence Number Synchronization Methods
RFC 9594
less than -65536: Private Use.
-65536 to -257: Specification Required.
-256 to 255: Standards Action With Expert Review.
256 to 65535: Specification Required.
greater than 65535: Expert Review.
Strings of length 1: Standards Action With Expert Review.
Strings of length 2: Specification Required.
Strings of length greater than 2: Expert Review.
(Expert: Francesca Palombini, Marco Tiloca, Rikard Höglund)
Authentication and Key Agreement (AKA)
AKA-Version Namespace
RFC 3310
Expert Review (Expert: Vesa Torvinen (primary), Jari Arkko (secondary))
Authentication Method Reference Values
Authentication Method Reference Values
RFC 8176
Expert Review (Expert: John Bradley, Mike Jones)
Authentication Option Name Spaces
Algorithm Name Space Values
RFC 3118
IETF Review
Protocol Name Space Values
RFC 3118
IETF Review
RDM Name Space Values
RFC 3118
IETF Review
Authentication, Authorization, and Accounting (AAA) Parameters
Application IDs
RFC 6733
RFC 6942
0-16777215: Specification Required.
16777216-4294967294: First Come First Served.
(Expert: Unassigned)
AVP Codes
RFC 6733
block allocation (release of more than three AVPs at a time for a given purpose): IETF Review.
other allocation: Specification Required.
(Expert: Lionel Morand (primary), Jouni Korhonen (secondary))
AVP Flags Value
RFC 6733
Standards Action
AVP Specific Values
RFC 6733
IETF Review (unless otherwise specified)
Command Codes
RFC 6733
RFC 5719
0-255: Reserved for RADIUS backward compatibility.
256-8388607: IETF Review.
8388608-16777213: First Come First Served with specification.
Command Flags
RFC 6733
Standards Action
Mobility Capability Registry
RFC 5447
Specification Required (Expert: Jouni Korhonen)
QoS Profiles
RFC 5624
0-511: Standards Action.
512-32767: Specification Required.
32768-4294967295: Reserved.
(Expert: Unassigned)
Author Domain Signing Practices (ADSP) Parameters
ADSP Outbound Signing Practices
RFC 5617
Registry closed
ADSP Specification Tags
RFC 5617
Registry closed
Automated Certificate Management Environment (ACME) Protocol
ACME Account Object Fields
RFC 8555
Specification Required (Expert: Richard Barnes, Aaron Gable)
ACME Authority Token Challenge Types
RFC 9447
Specification Required (Expert: Mary Barnes, Aaron Gable)
ACME Authorization Object Fields
RFC 8555
Specification Required (Expert: Richard Barnes, Aaron Gable)
ACME Directory Metadata Auto-Renewal Fields
RFC 8739
Specification Required (Expert: Yaron Sheffer, Diego R. Lopez, Thomas Fossati, Aaron Gable)
ACME Directory Metadata Fields
RFC 8555
Specification Required (Expert: Richard Barnes, Aaron Gable)
ACME Error Types
RFC 8555
Specification Required (Expert: Richard Barnes, Aaron Gable)
ACME Identifier Types
RFC 8555
Specification Required (Expert: Richard Barnes, Aaron Gable)
ACME Order Auto-Renewal Fields
RFC 8739
Specification Required (Expert: Yaron Sheffer, Diego R. Lopez, Thomas Fossati, Aaron Gable)
ACME Order Object Fields
RFC 8555
Specification Required (Expert: Richard Barnes, Aaron Gable)
ACME RenewalInfo Object Fields
RFC 9773
Specification Required (Expert: Richard Barnes, Aaron Gable)
ACME Resource Types
RFC 8555
Specification Required (Expert: Richard Barnes, Aaron Gable)
ACME Validation Methods
RFC 8555
Specification Required (Expert: Richard Barnes, Aaron Gable)
STAR Delegation CSR Template Extensions
RFC 9115
Specification Required (Expert: Yaron Sheffer, Diego R. Lopez, Thomas Fossati, Aaron Gable)
Automatic Responses to Electronic Mail Parameters
Auto-Submitted Header Field Keywords
RFC 5436
Specification Required (Expert: Unassigned)
Auto-Submitted header field optional parameters
RFC 3834
IETF Review
Autonomic Control Plane (ACP)
ACP Address Type
RFC 8994
Standards Action
Autonomous System (AS) Numbers
16-bit Autonomous System Numbers
RFC 1930
RFC 5398
RFC 6996
RFC 7249
RIR request to the IANA or IETF Review. Allocated following the Global Policy published at
32-bit Autonomous System Numbers
RFC 1930
RFC 5398
RFC 6793
RFC 6996
RFC 7249
RIR request to the IANA or IETF Review. Allocated following the Global Policy published at
Special-Purpose AS Numbers
RFC 7249
IETF Review
Babel Routing Protocol
Babel Address Encodings
RFC 8966
0-223: Specification Required.
224-254: Experimental Use.
(Expert: Juliusz Chroboczek, Donald Eastlake)
Babel Hello Flags Values
RFC 8966
Specification Required (Expert: Juliusz Chroboczek, Donald Eastlake)
Babel Sub-TLV Types
RFC 8966
0-111: Specification Required.
112-126: Experimental Use.
128-239: Specification Required.
240-254: Experimental Use.
(Expert: Juliusz Chroboczek, Donald Eastlake)
Babel TLV Types
RFC 8966
0-223: Specification Required.
224-254: Experimental Use.
(Expert: Juliusz Chroboczek, Donald Eastlake)
Babel Update Flags Values
RFC 8966
Specification Required (Expert: Juliusz Chroboczek, Donald Eastlake)
Battery Technologies
Battery Technologies
RFC 7577
Expert Review (Expert: Unassigned)
BGP Monitoring Protocol (BMP) Parameters
BMP Initiation Information TLVs
RFC 7854
RFC 9069
RFC 9515
RFC 9736
0-32767: Standards Action.
32768-65530: First Come First Served.
65531-65534: Experimental Use.
BMP Message Types
RFC 7854
0-127: Standards Action.
128-250: Specification Required.
251-254: Experimental Use.
(Expert: John G. Scudder, Rex Fernando (rex), Paolo Lucente)
BMP Peer Down Reason Codes
RFC 7854
0-127: Standards Action.
128-250: Specification Required.
251-254: Experimental Use.
(Expert: John G. Scudder, Rex Fernando (rex), Paolo Lucente)
BMP Peer Flags for Loc-RIB Instance Peer Type 3
RFC 9069
Standards Action
BMP Peer Flags for Peer Types 0 through 2
RFC 7854
RFC 9069
Standards Action
BMP Peer Types
RFC 7854
0-127: Standards Action.
128-250: Specification Required.
251-254: Experimental Use.
(Expert: John G. Scudder, Rex Fernando (rex), Paolo Lucente)
BMP Peer Up Message TLVs
RFC 9736
0, 3-32767: Standards Action.
32768-65530: First Come First Served.
65531-65534: Experimental Use.
BMP Route Mirroring Information Codes
RFC 7854
RFC 9515
0-32767: Standards Action.
32768-65530: First Come First Served.
65531-65534: Experimental Use.
BMP Route Mirroring TLVs
RFC 7854
RFC 9515
0-32767: Standards Action.
32768-65530: First Come First Served.
65531-65534: Experimental Use.
BMP Statistics Types
RFC 7854
RFC 9515
0-32767: Standards Action.
32768-65530: First Come First Served.
65531-65534: Experimental Use.
BMP Termination Message Reason Codes
RFC 7854
RFC 9515
0-32767: Standards Action.
32768-65530: First Come First Served.
65531-65534: Experimental Use.
BMP Termination Message TLVs
RFC 7854
RFC 9515
0-32767: Standards Action.
32768-65530: First Come First Served.
65531-65534: Experimental Use.
BGP Shortest Path First (BGP SPF)
BGP-LS-SPF Link NLRI Attribute SPF Status TLV Values
RFC 9815
IETF Review
BGP-LS-SPF Node NLRI Attribute SPF Status TLV Values
RFC 9815
Expert Review (Expert: Jie Dong, Derek Yeung)
BGP-LS-SPF Prefix NLRI Attribute SPF Status TLV Values
RFC 9815
IETF Review
Bidirectional Forwarding Detection (BFD) Parameters
BFD Authentication Types
RFC 5880
Expert Review (Expert: Jeff Haas, Les Ginsberg)
BFD Diagnostic Codes
RFC 5880
Expert Review (Expert: Jeff Haas, Les Ginsberg)
Bit Index Explicit Replication (BIER)
BIER Algorithm
RFC 8401
RFC 9272
0-127: Standards Action.
128-239: Specification Required.
240-254: Private or Experimental Use.
(Expert: Les Ginsberg, Chris Hopps)
BIER Next Protocol Identifiers
RFC 8296
IETF Review
Blocks Extensible Exchange Protocol (BEEP) Parameters
BEEP Features
RFC 3080
Expert Review (Expert: Marshall T. Rose)
BEEP Profiles
RFC 3080
Expert Review (Expert: Marshall T. Rose)
Bootstrapping Remote Secure Key Infrastructures (BRSKI) Parameters
BRSKI Well-Known URIs
RFC 8995
Specification Required (Expert: Michael Richardson, Toerless Eckert)
Pledge BRSKI Status Telemetry Attributes
RFC 8995
Specification Required (Expert: Michael Richardson)
Border Gateway Protocol (BGP) Parameters
Additional PMSI Tunnel Attribute Flags
RFC 7902
Standards Action
ARP/ND Extended Community Flags
RFC 9047
Standards Action
BFD Discriminator Optional TLV Type
RFC 9026
0-175: IETF Review.
176-249: First Come First Served.
250-254: Experimental Use.
255: IETF Review.
BFD Mode
RFC 9026
0-175: IETF Review.
176-249: First Come First Served.
250-254: Experimental Use.
255: IETF Review.
BGP AIGP Attribute Types
RFC 7311
Standards Action
BGP BIER TLV and Sub-TLV Types
RFC 9793
First Come First Served
BGP CAR NLRI TLV Types
RFC 9871
Specification Required (Expert: Bruno Decraene, Swadesh Agrawal)
BGP CAR NLRI Types
RFC 9871
Specification Required (Expert: Bruno Decraene, Swadesh Agrawal)
BGP Data Collection Standard Communities
RFC 4384
IETF Review
BGP Error (Notification) Codes
RFC 4271
RFC 7313
Standards Action
BGP Error Subcodes
RFC 4271
Standards Action
BGP Graceful Restart Flags
RFC 4724
RFC 8538
Standards Action
BGP Graceful Restart Flags for Address Family
RFC 4724
RFC 8538
Standards Action
BGP Layer 2 Encapsulation Types
RFC 6624
0-127: Expert Review.
128-251: First Come First Served.
252-255: Experimental Use.
BGP Layer 2 TLV Types
RFC 6624
0-127: Expert Review.
128-251: First Come First Served.
252-255: Experimental Use.
BGP MCAST-VPN Route Types
RFC 7441
RFC 6514
Standards Action
BGP Message Types
RFC 4271
Standards Action
BGP Non-Transitive Extended Community Types
RFC 7153
0x40-0x7f: First Come First Served.
0xc0-0xcf: Reserved for Experimental Use.
0xd0-0xff: Standards Action.
BGP OPEN Optional Parameter Types
RFC 5492
IETF Review
BGP Outbound Route Filtering (ORF) Types
RFC 5291
0-63: Standards Action.
64-127: First Come First Served.
128-255: Vendor-Specific.
BGP Path Attributes
RFC 4271
Standards Action
BGP Prefix-SID Label-Index TLV Flags
RFC 8669
Expert Review (Expert: Acee Lindem, Hannes Gredler)
BGP Prefix-SID Originator SRGB TLV Flags
RFC 8669
Expert Review (Expert: Acee Lindem, Hannes Gredler)
BGP Prefix-SID TLV Types
RFC 8669
Expert Review (Expert: Acee Lindem, Hannes Gredler)
BGP Role Value
RFC 9234
IETF Review
BGP Route Refresh Subcodes
RFC 7313
0-127: Standards Action.
128-254: First Come First Served.
BGP SRv6 Service SID Flags
RFC 9252
IETF Review
BGP Transitive Extended Community Types
RFC 7153
RFC 9184
0x00-0x3f: First Come First Served.
0x80-0x82: First Come First Served.
0x83-0x8f: Reserved for Experimental Use.
0x90-0xbf: Standards Action.
BGP Well-known Communities
RFC 1997
RFC 8642
0x00000000-0x0000FFFF: Reserved.
0x00010000-0xFFFEFFFF: Private Use.
0xFFFF0000-0xFFFF8000: First Come First Served.
0xFFFF8001-0xFFFFFFFF: Standards Action.
Capability Codes
RFC 5492
RFC 8810
1-63: IETF Review.
64-238: First Come First Served.
239-254: Experimental Use.
Context-Specific Label Space ID Type
RFC 9573
First Come First Served
DF Alg
RFC 8584
RFC Required
DF Election Capabilities
RFC 8584
RFC Required
E-Tree Flags
RFC 8317
RFC Required
EVPN ESI Label Extended Community Flags
RFC 9746
IETF Review
EVPN Extended Community Sub-Types
RFC 7153
0x00-0xbf: First Come First Served.
0xc0-0xff: IETF Review.
EVPN Layer 2 Attributes Control Flags
RFC 8214
RFC Required
EVPN Link Bandwidth Value Units
draft-ietf-bess-evpn-unequal-lb-35
RFC Required
Generic Transitive Extended Community Part 2 Sub-Types
RFC 8955
RFC 9184
0x00-0xbf: First Come First Served.
0xc0-0xff: IETF Review.
Generic Transitive Extended Community Part 3 Sub-Types
RFC 8955
RFC 9184
0x00-0xbf: First Come First Served.
0xc0-0xff: IETF Review.
Generic Transitive Extended Community Sub-Types
RFC 7153
RFC 9184
0x00-0xbf: First Come First Served.
0xc0-0xff: IETF Review.
Layer2 Info Extended Community Control Flags Bit Vector
RFC 8395
IETF Review
Long-Lived Graceful Restart Flags for Address Family
RFC 9494
Standards Action
Multicast Flags Extended Community
RFC 9251
First Come First Served
Multihoming Redundancy Mode
RFC 9746
IETF Review
Non-Transitive Four-Octet AS-Specific Extended Community Sub-Types
RFC 7153
0x00-0xbf: First Come First Served.
0xc0-0xff: IETF Review.
Non-Transitive IPv4-Address-Specific Extended Community Sub-Types
RFC 7153
0x00-0xbf: First Come First Served.
0xc0-0xff: IETF Review.
Non-Transitive IPv6-Address-Specific Extended Community Types
RFC 7153
First Come First Served
Non-Transitive Opaque Extended Community Sub-Types
RFC 7153
0x00-0xbf: First Come First Served.
0xc0-0xff: IETF Review.
Non-Transitive Transport Class Extended Community Sub-Types
RFC 9832
0x00-0xbf: First Come First Served.
0xc0-0xff: IETF Review.
Non-Transitive Two-Octet AS-Specific Extended Community Sub-Types
RFC 7153
0x00-0xbf: First Come First Served.
0xc0-0xff: IETF Review.
P-Multicast Service Interface (PMSI) Tunnel Attribute Flags
RFC 7902
Standards Action
P-Multicast Service Interface Tunnel (PMSI Tunnel) Tunnel Types
RFC 7385
RFC 8317
0x00-0x7A: IETF Review.
0x7B-0x7E: Experimental Use.
0x80-0xFA: Composite Tunnel.
0xFB-0xFE: Experimental Use.
0xFF: Standards Action.
Region Identifiers ()
RFC 4384
Not defined
SFC Extended Community Sub-Types
RFC 9015
First Come First Served
SFC SPI/SI Representation Flags
RFC 9015
Standards Action
SFP Association Type
RFC 9015
First Come First Served
SFP Attribute TLVs
RFC 9015
First Come First Served
Split-Horizon Type
RFC 9746
IETF Review
SRv6 Service Data Sub-Sub-TLV Types
RFC 9252
0-127: IETF Review.
128-254: First Come First Served.
255: IETF Review.
SRv6 Service Sub-TLV Types
RFC 9252
0-127: IETF Review.
128-254: First Come First Served.
255: IETF Review.
Traffic Action Fields
RFC 8955
IETF Review
Transitive Four-Octet AS-Specific Extended Community Sub-Types
RFC 7153
0x00-0xbf: First Come First Served.
0xc0-0xff: IETF Review.
Transitive IPv4-Address-Specific Extended Community Sub-Types
RFC 7153
0x00-0xbf: First Come First Served.
0xc0-0xff: IETF Review.
Transitive IPv6-Address-Specific Extended Community Types
RFC 7153
First Come First Served
Transitive Opaque Extended Community Sub-Types
RFC 7153
0x00-0xbf: First Come First Served.
0xc0-0xff: IETF Review.
Transitive Transport Class Extended Community Sub-Types
RFC 9832
0x00-0xbf: First Come First Served.
0xc0-0xff: IETF Review.
Transitive Two-Octet AS-Specific Extended Community Sub-Types
RFC 7153
0x00-0xbf: First Come First Served.
0xc0-0xff: IETF Review.
Border Gateway Protocol (BGP) Tunnel Encapsulation
BGP Tunnel Encapsulation Attribute Sub-TLVs
RFC 9012
1-63: Standards Action.
64-125: First Come First Served.
126-127: Experimental Use.
128-191: Standards Action.
192-252: First Come First Served.
253-254: Experimental Use.
BGP Tunnel Encapsulation Attribute Tunnel Types
RFC 9012
First Come First Served
Color Extended Community Color-Only Types
RFC 9830
Standards Action
Color Extended Community Flags
RFC 9012
Standards Action
Embedded Label Handling Sub-TLVs
RFC 9012
Standards Action
Flags Field of NVGRE Encapsulation Sub-TLVs
RFC 9012
Standards Action
Flags Field of VXLAN Encapsulation Sub-TLVs
RFC 9012
Standards Action
SR Policy Binding SID Flags
RFC 9830
Standards Action
SR Policy Segment Flags
RFC 9830
IETF Review
SR Policy Segment List Sub-TLVs
RFC 9830
IETF Review
SR Policy SRv6 Binding SID Flags
RFC 9830
Standards Action
Border Gateway Protocol - Link State (BGP-LS) Parameters
BGP-LS IGP Prefix Flags
RFC 9552
Expert Review (Expert: Adrian Farrel, Hannes Gredler)
BGP-LS MPLS Protocol Mask
RFC 9552
Expert Review (Expert: Adrian Farrel, Hannes Gredler)
BGP-LS NLRI and Attribute TLVs
RFC 9552
0-255: Reserved (not to be allocated).
256-64999: Expert Review.
65000-65535: Private Use.
(Expert: Hannes Gredler (primary), Adrian Farrel (secondary))
BGP-LS NLRI Types
RFC 9552
1-64999: Expert Review.
65000-65535: Private Use.
(Expert: Hannes Gredler (primary), Adrian Farrel (secondary))
BGP-LS Node Flags
RFC 9552
Expert Review (Expert: Adrian Farrel, Hannes Gredler)
BGP-LS Protocol-IDs
RFC 9552
1-199: Expert Review.
200-255: Private Use.
(Expert: Hannes Gredler (primary), Adrian Farrel (secondary))
BGP-LS SR Policy Metric Types
RFC 9857
Expert Review (Expert: Stephane Litkowski, Jie Dong)
BGP-LS SR Segment Descriptor Types
RFC 9857
Expert Review (Expert: Matthew Bocci, Zafar Ali)
BGP-LS Well-Known Instance-IDs (OBSOLETE)
RFC 9552
Registry closed
SRv6 BGP EPE SID Flags
RFC 9514
Standards Action
BPF Instructions
BPF Instruction Conformance Groups
RFC 9669
Permanent: Standards Action or IESG Approval.
Provisional: Specification Required.
Historical: Specification Required.
(Expert: Alexei Starovoitov, David Vernet)
BPF Instruction Set
RFC 9669
Permanent: Standards Action or IESG Approval.
Provisional: Specification Required.
Historical: Specification Required.
(Expert: Alexei Starovoitov, David Vernet)
Building Blocks
Building Blocks
RFC 3048
Specification Required (Expert: Unassigned)
Bundle Protocol
Block Processing Control Flags
RFC 6255
RFC 9171
Specification Required (Expert: Scott Burleigh, Fred Templin)
BPSec BCB-AES-GCM AAD Scope Flags
RFC 9173
Specification Required (Expert: Ken McKeever, Edward Birrane)
BPSec BIB-HMAC-SHA2 Integrity Scope Flags
RFC 9173
Specification Required (Expert: Ken McKeever, Edward Birrane)
BPSec Security Context Identifiers
RFC 9172
Specification Required (Expert: Ken McKeever, Edward Birrane)
Bundle Administrative Record Types
RFC 7116
RFC 9713
Specification Required (Expert: Marc Blanchet, Keith Scott)
Bundle Block Types
RFC 6255
RFC 9171
Specification Required (Expert: Scott Burleigh, Fred Templin)
Bundle Custody Signal Reason Codes
RFC 6255
Specification Required (Expert: Scott Burleigh, Fred Templin)
Bundle Metadata Type Codes
RFC 6258
Specification Required (Expert: Rick Taylor)
Bundle Processing Control Flags
RFC 6255
RFC 9171
Specification Required (Expert: Scott Burleigh, Fred Templin)
Bundle Protocol TCP Convergence-Layer Message Types
RFC 7242
RFC Required
Bundle Protocol TCP Convergence-Layer REFUSE_BUNDLE Reason Codes
RFC 7242
RFC Required
Bundle Protocol TCP Convergence-Layer SHUTDOWN Reason Codes
RFC 7242
RFC Required
Bundle Protocol TCP Convergence-Layer Version 4 Message Types
RFC 9174
RFC Required
Bundle Protocol TCP Convergence-Layer Version 4 MSG_REJECT Reason Codes
RFC 9174
Specification Required (Expert: Brian Sipos, Rick Taylor)
Bundle Protocol TCP Convergence-Layer Version 4 SESS_TERM Reason Codes
RFC 9174
Specification Required (Expert: Brian Sipos, Rick Taylor)
Bundle Protocol TCP Convergence-Layer Version 4 Session Extension Types
RFC 9174
Expert Review (Expert: Brian Sipos, Rick Taylor)
Bundle Protocol TCP Convergence-Layer Version 4 Transfer Extension Types
RFC 9174
Expert Review (Expert: Brian Sipos, Rick Taylor)
Bundle Protocol TCP Convergence-Layer Version 4 XFER_REFUSE Reason Codes
RFC 9174
Specification Required (Expert: Brian Sipos, Rick Taylor)
Bundle Protocol TCP Convergence-Layer Version Numbers
RFC 7242
RFC Required
Bundle Protocol URI Scheme Types
RFC 9171
Standards Action
Bundle Status Report Flags
RFC 6255
RFC Required
Bundle Status Report Reason Codes
RFC 6255
RFC 9171
Specification Required (Expert: Scott Burleigh, Fred Templin)
CBHE Service Numbers
RFC 7116
0-63: Specification Required.
1024-65535: Specification Required.
(Expert: Marc Blanchet, Keith Scott)
Ciphersuite Flags
RFC 6257
Specification Required (Expert: Stephen Farrell, Edward Birrane)
Ciphersuite Numbers
RFC 6257
Specification Required (Expert: Stephen Farrell, Edward Birrane)
Ciphersuite Parameters and Results Type Registry
RFC 6257
Specification Required (Expert: Stephen Farrell, Edward Birrane)
Primary Bundle Protocol Version
RFC 6255
RFC Required
C-DNS DNS Capture Format
C-DNS Address Event Types
RFC 8618
Expert Review (Expert: Jim Hague, Sara Dickinson, John Dickinson)
C-DNS Response Flags
RFC 8618
Expert Review (Expert: Jim Hague, Sara Dickinson, John Dickinson)
C-DNS Storage Flags
RFC 8618
Expert Review (Expert: Jim Hague, Sara Dickinson, John Dickinson)
C-DNS Transports
RFC 8618
Expert Review (Expert: Jim Hague, Sara Dickinson, John Dickinson)
Caller-ID Numbering Plans
Caller-ID Numbering Plans Tokens
RFC 3939
Standards Action
Candidate Access Router Discovery (CARD) Parameters
AVP Type Registry
RFC 4065
Expert Review (Expert: Unassigned)
Experimental Mobility Protocol Subtype Registry
RFC 4065
Specification Required and IESG Review (Expert: Unassigned)
Layer 2 Access Technology Identifier Registry
RFC 4065
Specification Required (Expert: Unassigned)
Captive Portals
Captive Portal API Keys
RFC 8908
Specification Required (Expert: Tommy Pauly, Darshak Thakore, Martin Thomson)
CBOR Object Signing and Encryption (COSE)
COSE Algorithms
RFC 9053
RFC 9054
RFC 9864
Integers less than -65536: Private Use.
Integer values from -65536 to -257: Specification Required.
Integer values between -256 and 255: Standards Action With Expert Review.
Integer values from 256 to 65535: Specification Required.
Integer values greater than 65535: Expert Review.
Strings of length 1: Standards Action With Expert Review.
Strings of length 2: Specification Required.
Strings of length greater than 2: Expert Review.
(Expert: Göran Selander, Derek Atkins, Sean Turner)
COSE Elliptic Curves
RFC 9053
Integers less than -65536: Private Use.
Integer values -65536 to -257: Specification Required.
Integer values -256 to 255: Standards Action With Expert Review.
Integer values 256 to 65535: Specification Required.
Integer values greater than 65535: Expert Review.
(Expert: Göran Selander, Derek Atkins, Sean Turner)
COSE Header Algorithm Parameters
RFC 9053
Expert Review (Expert: Göran Selander, Derek Atkins, Sean Turner)
COSE Header Parameters
RFC 9052
Integers less than -65536: Private Use.
Integer values in the range -1 to -65536: delegated to the COSE Header Algorithm Parameters registry.
Integer values between 1 and 255: Standards Action With Expert Review.
Integer values from 256 to 65535: Specification Required.
Integer values greater than 65535: Expert Review.
Strings of length 1: Standards Action With Expert Review.
Strings of length 2: Specification Required.
Strings of length greater than 2: Expert Review.
(Expert: Francesca Palombini, Carsten Bormann)
COSE Key Common Parameters
RFC 9052
Integers less than -65536: Private Use.
Integer values in the range -65536 to -1: used for key parameters specific to a single algorithm
delegated to the COSE Key Type Parameters registry.
Integer values between 0 and 255: Standards Action With Expert Review.
Integer values from 256 to 65535: Specification Required.
Integer values greater than 65535: Expert Review.
Strings of length 1: Standards Action With Expert Review.
Strings of length 2: Specification Required.
Strings of length greater than 2: Expert Review.
(Expert: Francesca Palombini, Carsten Bormann)
COSE Key Type Parameters
RFC 9053
Expert Review (Expert: Göran Selander, Derek Atkins, Sean Turner)
COSE Key Types
RFC 9053
Expert Review (Expert: Göran Selander, Derek Atkins, Sean Turner)
COSE Verifiable Data Structure Algorithms
draft-ietf-cose-merkle-tree-proofs-18
Specification Required (Expert: Mike Jones, Orie Steele)
COSE Verifiable Data Structure Proofs
draft-ietf-cose-merkle-tree-proofs-18
Specification Required (Expert: Mike Jones, Orie Steele)
CBOR Web Token (CWT) Claims
CBOR Web Token (CWT) Claims
RFC 8392
Integer values from -256 to 255: Standards Action.
Integer values from -65536 to -257: Specification Required.
Integer values from 256 to 65535: Specification Required.
Integer values greater than 65535: Expert Review.
Strings of length 1: Standards Action.
Strings of length 2: Specification Required.
Strings of length greater than 2: Expert Review.
(Expert: Mike Jones, Hannes Tschofenig, Ludwig Seitz)
CWT Confirmation Methods
RFC 8747
Specification Required (Expert: Ludwig Seitz, Mike Jones)
Centralized Conferencing Manipulation Protocol (CCMP) Parameters
CCMP Message Types
RFC 6503
Specification Required (Expert: Unassigned)
CCMP Response Codes
RFC 6503
Specification Required (Expert: Unassigned)
CERT RR Certificate Types
CERT RR Certificate Types
RFC 4398
0x0000-0x00FF: Standards Action.
0xFF00-0xFFFF: Standards Action.
0x0100-0xFEFF: IETF Review.
Certificate Management Protocol (CMP)
CMP Well-Known URI Path Segments
RFC 9811
Specification Required (Expert: Hendrik Brockhaus, David von Oheimb, John Gray)
Channel-Binding Types
Channel-Binding Types
RFC 5056
Expert Review (Expert: Nicolas Williams)
Character Sets
Character Set Registrations
RFC 2978
Expert Review (Expert: Martin Dürst)
Character Sets
RFC 2978
Expert Review (Expert: Martin Dürst)
Character Sets Mailing List Information
RFC 2978
Expert Review
Cisco Service Level Assurance Protocol
Cisco SLA Protocol Address Family Registry
RFC 6812
Specification Required (Expert: Unassigned)
Cisco SLA Protocol Authenticator Modes Registry
RFC 6812
RFC Required
Cisco SLA Protocol CSLD Command Registry
RFC 6812
RFC Required
Cisco SLA Protocol Measurement-Type Registry
RFC 6812
RFC Required
Cisco SLA Protocol Roles Registry
RFC 6812
RFC Required
Cisco SLA Protocol Status Types Registry
RFC 6812
First Come First Served
Cisco SLA Protocol Version Number Registry
RFC 6812
RFC Required
CoAP-EAP
CoAP-EAP Cipher Suites
RFC 9820
-65536..-25: Specification Required.
-24..-21: Private Use.
-20..23: Standards Action with Expert Review.
24..65535: Specification Required.
(Expert: Marco Tiloca, Alan DeKok)
CoAP-EAP Information Elements
RFC 9820
0-23: Standards Action with Expert Review.
24-49: Private Use.
50-65000: Specification Required.
65001-65535: Experimental Use.
(Expert: Marco Tiloca, Alan DeKok)
Common Architecture Label IPv6 Security Option (CALIPSO)
CALIPSO Domain of Interpretation (DOI)
RFC 5570
1:0:0:0 - 254:255:255:255: Expert Review.
255:0:0:0 - 255:255:255:255: IESG Approval.
(Expert: Unassigned)
Common Name Resolution Protocol (CNRP) Parameters
Properties
RFC 3367
First Come First Served
Property Types
RFC 3367
First Come First Served
Status Messages
RFC 3367
First Come First Served
Common Open Policy Service (COPS) Protocol
A-types
RFC 3182
0-127: IETF Review.
128-255: Private Use.
ADMISSION_PRI (P-Type 0x05) Error Codes
RFC 6401
0-127: IETF Review.
128-240: First Come First Served.
C-Num and C-Type Values
RFC 2748
IETF Review
Client Types Values
RFC 2748
Client-type = 0 Flags and Error-SubCodes
RFC 4261
IETF Review
COPS-PR Object S-Num, S-Types, and Error-Codes
RFC 3084
IETF Review
M-Types, Reason Sub-Codes, and Error Sub-codes
RFC 2748
Values are assigned relative to the respective Client-type
Merge Strategies
RFC 6401
0-127: IETF Review.
128-240: First Come First Served.
P-types
RFC 2750
0-49151: IETF Review.
49152-53247: First Come First Served.
53248-65535: Reserved for Private Use.
R-Types, Reason-Codes, Report-Types, Decision Object Command-Codes/Flags, and Error-Codes
RFC 2748
IETF Review
Receiver Proxy Control Policy Element (P-Type 0x07) Control-Value field
RFC 5946
0-127: IETF Review.
128-240: First Come First Served.
Common Presence and Instant Messaging (CPIM) Headers
CPIM Headers
RFC 3862
Standards Action
Concise Binary Object Representation (CBOR)
CBOR Simple Values
RFC 8949
0-19: Standards Action.
32-255: Specification Required.
(Expert: Carsten Bormann)
CBOR Tags
RFC 8949
0-23: Standards Action.
24-32767: Specification Required.
32768-18446744073709551615: First Come First Served.
(Expert: Christian Amsüss, Thomas Fossati, Francesca Palombini, Carsten Bormann (backup))
Time Tag Map Keys
RFC 9581
Specification Required (Expert: Henk Birkholz, Esko Dijk)
Timescales
RFC 9581
RFC and Expert Review Required (Expert: Henk Birkholz, Esko Dijk)
Concise Data Definition Language (CDDL)
CDDL Control Operators
RFC 8610
name includes internal dot: IETF Review.
name does not include internal dot: Specification Required.
(Expert: Jeffrey Yasskin, Henk Birkholz)
Concise Software Identifier (CoSWID)
CoSWID Items
RFC 9393
0-32767: Standards Action with Expert Review.
32768-4294967295: Specification Required.
(Expert: Charles Schmidt, Jessica Fitzgerald-McKay, Henk Birkholz)
Connectivity Fault Management (CFM) OAM IETF Parameters
CFM OAM IETF OpCodes
RFC 7319
Standards Action
CFM OAM IETF TLV Types
RFC 7319
Standards Action
Constrained RESTful Environments (CoRE) Parameters
CoAP Codes
RFC 7252
Reserved ranges may be allocated in accordance with section 4.3 of
RFC 8126
CoAP Content-Formats
RFC 7252
RFC 9876
0-255: Expert Review.
256-9999: IETF Review with Expert Review or IESG Approval with Expert Review.
10000-19999: Expert Review.
20000-32999: First Come First Served.
33000-64997: Expert Review.
64998-64999: Reserved for Documentation.
65000-65535: Experimental Use.
(Expert: Esko Dijk (primary), Klaus Hartke (secondary), Carsten Bormann (secondary), Jaime Jimenez (secondary), Alexander Pelov (secondary))
CoAP Option Numbers
RFC 7252
0-255: IETF Review or IESG Approval.
256-2047: Specification Required.
2048-64999: Expert Review.
65000-65535: Experimental use (no operational use).
(Expert: Bilhanan Silverajan (primary), Klaus Hartke (secondary), Carsten Bormann (secondary), Jaime Jimenez (secondary), Alexander Pelov (secondary))
CoAP Signaling Codes
RFC 8323
IETF Review or IESG Approval
CoAP Signaling Option Numbers
RFC 8323
0-255: IETF Review or IESG Approval.
256-2047: Specification Required.
2048-64999: Expert Review.
65000-65535: Experimental use (no operational use).
(Expert: Bilhanan Silverajan (primary), Klaus Hartke (secondary), Alexander Pelov (secondary))
Custom Problem Detail Keys
RFC 9290
Expert Review (Expert: Thomas Fossati, Carsten Bormann)
Endpoint Type (et=) RD Parameter Values
RFC 9176
value starts with "core": IETF Review.
all other values: Specification Required.
(Expert: Carsten Bormann, Jaime Jiménez, Christian Amsüss)
Interface Description (if=) Link Target Attribute Values
RFC 6690
value starts with "core": IETF Review.
all other values: Specification Required.
(Expert: Carsten Bormann, Jaime Jimenez, Christian Amsüss)
OSCORE Flag Bits
RFC 8613
Expert Review (Expert: Francesca Palombini, Göran Selander, Christian Amsüss)
RD Parameters
RFC 9176
Expert Review (Expert: Carsten Bormann, Jaime Jiménez, Christian Amsüss)
Resource Type (rt=) Link Target Attribute Values
RFC 6690
value starts with "core": IETF Review.
all other values: Specification Required.
(Expert: Carsten Bormann, Jaime Jimenez, Christian Amsüss)
Standard Problem Detail Keys
RFC 9290
Specification Required (Expert: Thomas Fossati, Carsten Bormann)
Target Attributes
RFC 9423
Expert Review (Expert: Carsten Bormann, Marco Tiloca)
Content Delivery Network Interconnection (CDNI) Parameters
CDNI Capabilities Redirection Modes
RFC 8008
IETF Review
CDNI Capacity Limit Types
RFC 9808
Specification Required (Expert: Ben Rosenblum, Sanjay Mishra)
CDNI CI/T Error Codes
RFC 8007
Specification Required (Expert: Kevin Ma, Sanjay Mishra)
CDNI CI/T Trigger Types
RFC 8007
RFC Required
CDNI Logging Directive Names
RFC 7937
Specification Required (Expert: Kevin Ma)
CDNI Logging Field Names
RFC 7937
Specification Required (Expert: Kevin Ma)
CDNI Logging File Version
RFC 7937
Specification Required (Expert: Kevin Ma)
CDNI Logging Record-Types
RFC 7937
Specification Required (Expert: Kevin Ma)
CDNI Metadata Footprint Types
RFC 8006
Specification Required (Expert: Kevin Ma)
CDNI Metadata Protocol Types
RFC 8006
Specification Required (Expert: Kevin Ma)
CDNI Payload Types
RFC 7736
Specification Required (Expert: Kevin Ma, Sanjay Mishra)
CDNI RI Error Response Code
RFC 7975
Specification Required (Expert: Kevin Ma, Sanjay Mishra)
CDNI Telemetry Source Types
RFC 9808
Specification Required (Expert: Ben Rosenblum, Sanjay Mishra)
CDNI URI Signing Signed Token Transport
RFC 9246
Specification Required (Expert: Phil Sorber)
CDNI URI Signing Verification Codes
RFC 9246
Specification Required (Expert: Phil Sorber)
Content Disposition Values and Parameters
Content Disposition Parameters
RFC 2183
First Come First Served
Content Disposition Values
RFC 2183
Standards Track or IESG-Approved Experimental RFC
Handling Parameter Values
RFC 3204
Not Defined
Voice Parameter Values
RFC 2421
Not Defined
Content Security Policy Directives
Content Security Policy Directives
RFC 7762
Specification Required (Expert: Mike West)
Content-Centric Networking (CCNx)
CCNx Echo Reply Codes
RFC 9508
Specification Required (Expert: Dave Oran, Hitoshi Asaeda)
CCNx Hash Function Types
RFC 8609
Specification Required (Expert: Dave Oran, Hitoshi Asaeda)
CCNx Hop-by-Hop Types
RFC 8609
RFC Required
CCNx Interest Return Code Types
RFC 8609
Specification Required (Expert: Dave Oran, Hitoshi Asaeda)
CCNx Message Types
RFC 8609
RFC Required
CCNx Name Segment Types
RFC 8609
Specification Required (Expert: Dave Oran, Hitoshi Asaeda)
CCNx Packet Types
RFC 8609
RFC Required
CCNx Payload Types
RFC 8609
Specification Required (Expert: Dave Oran, Hitoshi Asaeda)
CCNx Reply Types
RFC 9344
RFC Required
CCNx Top-Level Types
RFC 8609
RFC Required
CCNx Validation Algorithm Types
RFC 8609
Specification Required (Expert: Dave Oran, Hitoshi Asaeda)
CCNx Validation-Dependent Data Types
RFC 8609
RFC Required
Context labels for Internet Messages
Internet Message Content Types
RFC 3458
RFC Required
Context Transfer Protocol (CXTP) Parameters
Context Transfer Profile Type Registry
RFC 4065
Expert Review (Expert: Unassigned)
Context Transfer Protocol Authorization Token Calculation Algorithms
RFC 4065
Expert Review (Expert: Unassigned)
Control And Provisioning of Wireless Access Points (CAPWAP) Parameters
AC DTLS Policy
RFC 5415
Standards Action
AC Information Type
RFC 5415
Expert Review (Expert: Margaret Cullen)
AC Security Types
RFC 5415
Standards Action
Alternate Tunnel Sub-elements
RFC 8350
Expert Review (Expert: Sri Gundavelli, Li Xue)
Alternate Tunnel-Types
RFC 8350
Specification Required (Expert: Sri Gundavelli, Li Xue)
CAPWAP Control Message Flags
RFC 5415
Expert Review (Expert: Margaret Cullen)
CAPWAP Header Flags
RFC 5415
Expert Review (Expert: Margaret Cullen)
CAPWAP IEEE 802.11 Message Types
RFC 5416
Expert Review (Expert: Margaret Cullen)
CAPWAP Message Element Type
RFC 5415
Expert Review (Expert: Margaret Cullen)
CAPWAP Message Types
RFC 5415
Expert Review (Expert: Margaret Cullen)
CAPWAP Transport Protocol Types
RFC 5415
Expert Review (Expert: Margaret Cullen)
CAPWAP Wireless Binding Identifier
RFC 5415
Expert Review (Expert: Margaret Cullen)
Data Transfer Mode
RFC 5415
Expert Review (Expert: Margaret Cullen)
Data Transfer Type
RFC 5415
Expert Review (Expert: Margaret Cullen)
Discovery Types
RFC 5415
Expert Review (Expert: Margaret Cullen)
ECN Support
RFC 5415
Expert Review (Expert: Margaret Cullen)
IEEE 802.11 Antenna Combiner
RFC 5416
Expert Review (Expert: Margaret Cullen)
IEEE 802.11 Antenna Selection
RFC 5416
Expert Review (Expert: Margaret Cullen)
IEEE 802.11 Auth Type
RFC 5416
Expert Review (Expert: Margaret Cullen)
IEEE 802.11 Encryption Capabilities
RFC 5416
Expert Review (Expert: Margaret Cullen)
IEEE 802.11 Key Status
RFC 5416
Expert Review (Expert: Margaret Cullen)
IEEE 802.11 QoS
RFC 5416
Expert Review (Expert: Margaret Cullen)
IEEE 802.11 Session Key Flags
RFC 5416
Expert Review (Expert: Margaret Cullen)
IEEE 802.11 Split MAC Profile
RFC 7494
Expert Review (Expert: Unassigned)
IEEE 802.11 Tagging Policy
RFC 5416
Expert Review (Expert: Margaret Cullen)
IEEE 802.11 WTP Radio Fail
RFC 5416
Expert Review (Expert: Margaret Cullen)
IEEE 802.11 WTP Radio Type
RFC 5416
Expert Review (Expert: Margaret Cullen)
Radio Admin State
RFC 5415
Expert Review (Expert: Margaret Cullen)
Radio Failure Causes
RFC 5415
Expert Review (Expert: Margaret Cullen)
Radio Operational State
RFC 5415
Expert Review (Expert: Margaret Cullen)
Result Code
RFC 5415
Expert Review (Expert: Margaret Cullen)
Returned Message Element Reason
RFC 5415
Expert Review (Expert: Margaret Cullen)
WTP Board Data Type
RFC 5415
Expert Review (Expert: Margaret Cullen)
WTP Descriptor Type
RFC 5415
Expert Review (Expert: Margaret Cullen)
WTP Fallback Mode
RFC 5415
Expert Review (Expert: Margaret Cullen)
WTP Frame Tunnel Mode
RFC 5415
Expert Review (Expert: Margaret Cullen)
WTP MAC Type
RFC 5415
Expert Review (Expert: Margaret Cullen)
WTP Radio Stats Failure Type
RFC 5415
Expert Review (Expert: Margaret Cullen)
WTP Reboot Stats Failure Type
RFC 5415
Expert Review (Expert: Margaret Cullen)
ControLling mUltiple streams for tElepresence (CLUE)
CLUE Message Types
RFC 8847
Specification Required (Expert: Simon Pietro Romano)
CLUE Response Codes
RFC 8847
Specification Required (Expert: Simon Pietro Romano)
CLUE Schema
RFC 8846
Expert Review (Expert: Simon Pietro Romano)
CLUE Schema
RFC 8846
Expert Review (Expert: Simon Pietro Romano)
CLUE Schema
RFC 8846
Expert Review (Expert: Simon Pietro Romano)
CLUE Schema
RFC 8846
Expert Review (Expert: Simon Pietro Romano)
Cryptographic Suites for IKEv1, IKEv2, and IPsec
Cryptographic Suites for IKEv1, IKEv2, and IPsec
RFC 4308
Expert Review and RFC Required (Expert: Tero Kivinen)
Cryptographically Generated Addresses (CGA) Message Type Name Space
CGA Extension Type Tags
RFC 3972
RFC 9374
First Come First Served
CGA Extension Type Values
RFC 4581
Standards Action
CGA SEC
RFC 4982
Standards Action
Data Channel Establishment Protocol (DCEP) Parameters
Channel Types
RFC 8832
RFC Required
Message Types
RFC 8832
RFC Required
Data Link Switching Client Access Protocol (DCAP) Parameters
Data Link Switching Protocol Frame Codes
RFC 2114
RFC Required
Data Link Switching Protocol Sender Capability Codes
RFC 2114
RFC Required
Data Structure for the Security Suitability of Cryptographic Algorithms (DSSC)
Cryptographic Algorithms
RFC 5698
First Come First Served
Parameter Definitions
RFC 5698
RFC Required
Datagram Congestion Control Protocol (DCCP) Parameters
Ack Vector States
RFC 4340
Standards Action
CCID2-specific Feature Numbers (128-255)
RFC 4341
Standards Action
CCID2-specific Option Types (128-255)
RFC 4341
Standards Action
CCID2-specific Reset codes (128-255)
RFC 4341
Standards Action
CCID3-specific Feature Numbers (128-255)
RFC 4342
Standards Action
CCID3-specific Option Types (128-255)
RFC 4342
Standards Action
CCID3-specific Reset codes (128-255)
RFC 4342
Standards Action
CCID4-specific Feature Numbers (128-255)
RFC 5622
Standards Action
CCID4-specific Option Types (128-255)
RFC 5622
Standards Action
CCID4-specific Reset codes (128-255)
RFC 5622
Standards Action
Congestion Control Identifiers
RFC 4340
0-1: IETF Review (IETF RFC publication).
4-247: IETF Review (IETF RFC publication).
248-254: Reserved.
255: IETF Review (IETF RFC publication).
Drop Codes
RFC 4340
Standards Action
Feature Numbers
RFC 4340
10-119: IETF Review (IETF RFC publication).
120-126: Reserved.
127: IETF Review (IETF RFC publication).
128-255: CCID-specific codes.
MP-DCCP Versions
RFC 9897
RFC Required
Multipath Key Type
RFC 9897
RFC Required
Multipath Options
RFC 9897
RFC Required
Option Types
RFC 4340
3-30: IETF Review (IETF RFC publication).
45-119: IETF Review (IETF RFC publication).
120-126: Reserved.
127: IETF Review (IETF RFC publication).
128-255: CCID-specific codes.
Packet Types
RFC 4340
Standards Action
Reset Codes
RFC 4340
12-119: IETF Review (IETF RFC publication).
120-126: Reserved.
127: IETF Review (IETF RFC publication).
128-255: CCID-specific codes.
Service Codes
RFC 4340
Specification Required or First Come First Served (Expert: Eddie Kohler)
Datagram Transport Layer Security (DTLS) Extension to Establish Keys for Secure Real-time Transport Protocol (SRTP)
DTLS-SRTP Protection Profiles
RFC 5764
Specification Required (Expert: Unassigned)
Delivery Status Notification (DSN) Types
Address Types
RFC 3461
RFC 3464
RFC Required
Diagnostic Types
RFC 3461
RFC 3464
RFC Required
MTA Name Types
RFC 3461
RFC 3464
RFC Required
DetNet Associated Channel Header (d-ACH) Flags
DetNet Associated Channel Header (d-ACH) Flags
RFC 9546
IETF Review
Device Identification
DEV URN Subtypes
RFC 9039
Specification Required or IESG Approval (Expert: Jari Arkko, Jaime Jimenez)
Differentiated Services Field Codepoints (DSCP)
Differentiated Services Field Codepoints (DSCP)
RFC 2474
RFC 3260
ECN Field (Bits 6-7)
RFC 3168
RFC Required
Directory System Names
Distinguished Names
RFC 1779
Closed see
RFC 4520
Distributed Denial-of-Service Open Threat Signaling (DOTS) Signal Channel
DOTS Signal Channel Attack Status Codes
RFC 9132
Standards Action
DOTS Signal Channel CBOR Key Values
RFC 9132
1-127: IETF Review.
128-255: IETF Review.
256-16383: IETF Review.
16384-32767: Specification Required.
32768-49151: IETF Review.
49152-65535: Private Use.
(Expert: Nik Teague, Mohamed Boucadair, Andrew Mortensen, Tirumaleswar Reddy)
DOTS Signal Channel Conflict Cause Codes
RFC 9132
Standards Action
DOTS Signal Channel Conflict Status Codes
RFC 9132
Standards Action
DOTS Signal Channel Status Codes
RFC 9132
Standards Action
Distributed Node Consensus Protocol (DNCP)
DNCP TLV Types
RFC 7787
Standards Action
HNCP TLV Types
RFC 7788
RFC Required
DNS-Based Authentication of Named Entities (DANE) Parameters
TLSA Certificate Usages
RFC 6698
RFC 7218
RFC Required
TLSA Matching Types
RFC 6698
RFC 7218
Specification Required (Expert: Unassigned)
TLSA Selectors
RFC 6698
RFC 7218
Specification Required (Expert: Viktor Dukhovni, Shumon Huque, Paul Wouters)
Domain Name System (DNS) Parameters
AFSDB RR Subtype
RFC 6895
RFC 1035
Registry closed per
RFC 6895
AMTRELAY Relay Type Field
RFC 8777
Specification Required (Expert: Unassigned)
Child Synchronization (CSYNC) Flags
RFC 7477
Standards Action
DHCID RR Digest Type Codes
RFC 4701
Standards Action
DHCID RR Identifier Type Codes
RFC 4701
Standards Action (Expert: Ólafur Guðmundsson)
DNS Catalog Zones Properties
RFC 9432
property prefix ends in the label "ext": Private Use.
all other property prefixes: Expert Review.
(Expert: Peter Thomassen, Ondřej Surý, Willem Toorop)
DNS CLASSes
RFC 6895
RFC 9108
0: Standards Action.
1-127: IETF Review.
128-253: IETF Review.
256-32767: IETF Review.
32768-57343: Specification Required.
57344-65279: Specification Required.
65280-65534: Private Use.
65535: Standards Action.
(Expert: Petr Špaček, Ladislav Lhotka)
DNS EDNS0 Option Codes (OPT)
RFC 6891
1-65000: Expert Review.
65001-65534: Local/Experimental Use.
(Expert: Ólafur Guðmundsson (primary), Frederico AC Neves (secondary), Ray Bellis (secondary), Roy Arends (secondary))
DNS Header Flags
RFC 6895
RFC 1035
Standards Action
DNS KEY RR Protocol Octet Values
RFC 4034
RFC 2535
CLOSED per
RFC 3445
DNS Label Types
RFC 6891
Standards Action
DNS OpCodes
RFC 6895
RFC 1035
Standards Action
DNS RCODEs
RFC 6895
RFC 1035
0-3840: IETF Review.
3841-4095: Private Use.
4096-65534: IETF Review.
65535: Reserved (Standards Action).
DNS Resolver Information Keys
RFC 9606
Specification Required (Expert: Tirumal Reddy, Mohamed Boucadair, Ben Schwartz)
DNS Server Cookie Methods
RFC 9018
RFC 7873
Version 1-239, Size 8-32: Expert Review.
Version 240-254, Size 8-32: Private Use.
(Expert: Ondřej Surý, Donald Eastlake)
DNS SVCB Service Parameter Keys (SvcParamKeys)
RFC 9460
0-65279: Expert Review.
65280-65534: Private Use.
(Expert: Benjamin Schwartz, David Lawrence)
DNS-over-QUIC Error Codes
RFC 9250
provisional (greater than 0x3f): Expert Review.
provisional registration Date field update: First Come First Served.
permanent, 0x00-0x3f: Standards Action or IESG Approval.
permanent, greater than 0x3f: Specification Required.
(Expert: Sara Dickinson, Christian Huitema)
DNSKEY RR Flags
RFC 3755
RFC 4034
Standards Action
DSO Type Codes
RFC 8490
0x0004-0x003F: Standards Action.
0x0040-0xF7FF: Expert Review.
0xF800-0xFBFF: Experimental/Local Use.
0xFC00-0xFFFF: Standards Action.
(Expert: Ted Lemon, Sara Dickinson, John Dickinson)
DSYNC: Location of Synchronization Endpoints
RFC 9859
Expert Review (Expert: Johan Stenstam, Peter Thomassen, John Levine)
EDNS Header Flags (16 bits)
RFC 6891
Standards Action
EDNS version Number (8 bits)
RFC 6891
Standards Action
Extended DNS Error Codes
RFC 8914
0-49151: First Come First Served.
49152-65535: Private Use.
Resource Record (RR) TYPEs
RFC 6895
RFC 1035
RFC 9108
0: RRTYPE zero is used as a special indicator for the SIG RR
RFC 2931
RFC 4034
and in other circumstances and must never
be allocated for ordinary use..
1-127: Expert Review (see mailing list information in
RFC 6895
) or Standards Action.
128-255: Expert Review (see mailing list information in
RFC 6895
) or Standards Action.
256-61439: Expert Review (see mailing list information in
RFC 6895
) or Standards Action.
61440-65279: Reserved for future use (IETF Review required to define use).
65280-65534: Private Use.
65535: Reserved (Standards Action).
(Expert: Roy Arends, Frederico AC Neves, Ólafur Guðmundsson, Ray Bellis)
SSHFP RR types for fingerprint types
RFC 4255
IETF Review
SSHFP RR Types for public key algorithms
RFC 4255
IETF Review
Underscored and Globally Scoped DNS Node Names
RFC 8552
Expert Review (Expert: Frederico A C Neves, Paul Wouters)
ZONEMD Hash Algorithms
RFC 8976
1-239: Specification Required.
240-254: Private Use.
(Expert: Warren Kumari, Duane Wessels, Wes Hardaker)
ZONEMD Schemes
RFC 8976
1-239: Specification Required.
240-254: Private Use.
(Expert: Warren Kumari, Duane Wessels, Wes Hardaker)
ZONEVERSION TYPE Values
RFC 9660
0-245: Specification Required.
246-254: Private Use.
255: Reserved.
(Expert: Hugo Salgado, Mauricio Vergara Ereche, Duane Wessels)
Domain Name System Security (DNSSEC) Algorithm Numbers
Digest Algorithms
RFC 3658
RFC 4034
RFC 4035
RFC 9157
RFC 9904
Standards Action or Specification Required (Expert: Mark Andrews, Roy Arends, Warren Kumari, Wes Hardaker)
DNS KEY Record Diffie-Hellman Prime Lengths
RFC 2539
IETF Review
DNS KEY Record Diffie-Hellman Well-Known Prime/Generator Pairs
RFC 2539
0x0000-0x07ff: Standards Action.
0x0800-0xbfff: RFC Required.
DNS Security Algorithm Numbers
RFC 4034
RFC 3755
RFC 6014
RFC 6944
RFC 9904
Standards Action or Specification Required (Expert: Mark Andrews, Roy Arends, Warren Kumari, Wes Hardaker)
Domain Name System Security (DNSSEC) NextSECure3 (NSEC3) Parameters
DNSSEC NSEC3 Flags
RFC 5155
RFC 9157
RFC Required
DNSSEC NSEC3 Hash Algorithms
RFC 5155
RFC 9157
RFC Required
DNSSEC NSEC3PARAM Flags
RFC 5155
RFC 9157
RFC Required
Domain-based Message Authentication, Reporting, and Conformance (DMARC)
DMARC Report Formats
draft-ietf-dmarc-dmarcbis-41
Specification Required (Expert: Scott Kitterman)
DMARC Tags
draft-ietf-dmarc-dmarcbis-41
Specification Required (Expert: Scott Kitterman)
DomainKeys Identified Mail (DKIM) Parameters
_domainkey DNS TXT Record Tag Specifications
RFC 6376
IETF Review
Authorized Third-Party Signature (ATPS) Tag Registry
RFC 6541
Specification Required (Expert: Unassigned)
DKIM Hash Algorithms
RFC 6376
IETF Review
DKIM Key Type
RFC 6376
IETF Review
DKIM Reporting Tag Registry
RFC 6651
Specification Required (Expert: Unassigned)
DKIM Selector Flags
RFC 6376
IETF Review
DKIM Service Types
RFC 6376
IETF Review
DKIM Signature Tag Specifications
RFC 6376
IETF Review
DKIM-Signature Canonicalization Body
RFC 6376
IETF Review
DKIM-Signature Canonicalization Header
RFC 6376
IETF Review
DKIM-Signature Query Method
RFC 6376
IETF Review
Drone Remote ID Protocol
DRIP Frame Types
RFC 9575
0x01-0x9F: Expert Review.
0xA0-0xEF: First Come First Served.
0xF0-0xFF: Experimental Use.
(Expert: Adam Wiethuechter, Mohamed Boucadair)
DRIP RAA Allocations
RFC 9886
0-3: Reserved.
4-3999: IESG Approval.
4000-8191: Reserved.
8192-15359: First Come First Served.
15360-16383: Private Use.
DRIP SAM Types
RFC 9575
Standards Action
HHIT Entity Types
RFC 9886
First Come First Served
Hierarchical a HIT (HHIT) Suite IDs
RFC 9374
IETF Review
Hierarchical HIT (HHIT) Prefixes
RFC 9374
Expert Review (Expert: Adam Wiethuechter, Mohamed Boucadair)
Dynamic Host Configuration Protocol (DHCP) and Bootstrap Protocol (BOOTP) Parameters
Altitude Type Registry
RFC 6225
Standards Action
Authentication Suboption (value 8) - Algorithm identifier values
RFC 4030
IETF Review
Authentication Suboption (value 8) - Protocol identifier values
RFC 3118
IETF Review
Authentication Suboption (value 8) - Replay Detection Method (RDM) identifier values
RFC 4030
IETF Review
BOOTP Vendor Extensions and DHCP Options
RFC 2939
IETF Review
CableLabs Client Configuration Option Ticket Control Mask Bit Definitions
RFC 3594
IETF Review
Datum Registry
RFC 6225
Standards Action
DHCP Cablelabs Client Configuration Option Type 122 Sub-Option Codes
RFC 3495
IETF Review
DHCP Message Type 53 Values
RFC 2939
IETF Review
DHCP Options Permitted in the RADIUS DHCPv4-Options Attribute
RFC 9445
Expert Review (Expert: Alan DeKok, Mohamed Boucadair)
DHCP Relay Agent Sub-Option Codes
RFC 3046
IETF Review
DHCP State Type 156 Values
RFC 6926
IETF Review
DHCP Status Code Type 151 Values
RFC 6926
IETF Review
GeoLoc Option Version Registry
RFC 6225
Standards Action
IEEE 802.21 Service Type (MoS DHCPv4 Address and FQDN Sub-Options)
RFC 5678
Standards Action
NetWare/IP Option Type 63 Sub-Option Codes
RFC 2242
Not defined
NTP Time Source Suboptions
RFC 5908
IETF Review
RADIUS Attributes Permitted in RADIUS Attributes DHCP Suboption
RFC 9445
Expert Review (Expert: Alan DeKok, Mohamed Boucadair)
VSS Type Options
RFC 6607
IETF Review
Dynamic Host Configuration Protocol for IPv6 (DHCPv6)
DHCPv6 Options Permitted in the RADIUS DHCPv6-Options Attribute
RFC 9445
RFC 9915
Expert Review (Expert: Alan DeKok, Mohamed Boucadair)
DUIDs
RFC 9915
Standards Action
IEEE 802.21 Service Type (MoS DHCPv6 Address and FQDN Sub-Options)
RFC 5678
RFC 9915
Standards Action
Message Types
RFC 9915
Standards Action
NTP Time Source Suboptions
RFC 5908
RFC 9915
IETF Review
Option Codes
RFC 9915
Expert Review and Standards Action (Expert: Ted Lemon, Bernie Volz, Tomek Mrugalski)
Option Codes Permitted in the S46 Priority Option
RFC 8026
RFC 9915
IETF Review
OPTION_LQ_QUERY option
RFC 5007
RFC 9915
Standards Action
Options Permitted in the Relay-Supplied Options Option
RFC 6422
RFC 9915
IETF Review
Processor Architecture Types
RFC 5970
RFC 9915
Expert Review (Expert: Vincent Zimmer, Bernie Volz, Tomek Mrugalski)
RADIUS Attributes Permitted in DHCPv6 RADIUS Option
RFC 7037
RFC 9915
Expert Review (Expert: Bernie Volz, Tomek Mrugalski)
Status Codes
RFC 9915
Standards Action
Supported Transport
RFC 9527
RFC 9915
RFC Required
VSS Type Options
RFC 6607
IETF Review
Dynamic Link Exchange Protocol (DLEP) Parameters
Data Item Type Values
RFC 8175
26-65407: Specification Required.
65408-65534: Private Use.
(Expert: Rick Taylor)
Extension Type Values
RFC 8175
2-65519: Specification Required.
65520-65534: Private Use.
(Expert: Rick Taylor)
Hop Control Actions Values
RFC 8629
4-65519: Specification Required.
65520-65534: Private Use.
(Expert: Rick Taylor)
IPv4 Address Flags
RFC 8175
Specification Required (Expert: Rick Taylor)
IPv4 Attached Subnet Flags
RFC 8175
Specification Required (Expert: Rick Taylor)
IPv4 Connection Point Flags
RFC 8175
Specification Required (Expert: Rick Taylor)
IPv6 Address Flags
RFC 8175
Specification Required (Expert: Rick Taylor)
IPv6 Attached Subnet Flags
RFC 8175
Specification Required (Expert: Rick Taylor)
IPv6 Connection Point Flags
RFC 8175
Specification Required (Expert: Rick Taylor)
Message Type Values
RFC 8175
17-65519: Specification Required.
65520-65534: Private Use.
(Expert: Rick Taylor)
Peer Type Flags
RFC 8175
Specification Required (Expert: Rick Taylor)
Queue Parameter Sub-Data Item Type Values
RFC 8651
2-65407: Specification Required.
65408-65534: Private Use.
(Expert: Unassigned)
Signal Type Values
RFC 8175
3-65519: Specification Required.
65520-65534: Private Use.
(Expert: Rick Taylor)
Status Code Values
RFC 8175
4-111: Specification Required.
112-127: Private Use.
133-239: Specification Required.
240-254: Private Use.
(Expert: Rick Taylor)
Traffic Classification Sub-Data Item Type Values
RFC 9892
1-65407: Specification Required.
65408-65534: Private Use.
(Expert: Unassigned)
Dynamic Source Routing (DSR) Protocol Parameters
Dynamic Source Routing (DSR) Protocol Options
RFC 4728
Expert Review (Expert: David B. Johnson, David A. Maltz, Yih-Chun Hu)
Dynamic Source Routing (DSR) Protocol Route Error Types
RFC 4728
Expert Review (Expert: David B. Johnson, David A. Maltz, Yih-Chun Hu)
Dynamic Symmetric Key Provisioning Protocol (DSKPP)
DSKPP Version Registry
RFC 6063
Standards Action
Key Container Registry
RFC 6063
Specification Required (Expert: Unassigned)
PRF Algorithm ID Registry
RFC 6063
Specification Required (Expert: Unassigned)
Status Codes
RFC 6063
Specification Required (Expert: Unassigned)
EAP-pwd Parameters
Password Preprocessing Methods
RFC 5931
Specification Required (Expert: Joseph Salowey)
PRF Registry
RFC 5931
IETF Review
PWD-Exch Messages
RFC 5931
IETF Review
Random Function Registry
RFC 5931
Specification Required (Expert: Joseph Salowey)
Electronic Commerce Modeling Language (ECML) Parameters
URN Prefix: urn:ietf:params:ecml
RFC 4112
IESG Approval
Electronic Commerce Modeling Language Version 2 (ECMLv2) Parameters
Ecom_Payment_Card_Protocol Registry
RFC 4112
Expert Approval (Expert: Donald Eastlake)
Ecom_Payment_Card_Type Registry
RFC 4112
Expert Approval (Expert: Donald Eastlake)
Ecom_Transaction_Type Registry
RFC 4112
Expert Approval (Expert: Donald Eastlake)
Email Authentication Parameters
Email Authentication Methods
RFC 8601
draft-ietf-dmarc-dmarcbis-41
Specification Required (Expert: Murray Kucherawy (primary), Scott Kitterman (secondary))
Email Authentication Property Types
RFC 8601
Expert Review (Expert: Murray Kucherawy (primary), Scott Kitterman (secondary))
Email Authentication Result Names
RFC 8601
draft-ietf-dmarc-dmarcbis-41
Specification Required (Expert: Murray Kucherawy (primary), Scott Kitterman (secondary))
Emergency Call Additional Data
Device Classification
RFC 7852
Expert Review (Expert: Brian Rosen)
Device ID Type
RFC 7852
Expert Review (Expert: Brian Rosen)
Device/Service Data Type
RFC 7852
Specification Required (Expert: Brian Rosen)
Emergency Call Data Types
RFC 7852
Specification Required (Expert: Brian Rosen (primary), Henning Schulzrinne (secondary))
Provider ID Series
RFC 7852
Expert Review (Expert: Brian Rosen)
Service Environment
RFC 7852
Expert Review (Expert: Brian Rosen)
Service Mobility
RFC 7852
Expert Review (Expert: Brian Rosen)
Service Type
RFC 7852
Expert Review (Expert: Brian Rosen)
Type of Provider
RFC 7852
Expert Review (Expert: Brian Rosen)
Emergency Call Metadata/Control Data
Emergency Call Action Failure Reasons
RFC 8147
Expert Review (Expert: Randall Gellens)
Emergency Call Actions
RFC 8147
Expert Review (Expert: Randall Gellens)
Emergency Call Static Messages
RFC 8148
Specification Required (Expert: Randall Gellens)
Emergency Call Vehicle Camera IDs
RFC 8148
Expert Review (Expert: Randall Gellens)
Emergency Call Vehicle Lamp IDs
RFC 8148
Expert Review (Expert: Randall Gellens)
Enumservice Registrations
Enumservice Registrations
RFC 6117
Specification Required (Expert: Bernie Hoeneisen)
Ephemeral Diffie-Hellman Over COSE (EDHOC)
EDHOC Authentication Credential Types
RFC 9668
less than -65536: Private Use.
-65536 to -25: Specification Required.
-24 to 23: Standards Action with Expert Review.
24 to 65535: Specification Required.
greater than 65535: Private Use.
(Expert: Francesca Palombini, Marco Tiloca, Göran Selander)
EDHOC Cipher Suites
RFC 9528
-65536 to -25: Specification Required.
-24 to -21: Private Use.
-20 to 23: Standards Action with Expert Review.
24 to 65535: Specification Required.
(Expert: John Mattson, Göran Selander, Mališa Vučinić)
EDHOC Error Codes
RFC 9528
-65536 to -25: Expert Review.
-24 to 23: Standards Action.
24 to 65535: Expert Review.
(Expert: John Mattson, Göran Selander, Mališa Vučinić)
EDHOC Exporter Labels
RFC 9528
0-23: Standards Action.
24-32767: Expert Review.
32768-65535: Private Use.
(Expert: John Mattson, Göran Selander, Mališa Vučinić)
EDHOC External Authorization Data
RFC 9528
0-23: Standards Action with Expert Review.
24-65535: Specification Required.
(Expert: John Mattson, Göran Selander, Mališa Vučinić)
EDHOC Method Types
RFC 9528
-65536 to -25: Specification Required.
-24 to 23: Standards Action with Expert Review.
24 to 65535: Specification Required.
(Expert: John Mattson, Göran Selander, Mališa Vučinić)
ESP AGGFRAG_PAYLOAD
AGGFRAG_PAYLOAD Sub-Types
RFC 9347
Expert Review (Expert: Christian Hopps)
Ethernet VPN (EVPN)
EVPN Route Types
RFC 7432
RFC Required
Extended Master Session Key (EMSK) Parameters
EMSK PRF Numbers
RFC 5295
0-220: IETF Review.
221-255: Reserved for Private Use.
User Specific Root Keys (USRK) Key Labels
RFC 5295
Specification Required (Expert: Unassigned)
Extensible Authentication Protocol (EAP)
ADE Type Namespace
RFC 4746
Expert Review (Expert: Joseph Salowey)
Attribute Types (Non-Skippable Attributes 0-127)
RFC 4187
Specification Required (Expert: Vesa Lehtovirta)
Attribute Types (Skippable Attributes 128-255)
RFC 4187
Specification Required (Expert: Vesa Lehtovirta)
DH Group ID Namespace
RFC 4746
Expert Review (Expert: Unassigned)
EAP Finish/Re-auth Flags
RFC 6630
Standards Action or IESG Approval
EAP Initiate and Finish Attributes
RFC 6696
IETF Review
EAP Initiate/Re-auth Flags
RFC 6630
Standards Action or IESG Approval
EAP Initiate/Re-auth-Start Flags
RFC 6630
Standards Action or IESG Approval
EAP Lower Layers
RFC 6677
Expert Review (Expert: Joseph Salowey)
EAP Provisioning Identifiers
draft-ietf-emu-eap-arpa-10
Expert Review (Expert: Unassigned)
EAP-AKA' AT_KDF Key Derivation Function Values
RFC 9048
Specification Required (Expert: Vesa Lehtovirta)
EAP-AKA' AT_KDF_FS Key Derivation Function Values
RFC 9678
Specification Required (Expert: Jari Arkko, Peter Yee)
EAP-FAST (value 43) Error-TLV (value 5) Error-Codes
RFC 4851
Specification Required (Expert: Joseph Salowey)
EAP-FAST (value 43) Request-Action TLV (value 19) Action Codes
RFC 4851
Specification Required (Expert: Joseph Salowey)
EAP-FAST GTC Error Codes
RFC 5421
Specification Required (Expert: Joseph Salowey)
EAP-FAST PAC Attribute Types
RFC 5422
Specification Required (Expert: Joseph Salowey)
EAP-FAST PAC Types
RFC 5422
Specification Required (Expert: Joseph Salowey)
EAP-FAST Server-Trusted-Root Credential Format Types
RFC 5422
Specification Required (Expert: Joseph Salowey)
EAP-FAST TLV Types (Value 43)
RFC 4851
Specification Required (Expert: Joseph Salowey)
EAP-GPSK Ciphersuites
RFC 5433
IETF Review
EAP-GPSK Failure Codes
RFC 5433
IETF Review
EAP-GPSK OP Codes
RFC 5433
IETF Review
EAP-GPSK Protected Data Payloads
RFC 5433
IETF Review
EAP-IKEv2 Payloads
RFC 5106
Expert Review (Expert: Joseph Salowey)
EAP-NOOB Cryptosuites
RFC 9140
Specification Required (Expert: Tuomas Aura, Mohit Sethi)
EAP-NOOB Error Codes
RFC 9140
6001-6999: Private and Experimental Use.
All other values: Specification Required.
(Expert: Tuomas Aura, Mohit Sethi)
EAP-NOOB Message Types
RFC 9140
Specification Required (Expert: Tuomas Aura, Mohit Sethi)
EAP-NOOB PeerInfo Data Fields
RFC 9140
Specification Required (Expert: Tuomas Aura, Mohit Sethi)
EAP-NOOB ServerInfo Data Fields
RFC 9140
Specification Required (Expert: Tuomas Aura, Mohit Sethi)
EAP-SAKE messages
RFC 4763
IETF Review with Specification Required (Expert: Unassigned)
EAP-TTLS AVP Usage
RFC 5281
IETF Review
Encryption Algorithms
RFC 4793
0x0003-0x7fff: Specification Required and IESG Approval.
0x8000-0xffff: Vendor-specific proprietary algorithms.
(Expert: Joseph Salowey)
EXT_Type Numbers
RFC 4764
Specification Required (Expert: Joseph Salowey)
Hash Algorithms
RFC 4793
0x0006-0x7fff: Specification Required and IESG Approval.
0x8000-0xffff: Proprietary vendor-specific algorithms.
(Expert: Joseph Salowey)
MAC Algorithms
RFC 4793
0x0002-0x7fff: Specification Required and IESG Approval.
0x8000-0xffff: Vendor-specific proprietary algorithms.
(Expert: Joseph Salowey)
MAC ID Namespace
RFC 4746
Expert Review (Expert: Joseph Salowey)
Message Types
RFC 6696
IETF Review
Method Types
RFC 3748
1-191: Specification Required.
192-253: Standards Action.
254: Expanded Type.
255: Experimental.
256-4294967295: Specification Required.
(Expert: Joseph Salowey)
non-skippable attributes
RFC 4763
IETF Review with Specification Required (Expert: Unassigned)
Packet Codes
RFC 3748
Standards Action
Public Key ID Namespace
RFC 4746
Expert Review (Expert: Joseph Salowey)
Re-authentication Cryptosuites
RFC 6696
IETF Review
skippable attributes
RFC 4763
IETF Review
Subtypes
RFC 4187
Specification Required (Expert: Vesa Lehtovirta)
TEAP Error TLV (value 5) Error Codes
RFC 9930
Specification Required (Expert: Margaret Cullen, Nancy Cam-Winget)
TEAP Identity-Type TLV (value 2) Registry
RFC 9930
Specification Required (Expert: Unassigned)
TEAP PAC TLV (value 11) PAC Attribute Type Codes
RFC 9930
Registry closed
TEAP PAC TLV (value 11) PAC-Type Type Codes
RFC 9930
Registry closed
TEAP Request-Action TLV (value 8) Registry
RFC 9930
Specification Required (Expert: Unassigned)
TEAP Status Codes
RFC 9930
Specification Required (Expert: Unassigned)
TEAP TLV Types
RFC 9930
Specification Required (Expert: Margaret Cullen, Nancy Cam-Winget)
TEAP Trusted-Server-Root TLV (value 17) Credential-Format Codes
RFC 9930
Specification Required (Expert: Unassigned)
Trusted Non-3GPP Access EAP Parameters
RFC 7458
Specification Required (Expert: Jouni Korhonen)
Extensible Authentication Protocol (EAP) Channel-Binding Parameters
EAP Channel-Binding Codes
RFC 6677
Standards Action
EAP Channel-Binding Namespaces
RFC 6677
IETF Review
Extensible Authentication Protocol (EAP) Encrypted Key Exchange (EKE) Registry
EAP-EKE Channel-Binding Type Registry
RFC 6124
Specification Required (Expert: Joseph Salowey)
EAP-EKE Diffie-Hellman Group Registry
RFC 6124
Specification Required (Expert: Joseph Salowey)
EAP-EKE Encryption Algorithm Registry
RFC 6124
Specification Required (Expert: Joseph Salowey)
EAP-EKE Exchange Registry
RFC 6124
RFC Required
EAP-EKE Failure-Code Registry
RFC 6124
RFC Required
EAP-EKE Identity Type Registry
RFC 6124
Specification Required (Expert: Joseph Salowey)
EAP-EKE Keyed Message Digest (MAC) Registry
RFC 6124
Specification Required (Expert: Joseph Salowey)
EAP-EKE Pseudo Random Function Registry
RFC 6124
Specification Required (Expert: Joseph Salowey)
Extensible Binary Meta Language (EBML)
EBML DocTypes
RFC 8794
First Come First Served
EBML Element IDs
RFC 8794
0x80-0xFE: RFC Required.
0x407F-0x7FFE: Specification Required.
0x203FFF-0x3FFFFE: First Come First Served.
0x101FFFFF-0x1FFFFFFE: Specification Required or First Come First Served.
(Expert: Dave Rice (primary), Steve Lhomme (backup), Moritz Bunkus (backup))
Extensible Markup Language (XML) Configuration Access Protocol (XCAP) Parameters
XCAP Application Unique IDs
RFC 4825
Standards Action
Extensible Provisioning Protocol (EPP) Extensions
Extensions for the Extensible Provisioning Protocol (EPP)
RFC 7451
Specification Required (Expert: Gavin Brown (primary), Alexander Mayrhofer (secondary), Ning Kong (secondary),
Roger D Carney (secondary), Jim Galvin (secondary), James Gould (secondary), Scott Hollenbeck (secondary))
Extensible Provisioning Protocol (EPP) Organization Role Values
EPP Organization Role Values
RFC 8543
Expert Review (Expert: James Gould)
Extensible Provisioning Protocol (EPP) Repository Identifiers
EPP Repository Identifiers
RFC 5730
First Come First Served
FCAST Parameters
FCAST Object Metadata Encoding
RFC 6968
Expert Review (Expert: Unassigned)
FCAST Object Metadata Format
RFC 6968
Specification Required (Expert: Unassigned)
FCAST Object Metadata Types
RFC 6968
Expert Review (Expert: Unassigned)
Federated File System (FedFS) Parameters
FedFS Annotation Keys
RFC 7532
First Come First Served
FedFS Object Identifiers
RFC 7532
Registry Closed
Fibre Channel Port Types Registry
Fibre Channel Port Types
RFC 4044
1-9999: Specification Required.
10000-99999: Private Use.
100000 and higher: Reserved.
(Expert: Claudio DeSanti)
Flow Spec Component Types
Flow Spec Component Types
RFC 8955
RFC 8956
0: Reserved.
1-127: Specification Required.
128-254: Expert Review.
255: Reserved.
(Expert: Susan Hares, Robert Raszuk)
FLUTE - File Delivery over Unidirectional Transport (FLUTE) Parameters
FLUTE Content Encoding Algorithms
RFC 6726
Specification Required (Expert: Unassigned)
FOOBAR Address Family Numbers
Assigned FOOBAR Address Families
RFC 1639
IANA assignment
Forwarding and Control Element Separation (ForCES)
Association Setup Response
RFC 5810
0x00000000-0x000000FF: IETF Review.
0x00000100-0x0000FFFF: Specification Required.
(Expert: Jamal Hadi Salim, Joel Halpern)
Association Teardown Message
RFC 5810
0x00000000-0x0000FFFF: IETF Review.
0x00010000-0x7FFFFFFF: Specification Required.
(Expert: Jamal Hadi Salim, Joel Halpern)
Exception ID
RFC 6956
Specification Required (Expert: Jamal Hadi Salim, Joel Halpern)
EXTENDEDRESULT-TLV Result Values
RFC 7391
Specification Required (Expert: Unassigned)
Header Flags
RFC 5810
IETF Review
Logical Functional Block (LFB) Class Names and Class Identifiers
RFC 5812
RFC 7121
0-65535: Standards Action.
>65535: First Come First Served with any publicly available specification.
Message Types
RFC 5810
0x00-0x1F: IETF Review.
0x20-0x7F: Specification Required.
(Expert: Jamal Hadi Salim, Joel Halpern)
Metadata ID
RFC 6956
Specification Required (Expert: Jamal Hadi Salim, Joel Halpern)
Operation Selection (OPER-TLV) Types
RFC 5810
0x0000-0x00FF: IETF Review.
0x0100-0x7FFF: Specification Required.
(Expert: Jamal Hadi Salim, Joel Halpern)
RESULT-TLV Result Values
RFC 5810
Expert Review (Expert: Jamal Hadi Salim, Joel Halpern)
TLV Types
RFC 5810
0x0000-0x01FF: IETF Review.
0x0200-0x7FFF: Specification Required.
(Expert: Jamal Hadi Salim, Joel Halpern)
Validate Error ID
RFC 6956
Specification Required (Expert: Jamal Hadi Salim, Joel Halpern)
Free Lossless Audio Codec (FLAC)
FLAC Application Metadata Block IDs
RFC 9639
First Come First Served
FTP parameters
FTP Commands and Extensions
RFC 5797
registration marked "mandatory" ('m' in the "conf" column): Standards Action.
all other registrations: Specification Required.
(Expert: John Klensin)
General Internet Signalling Transport (GIST) Parameters
Additional Information Types
RFC 5971
First Come First Served
Error Code 1 Subcodes
RFC 5971
First Come First Served
Error Code 10 Subcodes
RFC 5971
First Come First Served
Error Code 12 Subcodes
RFC 5971
First Come First Served
Error Code 9 Subcodes
RFC 5971
First Come First Served
GIST Error Codes
RFC 5971
First Come First Served
GIST MA-Protocol-IDs
RFC 5971
0-63: IETF Review.
64-119: Expert Review.
(Expert: Martin Stiemerling)
GIST Message Routing Methods
RFC 5971
0-63: IETF Review.
64-119: Specification Required.
(Expert: Martin Stiemerling)
GIST Message Types
RFC 5971
0-31: IETF Review.
32-55: Expert Review.
(Expert: Martin Stiemerling)
GIST Object Types
RFC 5971
0-1023: IETF Review.
1024-1999: Specification Required.
(Expert: Martin Stiemerling)
NSIS Signaling Layer Protocol (NSLP) Identifiers
RFC 5971
IESG Approval
Generalized Multi-Protocol Label Switching (GMPLS) Signaling Parameters
Actions
RFC 3471
IETF Review or Specification Required (Expert: Unassigned)
Administrative Status Information Flags
RFC 4783
Standards Action
Association Type
RFC 4872
Standards Action
CWDM Channel Spacing Subregistry
RFC 6205
Standards Action
DWDM Channel Spacing Subregistry
RFC 6205
Standards Action
Ethernet Bandwidth Profiles
RFC 6003
Standards Action
Ethernet Sender TSpec TLVs/Ethernet Flowspec TLVs
RFC 6003
Standards Action
Ethernet Switching Granularities
RFC 6003
Standards Action
Generalized PIDs (G-PID)
RFC 3471
RFC 4328
0-31743: Standards Action.
31744-32767: Assigned Temporarily for Experimental Usage.
32768-65535: Standards Action.
Generalized SCSI (Switching Capability Specific Information) TLV Types
RFC 8258
Specification Required (Expert: Lou Berger, Vishnu Beeram)
Grid Subregistry
RFC 6205
Standards Action
Hierarchy Actions
RFC 6107
Standards Action
Interface_ID Types
RFC 3471
IETF Review or Specification Required (Expert: Unassigned)
LSP Encoding Types
RFC 3471
RFC 4328
0-239: Standards Action.
240-255: Assigned temporarily for Experimental Usage.
OTN Signal Type
RFC 7139
RFC 7892
0-255: Standards Action.
0-255: Specification Required.
(Expert: Daniele Ceccarelli, Fatai Zhang)
Special Purpose Generalized Label Values
RFC 8359
Standards Action
Switching Types
RFC 3471
RFC 4328
RFC 7074
Standards Action
GeneRic Autonomic Signaling Protocol (GRASP) Parameters
GRASP Messages and Options
RFC 8990
Standards Action
GRASP Objective Names
RFC 8990
Specification Required (Expert: Michael Richardson)
Generic Routing Encapsulation (GRE) Parameters
GRE Protocol Types
RFC 2784
Need to go to IEEE
GRE Version Numbers
RFC 2784
IETF Review
Generic Security Service Application Program Interface (GSSAPI)/Kerberos/Simple Authentication and Security Layer (SASL) Service Names
GSSAPI/Kerberos/SASL Service Names
RFC 2743
Specification Required (Expert: Unassigned)
Generic Security Service Application Program Interface Parameters
GSS-API URN Parameters
RFC 7056
IETF Review or Expert Review (Expert: Unassigned)
Geolocation Policy
Geolocation Policy Location Profile Names
RFC 6772
Specification Required (Expert: Unassigned)
Geopriv HTTP Enabled Location Delivery (HELD) Parameters
HELD Error Codes
RFC 5985
Standards Action
Geopriv Identifiers
Geopriv Identifiers
RFC 7035
IETF Review
Geopriv Location Object Registries
Method Tokens
RFC 4119
First Come First Served
PIDF-LO Civic Address Considerations Registry
RFC 5774
Expert Review (Expert: Brian Rosen, Dan Banks)
XML Namespaces for 'provided-by' elements for use with PIDF-LO objects
RFC 4119
Expert Review (Expert: Primary: Allison Mankin, Secondary: Jon Peterson)
Geopriv Location Type Registries
Civic Address Types (CAtypes)
RFC 4776
RFC 6848
Type=A: IETF Review.
Type=B: Expert Review.
(Expert: Martin Thomson)
Location Types
RFC 4589
Expert Review (Expert: Martin Thomson)
Relative Location Parameters
RFC 7035
IETF Review
Global Navigation Satellite System (GNSS)
Global Navigation Satellite System (GNSS) Types
RFC 7105
Specification Required (Expert: Unassigned)
Global Switch Management Protocol version 3 (GSMPv3) Adaptation Type Name Space
Adaptation Types
RFC 3292
0x000-0x2FF: IETF Review.
0x300-0xFFF: First Come First Served.
Global Switch Management Protocol version 3 (GSMPv3) Event Flag Name Space
Event Flags
RFC 3292
Expert Review (Expert: Stefaan De Cnodder, Avri Doria)
Global Switch Management Protocol version 3 (GSMPv3) Failure Response Message Name Space
Failure Response Message Names
RFC 3292
0-59: IETF Review.
60-79: Reserved for Vendor Private Extensions.
80-127: IETF Review.
128-159: Reserved for Vendor Private Extensions.
160-255: IETF Review.
Global Switch Management Protocol version 3 (GSMPv3) Label Type Name Space
Label Type Names
RFC 3292
0x000-0xAFF: IETF Review.
0xB00-0xEFF: RFC Required.
0xF00-0xFFF: Reserved for vendor private use.
Global Switch Management Protocol version 3 (GSMPv3) Message Type Name Space
Message Types
RFC 3292
0-99: IETF Review.
100-199: RFC Required.
200-249: Intended for Abstract and Resource Model Extension Messages.
250-255: Reserved for vendor private use.
Global Switch Management Protocol version 3 (GSMPv3) Model Type Name Space
Model Type Names
RFC 3292
0: IETF Review.
1-200: RFC Required.
201-255: Reserved for vendor private use.
Global Switch Management Protocol version 3 (GSMPv3) Port Type Name Space
Port Type Names
RFC 3292
0-127: IETF Review.
128-255: RFC Required or Specification Required.
(Expert: Unassigned)
Global Switch Management Protocol version 3 (GSMPv3) Result Type Name Space
Result Type Names
RFC 3292
Expert Review (Expert: Stefaan De Cnodder, Avri Doria)
Global Switch Management Protocol version 3 (GSMPv3) Service ID Name Space
Service ID Names
RFC 3292
0-1023: IETF Review.
1024-65535: RFC Required.
Global Switch Management Protocol version 3 (GSMPv3) Traffic Control Name Space
Traffic Control Flags
RFC 3292
Expert Review (Expert: Stefaan De Cnodder, Avri Doria)
Global Switched Telephone Network (GSTN) Address Element Extensions in Email Services
Qual2-Label
RFC 2846
Specification Required (Expert: Unassigned)
Qualif-Type 1
RFC 2846
RFC 3191
Specification Required (Expert: Unassigned)
Service Selector
RFC 2846
RFC 3191
Specification Required (Expert: Unassigned)
GMPLS Routing Parameters for WSON
Types for Subfields of WSON Resource Block Information Registry
RFC 7581
Standards Action
Grant Negotiation and Authorization Protocol (GNAP)
GNAP Access Token Flags
RFC 9635
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Assertion Formats
RFC 9635
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Authorization Server Discovery Fields
RFC 9635
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Client Instance Display Fields
RFC 9635
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Client Instance Fields
RFC 9635
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Error Codes
RFC 9635
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Grant Request Parameters
RFC 9635
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Grant Response Parameters
RFC 9635
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Interaction Finish Methods
RFC 9635
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Interaction Hints
RFC 9635
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Interaction Mode Responses
RFC 9635
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Interaction Start Modes
RFC 9635
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Key Formats
RFC 9635
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Key Proofing Methods
RFC 9635
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Resource Set Registration Request Parameters
RFC 9767
Expert Review (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Resource Set Registration Response Parameters
RFC 9767
Expert Review (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP RS-Facing Discovery Document Fields
RFC 9767
Expert Review (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP RS-Facing Error Codes
RFC 9767
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Subject Information Request Fields
RFC 9635
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Subject Information Response Fields
RFC 9635
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Token Formats
RFC 9767
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Token Introspection Request
RFC 9767
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
GNAP Token Introspection Response
RFC 9767
Specification Required (Expert: Justin Richer, Joseph Salowey, Sudesha Shetty)
Group Domain of Interpretation (GDOI) Payloads
GAP Payload Policy Attributes
RFC 6407
Standards Action
GDOI DOI Exchange Types
RFC 8263
Specification Required (Expert: Brian Weis)
GDOI ID Payload Type Values
RFC 3547
Standards Action
GDOI SA TEK Attributes
RFC 8052
Expert Review (Expert: Brian Weis, Tero Kivinen)
ID Types
RFC 8052
Expert Review (Expert: Brian Weis, Tero Kivinen)
IEC 62351-9 Authentication Values
RFC 8052
Expert Review (Expert: Brian Weis, Tero Kivinen)
IEC 62351-9 Confidentiality Values
RFC 8052
Expert Review (Expert: Brian Weis, Tero Kivinen)
Key Download Type Values
RFC 3547
Standards Action
SA KEK Payload Values
SA TEK Payload Values
Group Secure Association Group Management Protocol (GSAKMP) Parameters
GSAKMP Acknowledgment Types
RFC 4535
Standards Action
GSAKMP Certificate Types
RFC 4535
Expert Review (Expert: Unassigned)
GSAKMP Cryptographic Key Types
RFC 4535
Expert Review (Expert: Unassigned)
GSAKMP Exchange Types
RFC 4535
Standards Action
GSAKMP Group Identification Types
RFC 4535
Standards Action
GSAKMP Identification Classification
RFC 4535
Standards Action
GSAKMP Identification Types
RFC 4535
Expert Review (Expert: Unassigned)
GSAKMP Key Creation Types
RFC 4535
Expert Review (Expert: Unassigned)
GSAKMP Key Download Data Item Types
RFC 4535
Standards Action
GSAKMP Mechanism Types
RFC 4535
Standards Action
GSAKMP Nonce Hash Types
RFC 4535
Expert Review (Expert: Unassigned)
GSAKMP Nonce Types
RFC 4535
Standards Action
GSAKMP Notification Types
RFC 4535
Standards Action
GSAKMP Payload Types
RFC 4535
Standards Action
GSAKMP Policy Token Types
RFC 4535
Standards Action
GSAKMP Rekey Event Types
RFC 4535
Standards Action
GSAKMP Signature Types
RFC 4535
Expert Review (Expert: Unassigned)
Hash Algorithms for HTTP Digest Fields
Hash Algorithms for HTTP Digest Fields
RFC 9530
Specification Required (Expert: Roberto Polli (primary), Lucas Pardue (secondary))
Hash Function Textual Names
Hash Function Textual Names
RFC 8122
Standards Action
Hash-Based Signatures
Leighton-Micali Signatures (LMS)
RFC 8554
0x00000005-0xDDDDDDDC: Specification Required.
0xDDDDDDDD-0xFFFFFFFF: Private Use.
(Expert: David McGrew, Scott Fluhrer)
LM-OTS Signatures
RFC 8554
0x00000001-0xDDDDDDDC: Specification Required.
0xDDDDDDDD-0xFFFFFFFF: Private Use.
(Expert: David McGrew, Scott Fluhrer)
WOTS+ Signatures
RFC 8391
Specification Required (Expert: Andreas Huelsing, Stefan-Lukas Gazdag)
XMSS Signatures
RFC 8391
Specification Required (Expert: Andreas Huelsing, Stefan-Lukas Gazdag)
XMSS^MT Signatures
RFC 8391
Specification Required (Expert: Andreas Huelsing, Stefan-Lukas Gazdag)
Host Identity Protocol (HIP) Parameters
DI-Types
RFC 7401
IETF Review
ESP Transform Suite IDs
RFC 7402
IETF Review
Group IDs
RFC 7401
IETF Review
HI Algorithm
RFC 7401
IETF Review
HIP Certificate Types
RFC 8002
IETF Review
HIP Cipher ID
RFC 7401
IETF Review
HIP NAT Traversal Modes
RFC 5770
IETF Review
HIP Transport Modes
RFC 6261
IETF Review or IESG Approval
HIP Version
RFC 7401
IETF Review
HIP Via Flags
RFC 6028
IETF Review or IESG Approval
HIT Suite ID
RFC 7401
IETF Review
Notify Message Types
RFC 7401
1-50: IETF Review.
51-8191: Specification Required.
8192-16383: Reserved for Private Use.
16384-40959: Specification Required.
40960-65535: Reserved for Private Use.
(Expert: Robert Moskowitz, Jeff Ahrenholz)
Packet Types
RFC 7401
IETF Review
Parameter Types
RFC 7401
0-1023: IETF Review.
1024-32767: Specification Required.
32768-49151: Reserved for Private Use.
49152-61439: Specification Required.
61440-65535: IETF Review.
(Expert: Robert Moskowitz, Jeff Ahrenholz)
Registration Failure Types
RFC 8003
0-200: IETF Review.
201-255: Reserved for Private Use.
Registration Types
RFC 8003
0-200: IETF Review.
201-255: Reserved for Private Use.
Suite IDs
RFC 5201
Registry closed per
RFC 7401
HTTP Message Signature
HTTP Signature Algorithms
RFC 9421
Specification Required (Expert: Justin Richer, Manu Sporny)
HTTP Signature Component Parameters
RFC 9421
Expert Review (Expert: Justin Richer, Manu Sporny)
HTTP Signature Derived Component Names
RFC 9421
Expert Review (Expert: Justin Richer, Manu Sporny)
HTTP Signature Metadata Parameters
RFC 9421
Expert Review (Expert: Justin Richer, Manu Sporny)
HTTP Origin-Bound Authentication (HOBA) Parameters
HOBA Device Identifier Types
RFC 7486
Specification Required (Expert: Unassigned)
HOBA Key Identifier Types
RFC 7486
Specification Required (Expert: Unassigned)
HOBA Signature Algorithms
RFC 7486
Specification Required (Expert: Unassigned)
Hybrid Public Key Encryption (HPKE)
HPKE AEAD Identifiers
RFC 9180
Specification Required (Expert: Christopher Wood, Richard Barnes)
HPKE KDF Identifiers
RFC 9180
Specification Required (Expert: Christopher Wood, Richard Barnes)
HPKE KEM Identifiers
RFC 9180
Specification Required (Expert: Christopher Wood, Richard Barnes)
Hypertext Transfer Protocol (HTTP) Alt-Svc Parameter Registry
HTTP Alt-Svc Parameter Registry
RFC 7838
Expert Review (Expert: Unassigned)
Hypertext Transfer Protocol (HTTP) Authentication Control Parameters
HTTP Authentication Control Parameters
RFC 8053
Specification Required (Expert: Rifaat Shekh-Yusef, Yutaka Oiwa)
HTTP Mutual Authentication Host Validation Methods
RFC 8120
Expert Review (Expert: Rifaat Shekh-Yusef, Yutaka Oiwa)
Hypertext Transfer Protocol (HTTP) Authentication Scheme Registry
HTTP Authentication Schemes
RFC 9110
IETF Review
HTTP Mutual Authentication Algorithms
RFC 8120
Expert Review (Expert: Rifaat Shekh-Yusef, Yutaka Oiwa)
Hypertext Transfer Protocol (HTTP) Cache Directive Registry
HTTP Cache Directive Registry
RFC 9111
IETF Review
Hypertext Transfer Protocol (HTTP) Cache-Status
HTTP Cache-Status
RFC 9211
Expert Review (Expert: Mark Nottingham)
Hypertext Transfer Protocol (HTTP) Cookie Attributes
Cookie Attributes
draft-ietf-httpbis-rfc6265bis-22
RFC Required
Hypertext Transfer Protocol (HTTP) Digest Algorithm Values
Hash Algorithms for HTTP Digest Authentication
RFC 7616
Specification Required (Expert: Unassigned)
HTTP Digest Algorithm Values
RFC 3230
RFC Required or Specification Required (Expert: James Manger)
Hypertext Transfer Protocol (HTTP) Field Name Registry
Hypertext Transfer Protocol (HTTP) Field Name Registry
RFC 9110
RFC 9651
Specification Required for Permanent registrations,
Expert Review for Provisional registrations. (Expert: Mark Nottingham, Roy Fielding)
Hypertext Transfer Protocol (HTTP) Method Registry
HTTP Method Registry
RFC 9110
IETF Review
Hypertext Transfer Protocol (HTTP) Parameters
HTTP Content Coding Registry
RFC 9110
IETF Review
HTTP Forwarded Parameters
RFC 7239
IETF Review
HTTP Preferences
RFC 7240
Specification Required (Expert: Julian Reschke)
HTTP Range Unit Registry
RFC 9110
IETF Review
HTTP Transfer Coding Registry
RFC 9112
IETF Review
Hypertext Transfer Protocol (HTTP) Priority
HTTP Priority
RFC 9218
Key length of one: Specification Required.
Key length greater than one: Expert Review.
(Expert: Lucas Pardue, Kazuho Oku)
Hypertext Transfer Protocol (HTTP) Problem Types
HTTP Problem Types
RFC 9457
Specification Required (Expert: Mark Nottingham, Sanjay Dalal)
Hypertext Transfer Protocol (HTTP) Proxy-Status
HTTP Proxy Error Types
RFC 9209
Expert Review (Expert: Mark Nottingham)
HTTP Proxy-Status Parameters
RFC 9209
Expert Review (Expert: Mark Nottingham)
Hypertext Transfer Protocol (HTTP) Status Code Registry
HTTP Status Codes
RFC 9110
IETF Review
Hypertext Transfer Protocol (HTTP) Upgrade Token Registry
HTTP Upgrade Tokens
RFC 9110
First Come First Served
Hypertext Transfer Protocol (HTTP) Warn Codes
HTTP Warn Codes
RFC 7234
IETF Review
Hypertext Transfer Protocol version 2 (HTTP/2) Parameters
HTTP/2 Error Code
RFC 9113
Expert Review (Expert: Martin Thomson (primary), Julian Reschke (secondary))
HTTP/2 Frame Type
RFC 9113
IETF Review or IESG Approval
HTTP/2 Settings
RFC 9113
Expert Review (Expert: Martin Thomson (primary), Julian Reschke (secondary))
Hypertext Transfer Protocol version 3 (HTTP/3)
HTTP/3 Error Codes
RFC 9114
provisional: Expert Review.
provisional registration date field update: First Come First Served.
permanent, 0x00-0x3f: Standards Action or IESG Approval.
permanent, greater than 0x3f: Specification Required.
values 0x1f * N + 0x21 (for non-negative integer values of N): Reserved.
first unassigned codepoint: Standards Action.
(Expert: Mike Bishop, Alan Frindell)
HTTP/3 Frame Types
RFC 9114
provisional: Expert Review.
provisional registration date field update: First Come First Served.
permanent, 0x00-0x3f: Standards Action or IESG Approval.
permanent, greater than 0x3f: Specification Required.
values 0x1f * N + 0x21 (for non-negative integer values of N): Reserved.
first unassigned codepoint: Standards Action.
(Expert: Mike Bishop, Alan Frindell)
HTTP/3 Settings
RFC 9114
provisional: Expert Review.
provisional registration date field update: First Come First Served.
permanent, 0x00-0x3f: Standards Action or IESG Approval.
permanent, greater than 0x3f: Specification Required.
values 0x1f * N + 0x21 (for non-negative integer values of N): Reserved.
first unassigned codepoint: Standards Action.
(Expert: Mike Bishop, Alan Frindell)
HTTP/3 Stream Types
RFC 9114
provisional: Expert Review.
provisional registration date field update: First Come First Served.
permanent, 0x00-0x3f: Standards Action or IESG Approval.
permanent, greater than 0x3f: Specification Required.
values 0x1f * N + 0x21 (for non-negative integer values of N): Reserved.
first unassigned codepoint: Standards Action.
(Expert: Mike Bishop, Alan Frindell)
IANA OUI Ethernet Numbers
IANA Link Layer Discovery Protocol (LLDP) TLV Subtypes
RFC 8520
RFC 9542
Expert Review (Expert: Eliot Lear, Dan Romascanu)
IANA MAC ADDRESS BLOCK
RFC 9542
See
RFC 9542
. (Expert: Donald Eastlake (primary), Juan Carlos Zuniga (secondary))
IANA PTP TLV Subtypes
draft-ietf-ntp-over-ptp-08
0-0xFFFF: IETF Review.
0x10000-0x7FFFFF: Specification Required.
0x800000-0xFFFFFE: Experimental and Private Use.
(Expert: Unassigned)
SNAP Protocol Numbers
RFC 9542
Expert Review (Expert: Donald Eastlake (primary), Juan Carlos Zuniga (secondary))
The CFxxxx Series
IANA-Maintained MIBs
IANA-ADDRESS-FAMILY-NUMBERS-MIB
RFC 2677
IANA-BFD-TC-STD-MIB
RFC 7330
IETF Review
IANA-CHARSET-MIB
RFC 3808
See Character Sets
IANA-ENERGY-RELATION-MIB
RFC 7461
Specification Required (Expert: Unassigned)
IANA-ENTITY-MIB
RFC 6933
Expert Review (Expert: Andy Bierman (primary), Jürgen Schönwälder (secondary))
IANA-FINISHER-MIB
RFC 3806
Expert Review (Expert: Ira McDonald, Michael Sweet)
IANA-GMPLS-TC-MIB
RFC 4802
See individual GMPLS registry procedures
IANA-IPPM-METRICS-REGISTRY-MIB
RFC 4148
RFC 6248
This module has been designated Obsolete. The registry will no longer be updated, and the current contents will be maintained as-is.
IANA-ITU-ALARM-TC-MIB
RFC 3877
Expert Review (Expert: Unassigned)
IANA-LANGUAGE-MIB
RFC 3165
Expert Review (Expert: Juergen Schoenwaelder, David Levi)
IANA-MALLOC-MIB
RFC 3559
RFC or designated expert review (Expert: Dave Thaler)
IANA-MAU-MIB
RFC 4836
Expert Review (Expert: Marek Hajduczenia, Operations and Management Area Directors (backup))
IANA-POWER-STATE-SET-MIB
RFC 7460
See
IANA-PRINTER-MIB
RFC 3805
Expert Review or RFC Required (Expert: Ira McDonald, Michael Sweet)
IANA-RTPROTO-MIB
RFC 2932
RFC or Expert Review (Expert: Dave Thaler)
IANA-SMF-MIB
RFC 7367
IANAsmfOpModeIdTC: First Come First Served.
IANAsmfRssaIdTC: 1-127, Standards Action; 128-239, Reserved for
Private or Local Use; 240-255, Experimental RFC.
IANA-STORAGE-MEDIA-TYPE-MIB
RFC 7666
Expert Review (Expert: Unassigned)
IANAifType-MIB
RFC 2863
RFC 8892
This is one of the available formats of the Interface Types (ifType) and Tunnel Types (tunnelType) registries. (Expert: Dave Thaler)
IANAolsrv2LinkMetricType-MIB
RFC 7184
Expert Review (Expert: Unassigned)
IANATn3270eTC-MIB
RFC 2561
Working Group Review (see DESCRIPTION clause associated with the MODULE-IDENTITY statement)
iCalendar Element Registries
Actions
RFC 5545
Expert Review with RFC Required (Expert: Bernard Desruisseaux, Ken Murchison, Mike Douglass)
Calendar User Types
RFC 5545
Expert Review with RFC Required (Expert: Bernard Desruisseaux, Ken Murchison, Mike Douglass)
Classifications
RFC 5545
Expert Review with RFC Required (Expert: Bernard Desruisseaux, Ken Murchison, Mike Douglass)
Components
RFC 5545
Expert Review with RFC Required (Expert: Bernard Desruisseaux, Ken Murchison, Mike Douglass)
Display Types
RFC 7986
Expert Review with RFC Required (Expert: Unassigned)
Feature Types
RFC 7986
Expert Review with RFC Required (Expert: Unassigned)
Free/Busy Time Types
RFC 5545
Expert Review with RFC Required (Expert: Bernard Desruisseaux, Ken Murchison, Mike Douglass)
Methods
RFC 5545
Expert Review with RFC Required (Expert: Bernard Desruisseaux, Ken Murchison, Mike Douglass)
Parameters
RFC 5545
Expert Review with RFC Required (Expert: Bernard Desruisseaux, Ken Murchison, Mike Douglass)
Participant Types
RFC 9073
Expert Review (Expert: Ken Murchison, Michael Douglass)
Participation Roles
RFC 5545
Expert Review with RFC Required (Expert: Bernard Desruisseaux, Ken Murchison, Mike Douglass)
Participation Statuses
RFC 5545
Expert Review with RFC Required (Expert: Bernard Desruisseaux, Ken Murchison, Mike Douglass)
Properties
RFC 5545
Expert Review with RFC Required (Expert: Bernard Desruisseaux, Ken Murchison, Mike Douglass)
Proximity Values
RFC 9074
Expert Review with RFC Required (Expert: Ken Murchison, Michael Douglass)
Relationship Types
RFC 5545
Expert Review with RFC Required (Expert: Bernard Desruisseaux, Ken Murchison, Mike Douglass)
REQUEST-STATUS Values
RFC 5546
Expert Review with RFC Required (Expert: Bernard Desruisseaux, Ken Murchison, Mike Douglass)
Resource Types
RFC 9073
Expert Review (Expert: Ken Murchison, Michael Douglass)
Schedule Agent Values Registry
RFC 6638
Expert Review with RFC Required (Expert: Unassigned)
Schedule Force Send Values Registry
RFC 6638
Expert Review with RFC Required (Expert: Unassigned)
STATUS Values
draft-ietf-calext-ical-tasks-17
Standards Action With Expert Review (Expert: Unassigned)
SUBSTATE Values
draft-ietf-calext-ical-tasks-17
Standards Action With Expert Review (Expert: Unassigned)
TASK-MODE Values
draft-ietf-calext-ical-tasks-17
Standards Action With Expert Review (Expert: Unassigned)
Value Data Types
RFC 5545
Expert Review with RFC Required (Expert: Bernard Desruisseaux, Ken Murchison, Mike Douglass)
IDNA Rules and Derived Property Values
IDNA Contextual Rules
RFC 5892
RFC 6452
RFC 8753
RFC 9233
IETF Review
IDNA Derived Properties
RFC 5892
RFC 6452
RFC 8753
RFC 9233
Expert Review (Expert: Patrik Faltstrom (team lead), Takahiro Nemoto, Peter Saint-Andre)
IEEE 802 Numbers
Ethertypes
RFC 9542
Not assigned by IANA. Per
RFC 9542
, updates to this registry
are coordinated with the expert. (Expert: Donald Eastlake (primary), Juan Carlos Zuniga (secondary))
Logical Link Control (LLC) Numbers
Not assigned by IANA. Per
RFC 9542
, updates to this registry
are coordinated with the expert. (Expert: Donald Eastlake (primary), Juan Carlos Zuniga (secondary))
Organizationally Unique Identifiers
Not assigned by IANA. Per
RFC 9542
, updates to this registry
are coordinated with the expert. (Expert: Donald Eastlake (primary), Juan Carlos Zuniga (secondary))
IEEE Std 802.15.4 IETF IE Subtype IDs
IEEE Std 802.15.4 IETF IE Subtype IDs
RFC 8137
Expert Review (Expert: Tero Kivinen, Pat Kinney)
IETF XML Registry
ns
RFC 3688
IETF-controlled space: IETF Review With Expert Review.
Non-IETF space: Specification Required.
(Expert: Tim Bray, Martin Thomson)
publicid
RFC 3688
IETF-controlled space: IETF Review With Expert Review.
Non-IETF space: Specification Required.
(Expert: Tim Bray, Martin Thomson)
rdfschema
RFC 3688
IETF-controlled space: IETF Review With Expert Review.
Non-IETF space: Specification Required.
(Expert: Tim Bray, Martin Thomson)
schema
RFC 3688
RFC 6685
IETF-controlled space: IETF Review With Expert Review.
Non-IETF space: Specification Required.
(Expert: Tim Bray and Martin Thomson for non-IODEF schemas, Kathleen Moriarty for IODEF schemas)
In Situ OAM (IOAM)
IOAM DEX Extension-Flags
RFC 9326
IETF Review
IOAM DEX Flags
RFC 9326
IETF Review
IOAM E2E-Type
RFC 9197
IETF Review
IOAM Namespace-ID
RFC 9197
0x0000: Expert Review.
0x0001-0x7FFF: Private Use.
0x8000-0xFFFF: Expert Review.
(Expert: Unassigned)
IOAM Option-Type
RFC 9197
IETF Review
IOAM POT-Flags
RFC 9197
IETF Review
IOAM POT-Type
RFC 9197
IETF Review
IOAM Trace-Flags
RFC 9197
IETF Review
IOAM Trace-Type
RFC 9197
IETF Review
In Situ OAM (IOAM) Capabilities
IOAM SoP Capability
draft-ietf-ippm-ioam-conf-state-10
IETF Review
IOAM TSF Capability
draft-ietf-ippm-ioam-conf-state-10
IETF Review
Incident Object Description Exchange Format (IODEF)
Structured Cybersecurity Information (SCI) Specifications
RFC 7203
Specification Required (Expert: Unassigned)
Incident Object Description Exchange Format v2 (IODEF)
Address-category
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
BulkObservable-type
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
BusinessImpact-severity
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
BusinessImpact-type
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
Confidence-rating
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
Contact-role
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
Contact-type
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
Counter-type
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
Counter-unit
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
Discovery-source
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
DomainData-domain-status
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
DomainData-system-status
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
Email-type
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
Expectation-action
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
ExtensionType-dtype
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
HashData-scope
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
Incident-purpose
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
Incident-status
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
IndicatorExpression-operator
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
Key-registryaction
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
NodeRole-category
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
PostalAddress-type
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
RecordPattern-offsetunit
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
RecordPattern-type
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
RegistryHandle-registry
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
Restriction
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
SoftwareReference-dtype
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
SoftwareReference-spec-id
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
System-category
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
System-ownership
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
SystemImpact-type
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
Telephone-type
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
TimeImpact-duration
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
TimeImpact-metric
RFC 7970
Expert Review (Expert: Roman Danyliw, Takeshi Takahashi)
Instance Manipulation Values
Instance Manipulation Values
RFC 3229
Specification Required (Expert: Unassigned)
Instant Message Disposition Notification (IMDN) Headers
IMDN Headers
RFC 5438
Specification Required (Expert: Unassigned)
Instant Messaging SRV Protocol Label Registry
Instant Messaging SRV Protocol Label Registry
RFC 3861
Specification Required (Expert: Unassigned)
Integrated Services Parameters
Compression Hints
RFC 3006
IETF Review
Parameter Names
RFC 2216
1-127: Parameters defined in
RFC 2215
128-254: Parameters defined by author of service specification
document (Service and Data Element Naming).
Service Names
RFC 2216
2-127: RFC Required.
128-254: Experimental use.
Inter-Asterisk eXchange (IAX) Parameters
IAX Authentication Methods
RFC 5457
Expert Review (Expert: Cullen Jennings)
IAX Calling Presentation
RFC 5457
Expert Review (Expert: Cullen Jennings)
IAX Calling Type of Number
RFC 5457
Expert Review (Expert: Cullen Jennings)
IAX Cause Codes
RFC 5457
Expert Review (Expert: Cullen Jennings)
IAX Control Frame Subclass
RFC 5457
Expert Review (Expert: Cullen Jennings)
IAX Control Frames
RFC 5457
Expert Review (Expert: Cullen Jennings)
IAX Dialplan Status Flags
RFC 5457
Expert Review (Expert: Cullen Jennings)
IAX Encryption Methods
RFC 5457
Expert Review (Expert: Cullen Jennings)
IAX Frame Types
RFC 5457
Expert Review (Expert: Cullen Jennings)
IAX HTML Command Subclasses
RFC 5457
Expert Review (Expert: Cullen Jennings)
IAX Information Elements
RFC 5457
Expert Review (Expert: Cullen Jennings)
IAX Media Formats
RFC 5457
Expert Review (Expert: Cullen Jennings)
IAX Meta Commands
RFC 5457
Expert Review (Expert: Cullen Jennings)
IAX Transit Network Identification Plan
RFC 5457
Expert Review
IAX Type of Network
RFC 5457
Expert Review (Expert: Cullen Jennings)
Interactive Connectivity Establishment (ICE)
ICE Options
RFC 8839
Specification Required (Expert: Ari Keränen)
ICE Transport Protocols
RFC 6544
IETF Review or IESG Approval
Interface Parameters
Interface Types (ifType)
RFC 1213
RFC 2863
RFC 7224
RFC 8892
Expert Review (Expert: Dave Thaler)
Transmission Number Values
RFC 1213
RFC 8892
Specification Required (Expert: Dave Thaler)
Tunnel Types (tunnelType)
RFC 4087
RFC 8675
RFC 8892
Expert Review (Expert: Dave Thaler)
Interior Gateway Protocol (IGP) Parameters
IGP Algorithm Type For Computing Flooding Topology
draft-ietf-lsr-dynamic-flooding-18
Expert Review (Expert: Unassigned)
IGP Algorithm Types
RFC 8665
Standards Action
IGP Flex-Algorithm Path Computation Rules
RFC 9917
Expert Review (Expert: Peter Psenak, Shraddha Hegde)
IGP Flexible Algorithm Definition Flags
RFC 9350
Standards Action
IGP Metric-Type
RFC 9350
RFC 9843
0-127: Standards Action.
128-255: User-Defined Metric.
IGP MSD-Types
RFC 8491
RFC 9702
Expert Review (Expert: Uma Chunduri, Jeff Tantsura)
Link Attribute Application Identifiers
RFC 9479
Expert Review (Expert: Les Ginsberg, Chris Hopps)
Path Computation Element (PCE) Capability Flags
RFC 9353
IETF Review
PCE Discovery (PCED) Sub-TLV Type Indicators
RFC 9353
Standards Action
Internet - Xerox Network System (XNS) Protocol Mappings
Internet - Xerox Network System (XNS) Protocol Mappings
Internet Control Message Protocol (ICMP) Parameters
Code Fields
RFC 2780
ICMP Extension Object Classes and Class Sub-types
RFC 4884
0-246: First Come First Served.
247-255: Private Use.
ICMP Type Numbers
RFC 2780
RFC 9899
IESG Approval or Standards Action
Internet Control Message Protocol version 6 (ICMPv6) Parameters
6LoWPAN Capability Bits
RFC 7400
IETF Review or IESG Approval
Address Registration Option Flags
RFC 8505
IETF Review or IESG Approval
Address Registration Option I-Field
RFC 8505
IETF Review or IESG Approval
Address Registration Option Status Values
RFC 6775
RFC 9010
Standards Action
Certificate option (Type 16) Cert Type field
RFC 3971
Standards Action
Crypto-Types
RFC 8928
Specification Required or IESG Approval (Expert: Mohit Sethi)
EDAR Message Flags
RFC 9685
IETF Review or IESG Approval
FMIPv6 Message Types (Value 154)
RFC 5568
RFC Required
ICMPv6 "Code" Fields
RFC 4443
ICMPv6 "type" Numbers
RFC 4443
RFC 9899
0-127 (Error messages): IETF Review.
128-255 (Informational messages): IETF Review.
IPv6 ND Router Advertisement Flags
RFC 5175
Standards Action or IESG Approval
IPv6 Neighbor Discovery Option Formats
RFC 4861
RFC Required
IPv6 Neighbor Discovery Prefix Information Option Flags
RFC 8425
Standards Action
Option-Code for Handover Assist Information Option (Type 29)
RFC 5271
Standards Action or IESG Approval
Option-Code for Mobile Node Identifier Option (Type 30)
RFC 5271
Standards Action or IESG Approval
P-Field Values
RFC 9685
Standards Action
PvD Option Flags
RFC 8801
Standards Action
Qtypes
RFC 4620
IETF Review
Trust Anchor option (Type 15) Name Type field
RFC 3971
RFC 6495
Standards Action or IESG Approval
Internet Date/Time Format
Timestamp Suffix Tag Keys
RFC 9557
Permanent: Specification Required.
Provisional: Expert Review.
(Expert: Ujjwal Sharma, Bron Gondwana)
Internet Group Management Protocol (IGMP) Type Numbers
"Code" Fields
RFC 9778
Standards Action
IGMP Type Numbers
RFC 9778
Standards Action
IGMP/MLD Extension Types
RFC 9279
0-65533: IETF Review.
65534-65535: Experimental Use.
IGMP/MLD Query Message Flags
RFC 9778
Standards Action
IGMP/MLD Report Message Flags
RFC 9778
Standards Action
Internet Key Exchange (IKE) Attributes
Additional Exchanges Defined-- XCHG values
RFC 2409
RFC 9395
Registry closed
Attribute Classes
RFC 2409
RFC 9395
Registry closed
Encryption Algorithm Class Values (Value 1)
RFC 2409
RFC 9395
Registry closed
Exchange Type
RFC 2408
RFC 9395
Registry closed
Group Description (Value 4)
RFC 2409
RFC 9395
Registry closed
Group Type (Value 5)
RFC 2409
RFC 9395
Registry closed
Hash Algorithm (Value 2)
RFC 2409
RFC 9395
Registry closed
IPSEC Authentication Methods (Value 3)
RFC 2409
RFC 9395
Registry closed
ISAKMP Domain of Interpretation (DOI)
RFC 2408
RFC 9395
Registry closed
Life Type (Value 11)
RFC 2409
RFC 9395
Registry closed
Next Payload Types
RFC 2408
RFC 9395
Registry closed
Notify Message Types
RFC 2408
RFC 9395
Notify Messages - Error Types (1-8191)
RFC 2408
RFC 9395
Registry closed
PRF (Value 13)
RFC 2409
RFC 9395
Registry closed
Internet Key Exchange Version 2 (IKEv2) Parameters
Group Key Bag Attributes
RFC 9838
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
Group SA Attributes
RFC 9838
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
Group-Wide Policy Attributes
RFC 9838
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
IKEv2 Authentication Method
RFC 7296
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
IKEv2 Certificate Encodings
RFC 7296
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
IKEv2 Configuration Payload Attribute Types
RFC 7296
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
IKEv2 Configuration Payload CFG Types
RFC 7296
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
IKEv2 Exchange Types
RFC 7296
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
IKEv2 Gateway Identity Types
RFC 5685
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
IKEv2 Hash Algorithms
RFC 7427
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
IKEv2 Identification Payload ID Types
RFC 7296
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
IKEv2 Notification IPCOMP Transform IDs (Value 16387)
RFC 7296
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
IKEv2 Notify Message Error Types
RFC 7296
0-8191: Expert Review.
8192-16383: Private Use.
(Expert: Tero Kivinen, Valery Smyslov)
IKEv2 Notify Message Status Types
RFC 7296
16384-40959: Expert Review.
40960-65535: Private Use.
(Expert: Tero Kivinen, Valery Smyslov)
IKEv2 Payload Types
RFC 7296
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
IKEv2 Post-quantum Preshared Key ID Types
RFC 8784
1-127: Expert Review.
128-255: Private Use.
(Expert: Tero Kivinen, Valery Smyslov)
IKEv2 Secure Password Methods
RFC 6467
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
IKEv2 Security Protocol Identifiers
RFC 7296
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
IKEv2 Traffic Selector Types
RFC 7296
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
Member Key Bag Attributes
RFC 9838
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
ROHC Attribute Types
RFC 5857
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
Transform Type Values
RFC 7296
RFC 9370
Expert Review (Expert: Tero Kivinen, Valery Smyslov)
Internet Message Access Protocol (IMAP) Capabilities
IMAP and JMAP Keywords
RFC 5788
RFC 8621
Expert Review (Expert: Arnt Gulbrandsen, Barry Leiba)
IMAP ANNOTATE Extension Attributes
RFC 5257
Standards Track or IESG-Approved Experimental RFC
IMAP ANNOTATE Extension Entries
RFC 5257
Under vendor namespace: First Come First Served.
Not under vendor namespace: Standards Track or IESG-Approved Experimental RFC.
IMAP Capabilities
RFC 3501
RFC 9051
IETF Review
IMAP Mailbox Name Attributes
RFC 3501
RFC 8457
RFC 9051
IETF Review or Expert Review (Expert: Barry Leiba, Bron Gondwana)
IMAP METADATA Mailbox Entry Registry
RFC 5464
Standards Track or IESG-Approved Experimental RFC
IMAP METADATA Server Entry Registry
RFC 5464
Standards Track or IESG-Approved Experimental RFC
IMAP Quota Resource Types
RFC 9208
Specification Required (Expert: Alexey Melnikov, Ken Murchison)
IMAP Response Codes
RFC 5530
Expert Review (Expert: Arnt Gulbrandsen, Dave Cridland)
IMAP Threading Algorithms
RFC 5256
Standards Track or IESG-Approved Experimental RFC
IMAP URLAUTH Access Identifiers and Prefixes
RFC 5593
IETF Review
IMAP URLAUTH Authorization Mechanism Registry
RFC 4467
Standards Track or IESG-Approved Experimental RFC
LIST-EXTENDED options
RFC 5258
FCFS; IANA approval template in
RFC 5258
section 9.3
LIST-EXTENDED response
RFC 5258
IANA approval template in
RFC 5258
section 9.3
Internet Message Store Events
Event Names
RFC 5423
name starts wth "vnd."; intended for private use: First Come First Served.
name doesn't start with "vnd."; intended for interoperable use: IETF Review.
Event Parameters
RFC 5423
name starts wth "vnd."; intended for private use: First Come First Served.
name doesn't start with "vnd."; intended for interoperable use: IETF Review.
Internet Open Trading Protocol (IOTP) Codes
Algorithm/Name
RFC 2801
Expert Review (Expert: David Burdett)
Attribute/Content
RFC 2801
RFC Required (Expert: David Burdett)
Brand/BrandId
RFC 2801
First Come First Served (Expert: David Burdett)
CurrencyAmount/CurrCode
RFC 2801
First Come First Served (Expert: David Burdett)
CurrencyAmount/CurrCodeType
RFC 2801
Expert Review (Expert: David Burdett)
DeliveryData/DelivMethod
RFC 2801
Expert Review (Expert: David Burdett)
PackagedContent/Content
RFC 2801
Expert Review (Expert: David Burdett)
RelatedTo/RelationshipType
RFC 2801
Expert Review (Expert: David Burdett)
Status/StatusType
RFC 2801
RFC Required (Expert: David Burdett)
TradingRole/Trading Role
RFC 2801
RFC Required (Expert: David Burdett)
TransId/IotpTransType
RFC 2801
RFC Required (Expert: David Burdett)
Internet Printing Protocol (IPP) Registrations
Attribute Group Tags
RFC 8011
Specification Required (Expert: Ira McDonald, Michael Sweet)
Attribute Syntaxes
RFC 8011
Specification Required (Expert: Ira McDonald, Michael Sweet)
Attributes
RFC 8011
Expert Review (Expert: Ira McDonald, Michael Sweet)
Enum Attribute Values
RFC 8011
type1: Specification Required.
type2: Expert Review.
(Expert: Ira McDonald, Michael Sweet)
Keyword Attribute Values
RFC 8011
type1: Specification Required.
type2: Expert Review.
(Expert: Ira McDonald, Michael Sweet)
Objects
RFC 8011
Specification Required (Expert: Ira McDonald, Michael Sweet)
Operations
RFC 8011
Expert Review (Expert: Ira McDonald, Michael Sweet)
Out-of-Band Attribute Value Tags
RFC 8011
Specification Required (Expert: Ira McDonald, Michael Sweet)
Status Codes
RFC 8011
Expert Review (Expert: Ira McDonald, Michael Sweet)
Internet Protocol version 4 (IPv4) Address Space
Allocations made from the Current Recovered IPv4 Pool
Global Policy for Post Exhaustion IPv4 Allocation Mechanisms by the IANA (Ratified 6 May 2012)
Current Recovered IPv4 Pool
Global Policy for Post Exhaustion IPv4 Allocation Mechanisms by the IANA (Ratified 6 May 2012)
IPv4 Address Space
RFC 7249
Allocations to RIRs are made in line with the Global Policy published at
All other assignments require IETF Review.
IPv4 Special-Purpose Address Space
RFC 5736
RFC 6890
RFC 8190
IETF Review
Internet Protocol Version 4 (IPv4) Parameters
IP Option Numbers
Not defined
IP Time to Live Parameter
Not defined
IP TOS Parameters
Registrations no longer accepted
IPv4 Router Alert Option Values
RFC 5350
IETF Review
Type-of-Service Values
Registrations no longer accepted
Internet Protocol version 6 (IPv6) Global Unicast Allocations
IPv6 Global Unicast Address Space
RFC 7249
Allocations to RIRs are made in line with the Global Policy published at
All other assignments require IETF Review.
IPv6 Special-Purpose Address Space
RFC 4773
RFC 6890
RFC 8190
IETF Review
Internet Protocol Version 6 (IPv6) Parameters
Destination Options and Hop-by-Hop Options
RFC 8200
RFC 2780
RFC 9673
IESG Approval, IETF Review or Standards Action
IPv6 Extension Header Types
RFC 2780
RFC 5237
RFC 7045
RFC 9899
Standards Action or IESG Approval
Next Header Types
RFC 8200
RFC 2780
RFC 7045
Routing Types
RFC 8200
RFC 5871
IETF Review or IESG Approval
RPL-option-TLV
RFC 6553
IETF Review
Segment Routing Header Flags
RFC 8754
IETF Review
Segment Routing Header TLVs
RFC 8754
IETF Review
TaggerId Types
RFC 6621
IETF Review
Internet Small Computer System Interface (iSCSI) Parameters
iSCSI Asynchronous Events
RFC 7143
Standards Action
iSCSI authentication methods
RFC 7143
IETF Review
iSCSI digests
RFC 7143
IETF Review
iSCSI Login Response Status Codes
RFC 7143
Standards Action
iSCSI Login/Text Keys
RFC 7145
RFC 7143
IETF Review
iSCSI Opcodes
RFC 7143
Standards Action to define the semantics of the opcode;
Expert Review to select the specific opcode(s) (Expert: Unassigned)
iSCSI Protocol Level
RFC 7144
Expert Review and Standards Action (Expert: Unassigned)
iSCSI Reject Reason Codes
RFC 7143
Standards Action
iSCSI Task Management Function Codes
RFC 7143
Standards Action
iSCSI Task Management Function Response Codes
RFC 7144
Standards Action
iSER Opcodes
RFC 7145
Standards Action
SRP_GROUP key values
RFC 3723
Specification Required (Expert: Unassigned)
Internet Storage Name Service (iSNS) Parameters
Block Storage Protocols
RFC 4171
Expert Review (by IPS WG Chairperson or by Designated Expert) (Expert: David Black)
Standard iSNS Attributes
RFC 4171
IETF Review
Intrusion Detection Exchange Protocol (IDXP) Options
IDXP Options
RFC 4767
Expert Review (Expert: Ben Feinstein)
Intrusion Detection Message Exchange Format (IDMEF) Parameters
Attribute Values
RFC 4765
Specification Required (Expert: Unassigned)
Class and Attribute Names
RFC 4765
IETF Review
IP Flow Information Export (IPFIX) Entities
IPFIX Information Element Data Types
RFC 5610
Standards Action
IPFIX Information Element Semantics
RFC 5610
Standards Action
IPFIX Information Element Units
RFC 5610
Expert Review (Expert: IE Doctors (Andrew Feren, Brian Trammell, Nevil Brownlee, Paul Aitken))
IPFIX Information Elements
RFC 7012
RFC 9710
Expert Review (Expert: IE Doctors (Andrew Feren, Brian Trammell, Nevil Brownlee, Paul Aitken))
IPFIX ipv6ExtensionHeaders Bits
RFC 9740
Expert Review (Expert: Paul Aitken, Jen Linkova)
IPFIX Set IDs
RFC 7011
Standards Action
IPFIX Structured Data Types Semantics
RFC 6313
Standards Action
IPFIX Version Numbers
RFC 7011
Standards Action
IP Multicast Traceroute Facility (Mtrace)
Mtrace2 Forwarding Codes
RFC 8487
Specification Required (Expert: Unassigned)
Mtrace2 TLV Types
RFC 8487
Specification Required (Expert: Unassigned)
IP Version Numbers
IP Version Numbers
RFC 2780
Standards Action
IPS Protocol# (Protocol Number) Field
Protocol# (Protocol Number) Field
RFC 3643
1-239: Standards Action.
240-255: Private Use.
IPSECKEY Resource Record Parameters
Algorithm Type Field
RFC 4025
RFC 9373
IETF Review
Gateway Type Field
RFC 4025
Standards Action
IPv4 Multicast Address Space
AD-HOC Block I (224.0.2.0 - 224.0.255.255)
RFC 5771
Expert Review, IESG Approval, or Standards Action (Expert: Stig Venaas)
AD-HOC Block II (224.3.0.0-224.4.255.255 (224.3/16, 224.4/16))
RFC 5771
Expert Review, IESG Approval, or Standards Action (Expert: Stig Venaas)
AD-HOC Block III (233.252.0.0-233.255.255.255 (233.252/14))
RFC 5771
Expert Review, IESG Approval, or Standards Action (Expert: Stig Venaas)
DIS Transient Groups 224.252.0.0-224.255.255.255 (224.252/14))
RFC 2365
(Expert: Stig Venaas)
GLOP Block
RFC 3180
(Expert: Stig Venaas)
Internetwork Control Block (224.0.1.0 - 224.0.1.255 (224.0.1/24))
RFC 5771
Expert Review, IESG Approval, or Standards Action (Expert: Stig Venaas)
Local Network Control Block (224.0.0.0 - 224.0.0.255 (224.0.0/24))
RFC 5771
Expert Review, IESG Approval, or Standards Action (Expert: Stig Venaas)
Relative Addresses used with Scoped Multicast Addresses
RFC 5771
(Expert: Stig Venaas)
RESERVED (224.1.0.0-224.1.255.255 (224.1/16))
RFC 5771
(Expert: Stig Venaas)
RESERVED (224.5.0.0-224.251.255.255 (251 /16s))
RFC 5771
(Expert: Stig Venaas)
RESERVED (225.0.0.0-231.255.255.255 (7 /8s))
RFC 5771
(Expert: Stig Venaas)
Scoped Multicast Ranges
RFC 5771
(Expert: Stig Venaas)
SDP/SAP Block (224.2.0.0-224.2.255.255 (224.2/16))
RFC 5771
(Expert: Stig Venaas)
Source-Specific Multicast Block (232.0.0.0-232.255.255.255 (232/8))
RFC 5771
(Expert: Stig Venaas)
Unicast-Prefix-based IPv4 Multicast Addresses
RFC 6034
(Expert: Stig Venaas)
IPv6 Address Space
IPv6 Address Space
IPv6 Anycast Address Space
IPv6 Anycast Address Space
RFC 4291
RFC 2526
IESG Approval
IPv6 Anycast Subnet-Router Anycast Address
RFC 4291
IESG Approval
IPv6 Low Power Personal Area Network Parameters
Critical 6LoWPAN Routing Header Type
RFC 8138
RFC Required
Dispatch Type Field
RFC 4944
RFC 8025
Specification Required (Expert: Carles Gomez, Shwetha Bhandari)
Elective 6LoWPAN Routing Header Type
RFC 8138
RFC Required
ESC Extension Types
RFC 8066
Specification Required (Expert: Shwetha Bhandari)
LOWPAN_NHC Header Type
RFC 6282
IETF Review
Short Address Fields
RFC 4944
Specification Required (Expert: Carles Gomez)
IPv6 Multicast Address Space
Dynamic Multicast Group IDs
RFC 3307
draft-ietf-pim-updt-ipv6-dyn-mcast-addr-grp-id-13
0x90000000-0xEFFFFFFF: Standards Action.
0xFD000000-0xFDFFFFFF: Private Use.
0xFE000000-0xFEFFFFFF: Experimental Use.
(Expert: Stig Venaas)
IPv6 Multicast Address Scopes
RFC 7346
IETF Review (Expert: Stig Venaas)
Link-Local Scope Multicast Addresses
RFC 3307
Expert Review (Expert: Stig Venaas)
Node-Local Scope Multicast Addresses
RFC 4291
RFC 3307
Expert Review (Expert: Stig Venaas)
Site-Local Scope Multicast Addresses
RFC 3307
Expert Review (Expert: Stig Venaas)
Unicast-based (Including SSM) Multicast Group IDs
RFC 3307
Addresses in FF3X:0::/32 but not listed below are reserved for future SSM
address use, but are currently invalid.
FF3X:0:0:0:0:0:0:0-FF3X:0:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF (FF3X:0::/32)

FF3X:0:0:0:0:0:4000:0-FF3X:0:0:0:0:0:7FFF:FFFF - Expert Review; see registry
at
FF3X:0:0:0:0:0:8000:0-FF3X:0:0:0:0:0:FFFF:FFFF - Uses dynamic assignment
according to the protocols listed in the
Dynamic Multicast Group IDs
registry (Expert: Stig Venaas)
Variable Scope Multicast Addresses
RFC 3307
Expert Review (Expert: Stig Venaas)
IPv6 Over the TSCH Mode of IEEE 802.15.4 (6TiSCH)
6P CellOptions Bitmap
RFC 8480
IETF Review or IESG Approval
6P Command Identifiers
RFC 8480
IETF Review or IESG Approval
6P Message Types
RFC 8480
IETF Review or IESG Approval
6P Return Codes
RFC 8480
IETF Review or IESG Approval
6P Scheduling Function Identifiers
RFC 8480
0-127: IETF Review or IESG Approval.
128-255: Expert Review.
(Expert: Xavi Vilajosana Guillen, Thomas Watteyne)
6P Version Numbers
RFC 8480
IETF Review or IESG Approval
Constrained Join Protocol (CoJP) Key Usage
RFC 9031
Integer values less than -65536: Private Use.
Integer values from -65536 to -257: Specification Required.
Integer values from -256 to 255: Standards Action.
Integer values from 256 to 65535: Specification Required.
Integer values greater than 65535: Expert Review.
(Expert: Mališa Vučinić, Michael Richardson)
Constrained Join Protocol (CoJP) Parameters
RFC 9031
Integer values less than -65536: Private Use.
Integer values from -65536 to -257: Specification Required.
Integer values from -256 to 255: Standards Action.
Integer values from 256 to 65535: Specification Required.
Integer values greater than 65535: Expert Review.
(Expert: Mališa Vučinić, Michael Richardson)
Constrained Join Protocol (CoJP) Unsupported Configuration Codes
RFC 9031
Integer values less than -65536: Private Use.
Integer values from -65536 to -257: Specification Required.
Integer values from -256 to 255: Standards Action.
Integer values from 256 to 65535: Specification Required.
Integer values greater than 65535: Expert Review.
(Expert: Mališa Vučinić, Michael Richardson)
IPv6 Router Alert Option Values
IPv6 Router Alert Option Values
RFC 2711
RFC 9805
Registry closed
IPv6 Top Level Aggregation Identifier Assignments
Sub-TLA Identifier Assignments
RFC 4147
Registrations no longer accepted
TLA Identifier Assignments
RFC 4147
Registrations no longer accepted
IS-IS
IS-IS Application Identifiers for Generic Information TLV
RFC 6823
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Authentication Type Codes
RFC 5304
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Bit Values for Flooding Parameters Flags Sub-TLV
RFC 9681
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Bit Values for Prefix Attribute Flags Sub-TLV
RFC 7794
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Group Address Type Codes for GADDR-TLV
RFC 7176
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Multi-Topology ID Values
RFC 5120
0-3995: Expert Review.
3996-4095: Private Use.
(Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Neighbor Link-Attribute Bit Values
RFC 5029
RFC 9667
RFC 9650
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS PDU Registry
RFC 7176
IETF Review
IS-IS SRv6 Adjacency SID Sub-TLVs Flags
RFC 9352
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS SRv6 Capabilities Sub-TLV Flags
RFC 9352
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS SRv6 End SID Sub-TLV Flags
RFC 9352
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS SRv6 Locator TLV Flags
RFC 9352
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Sub-Sub-TLV Codepoints for Application-Specific Link Attributes
RFC 9479
RFC 9885
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Sub-Sub-TLVs for BIER Info Sub-TLV
RFC 8401
RFC 9885
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Sub-Sub-TLVs for Flexible Algorithm Definition Sub-TLV
RFC 9350
RFC 9885
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Sub-Sub-TLVs for Flood Reflection Discovery Sub-TLV
RFC 9377
RFC 9885
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Sub-Sub-TLVs for SRv6 Capabilities Sub-TLV
RFC 9352
RFC 9885
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Sub-Sub-TLVs for SRv6 SID Sub-TLVs
RFC 9352
RFC 9885
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Sub-TLVs for Application-Specific SRLG TLV
RFC 9479
RFC 9885
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Sub-TLVs for Flooding Parameters TLV
RFC 9681
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Sub-TLVs for IS-IS Router CAPABILITY TLV
RFC 7981
RFC 9885
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Sub-TLVs for MT-Capability TLV
RFC 6329
RFC 9885
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Sub-TLVs for MT-Port-Cap-TLV
RFC 7176
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Sub-TLVs for Reverse Metric TLV
RFC 8500
RFC 9885
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Sub-TLVs for Segment Identifier/Label Binding TLVs
RFC 8667
RFC 9885
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Sub-TLVs for the Area Proxy TLV
RFC 9666
Expert Review with RFC Required (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Sub-TLVs for TLVs Advertising Neighbor Information
RFC 5305
RFC 5316
RFC 7370
RFC 8668
RFC 9885
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Sub-TLVs for TLVs Advertising Prefix Reachability
RFC 5305
RFC 7370
RFC 9352
RFC 9885
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
IS-IS Top-Level TLV Codepoints
RFC 3563
RFC 6233
RFC 7356
RFC 8918
RFC 9885
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
LSP Flooding Scope Identifier Registry
RFC 7356
Expert Review (Expert: Chris Hopps, Hannes Gredler, Les Ginsberg)
Java Message Service (JMS) URI Scheme Variants
JMS URI Scheme Variants
RFC 6167
First Come First Served
JSCalendar
JSCalendar Enum Values
RFC 8984
Expert Review (Expert: Robert Stepanek, Neil Jenkins, Michael Douglass)
JSCalendar Properties
RFC 8984
draft-ietf-jmap-calendars-22
Expert Review (Expert: Robert Stepanek, Neil Jenkins, Michael Douglass)
JSCalendar Types
RFC 8984
Expert Review (Expert: Robert Stepanek, Neil Jenkins, Michael Douglass)
JSContact
JSContact Enum Values
RFC 9553
Major version change required: Standards Action.
All other assignments: Specification Required.
(Expert: Michael Douglass, Mario Loffredo, Robert Stepanek)
JSContact Properties
RFC 9553
Major version change required: Standards Action.
All other assignments: Specification Required.
(Expert: Michael Douglass, Mario Loffredo, Robert Stepanek)
JSContact Types
RFC 9553
Major version change required: Standards Action.
All other assignments: Specification Required.
(Expert: Michael Douglass, Mario Loffredo, Robert Stepanek)
JSContact Version
RFC 9553
Major version change required: Standards Action.
All other assignments: Specification Required.
(Expert: Michael Douglass, Mario Loffredo, Robert Stepanek)
JSON Meta Application Protocol (JMAP)
JMAP Capabilities
RFC 8620
intended use field is “common" or “placeholder”: Specification Required.
all other values: Expert Review.
(Expert: Neil Jenkins, Chris Newman, Arnt Gulbrandsen, Joris Baum)
JMAP Data Types
RFC 9404
Specification Required (Expert: Ken Murchison, Neil Jenkins, Arnt Gulbrandsen, Joris Baum)
JMAP Error Codes
RFC 8620
Expert Review (Expert: Neil Jenkins, Chris Newman, Arnt Gulbrandsen, Joris Baum)
JSON Object Signing and Encryption (JOSE)
JSON Web Encryption Compression Algorithms
RFC 7518
Specification Required (Expert: Sean Turner, Mike Jones, Filip Skokan)
JSON Web Key Elliptic Curve
RFC 7518
RFC 7638
Specification Required (Expert: Sean Turner, Mike Jones, Filip Skokan)
JSON Web Key Operations
RFC 7517
Specification Required (Expert: Sean Turner, Mike Jones, Filip Skokan)
JSON Web Key Parameters
RFC 7517
RFC 7638
Specification Required (Expert: Sean Turner, Mike Jones, Filip Skokan)
JSON Web Key Set Parameters
RFC 7517
Specification Required (Expert: Sean Turner, Mike Jones, Filip Skokan)
JSON Web Key Types
RFC 7518
RFC 7638
Specification Required (Expert: Sean Turner, Mike Jones, Filip Skokan)
JSON Web Key Use
RFC 7517
Specification Required (Expert: Sean Turner, Mike Jones, Filip Skokan)
JSON Web Signature and Encryption Algorithms
RFC 7518
RFC 9864
Specification Required (Expert: Sean Turner, Mike Jones, Filip Skokan)
JSON Web Signature and Encryption Header Parameters
RFC 7515
Specification Required (Expert: Sean Turner, Mike Jones, Filip Skokan)
JSON Web Token (JWT)
JSON Web Token Claims
RFC 7519
Specification Required (Expert: Brian Campbell, Mike Jones, Nat Sakimura, Filip Skokan)
JWT Confirmation Methods
RFC 7800
Specification Required (Expert: John Bradley, Hannes Tschofenig)
PASSporT RCD Claim Types
RFC 9795
Specification Required (Expert: Chris Wendt, Jon Peterson)
PASSporT Resource Priority Header (rph) Types
RFC 8443
Specification Required (Expert: Martin Dolly, Subir Das)
Personal Assertion Token (PASSporT) Extensions
RFC 8225
Specification Required (Expert: Chris Wendt (primary), Russ Housley (secondary))
JSONPath
Function Extensions
RFC 9535
Expert Review (Expert: Glyn Normington)
Kerberized Internet Negotiation of Keys (KINK) Parameters
KINK Error Codes
RFC 4430
0-8191: Standards Action or non standards-track
RFCs with Expert Review.
8192-16383: Private Use.
16384-4294967295: Reserved.
(Expert: Stewart Bryant, Danny McPherson)
KINK Message Types
RFC 4430
1-127: Standards Action or non standards-track
RFCs with Expert Review.
128-255: Private Use.
(Expert: Shoichi Sakane, Ken'ichi Kamada)
KINK Next Payload Types
RFC 4430
0-127: Standards Action or non standards-track
RFCs with Expert Review.
128-255: Private Use.
(Expert: Shoichi Sakane, Ken'ichi Kamada)
Kerberos Parameters
FAST Armor Types
RFC 6113
Standards Action
FAST Options
RFC 6113
Standards Action
Kerberos Checksum Type Numbers
RFC 3961
Standards Action for standards-track RFCs; non-standards-track
RFCs must be reviewed by an expert. (Expert: Ken Raeburn)
Kerberos Encryption Type Numbers
RFC 3961
Standards Action for standards-track RFCs; non-standards-track
RFCs must be reviewed by an expert. (Expert: Ken Raeburn)
Kerberos Message Transport Types
RFC 6784
IETF Review
Kerberos Second Factor Types
RFC 9588
Specification Required (Expert: Simo Sorce, Greg Hudson)
Kerberos SPAKE Groups
RFC 9588
Specification Required (Expert: Simo Sorce, Greg Hudson)
Kerberos TCP Extensions
RFC 5021
0-29: Standards Action or IESG Approval.
30: Reserved.
Pre-authentication and Typed Data
RFC 6113
Expert Review (Expert: Sam Hartman (primary), Larry Zhu (secondary))
Well-Known Kerberos Principal Names
RFC 6111
Specification Required (Expert: Unassigned)
Well-Known Kerberos Realm Names
RFC 6111
Specification Required (Expert: Unassigned)
Kerberos V GSS-API Mechanism Parameters
Kerberos V GSS-API Mechanism Extension Types
RFC 6542
0x00000000 - 0x000003FF: IETF Review.
0x00000400 - 0xFFFFF3FF: Specification Required.
(Expert: Unassigned)
Kerberos V GSS-API Token Type Identifiers
RFC 4121
RFC 7055
Expert Review (Expert: Sam Hartman)
Keying and Authentication for Routing Protocols (KARP) Parameters
Cryptographic Protocol ID
RFC 7166
Standards Action
KeyNote Parameters
KeyNote app_domain Identifiers
RFC 2704
First Come First Served
KeyNote Public Key Format Identifiers
RFC 2704
Specification Required (Expert: Unassigned)
KeyNote Signature Algorithm Identifiers
RFC 2704
Specification Required (Expert: Unassigned)
KeyTable
KeyTable AlgIDs
RFC 7210
First Come First Served
KeyTable KDFs
RFC 7210
First Come First Served
KeyTable Protocols
RFC 7210
Specification Required (Expert: Unassigned)
Label Distribution Protocol (LDP) Parameters
Experiment ID Name Space
RFC 5036
0x00000000-0xefffffff: First Come First Served.
0xf0000000-0xffffffff: Experiment Ids - Reserved for Private Use.
Forwarding Equivalence Class (FEC) Type Name Space
RFC 5036
RFC 7358
0-127: IETF Review.
128-191: First Come First Served.
LDP MP Opaque Value Element basic type
RFC 6388
Standards Action
LDP MP Opaque Value Element extended type
RFC 6388
0-32767: Standards Action.
32768-65535: First Come First Served.
LDP MP Status Value Element type
RFC 6388
Standards Action
LDP Targeted Application Identifier
RFC 8223
0x0001-0x1FFF: IETF Review.
0x2000-0xF7FF: First Come First Served.
MAC Flush Flags
RFC 7361
Standards Action
Message Type Name Space
RFC 5036
0x0001-0x00FF: IETF Review.
0x0100-0x01FF: IETF Review.
0x0200-0x02FF: IETF Review.
0x0300-0x03FF: IETF Review.
0x0400-0x04FF: IETF Review.
0x0500-0x05FF: IETF Review.
0x0600-0x3DFF: IETF Review.
0x3E00-0x3EFF: LDP Vendor-Private Extensions.
0x3F00-0x3FFF: LDP Experimental Extensions.
Status Code Name Space
RFC 5036
0x00000000-0x1FFFFFFF: IETF Review.
0x20000000-0x3EFFFFFF: First Come First Served.
0x3F000000-0x3FFFFFFF: Private Use.
TLV Type Name Space
RFC 5036
0x0001-0x07FF: IETF Review.
0x0800-0x08FF (CR-LDP): IETF Review.
0x0900-0x3DFF: IETF Review.
0x3E00-0x3EFF: LDP Vendor-Private Extensions.
0x3F00-0x3FFF: LDP Experimental Extensions.
Label Generation Ruleset (LGR) Dispositions
Private Dispositions
RFC 7940
First Come First Served
Standard Dispositions
RFC 7940
Specification Required (Expert: Unassigned)
Language Tags
Language Subtag Registration Form Archive
RFC 5646
See the Language Subtag Registry.
Language Subtag Registry
RFC 5645
RFC 5646
Expert Review (Expert: Doug Ewell)
Language Tag Extensions
RFC 5646
IETF Review or IESG Approval
Language Tag Registration Form Archive (OBSOLETE)
RFC 3066
RFC 4646
Registry closed
Language Tags (OBSOLETE)
RFC 3066
RFC 4646
Registry closed
Layer Two Tunneling Protocol "L2TP"
ATM Alarm Status AVP (Attribute Type 88) Values
RFC 4454
Expert Review (Expert: Carlos Pignataro (primary), Ignacio Goyret (secondary))
ATM-Specific Sublayer bits
RFC 4454
IETF Review
Bearer Field definition
RFC 2661
Standards Action
Circuit Status Bits
RFC 3931
IETF Review
Control Message Attribute Value Pairs
RFC 3438
Expert Review (Expert: Carlos Pignataro (primary), Ignacio Goyret (secondary))
Data Sequencing Level
RFC 3931
Expert Review (Expert: Carlos Pignataro (primary), Ignacio Goyret (secondary))
Default L2-Specific Sublayer bits
RFC 3931
Framing Field definition
RFC 2661
Standards Action
L2-Specific Sublayer Type
RFC 3931
Expert Review (Expert: Carlos Pignataro (primary), Ignacio Goyret (secondary))
L2TPv3 Pseudowire Types
RFC 3931
0-32767: Expert Review.
32768-65535: First Come First Served.
(Expert: Carlos Pignataro (primary), Ignacio Goyret (secondary))
Leading Bits of the L2TP AVP Header
RFC 2661
RFC 3931
Standards Action
Leading Bits of the L2TP Message Header
RFC 2661
RFC 3931
Standards Action
Message Type AVP (Attribute Type 0) Values
RFC 3438
Expert Review (Expert: Carlos Pignataro (primary), Ignacio Goyret (secondary))
PPP Disconnect Cause Code (Attribute Type 46) Values
RFC 3145
Proxy Authen Type AVP (Attribute Type 29) Values
RFC 2661
First Come First Served
Result Code AVP (Attribute Type 1) Values
RFC 3438
Expert Review (Expert: Carlos Pignataro (primary), Ignacio Goyret (secondary))
Service Category AVP (Attribute Type 42) Flag Field
RFC 3301
Specification Required (Expert: Carlos Pignataro (primary), Ignacio Goyret (secondary))
VCCV Capability AVP (Attribute Type 96) Values
RFC 5085
IETF Review
Layered Coding Transport (LCT) Header Extension Types
LCT Header Extension Types
RFC 5651
0-63: IETF Review.
64-127: Specification Required.
128-191: IETF Review.
192-255: Specification Required.
(Expert: Vincent Roca)
Level of Assurance (LoA) Profiles
Level of Assurance Profiles
RFC 6711
Expert Review (Expert: John Bradley, Joni Brennan, Leif Johansson)
Licklider Transmission Protocol (LTP) Parameters
LTP Cancel Segment Reason Codes
RFC 7116
Specification Required (Expert: Unassigned)
LTP Ciphersuites
RFC 5327
Specification Required (Expert: Unassigned)
LTP Client Service Identifiers
RFC 7116
Specification Required (Expert: Unassigned)
LTP Engine Numbers
RFC 7116
1-16383: Expert Review.
268435456-4398046511103: First Come First Served for requests of up to 16384 values. Larger requests require Expert Review..
(Expert: Unassigned)
LTP Extension Tags
RFC 5326
Specification Required (Expert: Unassigned)
Lightweight Directory Access Protocol (LDAP) - pcimSchema Descriptors
pcimSchema LDAP Descriptors
RFC 3703
TBD
Lightweight Directory Access Protocol (LDAP) Parameters
Attribute Description Options
RFC 4520
x- Private Use (can not be registered)
e- Reserved for Experiments, First Come First Served
All others: Standards Action or Expert Review with Specification (Expert: Rolf Sonneveld, Andrew Findlay)
Bind Authentication Method
RFC 4520
0-1023 Standards Action (can not start with e- or x-)
1024-4095 Expert Review with Specification Required (can not start with e- or x-)
4096-16383 First Come First Served (Shall start with e-)
16384 and higher Private Use (Shall start with x-) (Expert: Rolf Sonneveld, Andrew Findlay)
Internet Directory Numbers (iso.org.dod.internet.directory [1.3.6.1.1.])
RFC 4520
RFC 2578
Specification Required (Expert: Rolf Sonneveld, Andrew Findlay)
LDAP authzid prefixes
RFC 4520
x- Private Use
e- Reserved for Experiments, First Come First Served
All others, Standards Action or Expert Review with Specification Required (Expert: Rolf Sonneveld, Andrew Findlay)
LDAP Filter Choices
RFC 4520
Standards Action
LDAP ModifyRequest Operations
RFC 4520
0-1023 Standards Action (can not start with e- or x-)
1024-4095 Expert Review with Specification Required (can not start with e- or x-)
4096-16383 First Come First Served (Shall start with e-)
16384 and higher Private Use (Shall start with x-) (Expert: Rolf Sonneveld, Andrew Findlay)
LDAP Search Scopes
RFC 4520
0-1023 Standards Action (can not start with e- or x-)
1024-4095 Expert Review with Specification Required (can not start with e- or x-)
4096-16383 First Come First Served (Shall start with e-)
16384 and higher Private Use (Shall start with x-) (Expert: Rolf Sonneveld, Andrew Findlay)
LDAP Syntaxes
RFC 4520
First Come First Served
LDAPMessage types
RFC 4520
Standards Action
Object Identifier Descriptors
RFC 4520
x- Private Use (can not be registered)
e- Reserved for Experiments, First Come First Served
All others: Expert Review (Expert: Rolf Sonneveld, Andrew Findlay)
Protocol Mechanisms
RFC 4520
First Come First Served
resultCode values
RFC 4520
0-1023 Standards Action (can not start with e- or x-)
1024-4095 Expert Review with Specification Required (can not start with e- or x-)
4096-16383 First Come First Served (Shall start with e-)
16384 and higher Private Use (Shall start with x-) (Expert: Rolf Sonneveld, Andrew Findlay)
Link Management Protocol (LMP) Parameters
LMP Behavior Configuration Flags
RFC 6898
Standards Action
LMP Message Type Name Space
RFC 4204
0-127: Standards Action.
128-247: Expert Review.
(Expert: Dimitri Papadimitriou)
LMP Object Class name space and Class type (C-Type)
RFC 4204
0-127: Standards Action.
128-247: Expert Review.
(Expert: Dimitri Papadimitriou)
Link Relations
Link Relation Types
RFC 8288
Specification Required (Expert: Mark Nottingham, Julian Reschke, Jan Algermissen)
Link State Routing TE Capabilities
TE Node Capabilities
RFC 5073
IETF Review
Locally-Served DNS Zones
IPv4 Locally-Served DNS Zone Registry
RFC 6303
IETF Review
IPv6 Locally-Served DNS Zone Registry
RFC 6303
IETF Review
service.arpa Subdomain
RFC 9665
Standards Action or IESG Approval
Transport-Independent Locally-Served DNS Zone Registry
RFC 8375
IETF Review
Location-to-Service Translation (LoST) Location Profiles
LoST Location Profiles
RFC 5222
RFC 9036
Specification Required (Expert: Henning Schulzrinne)
Locator/ID Separation Protocol (LISP) Parameters
LISP ACT Values
RFC 9301
IETF Review or IESG Approval
LISP Address Type Codes (CLOSED)
RFC 6830
RFC 9301
LISP Algorithm ID Numbers
RFC 9301
First Come First Served
LISP Canonical Address Format (LCAF) Types
RFC 8060
Specification Required (Expert: Luigi Iannone, Albert Cabellos)
LISP Control Plane Header Bits: EID-Record
RFC 9301
Specification Required (Expert: Albert Cabellos, Dino Farinacci)
LISP Control Plane Header Bits: Encapsulated Control Message (ECM)
RFC 9301
Specification Required (Expert: Albert Cabellos, Dino Farinacci)
LISP Control Plane Header Bits: Map-Register
RFC 9301
Specification Required (Expert: Albert Cabellos, Dino Farinacci)
LISP Control Plane Header Bits: Map-Reply
RFC 9301
Specification Required (Expert: Albert Cabellos, Dino Farinacci)
LISP Control Plane Header Bits: Map-Request
RFC 9301
Specification Required (Expert: Albert Cabellos, Dino Farinacci)
LISP Control Plane Header Bits: Map-Request-Record
RFC 9437
Specification Required (Expert: Albert Cabellos, Dino Farinacci)
LISP Control Plane Header Bits: RLOC-Record
RFC 9301
Specification Required (Expert: Albert Cabellos, Dino Farinacci)
LISP Crypto Cipher Suite
RFC 8061
First Come First Served
LISP ECM Authentication Data Types
RFC 9303
Specification Required (Expert: Damien Saucez, Luigi Iannone)
LISP Map-Reply Authentication Data Types
RFC 9303
Specification Required (Expert: Damien Saucez, Luigi Iannone)
LISP Packet Types
RFC 9304
RFC 9301
Standards Action
LISP Shared Extension Message Type Sub-types
RFC 9304
0-1023: Standards Action.
1024-4095: First Come First Served.
LISP-GPE Next Protocol
RFC 9305
Specification Required (Expert: Darrel Lewis, Luigi Iannone)
LISP-SEC Authentication Data Key Derivation Function IDs
RFC 9303
Specification Required (Expert: Damien Saucez, Luigi Iannone)
LISP-SEC Authentication Data Key Wrap IDs
RFC 9303
Specification Required (Expert: Damien Saucez, Luigi Iannone)
LISP-SEC Preferred Authentication Data HMAC IDs
RFC 9303
Specification Required (Expert: Damien Saucez, Luigi Iannone)
Machine Names
Machine Names
Not defined
"Magic Numbers" for ISAKMP Protocol
IPSEC AH Transform Identifiers
RFC 2407
RFC 9395
Registry closed
IPSEC ESP Transform Identifiers
RFC 2407
RFC 9395
Registry closed
IPSEC Identification Type
RFC 2407
RFC 9395
Registry closed
IPSEC IPCOMP Transform Identifiers
RFC 2407
RFC 9395
Registry closed
IPSEC ISAKMP Transform Identifiers
RFC 2407
RFC 9395
Registry closed
IPSEC Labeled Domain Identifiers
RFC 2407
RFC 9395
Registry closed
IPSEC Notify Message Types
RFC 2407
RFC 9395
Registry closed
IPSEC Security Association Attributes
RFC 2407
RFC 9395
Registry closed
IPSEC Security Protocol Identifiers
RFC 2407
RFC 9395
Registry closed
IPSEC Situation Definition
RFC 2407
RFC 9395
Registry closed
Mail Parameters
Address Literal Tags
draft-ietf-emailcore-rfc5321bis-43
Encoding Header Field Keywords
RFC 1505
Specification Required (Expert: Unassigned)
Mail Header Confidentiality Policies
RFC 9788
Specification Required or IETF Review (see Note) (Expert: Unassigned)
Mail Transmission Types
RFC 821
RFC 822
RFC 5321
Standards Action or IESG-Approved Experimental RFC
Multicast Email SMTP Extensions
RFC 8494
Specification Required (Expert: Alexey Melnikov (primary), RFC Independent Submissions Editor (secondary))
Registered-states
RFC 6729
First Come First Served
SMTP PRIORITY extension Priority Assignment Policy
RFC 6710
Specification Required (Expert: Unassigned)
SMTP Server Limits
RFC 9422
Specification Required (Expert: John Klensin, Murray Kucherawy (backup))
SMTP Service Extensions
RFC 5321
Standards Action or IESG-Approved Experimental RFC
Manufacturer Usage Description (MUD)
MUD Extensions
RFC 8520
Standards Action
MUD Well-Known Uniform Resource Name (URN)
RFC 8520
Expert Review (Expert: Eliot Lear, Dan Romascanu)
Matroska
Matroska AES Cipher Modes
RFC 9559
First Come First Served
Matroska Alpha Modes
RFC 9559
First Come First Served
Matroska Chapter Codec IDs
RFC 9559
Specification Required (Expert: Dave Rice, Steve Lhomme)
Matroska Color Ranges
RFC 9559
Specification Required (Expert: Dave Rice, Steve Lhomme)
Matroska Compression Algorithms
RFC 9559
Specification Required (Expert: Dave Rice, Steve Lhomme)
Matroska Content Encoding Scopes
RFC 9559
Specification Required (Expert: Dave Rice, Steve Lhomme)
Matroska Content Encoding Types
RFC 9559
Specification Required (Expert: Dave Rice, Steve Lhomme)
Matroska Display Units
RFC 9559
Specification Required (Expert: Dave Rice, Steve Lhomme)
Matroska Element IDs
RFC 9559
0x80-0xFE: RFC Required.
0x407F-0x7FFE: Specification Required.
0x203FFF-0x3FFFFE: First Come First Served.
0x101FFFFF-0x1FFFFFFE: First Come First Served.
(Expert: Dave Rice, Steve Lhomme)
Matroska Encryption Algorithms
RFC 9559
First Come First Served
Matroska Horizontal Chroma Sitings
RFC 9559
First Come First Served
Matroska Projection Types
RFC 9559
First Come First Served
Matroska Stereo Modes
RFC 9559
Specification Required (Expert: Dave Rice, Steve Lhomme)
Matroska Tags Target Types
RFC 9559
Specification Required (Expert: Dave Rice, Steve Lhomme)
Matroska Track Plane Types
RFC 9559
First Come First Served
Matroska Track Types
RFC 9559
Specification Required (Expert: Dave Rice, Steve Lhomme)
Matroska Vertical Chroma Sitings
RFC 9559
First Come First Served
Maximally Redundant Tree (MRT) Parameters
MRT Profile Identifier Registry
RFC 7812
Standards Action
Media Control Channel Framework Parameters
Control Packages
RFC 6230
RFC Required
Header Fields
RFC 6230
RFC Required
IVR Prompt Variable Type for Control Packages
RFC 6231
RFC Required
MEDIACTRL Interactive Voice Response Control Package Status Codes
RFC 6623
Standards Action
Method Names
RFC 6230
RFC Required
Mixer Control Package Status Code Registration
RFC 6505
Standards Action
Status Codes
RFC 6230
RFC Required
Media Feature Tags - iso.org.dod.internet.features (1.3.6.1.8)
iso.org.dod.internet.features.global-tree (1.3.6.1.8.2)
RFC 2506
Expert Review (Expert: Paul Kyzivat)
iso.org.dod.internet.features.ietf-tree (1.3.6.1.8.1)
RFC 2506
RFC 2534
IETF Review
iso.org.dod.internet.features.sip-tree (1.3.6.1.8.4)
RFC 3840
IETF Review
iso.org.dod.internet.features.uri-tree (1.3.6.1.8.3)
RFC 2506
Unregistered (formed from uri)
Media Gateway Control Protocol (MGCP)
List of Extension Digit Map Letters
RFC 3660
Expert Review (Expert: Brian Rosen)
LocalConnectionOptions Sub-registry
RFC 3435
Expert Review (Expert: Brian Rosen)
MGCP Package Sub-Registry
RFC 3435
Expert Review (Expert: Brian Rosen)
Media Independent Handover (MIH)
MIH Table of Mappings From Service Field Values to Transport Protocols
RFC 5679
Standards Action
Media Resource Control Protocol Version 2 (MRCPv2) Parameters
Grammar Reference List Parameters
RFC 6787
Specification Required (Expert: Unassigned)
MRCPv2 Header Fields
RFC 6787
Standards Action
MRCPv2 Methods and Events
RFC 6787
Standards Action
MRCPv2 Resource Types
RFC 6787
Standards Action
MRCPv2 Status Codes
RFC 6787
Specification Required (Expert: Unassigned)
MRCPv2 Vendor-Specific Parameters
RFC 6787
First Come First Served
Megaco/H.248 Packages
Error Codes
RFC 5125
RFC 5615
Expert Review (Expert: Unassigned)
Private packages (0x8000 to 0xffff)
RFC 5125
RFC 5615
Expert Review (Expert: Unassigned)
Profile Names
RFC 5125
RFC 5615
Expert Review (Expert: Unassigned)
Public Packages (0x0001-0x7fff)
RFC 5125
Expert Review or IETF Review (Expert: Unassigned)
ServiceChange Reasons
RFC 5125
RFC 5615
Expert Review (Expert: Unassigned)
Message Disposition Notification (MDN) Parameters
MDN-Disposition-modifier-names
RFC 8098
Specification Required (Expert: Tony Hansen)
MDN-Disposition-notification-option-names
RFC 8098
Specification Required (Expert: Unassigned)
MDN-Extension-field-names
RFC 8098
Specification Required (Expert: Unassigned)
Message Headers
Content-Translation-Type Header Field Values
RFC 8255
Specification Required (Expert: Nik Tomkinson)
Permanent Message Header Field Names
RFC 3864
draft-ietf-emailcore-rfc5322bis-12
Expert Review (Expert: Mark Baker (primary), Murray Kucherawy (backup))
Provisional Message Header Field Names
RFC 3864
draft-ietf-emailcore-rfc5322bis-12
Expert Review (Expert: Mark Baker (primary), Murray Kucherawy (backup))
Message Session Relay Protocol (MSRP) Parameters
Header Fields
RFC 4975
RFC Required
Methods
RFC 4975
RFC Required
Status Codes
RFC 4975
RFC Required
Message Tracking Query Protocol (MTQP) Options Registry
MTQP Options
RFC 3887
Options whose names do not begin with "vnd.": Standards Action or IESG-approved experimental RFC.
Options with "vnd.": First Come First Served.
Messaging Abuse Reporting Format (MARF) Parameters
Feedback Report Header Fields
RFC 5965
Specification Required (Expert: Scott Kitterman, Murray Kucherawy)
Feedback Report Type Values
RFC 5965
Specification Required (Expert: Scott Kitterman, Murray Kucherawy)
Messaging Layer Security (MLS)
MLS Cipher Suites
RFC 9420
Specification Required (Expert: Sean Turner, Raphael Robert, Richard Barnes)
MLS Credential Types
RFC 9420
Specification Required (Expert: Sean Turner, Raphael Robert, Richard Barnes)
MLS Exporter Labels
RFC 9420
Specification Required (Expert: Sean Turner, Raphael Robert, Richard Barnes)
MLS Extension Types
RFC 9420
Specification Required (Expert: Sean Turner, Raphael Robert, Richard Barnes)
MLS Proposal Types
RFC 9420
Specification Required (Expert: Sean Turner, Raphael Robert, Richard Barnes)
MLS Public Key Encryption Labels
RFC 9420
Specification Required (Expert: Sean Turner, Raphael Robert, Richard Barnes)
MLS Signature Labels
RFC 9420
Specification Required (Expert: Sean Turner, Raphael Robert, Richard Barnes)
MLS Wire Formats
RFC 9420
Specification Required (Expert: Sean Turner, Raphael Robert, Richard Barnes)
Milnet Parameters
Milnet Link Numbers
Registry closed
Milnet Logical Addresses
Registry closed
Milnet X.25 Address Mappings
Registry closed
Mobile Ad hoc NETwork (MANET) Parameters
Address Block TLV Types
RFC 5444
RFC 7631
RFC 8245
0-127: Expert Review.
128-223: Expert Review.
224-255: Reserved for Experimental Use.
(Expert: Justin Dean, Christoper Dearlove (backup))
Cryptographic Functions
RFC 7182
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
Hash Functions
RFC 7182
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
HELLO Message-Type-specific Address Block TLV Types
RFC 6130
0-127: Reserved.
128-223: Expert Review.
224-255: Reserved.
(Expert: Justin Dean, Christoper Dearlove (backup))
HELLO Message-Type-specific Message TLV Types
RFC 6130
0-127: Reserved.
128-223: Expert Review.
224-255: Reserved.
(Expert: Justin Dean, Christoper Dearlove (backup))
ICV Address Block TLV Type Extensions
RFC 7182
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
ICV Message TLV Type Extensions
RFC 7182
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
ICV Packet TLV Type Extensions
RFC 7182
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
LINK_METRIC Address Block TLV Type Extensions
RFC 7181
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
LINK_STATUS TLV Values
RFC 7188
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
LOCAL_IF TLV Values
RFC 7188
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
Message TLV Types
RFC 5444
RFC 7631
RFC 8245
0-127: Expert Review.
128-223: Expert Review.
224-255: Reserved for Experimental Use.
(Expert: Justin Dean, Christoper Dearlove (backup))
Message Types
RFC 5444
RFC 8245
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
MPR TLV BIT Values
RFC 7188
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
NBR_ADDR_TYPE Address Block TLV Bit Values
RFC 7188
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
OTHER_NEIGHB TLV Values
RFC 7188
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
Packet TLV Types
RFC 5444
RFC 8245
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
SMF Relay Algorithm IDs
RFC 6621
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
SMF_NBR_TYPE Address Block TLV Type Extensions
RFC 6621
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
SMF_TYPE Message TLV Type Extensions
RFC 6621
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
TC Message-Type-specific Address Block TLV Types
RFC 7181
0-127: Reserved.
128-223: Expert Review.
224-255: Reserved.
(Expert: Justin Dean, Christoper Dearlove (backup))
TC Message-Type-specific Message TLV Types
RFC 7181
0-127: Reserved.
128-223: Expert Review.
224-255: Reserved.
(Expert: Justin Dean, Christoper Dearlove (backup))
TIMESTAMP Address Block TLV Type Extensions
RFC 7182
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
TIMESTAMP Message TLV Type Extensions
RFC 7182
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
TIMESTAMP Packet TLV Type Extensions
RFC 7182
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
Type 0 Address Block TLV Type Extensions
RFC 5497
RFC 7631
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
Type 0 Message TLV Type Extensions
RFC 5497
RFC 7631
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
Type 1 Address Block TLV Type Extensions
RFC 5497
RFC 7631
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
Type 1 Message TLV Type Extensions
RFC 5497
RFC 7631
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
Type 10 Address Block TLV Type Extensions
RFC 7181
RFC 7631
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
Type 2 Address Block TLV Type Extensions
RFC 6130
RFC 7631
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
Type 3 Address Block TLV Type Extensions
RFC 6130
RFC 7631
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
Type 4 Address Block TLV Type Extensions
RFC 6130
RFC 7631
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
Type 7 Message TLV Type Extensions
RFC 7181
RFC 7631
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
Type 8 Address Block TLV Type Extensions
RFC 7181
RFC 7631
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
Type 8 Message TLV Type Extensions
RFC 7181
RFC 7631
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
Type 9 Address Block TLV Type Extensions
RFC 7181
RFC 7631
Expert Review (Expert: Justin Dean, Christoper Dearlove (backup))
Mobile IPv4 Numbers
Access Technology Types
RFC 5563
Expert Review (Expert: Unassigned)
Code Values for General Notification Messages
RFC 6098
0: Expert Review.
1-63: Expert Review.
64-69: Expert Review.
70-127: Expert Review.
128-133: Expert Review.
134-191: Expert Review.
192-197: Expert Review.
198-255: Expert Review.
(Expert: Unassigned)
Code Values for Mobile IP Handoff Reply Messages (Value 17)
RFC 4881
IETF Review
Code Values for Mobile IP Registration Reply Messages
RFC 5944
RFC 6521
(Expert: Unassigned)
Dual Stack (DSMIPv4) Extension subtypes (Value 152)
RFC 5454
Expert Review (Expert: Unassigned)
Extension Subtypes
Extensions to Mobile IP Registration Messages
RFC 5944
RFC 6098
Specification Required (Expert: Unassigned)
Generalized Link Layer Address Registration Extension Subtypes and Generalized Link Layer Address Advertisement Extension Subtypes
RFC 4881
IETF Review
IPv6 Prefix Reply Extension Codes
RFC 5454
Expert Review (Expert: Unassigned)
Message String Extension (Value 145)
RFC 4917
Expert Review (Expert: Unassigned)
Mobile IP Extensions for ICMP Router Discovery messages
RFC 5944
Specification Required (Expert: Unassigned)
Mobile IP Message Types
RFC 5944
Specification Required (Expert: Unassigned)
Mobile Network Acknowledgement Extension
RFC 5177
Standards Action or IESG Approval
Mobile Router Route Optimization Capability Extension (Value 153)
RFC 6521
RFC Required
PMIPv4 Device ID Types
RFC 5563
Expert Review (Expert: Unassigned)
PMIPv4 Non-skippable Extension (Value 47)
RFC 5563
Expert Review (Expert: Unassigned)
PMIPv4 Per-Node Authentication Method Types
RFC 5563
Expert Review (Expert: Unassigned)
PMIPv4 Skippable Extension (Value 147)
RFC 5563
Expert Review (Expert: Unassigned)
PMIPv4 Subscriber ID Types
RFC 5563
Expert Review (Expert: Unassigned)
Replay Method Identifier
RFC 3957
Expert Review (Expert: Unassigned)
Route Optimization Data Extension (Value 50)
RFC 6521
RFC Required
Route Optimization Extension (Value 49)
RFC 6521
RFC Required
Security Parameter Index (SPI) Values for the Mobile IP Reserved SPIs
RFC 4721
Must be specified and approved by the MIP4 working group
Mobile IPv6
Access Network Information (ANI) Sub-Option Type Values
RFC 6757
Expert Review (Expert: Jouni Korhonen, Sri Gundavelli)
Access Technology Type Option Type Values
RFC 5213
Expert Review (Expert: Sri Gundavelli, Jouni Korhonen)
Binding Acknowledgment Flags
RFC 5213
Standards Action or IESG Approval
Binding Revocation Acknowledgement Status Codes
RFC 5846
Standards Action or IESG Approval
Binding Revocation Type
RFC 5846
Standards Action or IESG Approval
Binding Update Flags
RFC 5213
Standards Action or IESG Approval
DSMIP6-TLS Packet Types Registry
RFC 6618
RFC Required
Dual Stack MIPv6 (DSMIPv6) IPv4 Home Address Option Status Codes
RFC 5555
IETF Review
Enumerating Algorithms
RFC 4285
IETF Review
Flow Binding Acknowledgement Status Codes
RFC 7109
RFC Required
Flow Binding Action Values
RFC 7109
RFC Required
Flow Binding Indication Triggers
RFC 7109
RFC Required
Flow Binding Type
RFC 7109
RFC Required
Flow Identification Mobility Option Status Codes
RFC 6089
Standards Action or IESG Approval
Flow Identification Sub-Options
RFC 6089
Standards Action or IESG Approval
Handoff Indicator Option Type Values
RFC 5213
Expert Review (Expert: Sri Gundavelli, Jouni Korhonen)
Handover Acknowledge Flags
RFC 5949
Standards Action or IESG Approval
Handover Acknowledge Status Codes
RFC 5949
Standards Action or IESG Approval
Handover Initiate Flags
RFC 5949
Standards Action or IESG Approval
Handover Initiate Status Codes
RFC 5949
Standards Action or IESG Approval
IPv4 DHCP Support Mode Flags
RFC 5844
Expert Review (Expert: Sri Gundavelli, Jouni Korhonen)
IPv4 Home Address Reply Status Codes
RFC 5844
Expert Review (Expert: Sri Gundavelli, Jouni Korhonen)
LMA-Controlled MAG Parameters Sub-Option Type Values
RFC 8127
Expert Review (Expert: Dhananjay Patki, Lyle Bertz)
Mobile Node Group Identifier Type Registry
RFC 6602
Expert Review (Expert: Unassigned)
Mobile Node Identifier Option Subtypes
RFC 4283
Standards Action
Mobility Header Types - for the MH Type field in the Mobility Header
RFC 6275
Standards Action or IESG Approval
Mobility Options
RFC 6275
Standards Action or IESG Approval
Operator-Identifier Type Registry
RFC 6757
Expert Review (Expert: Unassigned)
Pseudo Home Address Acknowledgement Status Codes
RFC 5726
RFC Required
Quality-of-Service Attribute Registry
RFC 7222
Specification Required (Expert: Jouni Korhonen, Sri Gundavelli)
Revocation Trigger Values
RFC 5846
Standards Action or IESG Approval
Status Codes
RFC 6275
RFC 5213
Standards Action or IESG Approval
Status Codes (DNS Update Mobility Option)
RFC 5026
Standards Action or IESG Approval
Subtype Field of the MN-HA and MN-AAA Authentication Mobility Options
RFC 4285
IETF Review
Traffic Selector Format
RFC 6089
Standards Action or IESG Approval
Update Notification Acknowledgement Status Registry
RFC 7077
Specification Required (Expert: Sri Gundavelli, Marco Liebsch)
Update Notification Reasons Registry
RFC 7077
Specification Required (Expert: Sri Gundavelli, Marco Liebsch)
Multi-threaded Routing Toolkit (MRT)
Subtype Codes
RFC 6396
New Subtype Code definitions must reference an existing Type Code to
which the Subtype belongs. Subtype assignments follow the assignment
rules for the Type Codes to which they belong.
Type Codes
RFC 6396
65-511: IETF Review.
512-2047: Specification Required.
2048-64511: First Come First Served.
(Expert: Unassigned)
Multicast Acquisition
Multicast Acquisition Method Registry
RFC 6332
Specification Required (Expert: Unassigned)
Multicast Acquisition Report Block TLV Space Registry
RFC 6332
Specification Required (Expert: Unassigned)
Multicast Acquisition Status Code Space Registry
RFC 6332
Specification Required (Expert: Unassigned)
Multicast Address Dynamic Client Allocation Protocol (MADCAP) Parameters
MADCAP Error Codes
RFC 2730
IETF Review
MADCAP Feature Codes
RFC 2730
IETF Review
MADCAP Lease Identifier Types
RFC 2730
IETF Review
MADCAP Message Types
RFC 2730
IETF Review
MADCAP Options
RFC 2730
IETF Review
Multicast Address-Set Claim (MASC) Parameters
MASC Message Types
RFC 2909
IETF Review
MASC NOTIFICATION Message Error Codes and Subcodes
RFC 2909
IETF Review
MASC OPEN Message Optional Parameter Types
RFC 2909
IETF Review
MASC UPDATE Message Attribute Types
RFC 2909
IETF Review
MASC UPDATE Message Optional Parameter Types (128-255)
RFC 2909
IETF Review
Notification Error Subcodes
RFC 2909
IETF Review
Multicast Ping Protocol Parameters
Multicast Ping Protocol Message Types
RFC 6450
Specification Required (Expert: Unassigned)
Multicast Ping Protocol Option Types
RFC 6450
Specification Required (Expert: Unassigned)
Multicast Source Discovery Protocol (MSDP) TLV Values Registry
MSDP TLV Values
RFC 3618
1-200: Standards Action or IESG Approval.
201-255: Experimental Use.
Multimedia Internet KEYing (MIKEY) Payload Name Spaces
Cert Hash Payload Field Names
RFC 3830
RFC 6309
IETF Review or IESG Approval
Common Header Payload Field Names
RFC 3830
RFC 6309
IETF Review or IESG Approval
DH Data Payload Field Names
RFC 3830
RFC 6309
IETF Review or IESG Approval
ECC Curve
RFC 6267
Specification Required (Expert: Daniel Migault)
Envelope Data Payload Field Names
RFC 3830
RFC 6309
IETF Review or IESG Approval
Error Payload Name Spaces
RFC 3830
RFC 6309
IETF Review or IESG Approval
General Extensions Payload Field Names
RFC 3830
RFC 6309
IETF Review or IESG Approval
ID Payload and Certificate Field Names
RFC 3830
RFC 6309
IETF Review or IESG Approval
ID Role
RFC 6043
Specification Required (Expert: Daniel Migault)
ID Scheme
RFC 6509
Specification Required (Expert: Daniel Migault)
Key Data Payload Field Names
RFC 3830
RFC 6309
IETF Review or IESG Approval
Key Data Transport Payload Field Names
RFC 3830
RFC 6309
IETF Review or IESG Approval
MIKEY Security Protocol Parameters
RFC 3830
RFC 6309
IETF Review or IESG Approval
RAND Role
RFC 6043
Specification Required (Expert: Daniel Migault)
SAKKE params
RFC 6509
Specification Required (Expert: Daniel Migault)
Security Policy Payload Field Names
RFC 3830
RFC 6309
IETF Review or IESG Approval
Signature Payload Field Names
RFC 3830
RFC 6309
IETF Review or IESG Approval
SK sub-payload
RFC 6267
Specification Required (Expert: Daniel Migault)
Ticket Type
RFC 6043
Specification Required (Expert: Daniel Migault)
Timestamp Payload Field Names
RFC 3830
RFC 6309
IETF Review or IESG Approval
TS Role
RFC 6043
Specification Required (Expert: Daniel Migault)
Multiplexed Application Substrate over QUIC Encryption (MASQUE)
HTTP Capsule Types
RFC 9297
provisional: Expert Review.
Date field update for provisional registrations: First Come First Served.
permanent, 0x00-0x3f: Standards Action or IESG Approval.
permanent, greater than 0x3f: Specification Required.
first unassigned codepoint: Standards Action.
values 0x29 * N + 0x17 (for integer values of N): Reserved.
(Expert: Lucas Pardue, David Schinazi)
HTTP Capsule Types
RFC 9297
MASQUE URI Suffixes
RFC 9484
Expert Review (Expert: Tommy Pauly, Magnus Westerlund)
Multiprotocol Label Switching Architecture (MPLS)
Adjacency Type in the IGP-Adjacency Segment ID
RFC 8287
0-250: Standards Action.
251-254: Experimental Use.
Base Special-Purpose MPLS Label Values
RFC 3032
RFC 7274
RFC 9017
Standards Action
CC/CV MEP-ID TLV Registry
RFC 6428
RFC 7214
Standards Action
Downstream Detailed Mapping Address Type Registry
RFC 6426
RFC 7555
RFC 8029
Standards Action
DS Flags
RFC 8029
Standards Action
Extended Special-Purpose MPLS Label Values
RFC 7274
Standards Action
G-ACh Advertisement Protocol Application Registry
RFC 7212
RFC 7214
IETF Review
G-ACh Advertisement Protocol: Ethernet Interface Parameters
RFC 7213
RFC 7214
IETF Review or IESG Approval
G-ACh Advertisement Protocol: GAP TLV Objects (Application ID 0)
RFC 7212
RFC 7214
IETF Review
Global Flags
RFC 6425
Standards Action
Information Field and Protocol Identifier in the Q.2941 Generic Identifier
RFC 3033
0x10-0xFD: IETF Review.
Interface and Label Stack and Detailed Interface and Label Stack Address Types
RFC 8029
RFC 8611
1-250: Standards Action.
251-254: Experimental Use.
Interface Index Flags
RFC 8611
Standards Action
Loss/Delay Measurement Control Code: Query Codes
RFC 6374
RFC 7214
IETF Review
Loss/Delay Measurement Control Code: Response Codes
RFC 6374
RFC 7214
IETF Review
LSR Capability Flags
RFC 8611
Standards Action
Measurement Timestamp Type
RFC 6374
RFC 7214
IETF Review
Message Types
RFC 8029
RFC 9041
0-191: Standards Action.
192-247: RFC Required.
248-251: Experimental Use.
252-255: Private Use.
MPLS Fault OAM Flag Registry
RFC 6427
RFC 7214
Standards Action
MPLS Fault OAM Message Type Registry
RFC 6427
RFC 7214
Standards Action
MPLS Fault OAM TLV Registry
RFC 6427
RFC 7214
0-191: Standards Action.
192-247: Specification Required.
(Expert: Unassigned)
MPLS Generalized Associated Channel (G-ACh) Types (including Pseudowire Associated Channel Types)
RFC 4385
RFC 5586
RFC 7026
RFC 7214
IETF Review
MPLS Loss/Delay Measurement TLV Object
RFC 6374
RFC 7214
IETF Review
MPLS Multi-Topology Identifiers
RFC 7307
RFC 8320
Standards Action
MPLS OAM Function Flags
RFC 7759
Standards Action
MPLS PSC Capability Flag Registry
RFC 7271
Standards Action
MPLS PSC Request Registry
RFC 6378
RFC 7214
Standards Action
MPLS PSC TLV Registry
RFC 6378
RFC 7214
IETF Review
MPLS RPS Request Code Registry
RFC 8227
Specification Required (Expert: Weiqiang Cheng, Jie Dong)
MPLS RTM TLV Registry
RFC 8169
0-127: IETF Review.
128-191: First Come First Served.
MPLS-TP DHC TLVs
RFC 8185
IETF Review
Multipath Types
RFC 8029
0-250: Standards Action.
251-254: Experimental Use.
Standards Action
Network Action Flags Without Ancillary Data
draft-ietf-mpls-mna-hdr-21
0-14: IETF Review.
15-16: Experimental Use.
17-19: Private Use.
20-439: IETF Review.
Network Action Opcodes
draft-ietf-mpls-mna-hdr-21
1-110: IETF Review.
111-114: Experimental Use.
115-126: Private Use.
127: IETF Review.
Next Hop Address Type Registry
RFC 7555
Standards Action
Pad Types
RFC 8029
1-250: Standards Action.
251-254: Experimental Use.
Protocol in Label Stack Sub-TLV of Downstream Detailed Mapping TLV
RFC 8287
0-250: Standards Action.
251-254: Experimental Use.
Protocol in the Segment ID Sub-TLV
RFC 8287
0-250: Standards Action.
251-254: Experimental Use.
Proxy Flags
RFC 7555
Standards Action
Q.2957 User-to-user Signaling for the Internet Protocol
RFC 3033
0x03-0xFD: IETF Review.
Reply Modes
RFC 8029
RFC 9041
0-191: Standards Action.
192-247: RFC Required.
248-251: Experimental Use.
252-255: Private Use.
Reply Path Return Codes
RFC 7110
0x0000-0xFFFB: Standards Action.
0xFFFC-0xFFFF: Experimental Use.
Return Codes
RFC 8029
RFC 9041
0-191: Standards Action.
192-247: RFC Required.
248-251: Experimental Use.
252-255: Private Use.
Return Path Sub-TLV Types
RFC 9779
1-175: IETF Review.
176-239: First Come First Served.
240-251: Experimental Use.
252-254: Private Use.
Segment ID Sub-TLV Flags
RFC 9716
Standards Action
TLVs
RFC 8029
RFC 9041
0-16383: Standards Action.
16384-31739: RFC Required.
31740-31743: Experimental Use.
31744-32767: First Come First Served.
32768-49161: Standards Action.
49162-64507: RFC Required.
64508-64511: Experimental Use.
64512-65535: First Come First Served.
Multipurpose Internet Mail Extensions (MIME) and Media Types
Access Types
RFC 4289
RFC publication required
CMS Encapsulating Content Types
RFC 7193
Expert Review (Expert: Russ Housley, Sean Turner)
CMS Inner Content Types
RFC 7193
Expert Review (Expert: Russ Housley, Sean Turner)
Event Code Registry
RFC 4733
Specification Required (Expert: Unassigned)
Markdown Variants
RFC 7763
First Come First Served
Media Types
RFC 6838
RFC 4855
Expert Review for Vendor and Personal Trees. For Standards Tree, see
RFC 6838
, Section 3.1. (Expert: Alexey Melnikov, Darrel Miller, Murray Kucherawy (backup))
MIME to X.400 Table
RFC 1494
N/A
MIME to X.400 Table - Extended Body Part
RFC 1494
N/A
Parameter Values for the smime-type Parameter
RFC 7114
Specification Required (Expert: Russ Housley, Sean Turner (secondary))
Provisional Standard Media Type Registry
RFC 6838
FCFS (Organization subject to IESG Approval)
Report Types
RFC 8460
Specification Required (Expert: Murray Kucherawy)
Standards-related organizations that have registered Media Types in the Standards Tree
RFC 6838
IESG Approval
Structured Syntax Suffixes
RFC 6838
Expert Review (Expert: Alexey Melnikov, Darrel Miller)
Sub-Parameter Registry for application/aif+cbor and application/aif+json
RFC 9237
Specification Required (Expert: Göran Selander)
Sub-parameter Registry for application/mbox
RFC 4155
Specification Required (Expert: Unassigned)
Sub-Parameter Registry for audio/rtp-midi
RFC 6295
See sub-registries below
Sub-Parameter Registry for mode=rtp-midi of audio/mpeg4-generic
RFC 6295
See sub-registries below
Sub-Parameter Registry for video/raw
RFC 4175
See sub-registries below
Sub-Parameter Registry video/mpeg4-generic, audio/mpeg4-generic and application/mpeg4-generic
RFC 3640
Specification Required (Expert: Unassigned)
text/directory Parameters
RFC 2425
Two-week comment period, expert review (Expert: Rolf Sonneveld, Andrew Findlay)
text/directory Profiles
RFC 2425
Two-week comment period, expert review (Expert: Rolf Sonneveld, Andrew Findlay)
text/directory Types
RFC 2425
Two-week comment period, expert review (Expert: Rolf Sonneveld, Andrew Findlay)
Top-Level Media Types
RFC 9694
Standards Action
X.400 to MIME Table - Basic Body Parts
RFC 1494
N/A
Named Information
Named Information Hash Algorithm Registry
RFC 6920
Expert Review (Expert: James Manger)
Named Information URI Parameter Definitions
RFC 6920
Expert Review (Expert: James Manger)
Namespaces for IP over IEEE 1394
CSR Protocol Identifiers
RFC 2734
IANA allocation
MCAP (Multicast Channel Allocation Protocol) Parameters
RFC 2734
RFC 3146
Standards Action
Negative-ACKnowledgment (NACK) Oriented Reliable Multicast (NORM) Parameters
NORM Header Extension Types
RFC 5740
Specification Required (Expert: Unassigned)
NORM Stream Control Codes
RFC 5740
Specification Required (Expert: Unassigned)
NORM_CMD Message Sub-types
RFC 5740
Specification Required (Expert: Unassigned)
Netnews Parameters
Netnews Cancel-Lock Hash Algorithms
RFC 8315
First Come First Served
Network Configuration Protocol (NETCONF) Capability URNs
Capability URNs
RFC 6241
RFC 7803
IETF Review
Network File System version 4 (NFSv4)
NFSv4 ${ietf.org:CPU_ARCH} Values
RFC 8881
First Come First Served
NFSv4 ${ietf.org:OS_TYPE} Values
RFC 8881
First Come First Served
NFSv4 Device ID Notifications
RFC 8881
Standards Action with Expert Review (Expert: Unassigned)
NFSv4 Named Attribute Definitions
RFC 8881
RFC 7530
Specification Required for new registrations; updates to fields other
than the contact field require Expert Review or IESG Approval (Expert: Unassigned)
NFSv4 Path Variables
RFC 8881
ietf.org domain: Standards Action with Expert Review.
non-ietf.org. domain: First Come First Served.
(Expert: Unassigned)
NFSv4 Recallable Object Types
RFC 8881
Standards Action with Expert Review (Expert: Unassigned)
pNFS Layout Types
RFC 8881
Standards Action with Expert Review (Expert: Unassigned)
Network Layer Protocol Identifiers (NLPIDs) of Interest
NLPIDs of Interest
RFC 6328
IETF Review
Network News Transfer Protocol (NNTP) Parameters
NNTP Capability Labels
RFC 3977
Labels beginning with X are reserved for private use.
All others: Standards Track RFC or an IESG-approved experimental protocol.
NNTP Compression Algorithms
RFC 8054
First Come First Served
Network Service Header (NSH) Parameters
Flow ID Context Types
RFC 9263
IETF Review
Forwarding Context Types
RFC 9263
IETF Review
NSH Base Header Bits
RFC 8300
Standards Action
NSH IETF-Assigned Optional Variable-Length Metadata Types
RFC 8300
Standards Action
NSH MD Class
RFC 8300
0x0000-0x01FF: IETF Review.
0x0200-0xFFF5: Expert Review.
(Expert: Carlos Pignataro, Joel Halpern, Jim Guichard)
NSH MD Types
RFC 8300
IETF Review
NSH Next Protocol
RFC 8300
Expert Review (Expert: Carlos Pignataro, Joel Halpern, Jim Guichard)
NSH Version
RFC 8300
Standards Action
Network Time Protocol (NTP) Parameters
NTP Extension Field Types
RFC 5905
RFC 5906
RFC 9748
Specification Required (Expert: Kurt Kristof Teichel, Miroslav Lichvar, David Venhoek)
NTP Kiss-o'-Death Codes
RFC 5905
RFC 9748
Specification Required (Expert: Kurt Kristof Teichel, Miroslav Lichvar, David Venhoek)
NTP Reference Identifier Codes
RFC 5905
RFC 9748
Specification Required (Expert: Kurt Kristof Teichel, Miroslav Lichvar, David Venhoek)
Network Time Security (NTS)
Network Time Security Error Codes
RFC 8915
0-1023: IETF Review.
1024-32767: Specification Required.
32768-65535: Private or Experimental Use.
(Expert: Miroslav Lichvar, Daniel Franke)
Network Time Security Key Establishment Record Types
RFC 8915
0-1023: IETF Review.
1024-16383: Specification Required.
16384-32767: Private or Experimental Use.
(Expert: Miroslav Lichvar, Daniel Franke)
Network Time Security Next Protocols
RFC 8915
0-1023: IETF Review.
1024-32767: Specification Required.
32768-65535: Private or Experimental Use.
(Expert: Miroslav Lichvar, Daniel Franke)
Network Time Security Warning Codes
RFC 8915
0-1023: IETF Review.
1024-32767: Specification Required.
32768-65535: Private or Experimental Use.
(Expert: Miroslav Lichvar, Daniel Franke)
Network Virtualization Overlay (NVO3)
Geneve Option Class
RFC 8926
0x0000-0x00FF: IETF Review.
0x0100-0xFEFF: First Come First Served.
0xFF00-0xFFFF: Experimental Use.
Next Hop Resolution Protocol (NHRP) Types
NHRP Extension Types
RFC 2332
Expert Review (Expert: Jim Luciani)
NHRP Packet Types
RFC 2332
Expert Review (Expert: Jim Luciani)
Novell Service Advisor Protocol (SAP) Numbers - Novell Object Types
Novell Object Type
IANA does not assign
NSIS Signaling Layer Protocol (NSLP) Parameters
AUTH_ENT_ID (X-Type 1) SubType values
RFC 5981
Specification Required (Expert: Unassigned)
DEST_ADDR (X-Type 4) SubType values
RFC 5981
Specification Required (Expert: Unassigned)
END_TIME (X-Type 6) SubType values
RFC 5981
Specification Required (Expert: Unassigned)
Informational Error Codes
RFC 5974
0-63: IETF Review.
64-127: Specification Required.
(Expert: Unassigned)
NATFW NSLP Header Flags
RFC 5973
IETF Review
NATFW NSLP Message Types
RFC 5973
IETF Review
NATFW Response Codes
RFC 5973
IETF Review
NSLP Error Classes
RFC 5974
RFC 5973
IETF Review
NSLP Message Objects
RFC 5974
1-1023: IETF Review.
1024-1999: Specification Required.
(Expert: Unassigned)
Permanent Failure Codes
RFC 5974
0-63: IETF Review.
64-127: Specification Required.
(Expert: Unassigned)
Protocol Error Codes
RFC 5974
0-63: IETF Review.
64-127: Specification Required.
(Expert: Unassigned)
QoS Model Error Codes
RFC 5975
Specification Required (Expert: Unassigned)
QoS NSLP Binding Codes
RFC 5974
IETF Review
QoS NSLP Error Source Identifiers
RFC 5974
Specification Required (Expert: Unassigned)
QoS NSLP Message Types
RFC 5974
IETF Review
SESSION_AUTH X-Types
RFC 5981
Specification Required (Expert: Unassigned)
SOURCE_ADDR (X-Type 3) SubType values
RFC 5981
Specification Required (Expert: Unassigned)
START_TIME (X-Type 5) SubType values
RFC 5981
Specification Required (Expert: Unassigned)
Success Error Codes
RFC 5974
0-63: IETF Review.
64-127: Specification Required.
(Expert: Unassigned)
Transient Failure Codes
RFC 5974
0-63: IETF Review.
64-127: Specification Required.
(Expert: Unassigned)
OAuth Parameters
OAuth Access Token Types
RFC 6749
RFC 8414
Specification Required (Expert: Hannes Tschofenig, Mike Jones)
OAuth Authorization Endpoint Response Types
RFC 6749
Specification Required (Expert: Hannes Tschofenig, Mike Jones)
OAuth Authorization Server Metadata
RFC 8414
Specification Required (Expert: Mike Jones, Nat Sakimura, John Bradley, Dick Hardt)
OAuth Dynamic Client Registration Metadata
RFC 7591
Specification Required (Expert: Justin Richer)
OAuth Extensions Error Registry
RFC 6749
Specification Required (Expert: Hannes Tschofenig, Mike Jones)
OAuth Parameters
RFC 6749
Specification Required (Expert: Hannes Tschofenig, Mike Jones)
OAuth Protected Resource Metadata
RFC 9728
Specification Required (Expert: Michael Jones, Dick Hardt)
OAuth Token Endpoint Authentication Methods
RFC 7591
RFC 8414
Specification Required (Expert: Justin Richer)
OAuth Token Introspection Response
RFC 7662
Specification Required (Expert: Justin Richer)
OAuth Token Type Hints
RFC 7009
Specification Required (Expert: Torsten Lodderstedt, Mike Jones)
OAuth URI
RFC 6755
Specification Required (Expert: Hannes Tschofenig, Mike Jones)
PKCE Code Challenge Methods
RFC 7636
Specification Required (Expert: John Bradley, Mike Jones)
One Time Password (OTP) Parameters
Algorithm Identifier
RFC 2289
IESG Approval
Extension Set Identifiers
RFC 2243
IESG Approval
One-Way Active Measurement Protocol (OWAMP) Parameters
OWAMP-Control Command Numbers
RFC 7718
IETF Review
OWAMP-Modes
RFC 7718
IETF Review
Open Pluggable Edge Services (OPES)
OPES Callout Protocol (OCP) Core
RFC 4037
Expert Review for standards-track registration
Open Shortest Path First (OSPF)
Bandwidth Constraints Model Identifiers
RFC 4124
0-239: Specification Required.
240-255: Reserved for Private Use.
(Expert: Unassigned)
Open Shortest Path First (OSPF) Authentication Codes
Authentication Codes
RFC 2328
RFC 6549
IETF Review
Open Shortest Path First (OSPF) Link Local Signalling (LLS) - Type/Length/Value Identifiers (TLV)
Link Local Signalling TLV Identifiers (LLS Types)
RFC 5613
IETF Review
LLS Type 1 Extended Options and Flags
RFC 5613
Expert Review (Expert: Gunter Van De Velde, Peter Psenak)
Open Shortest Path First (OSPF) Multi-Topology Routing
Multi-Topology ID Values
RFC 4915
0-2: Reserved.
3-31: IETF Review.
32-127: Reserved.
128-255: Reserved.
Open Shortest Path First (OSPF) Opaque Link-State Advertisements (LSA) Option Types
Opaque Link-State Advertisements (LSA) Option Types
RFC 5250
0-127: IETF Review.
128-255: Private Use.
OSPFv2 TTZ LSA TLVs
RFC 8099
IETF Review
Open Shortest Path First (OSPF) Parameters
OSPF Dynamic Flooding LSA TLVs
draft-ietf-lsr-dynamic-flooding-18
IETF Review or IESG Approval
OSPF Flex-Algorithm Prefix Metric Bits
RFC 9350
IETF Review
OSPF Flexible Algorithm Definition TLV Sub-TLVs
RFC 9350
IETF Review or IESG Approval
OSPF Link Attributes Sub-TLV Bit Values
draft-ietf-lsr-dynamic-flooding-18
IETF Review or IESG Approval
OSPF Router Functional Capability Bits
RFC 7770
IETF Review
OSPF Router Information (RI) TLVs
RFC 7770
1-32767: IETF Review.
32768-32777: Experimentation.
32778-65535: Reserved.
OSPF Router Informational Capability Bits
RFC 7770
IETF Review
OSPF Tunnel Parameter Sub-TLVs
RFC 9013
1-34999: Standards Action.
35000-65499: First Come First Served.
Open Shortest Path First (OSPF) Signature Algorithms
Signature Algorithms
RFC 2154
IETF Review
Open Shortest Path First (OSPF) Traffic Engineering TLVs
RFC 4973 Experimental TE LSA Types
RFC 4973
IETF Review
RFC 4973 Experimental TE TLVs
RFC 4973
IETF Review
Top Level Types in TE LSAs
RFC 3630
Standards Action
Types for sub-TLVs of Optical Node Property (Value 6)
RFC 7688
Standards Action
Types for sub-TLVs of OTN-TDM SCSI (Switching Capability Specific Information)
RFC 7138
Standards Action
Types for sub-TLVs of Router Address TLV (Value 1)
RFC 6827
Standards Action
Types for sub-TLVs of TE Link TLV (Value 2)
RFC 3630
Standards Action
Types for sub-TLVs of TE Node Attribute TLV (Value 5)
RFC 5786
Standards Action
Types for sub-TLVs of WSON-LSC SCSI (Switching Capability Specific Information)
RFC 7688
Standards Action
Open Shortest Path First v2 (OSPFv2) Parameters
IP Algorithm Prefix Reachability Sub-TLV Flags
RFC 9502
IETF Review or IESG Approval
OSPF Packet Type (both v2 and v3)
RFC 2328
RFC 4940
1-127: Standards Action.
128-255: Reserved.
OSPFv2 Extended Inter-Area ASBR Sub-TLVs
RFC 9350
IETF Review or IESG Approval
OSPFv2 Extended Inter-Area ASBR TLVs
RFC 9350
IETF Review or IESG Approval
OSPFv2 Extended Link Opaque LSA TLVs
RFC 7684
IETF Review or IESG Approval
OSPFv2 Extended Link TLV Sub-TLVs
RFC 7684
RFC 9356
IETF Review or IESG Approval
OSPFv2 Extended Prefix Opaque LSA TLVs
RFC 7684
IETF Review or IESG Approval
OSPFv2 Extended Prefix TLV Flags
RFC 7684
IETF Review or IESG Approval
OSPFv2 Extended Prefix TLV Sub-TLVs
RFC 7684
IETF Review or IESG Approval
OSPFv2 Grace LSA Top Level TLV
RFC 4940
1-255: Standards Action.
256-65519: Reserved.
65520-65527: Experimentation.
65528-65535: Vendor Private Use.
OSPFv2 Instance IDs
RFC 6549
Standards Action
OSPFv2 Link State (LS) Type
RFC 2328
RFC 4940
1-127: Standards Action.
128-255: Reserved.
OSPFv2 Options Registry (8 bits)
RFC 4940
Standards Action
OSPFv2 Prefix Extended Flags
RFC 9792
IETF Review
OSPFv2 Router LSA Link Type (Value 1)
RFC 4940
1-127: Standards Action.
128-255: Reserved.
OSPFv2 Router Properties Registry
RFC 4940
Standards Action
Open Shortest Path First v3 (OSPFv3) Authentication Trailer Options
OSPFv3 Authentication Types
RFC 7166
Standards Action
Open Shortest Path First v3 (OSPFv3) Parameters
LD Options
RFC 5820
IETF Review
OSPFv3 Autoconfiguration (AC) LSA TLVs
RFC 7503
IETF Review or IESG Approval
OSPFv3 Extended-LSA Sub-TLVs
RFC 8362
RFC 9356
4-32767: IETF Review or IESG Approval.
33024-45055: First Come First Served.
OSPFv3 Extended-LSA TLVs
RFC 8362
9-32767: IETF Review or IESG Approval.
33024-45055: First Come First Served.
OSPFv3 Instance ID Address Family Values
RFC 5838
RFC 6969
Standards Action
OSPFv3 LSA Function Codes
RFC 7770
0-255: IETF Review.
256-8175: Reserved.
8176-8183: Experimentation.
8184-8190: Vendor Private Use.
8191: Reserved.
OSPFv3 Options (24 bits)
RFC 4940
Standards Action
OSPFv3 Prefix Extended Flags
RFC 9792
IETF Review
OSPFv3 Prefix Options (8 bits)
RFC 4940
Standards Action
OSPFv3 Router LSA Link Types
RFC 4940
0-127: Standards Action.
128-255: Reserved.
OSPFv3 Router Properties Registry
RFC 5340
Standards Action
OSPFv3 SRv6 Adjacency SID Sub-TLV Flags
RFC 9513
Standards Action
OSPFv3 SRv6 Capabilities TLV Flags
RFC 9513
Standards Action
OSPFv3 SRv6 End SID Sub-TLV Flags
RFC 9513
Standards Action
OSPFv3 SRv6 Locator LSA Sub-TLVs
RFC 9513
0-32767: IETF Review or IESG Approval.
33024-45055: First Come First Served.
OSPFv3 SRv6 Locator LSA TLVs
RFC 9513
0-32767: IETF Review or IESG Approval.
33024-45055: First Come First Served.
Open Systems Interconnection (OSI) Network Service Access Point Addresses (NSAPA) Internet Code Point Registry
OSI NSAPA Internet Code Points for AFI 35
RFC 4548
IETF Review
OpenPGP
OpenPGP AEAD Algorithms
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Armor Header Keys
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Armor Header Lines
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Compression Algorithms
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP ECC Curve OIDs and Usage
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP ECC Curve-Specific Wire Formats
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP ECDH KDF and KEK Parameters
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Elliptic Curve Point Wire Formats
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Elliptic Curve Scalar Encodings
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Encrypted Message Packet Versions
RFC 9580
RFC Required
OpenPGP Features Flags
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Hash Algorithm Identifiers for RSA Signatures' Use of EMSA-PKCS1-v1_5 Padding
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Hash Algorithms
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Image Attribute Encoding Format
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Image Attribute Versions
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Key and Signature Versions
RFC 9580
RFC Required
OpenPGP Key Flags
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Key IDs and Fingerprints
RFC 9580
RFC Required
OpenPGP Key Server Preference Flags
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP New Packet Versions (OBSOLETE)
RFC 9580
Registry closed
OpenPGP Packet Types
RFC 9580
RFC Required
OpenPGP Public Key Algorithms
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Reason for Revocation (Revocation Octet)
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Secret Key Encryption (S2K Usage Octet)
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Signature Notation Data Subpacket Notation Flags
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Signature Notation Data Subpacket Types
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Signature Subpacket Types
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Signature Types
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP String-to-Key (S2K) Types
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP Symmetric Key Algorithms
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
OpenPGP User Attribute Subpacket Types
RFC 9580
Specification Required (Expert: Daniel Kahn Gillmor, Andrew Gallagher, Heiko Schäfer)
Operating System Names
Operating System Names
RFC 952
First Come First Served
OS Specific Fact Names
RFC 3659
First Come First Served
OS Specific Filetypes
RFC 3659
First Come First Served
Optimized Link State Routing (OLSR) Protocol Message Types
OLSR Protocol Message Types
RFC 3626
1-127: Standards Action.
128-255: Private/Local Use.
Opus Channel Mapping Families
Opus Channel Mapping Families
RFC 7845
RFC 8486
Specification Required (Expert: Tim Terriberry, Ralph Giles)
OSPF Database Description (DD) Packet Flags
Database Description (DD) Packet Flags
RFC 5838
Standards Action
Packet CAPture (PCAP)
PCAP-Related LinkTypes
draft-ietf-opsawg-pcaplinktype-18
0-65000: Expert Review.
65001-65535: Experimental Use.
Packet Sampling (PSAMP) Parameters
PSAMP selectorAlgorithm Identifiers
RFC 5476
Expert Review (Expert: Unassigned)
PAL Package Types
PAL Package Types
RFC 8295
Expert Review (Expert: Sean Turner)
Path Computation Element Protocol (PCEP) Numbers
ASSOCIATION Flag Field
RFC 8697
RFC 9756
IETF Review
ASSOCIATION Type Field
RFC 8697
RFC 9756
IETF Review
AUTO-BANDWIDTH-ATTRIBUTES Sub-TLV Types
RFC 8733
0-65503: IETF Review.
65504-65535: Experimental Use.
AUTO-BANDWIDTH-CAPABILITY TLV Flag Field
RFC 8733
RFC 9756
IETF Review
Bidirectional LSP Association Group TLV Flag Field
RFC 9059
RFC 9756
IETF Review
BPI Object Error Code Field
RFC 9757
IETF Review
BPI Object Flag Field
RFC 9757
IETF Review
BPI Object Status Code Field
RFC 9757
IETF Review
BU Object Type Field
RFC 8233
RFC 9756
IETF Review
CCI Object Flag Field for MPLS Label
RFC 9050
RFC 9756
IETF Review
CCI Object Flag Field for Native IP
RFC 9757
IETF Review
CLOSE Object Flag Field
RFC 5440
IETF Review
CLOSE Object Reason Field
RFC 5440
IETF Review
DISJOINTNESS-CONFIGURATION TLV Flag Field
RFC 8800
RFC 9756
IETF Review
Domain-ID TLV Domain Type
RFC 8685
IETF Review
FLOWSPEC Object Flag Field
RFC 9168
RFC 9756
IETF Review
Generalized Endpoint Types
RFC 8779
RFC 9756
0-244: IETF Review.
245-255: Experimental Use.
GMPLS-CAPABILITY TLV Flag Field
RFC 8779
RFC 9756
IETF Review
H-PCE-CAPABILITY TLV Flag Field
RFC 8685
RFC 9756
IETF Review
H-PCE-FLAG TLV Flag Field
RFC 8685
RFC 9756
IETF Review
Inter-Layer Object Path Property Bits
RFC 8282
IETF Review
IRO Subobjects
RFC 5521
IETF Review
LOAD-BALANCING Object Flag Field
RFC 5440
IETF Review
LSP Exclusion Subobject Flag Field
RFC 9504
RFC 9756
IETF Review
LSP Object Flag Field
RFC 8231
RFC 9756
IETF Review
LSP-ERROR-CODE TLV Error Code Field
RFC 8231
RFC 9756
IETF Review
LSP-EXTENDED-FLAG TLV Flag Field
RFC 9357
RFC 9756
IETF Review
LSPA Object Flag Field
RFC 5440
IETF Review
METRIC Object Flag Field
RFC 5440
IETF Review
METRIC Object T Field
RFC 5440
IETF Review
MONITORING Object Flag Field
RFC 5886
IETF Review
NO-PATH Object Flag Field
RFC 5440
IETF Review
NO-PATH Object NI Field
RFC 5440
IETF Review
NO-PATH-VECTOR TLV Flag Field
RFC 5440
IETF Review
Notification Object
RFC 5440
IETF Review
Notification Object Flag Field
RFC 5440
IETF Review
Objective Function
RFC 5541
1-1023: IETF Review.
1024-32767: First Come First Served.
32768-65535: Reserved for Private Use.
Open Object Flag Field
RFC 5440
IETF Review
OVERLOAD Object Flag field
RFC 5886
IETF Review
Path Protection Association Group TLV Flag Field
RFC 8745
RFC 9756
IETF Review
PATH-KEY Subobjects
RFC 5520
IETF Review
PATH-MODIFICATION TLV Flag Field
draft-ietf-pce-circuit-style-pcep-extensions-16
IETF Review
PATH-SETUP-TYPE-CAPABILITY Sub-TLV Type Indicators
RFC 8664
RFC 9756
IETF Review
PCECC-CAPABILITY sub-TLV
RFC 9050
RFC 9756
IETF Review
PCEP Flow Specification TLV Type Indicators
RFC 9168
0-255: Reserved.
256-64506: Specification Required.
64507-65531: First Come First Served.
65532-65535: Experimental Use.
PCEP Message Common Header Flag Field
RFC 5440
IETF Review
PCEP Messages
RFC 5440
0-251: IETF Review.
252-255: Experimental Use.
PCEP Objects
RFC 5440
0-247: IETF Review.
248-255: Experimental Use.
PCEP Path Setup Types
RFC 8408
IETF Review
PCEP SR-ERO NAI Types
RFC 8664
IETF Review
PCEP SRv6-ERO NAI Types
RFC 9603
IETF Review
PCEP TLV Type Indicators
RFC 5440
0-65503: IETF Review.
65504-65535: Experimental Use.
PCEP-ERROR Object Error Types and Values
RFC 5440
RFC 9756
0-251: IETF Review.
252-255: Experimental Use.
PCEP-ERROR Object Flag Field
RFC 5440
IETF Review
PROC-TIME Object Flag Field
RFC 5886
IETF Review
RP Object Flag Field
RFC 5440
IETF Review
S2LS Object Flag Field
RFC 8623
RFC 9756
IETF Review
SCHED-PD-LSP-ATTRIBUTE TLV Opt Field
RFC 8934
RFC 9756
IETF Review
Schedule TLVs Flag Field
RFC 8934
RFC 9756
IETF Review
SR Capability Flag Field
RFC 8664
RFC 9756
IETF Review
SR Policy Capability TLV Flag Field
RFC 9862
IETF Review
SR Policy Invalidation Configuration Flags
RFC 9862
IETF Review
SR Policy Invalidation Operational Flags
RFC 9862
IETF Review
SR-ERO Flag Field
RFC 8664
RFC 9756
IETF Review
SRP Object Flag Field
RFC 8281
RFC 8786
RFC 9756
IETF Review
SRv6 Capability Flag Field
RFC 9603
RFC 9756
IETF Review
SRv6-ERO Flag Field
RFC 9603
RFC 9756
IETF Review
STATEFUL-PCE-CAPABILITY TLV Flag Field
RFC 8231
RFC 9756
IETF Review
SVEC Object Flag Field
RFC 5440
IETF Review
TE-PATH-BINDING TLV BT Field
RFC 9604
RFC 9756
IETF Review
TE-PATH-BINDING TLV Flag Field
RFC 9604
RFC 9756
IETF Review
WA Object Flag Field
RFC 8780
RFC 9756
IETF Review
Wavelength Allocation TLV Flag Field
RFC 8780
RFC 9756
IETF Review
Wavelength Restriction TLV Action Values
RFC 8780
RFC 9756
IETF Review
XRO Flag Field
RFC 5521
IETF Review
XRO Subobjects
RFC 5521
IETF Review
Peer-to-Peer Streaming Peer Protocol (PPSPP)
PPSP Peer Protocol Chunk Addressing Method Registry
RFC 7574
IETF Review
PPSP Peer Protocol Content Integrity Protection Method Registry
RFC 7574
IETF Review
PPSP Peer Protocol Merkle Hash Tree Function Registry
RFC 7574
IETF Review
PPSP Peer Protocol Message Type Registry
RFC 7574
IETF Review
PPSP Peer Protocol Option Registry
RFC 7574
IETF Review
PPSP Peer Protocol Version Number Registry
RFC 7574
IETF Review
Peer-to-Peer Streaming Tracker Protocol (PPSTP)
PPSTP Error Code Registry
RFC 7846
IETF Review
PPSTP Request Type Registry
RFC 7846
IETF Review
PPSTP Version Number Registry
RFC 7846
IETF Review
Per Hop Behavior Identification Codes
Per Hop Behavior Identification Codes
RFC 3140
Expert or area director review (Expert: Primary: Brian Carpenter; Secondary: David Black)
Performance Metrics
Performance Metric Name Elements - Method
RFC 8911
Specification Required (Expert: Greg Mirsky, Michael Scharf)
Performance Metric Name Elements - Metric Type
RFC 8911
Specification Required (Expert: Greg Mirsky, Michael Scharf)
Performance Metric Name Elements - Output
RFC 8911
Specification Required (Expert: Greg Mirsky, Michael Scharf)
Performance Metric Name Elements - Spec
RFC 8911
Specification Required (Expert: Greg Mirsky, Michael Scharf)
Performance Metric Name Elements - SubTypeMethod
RFC 8911
Specification Required (Expert: Greg Mirsky, Michael Scharf)
Performance Metric Name Elements - Units
RFC 8911
Specification Required (Expert: Greg Mirsky, Michael Scharf)
Performance Metrics Registry
RFC 8911
Specification Required (Expert: Greg Mirsky, Michael Scharf)
Permanent IPv6 Multicast Group Identifiers
Group Identifier Values
RFC 3307
Expert Review (Expert: Stig Venaas)
Point-to-Point (PPP) Protocol Field Assignments
IP Header Compression Configuration Option Suboption Types
RFC 3544
Standards Action
IP-Compression-Protocol Types
RFC 1332
IETF Review
IPv6-Compression-Protocol Types
RFC 5172
IETF Review
NetBIOS Frames Control Protocol (NBFCP) Configuration Options
RFC 2097
Expert Review (Expert: James Carlson)
PPP (IPXCP) Configuration Options
RFC 1552
Expert Review (Expert: James Carlson)
PPP ATCP Configuration Option Types
RFC 1378
Expert Review (Expert: James Carlson)
PPP Authentication Algorithms
RFC 1994
Expert Review (Expert: James Carlson)
PPP Banyan Vines Configuration Option Types
RFC 1763
Expert Review (Expert: James Carlson)
PPP Bridging Configuration Option Types
RFC 3518
RFC 3818
IETF Review
PPP Bridging MAC Types
RFC 3518
RFC 3818
IETF Review
PPP Bridging Spanning Tree
RFC 3518
RFC 3818
IETF Review
PPP CCP Configuration Option Types
RFC 1962
RFC 3818
IETF Review
PPP DLL Protocol Numbers
RFC 1661
RFC 3818
0xxx-3xxx: IETF Review.
4xxx-7xxx: IETF Review.
8xxx-bxxx: IETF Review.
cxxx-fxxx: IETF Review.
PPP EAP Request/Response Types
RFC 3748
Expert Review
PPP ECP Configuration Option Types
RFC 1968
Expert Review (Expert: James Carlson)
PPP IPCP Configuration Option Types
RFC 1332
RFC 3818
IETF Review
PPP IPv6CP Configuration Options
RFC 5072
RFC 3818
IETF Review
PPP LCP Callback Operation Fields
RFC 1570
RFC 3818
IETF Review
PPP LCP Configuration Option Types
RFC 1661
RFC 3818
IETF Review
PPP LCP FCS-Alternatives
RFC 1570
RFC 3818
IETF Review
PPP Link Control Protocol (LCP) and Internet Protocol Control Protocol (IPCP) Codes
RFC 1661
RFC 3818
IETF Review
PPP Multilink Endpoint Discriminator Class
RFC 1990
RFC 3818
IETF Review
PPP OSINLCP Configuration Option Types
RFC 1377
Expert Review (Expert: James Carlson)
PPP Over Ethernet Versions
RFC 2516
RFC 8822
Specification Required (Expert: Donald Eastlake)
PPP SDCP Configuration Options
RFC 1963
Expert Review (Expert: James Carlson)
PPP TNCP Configuration Option Types
RFC 6361
IETF Review
PPP Vendor Specific OUI Options
RFC 5342
Registry closed by
RFC 5342
ROHC Configuration Option Suboption Identifier Values
RFC 3241
Point-to-Point Over Ethernet (PPPoE) Parameters
PPPoE Active Discovery Code fields (8-bit values)
RFC 4937
First Come First Served
PPPoE TAG Values (16-bit values)
RFC 4937
First Come First Served
Port Control Protocol (PCP) Parameters
PCP Opcodes
RFC 6887
0-31, 127: Standards Action.
32-63: Specification Required.
(Expert: Dan Wing, Stuart Cheshire)
PCP Options
RFC 6887
0-63, 127-191, 255: Standards Action.
64-95, 192-223: Specification Required.
(Expert: Dan Wing, Stuart Cheshire)
PCP Result Codes
RFC 6887
0-127, 255: Standards Action.
128-191: Specification Required.
(Expert: Dan Wing, Stuart Cheshire)
Portable Symmetric Key Container (PSKC)
Algorithm URI Registry and Related PSKC Profiles
RFC 6030
Specification Required (Expert: Unassigned)
Key Usage Registry
RFC 6030
Expert Review (Expert: Unassigned)
PSKC Version Registry
RFC 6030
Standards Action
Post Office Protocol version 3 (POP3) Extension Mechanism
POP3 Capabilities
RFC 2449
Standards Track or IESG-approved Experimental RFC
POP3 Response Codes
RFC 2449
RFC Specification Required
Post-Stack First Nibble
Post-Stack First Nibble
RFC 9790
Standards Action
Posture Attribute (PA) Protocol Compatible with Trusted Network Connect (TNC) Parameters
PA-TNC Attribute Types
RFC 5792
Specification Required (Expert: Steve Hanna, Jessica Fitzgerald-McKay, Charles Schmidt)
PA-TNC Error Codes
RFC 5792
Specification Required (Expert: Steve Hanna, Jessica Fitzgerald-McKay, Charles Schmidt)
PA-TNC Remediation Parameters Types
RFC 5792
Specification Required (Expert: Steve Hanna, Jessica Fitzgerald-McKay, Charles Schmidt)
Software Data Model Types
RFC 8412
Specification Required (Expert: David Waltermire, Jessica Fitzgerald-McKay)
Posture Broker (PB) Protocol Compatible with Trusted Network Connect (TNC) Parameters
PA Subtypes
RFC 5793
Specification Required (Expert: Steve Hanna, Jessica Fitzgerald-McKay, Charles Schmidt)
PB-TNC Error Codes
RFC 5793
Specification Required (Expert: Steve Hanna, Jessica Fitzgerald-McKay, Charles Schmidt)
PB-TNC Message Types
RFC 5793
Specification Required (Expert: Steve Hanna, Jessica Fitzgerald-McKay, Charles Schmidt)
PB-TNC Remediation Parameters Types
RFC 5793
Specification Required (Expert: Steve Hanna, Jessica Fitzgerald-McKay, Charles Schmidt)
Power State Sets
DMTF Power State Set
RFC 7326
Expert Review (Expert: Unassigned)
EMAN Power State Set
RFC 7326
Expert Review (Expert: Unassigned)
IEEE1621 Power State Set
RFC 7326
Expert Review (Expert: Unassigned)
PRECIS Derived Property Value
PRECIS Derived Property Value
RFC 8264
RFC 5892
Expert Review (Expert: Patrik Fältström)
Preparation and Comparison of Internationalized Strings (PRECIS) Parameters
PRECIS Base Classes
RFC 8264
RFC Required
PRECIS Profiles
RFC 8264
Expert Review (Expert: Peter Saint-Andre (primary), Pete Resnick (secondary), Andrew Sullivan (backup))
Presence SRV Protocol Label Registry
Presence SRV Protocol Labels
RFC 3861
Specification Required (Expert: Unassigned)
Printer MIB Interpreters Language Families - OBSOLETE
Printer MIB Interpreters Language Families - OBSOLETE
RFC 3805
Expert Review (Expert: Ira McDonald, Michael Sweet)
Privacy Enhanced RTP Conferencing (PERC)
Datagram Transport Layer Security (DTLS) Tunnel Protocol Message Types for Privacy Enhanced Conferencing
RFC 9185
IETF Review
Privacy Pass
Privacy Pass Token Types
RFC 9577
Specification Required (Expert: Tommy Pauly, Chris Wood)
Probabilistic Routing Protocol using History of Encounters and Transitivity (PRoPHET)
Bundle Offer and Response B Flags
RFC 6693
Specification Required (Expert: Unassigned)
Bundle Offer and Response TLV Flags
RFC 6693
Specification Required (Expert: Unassigned)
DTN Routing Protocol Number
RFC 6693
Specification Required (Expert: Unassigned)
Error TLV Flags
RFC 6693
Specification Required (Expert: Unassigned)
Hello TLV Flags 0, 1, 2
RFC 6693
Specification Required (Expert: Unassigned)
Hello TLV Flags 3-7
RFC 6693
Specification Required (Expert: Unassigned)
PRoPHET Codes for Failure
RFC 6693
Specification Required (Expert: Unassigned)
PRoPHET Codes for Success
RFC 6693
Specification Required (Expert: Unassigned)
PRoPHET Header Flags
RFC 6693
Specification Required (Expert: Unassigned)
PRoPHET Protocol Version
RFC 6693
Specification Required (Expert: Unassigned)
PRoPHET Result Field
RFC 6693
Specification Required (Expert: Unassigned)
PRoPHET TLV Type
RFC 6693
Specification Required (Expert: Unassigned)
RIB Dictionary TLV Flags
RFC 6693
Specification Required (Expert: Unassigned)
RIB Flags
RFC 6693
Specification Required (Expert: Unassigned)
RIB TLV Flags
RFC 6693
Specification Required (Expert: Unassigned)
Profile URIs
Profile URIs
RFC 7284
First Come First Served (Specification Suggested)
Pronet 80 Type Numbers
Pronet 80 Type Numbers
IANA does not assign
Protocol for Carrying Authentication for Network Access (PANA) Parameters
AVP Codes
RFC 5191
RFC 6786
Expert Review with Specification Required, or Standards Action (Expert: Alper Yegin)
AVP Flags
RFC 5191
RFC 5872
Standards Action or IESG Approval
Message Flags
RFC 5191
RFC 5872
Standards Action or IESG Approval
Message Types
RFC 5191
RFC 5872
1-65519: IETF Review or IESG Approval.
65520-65535: IANA does not assign.
Protocol Independent Multicast (PIM) Parameters
PIM Address Encoding Types
RFC 5384
RFC 7761
RFC 7887
IETF Review
PIM Address Family
RFC 3973
RFC 7761
IESG Approval
PIM Designated Router Load-Balancing Hash Algorithms
RFC 8775
IETF Review
PIM Flooding Mechanism Message Types
RFC 8364
IETF Review
PIM Join Attribute Types
RFC 5384
IETF Review
PIM Join/Prune Transport Types
RFC 8059
IETF Review
PIM Message Types
RFC 9436
IETF Review
PIM-Hello Options
RFC 7761
RFC 3973
First Come First Served (expire in 1 year); Specification Required for Permanent assignments (Expert: Stig Venaas, Jeffrey (Zhaohui) Zhang)
PORT Message Types
RFC 6559
RFC Required
PORT Option Types
RFC 6559
RFC Required
Protocol Numbers
Assigned Internet Protocol Numbers
RFC 5237
RFC 7045
IESG Approval or Standards Action
Protocol to Access White-Space (PAWS)
PAWS Error Code Registry
RFC 7545
Specification Required (Expert: Unassigned)
PAWS Parameters Registry
RFC 7545
Specification Required (Expert: Unassigned)
PAWS Ruleset ID Registry
RFC 7545
Specification Required (Expert: Unassigned)
Provisioning Domains (PvDs)
Additional Information PvD Keys
RFC 8801
Expert Review (Expert: Tommy Pauly, David Schinazi)
PvD Option Flags
RFC 8801
Standards Action
PvD Split DNS Claims
RFC 9704
Expert Review (Expert: Tommy Pauly, Tirumaleswar Reddy.K, Benjamin M. Schwartz)
Proxy Certificate Policy Languages
Proxy Certificate Policy Languages
RFC 3820
IETF Standards Action
Pseudowire Name Spaces (PWE3)
Associated Channel Header TLV Registry (DELETED)
RFC 5586
RFC 7026
Attachment Group Identifier (AGI) Type Registry
RFC 4446
2-64: Expert Review.
65-127: IETF Review.
128-254: First Come First Served.
255: IETF Review.
(Expert: Stewart Bryant, Andrew Malis, Matthew Bocci)
Attachment Individual Identifier Type Registry
RFC 4446
2-64: Expert Review.
65-127: IETF Review.
128-254: First Come First Served.
255: IETF Review.
(Expert: Stewart Bryant, Andrew Malis, Matthew Bocci)
CC/CV MEP-ID TLV Registry
RFC 6428
RFC 7214
G-ACh Advertisement Protocol Application Registry
RFC 7212
RFC 7214
G-ACh Advertisement Protocol TLV Registry
RFC 7212
RFC 7214
G-ACh Advertisement Protocol: Ethernet Interface Parameters
RFC 7213
RFC 7214
Header Compression Over MPLS PW Control Word Packet Type
RFC 4901
Expert Review
ICC RG Parameter Types
RFC 7275
0x0000: IETF Review.
0x003B-0x1FFF: Expert Review.
0x2000-0x2FFF: IETF Review.
0x3000-0x3FFE: First Come First Served.
0x3FFF: IETF Review.
(Expert: Stewart Bryant, Matthew Bocci)
L2VPN PE Stack Capabilities
RFC 6575
IETF Review
MPLS Pseudowire Types Registry
RFC 4446
31-1024: Expert Review.
1025-4096: IETF Review.
4097-32766: First Come First Served.
32767: IETF Review.
(Expert: Stewart Bryant, Andrew Malis, Matthew Bocci)
MPLS VCCV Connectivity Verification (CV) Types
RFC 5085
IETF Review
MPLS VCCV Control Channel (CC) Types
RFC 5085
IETF Review
Pseudowire Associated Channel Types
RFC 4385
RFC 5586
RFC 7026
RFC 7214
Pseudowire Interface Parameters Sub-TLV type Registry
RFC 4446
2-64: Expert Review.
65-127: IETF Review.
128-254: First Come First Served.
255: IETF Review.
(Expert: Stewart Bryant, Andrew Malis, Matthew Bocci)
Pseudowire Status Codes Registry
RFC 4446
Expert Review (Expert: Stewart Bryant, Andrew Malis, Matthew Bocci)
Pseudowire Switching Point PE sub-TLV Type
RFC 6073
0: IETF Review.
1-64: Expert Review.
65-127: IETF Review.
128-254: First Come First Served.
255: IETF Review.
(Expert: Primary: Stewart Bryant; secondary: Matthew Bocci)
PSN Tunnel Sub-TLV Name Space
RFC 7965
IETF Review
PW Generic Protocol Flags
RFC 6478
IETF Review
PW Status Refresh Reduction Configuration Message Sub-TLVs
RFC 8237
0x00: IETF Review.
0x04-0x40: Expert Review.
0x41-0x7F: IETF Review.
0x80-0xFE: Expert Review.
0xFF: IETF Review.
(Expert: Stewart Bryant, Andrew Malis)
PW Status Refresh Reduction Control Messages
RFC 8237
0x00: IETF Review.
0x03-0x40: Expert Review.
0x41-0x7F: IETF Review.
0x80-0xFE: Expert Review.
0xFF: IETF Review.
(Expert: Stewart Bryant, Andrew Malis)
PW Status Refresh Reduction Message Flags
RFC 8237
IETF Review
PW Status Refresh Reduction Notification Codes
RFC 8237
0x00000000: IETF Review.
0x00000008-0x00010000: Expert Review.
0x00010001-0x08000000: IETF Review.
0x08000001-0xFFFFFFFE: Expert Review.
0xFFFFFFFF: IETF Review.
(Expert: Stewart Bryant, Andrew Malis)
VCCV Extended CV Types
RFC 7189
IETF Review
PT-EAP: Posture Transport (PT) Protocol For EAP Tunnel Methods
PT-EAP Versions
RFC 7171
Standards Action
Public Data Network Numbers
Public Data Network Numbers
RFC 1356
Registrations no longer accepted
Public Key Infrastructure using X.509 (PKIX) Parameters
Certification Authority Restriction Flags
RFC 8659
RFC Required
Certification Authority Restriction Properties
RFC 8659
Specification Required (Expert: Phillip Hallam-Baker)
PKIX SRV Protocol Labels
RFC 4386
Specification Required (Expert: Unassigned)
Public Notary Transparency
Error Types
RFC 9162
Specification Required (Expert: Unassigned)
Hash Algorithms
RFC 9162
0x00-0xDF: Specification Required.
0xE0-0xEF: Experimental Use.
0xF0-0xFF: Private Use.
(Expert: Unassigned)
Log Artifact Extensions
RFC 9162
0x0000-0xDFFF: Specification Required.
0xE000-0xEFFF: Experimental Use.
0xF000-0xFFFF: Private Use.
(Expert: Unassigned)
Log IDs
RFC 9162
First Come First Served
Signature Algorithms
RFC 9162
0x0000-0x0807: Specification Required.
0x0808-0xFDFF: Expert Review.
0xFE00-0xFEFF: Experimental Use.
0xFF00-0xFFFF: Private Use.
(Expert: Unassigned)
VersionedTransTypes
RFC 9162
0x0100-0xDFFF: Specification Required.
0xE000-0xEFFF: Experimental Use.
0xF000-0xFFFF: Private Use.
(Expert: Unassigned)
QoS NSIS Signal Layering Protocol (NSLP) QSPEC Parameters
Excess Treatment Parameter
RFC 5975
Specification Required (Expert: Unassigned)
Extent of Restoration Field
RFC 5976
Specification Required (Expert: Unassigned)
Object Types
RFC 5975
Specification Required (Expert: Unassigned)
Parameter ID
RFC 5975
Specification Required (Expert: Unassigned)
QSPEC Procedure
RFC 5975
Specification Required (Expert: Unassigned)
QSPEC Type
RFC 5975
Specification Required (Expert: Unassigned)
QSPEC Version
RFC 5975
Specification Required (Expert: Unassigned)
Restoration Priority Field
RFC 5976
Specification Required (Expert: Unassigned)
Time to Restore Field
RFC 5976
Specification Required (Expert: Unassigned)
Y.1541 QoS Class Parameter
RFC 5975
Specification Required (Expert: Unassigned)
Y.2171 Admission Priority Parameter
RFC 5975
Specification Required (Expert: Unassigned)
QUIC
QUIC Frame Types
RFC 9000
provisional: Expert Review.
provisional registration Date field update: First Come First Served.
permanent, 0x00-0x3f: Standards Action or IESG Approval.
permanent, greater than 0x3f: Specification Required.
first unassigned codepoint: Standards Action.
(Expert: Jana Iyengar, Ian Swett, Martin Thomson)
QUIC Transport Error Codes
RFC 9000
provisional: Expert Review.
provisional registration Date field update: First Come First Served.
permanent, 0x00-0x3f: Standards Action or IESG Approval.
permanent, greater than 0x3f: Specification Required.
first unassigned codepoint: Standards Action.
(Expert: Jana Iyengar, Ian Swett, Martin Thomson)
QUIC Transport Parameters
RFC 9000
provisional: Expert Review.
provisional registration Date field update: First Come First Served.
permanent, 0x00-0x3f: Standards Action or IESG Approval.
permanent, greater than 0x3f: Specification Required.
first unassigned codepoint: Standards Action.
values 31 * N + 27 (for integer values of N): Reserved.
(Expert: Jana Iyengar, Ian Swett, Martin Thomson)
QUIC Versions
RFC 9000
provisional: Expert Review.
provisional registration Date field update: First Come First Served.
permanent: Specification Required.
first unassigned codepoint: Standards Action.
value 0x?a?a?a?a: Reserved.
(Expert: Jana Iyengar, Ian Swett, Martin Thomson)
Radius Types
Code Values for RADIUS Attribute 241.1, Frag-Status
RFC 7499
RFC Required
Data Type
RFC 8044
Standards Action
Entity Types (Attribute 127, Location-Information)
RFC 5580
Expert Review (Expert: Alan DeKok, Mohit Sethi)
Location Profiles (Attribute 127, Location-Information)
RFC 5580
Expert Review (Expert: Alan DeKok, Mohit Sethi)
Location-Capable Attribute (Attribute 131)
RFC 5580
Expert Review (Expert: Alan DeKok, Mohit Sethi)
Operator Namespace Identifier for Attribute 126
RFC 5580
Expert Review (Expert: Alan DeKok, Mohit Sethi)
Option Codes Permitted in the Softwire46-Priority Attribute
RFC 8658
IETF Review
Privacy Flags (Attribute 129, Basic-Location-Policy-Rules)
RFC 5580
Expert Review (Expert: Alan DeKok, Mohit Sethi)
RADIUS Attribute Types
RFC 3575
RFC 6929
RFC 8044
1-191: IETF Review.
192-240: Reserved for Private Use.
224-240: Implementation Specific.
241-246 (extended space, Unassigned): IETF Review.
241-246 (extended space, Reserved): Standards Action.
247-255: Reserved.
RADIUS IP Port Configuration and Reporting TLVs
RFC 8045
Standards Action
RADIUS Packet Type Codes
RFC 3575
IESG Approval
RADIUS Softwire46 Configuration and Multicast Attributes
RFC 8658
Standards Action
Requested-Location-Info Attribute (Attribute 132)
RFC 5580
Expert Review (Expert: Alan DeKok, Mohit Sethi)
Values for RADIUS Attribute 10, Framed-Routing
RFC 2865
RFC 3575
Expert Review (Expert: Alan DeKok, Margaret Cullen)
Values for RADIUS Attribute 101, Error-Cause Attribute
RFC 3575
RFC 5176
RFC 7930
Expert Review (Expert: Alan DeKok, Margaret Cullen)
Values for RADIUS Attribute 13, Framed-Compression
RFC 2865
RFC 3575
Expert Review (Expert: Alan DeKok, Margaret Cullen)
Values for RADIUS Attribute 133, Framed-Management-Protocol Attribute
RFC 5607
Specification Required (Expert: Alan DeKok, Margaret Cullen)
Values for RADIUS Attribute 134, Management-Transport-Protection Attribute
RFC 5607
Specification Required (Expert: Alan DeKok, Margaret Cullen)
Values for RADIUS Attribute 15, Login-Service
RFC 2865
RFC 3575
Expert Review (Expert: Alan DeKok, Margaret Cullen)
Values for RADIUS Attribute 29, Termination-Action
RFC 2865
RFC 3575
Expert Review (Expert: Alan DeKok, Margaret Cullen)
Values for RADIUS Attribute 40, Acct-Status-Type
RFC 2866
RFC 3575
Expert Review (Expert: Alan DeKok, Margaret Cullen)
Values for RADIUS Attribute 45, Acct-Authentic
RFC 2866
RFC 3575
Expert Review (Expert: Alan DeKok, Margaret Cullen)
Values for RADIUS Attribute 49, Acct-Terminate-Cause
RFC 2866
RFC 3575
Expert Review (Expert: Alan DeKok, Margaret Cullen)
Values for RADIUS Attribute 6, Service-Type
RFC 2865
RFC 3575
IETF Review
Values for RADIUS Attribute 61, NAS-Port-Type
RFC 2865
RFC 3575
Expert Review (Expert: Alan DeKok, Margaret Cullen)
Values for RADIUS Attribute 64, Tunnel-Type
RFC 3575
Expert Review (Expert: Alan DeKok, Margaret Cullen)
Values for RADIUS Attribute 65, Tunnel-Medium-Type
RFC 3575
Expert Review (Expert: Alan DeKok, Margaret Cullen)
Values for RADIUS Attribute 7, Framed-Protocol
RFC 2865
RFC 3575
Expert Review (Expert: Alan DeKok, Margaret Cullen)
Values for RADIUS Attribute 72, ARAP-Zone-Access
RFC 2869
RFC 3575
Expert Review (Expert: Alan DeKok, Margaret Cullen)
Values for RADIUS Attribute 76, Prompt
RFC 2869
RFC 3575
Expert Review (Expert: Alan DeKok, Margaret Cullen)
Real Time Streaming Protocol (RTSP)/1.0 Parameters
RTSP/1.0 Headers
RFC 2326
Standards Document, preferably an IETF RFC
RTSP/1.0 Methods
RFC 2326
Standards Action
RTSP/1.0 Option Tags
RFC 2326
Specification Required (Expert: Unassigned)
RTSP/1.0 Status Codes
RFC 2326
Standards Action
Real-time Inter-network Defense (RID)
RID Enumeration List
RFC 6545
Expert Review (Expert: Unassigned)
XML Schemas Exchanged via RID
RFC 6545
Specification Required (Expert: Unassigned)
Real-Time Streaming Protocol (RTSP) 2.0 Parameters
Accept-Credentials Hash Algorithms
RFC 7826
Standards Action
Accept-Credentials Policies
RFC 7826
Standards Action
Cache-Control Cache Directive Extensions
RFC 7826
Standards Action or IESG Approval
Feature-tags
RFC 7826
First Come First Served
Media Properties
RFC 7826
Specification Required (Expert: Martin Stiemerling)
Notify-Reason Values
RFC 7826
Specification Required (Expert: Martin Stiemerling)
Range Header Formats
RFC 7826
Specification Required (Expert: Martin Stiemerling)
RSTP 2.0 Headers
RFC 7826
Expert Review (Expert: Martin Stiemerling)
RTP-Info Header Parameters
RFC 7826
Specification Required (Expert: Martin Stiemerling)
RTSP 2.0 Methods
RFC 7826
Standards Action
RTSP 2.0 Status Codes
RFC 7826
IETF Review
Seek-Style Policies
RFC 7826
Specification Required (Expert: Martin Stiemerling)
Terminate-Reason Header Parameters
RFC 7826
Specification Required (Expert: Martin Stiemerling)
Terminate-Reason Redirect Reasons
RFC 7826
Expert Review (Expert: Martin Stiemerling)
Transport Modes
RFC 7826
Standards Action
Transport Parameters
RFC 7826
Specification Required (Expert: Martin Stiemerling)
Transport Protocol Identifier
RFC 7826
Specification Required (Expert: Martin Stiemerling)
Real-Time Transport Protocol (RTP) Parameters
EKT Ciphers
RFC 8870
Specification Required (Expert: Unassigned)
EKT Message Types
RFC 8870
Specification Required (Expert: Unassigned)
FMT Values for PSFB Payload Types
RFC 4585
Specification Required (Expert: Magnus Westerlund)
FMT Values for RTPFB Payload Types
RFC 4585
Specification Required (Expert: Magnus Westerlund)
RAMS Response Code Space Registry
RFC 6285
1xx: Informational.
2xx: Success.
3xx: Redirection.
4xx: RTP Receiver (RTP_Rx) Error.
5xx: Burst/Retransmission Source (BRS) Error.
Specification Required (Expert: Unassigned)
RAMS TLV Space Registry
RFC 6285
Specification Required (Expert: Unassigned)
RTCP Control Packet Types (PT)
RFC 5761
RFC 3550
1-191: Specification Required or Expert Review.
194-199: Specification Required or Expert Review.
200-223: Specification Required or Expert Review.
224-254: Specification Required or Expert Review.
(Expert: Magnus Westerlund)
RTP Compact Header Extensions
RFC 8285
Expert Review (Expert: Magnus Westerlund)
RTP Payload Format Media Types
RFC 4855
RFC 9751
Registry closed
RTP Payload Types (PT) for standard audio and video encodings - Closed
RFC 3551
Registry closed; see
RFC 3551
, Section 3
RTP Profile Names
RFC 3550
Standards Action or Expert Review (Expert: Unassigned)
RTP SDES Compact Header Extensions
RFC 7941
Expert Review (Expert: Magnus Westerlund)
RTP SDES Item Types
RFC 3550
Specification Required or Expert Review (Expert: Magnus Westerlund)
SFMT Values for RAMS Messages
RFC 6285
Specification Required (Expert: Unassigned)
SMT Values for TOKEN Packet Type Registry
RFC 6284
IETF Review
Sub-Report Block Type (SRBT) Values for the RSI Packet
RFC 5760
Specification Required (Expert: Unassigned)
Realm Specific IP (RSIP) Parameters
RSIP Address Types
RFC 3103
0: Reserved.
1-240: Specification Required.
241-255: Private Use.
(Expert: Unassigned)
RSIP Error Codes
RFC 3103
Specification Required (Expert: Unassigned)
RSIP Local Flow Policies
RFC 3103
0: Reserved.
1-240: Specification Required.
241-255: Private Use.
(Expert: Unassigned)
RSIP Message Types
RFC 3103
0: Reserved.
1-240: Specification Required.
241-255: Private Use.
(Expert: Unassigned)
RSIP Methods
RFC 3103
0: Reserved.
1-240: Specification Required.
241-255: Private Use.
(Expert: Unassigned)
RSIP Parameters
RFC 3103
0: Reserved.
1-240: Specification Required.
241-255: Private Use.
(Expert: Unassigned)
RSIP Remote Flow Policies
RFC 3103
0: Reserved.
1-240: Specification Required.
241-255: Private Use.
(Expert: Unassigned)
RSIP Tunnel Types
RFC 3103
0: Reserved.
1-240: Specification Required.
241-255: Private Use.
(Expert: Unassigned)
RSIP Vendor IDs
RFC 3103
0: Reserved.
1-240: Specification Required.
241-255: Private Use.
(Expert: Unassigned)
Realtime Traffic Flow Measurement (RTFM)
Pattern Matching Engine (PME) Opcodes
RFC 2722
IETF Review
RTFM Attributes
RFC 2722
0-511: IETF Review.
512-1023: First Come First Served.
1024 and above: Reserved for Private Use.
Registrar IDs
Registrar IDs
Assigned by ICANN
Registration Data Access Protocol (RDAP)
Bootstrap Service Registry for AS Number Space
RFC 9224
Bootstrap Service Registry for Domain Name Space
RFC 9224
Bootstrap Service Registry for IPv4 Address Space
RFC 9224
Bootstrap Service Registry for IPv6 Address Space
RFC 9224
Bootstrap Service Registry for Provider Object Tags
RFC 8521
RDAP Extensions
RFC 7480
Specification Required (Expert: Jasdip Singh, Scott Hollenbeck)
RDAP JSON Values
RFC 9083
RFC 9537
Expert Review (Expert: Jasdip Singh, Scott Hollenbeck)
RDAP Provider Object Tags
RFC 8521
First Come First Served
RDAP Reverse Search
RFC 9536
Specification Required (Expert: Jasdip Singh, Scott Hollenbeck)
RDAP Reverse Search Mapping
RFC 9536
Specification Required (Expert: Jasdip Singh, Scott Hollenbeck)
Registration Data Access Protocol (RDAP) Query Purpose Values
RFC 9560
Specification Required (Expert: Scott Hollenbeck, Andrew Newton, Mario Loffredo, Pawel Kowalik, Jasdip Singh)
Registry for the Session Initiation Protocol (SIP) NAPTR Resource Record Services Field
SIP Table of Mappings From Service Field Values to Transport Protocols
RFC 3263
Standards Action
Relay User Equipment (RUE)
RUE Provider List
RFC 9248
Expert Review (Expert: Brian Rosen)
Reliable Multicast Transport (RMT) FEC Encoding IDs and FEC Instance IDs
FEC Framework (FECFRAME) FEC Encoding IDs
RFC 6363
IETF Review
ietf:rmt:fec:encoding - Fully-Specified FEC schemes (0-127)
RFC 5052
IETF Review
ietf:rmt:fec:encoding - Under-Specified FEC schemes (128-255)
RFC 5052
IETF Review
Reliable Server Pooling (RSerPool) Parameters
Aggregate Server Access Protocol (ASAP) Message Types
RFC 5352
Specification Required (Expert: Unassigned)
Endpoint Handlespace Redundancy Protocol (ENRP) Message Types
RFC 5353
Specification Required (Expert: Unassigned)
RSerPool Error Causes
RFC 5354
Specification Required (Expert: Unassigned)
RSerPool Parameter Types
RFC 5354
Specification Required (Expert: Unassigned)
RSerPool Policy Types
RFC 5356
Specification Required (Expert: Unassigned)
Update Action Types
RFC 5353
Specification Required (Expert: Unassigned)
Remote Attestation Procedures (RATS)
Entity Attestation Token (EAT) Intended Uses
RFC 9711
Expert Review (Expert: Giridhar Mandyam, Jeremy O'Donoghue)
RATS Conceptual Message Wrapper (CMW) Indicators
draft-ietf-rats-msg-wrap-22
IETF Review
Remote Direct Data Placement
RDMA-CM Private Data Identifiers
RFC 8797
Specification Required (Expert: Chuck Lever (primary), Tom Talpey (secondary))
Remote Direct Data Placement (RDDP)
DDP Errors
RFC 6580
Standards Action
MPA Errors
RFC 6580
Standards Action
RDMAP DDP Untagged Queue Numbers
RFC 7306
Standards Action
RDMAP Errors
RFC 6580
Standards Action
RDMAP Message Atomic Operation Subcodes
RFC 7306
Standards Action
RDMAP Message Operation Codes
RFC 6580
Standards Action
SCTP Function Codes for DDP Stream Session Control
RFC 6580
Standards Action
Remote Framebuffer (RFB)
Remote Framebuffer Client-to-Server Message Types
RFC 6143
Expert Review (Expert: Tristan Richardson)
Remote Framebuffer Encoding Types
RFC 6143
Expert Review (Expert: Tristan Richardson, John Levine)
Remote Framebuffer Security Types
RFC 6143
Expert Review (Expert: Tristan Richardson)
Remote Framebuffer Server-to-Client Message Types
RFC 6143
Expert Review (Expert: Tristan Richardson)
Remote Procedure Call (RPC)
Network Identifier (r_netid)
RFC 7530
Informational RFC
ONC RPC Netids (First Come First Served)
RFC 5665
First Come First Served
ONC RPC Netids (Standards Action)
RFC 5665
Standards Action
ONC RPC Uaddr Format Registry
RFC 5665
First Come First Served or Standards Action
Protocol family (r_nc_protofmly)
RFC 1833
Standards Action
Protocol name (r_nc_proto)
RFC 1833
Standards Action
RPC Authentication Flavor Numbers
RFC 5531
First Come First Served
RPC Authentication Status Numbers
RFC 5531
First Come First Served
RPCSEC_GSS Structured Privilege Names Registry
RFC 7861
Standards Action
Transport semantics (r_nc_semantics)
RFC 1833
Standards Action
Remote Procedure Call (RPC) Program Numbers
RPC Program Numbers
RFC 5531
Up to 100 numbers: First Come First Served.
101-1000 numbers: Specification Required.
More than 1000 numbers: IESG Approval.
(Expert: Unassigned)
Reputation Parameters
Reputation Applications
RFC 7071
IETF Review or Specification Required (Expert: Unassigned)
Reserved IPv6 Interface Identifiers
Reserved IPv6 Interface Identifiers
RFC 5453
RFC 7136
Standards Action
REsource LOcation And Discovery (RELOAD)
CoAP Usage for RELOAD Access Control Policy
RFC 7650
Specification Required (Expert: Unassigned)
RELOAD Access Control Policies
RFC 6940
Standards Action
RELOAD Application-ID
RFC 6940
1-32767: Standards Action.
32768-61440: Expert Review.
(Expert: Marc Petit-Huguenin (primary), Cullen Jennings (secondary))
RELOAD Data Kind-ID
RFC 6940
0x00000001-0x7fffffff: Standards Action.
0x8000000-0xf0000000: Expert Review.
(Expert: Marc Petit-Huguenin (primary), Cullen Jennings (secondary))
RELOAD Data Model
RFC 6940
Standards Action
RELOAD Diagnostic Kind ID
RFC 7851
Standards Action
RELOAD Diagnostics Flag
RFC 7851
Standards Action
RELOAD Error Codes
RFC 6940
Standards Action
RELOAD Extensions Registry
RFC 6940
Specification Required (Expert: Marc Petit-Huguenin (primary), Cullen Jennings (secondary))
RELOAD Forwarding Option Registry
RFC 6940
01-127: Standards Action.
128-254: Specification Required.
(Expert: Marc Petit-Huguenin (primary), Cullen Jennings (secondary))
RELOAD Message Codes
RFC 6940
Standards Action
RELOAD Overlay Algorithm Types
RFC 6940
IETF Review
RELOAD Overlay Link Protocol Registry
RFC 6940
Standards Action
RELOAD Overlay Link Registry
RFC 6940
Standards Action
RELOAD Probe Information Type Registry
RFC 6940
Standards Action
RELOAD Services Registry
RFC 7374
Specification Required (Expert: Unassigned)
Resource Public Key Infrastructure (RPKI)
BGPsec Algorithm Suites
RFC 8608
Standards Action
BGPsec Capability
RFC 8205
Standards Action
BGPsec_Path Flags
RFC 8205
Standards Action
RPKI Repository Name Schemes
RFC 6481
IETF Review
RPKI Signed Objects
RFC 6488
Standards Action
rpki-rtr-afi
draft-ietf-sidrops-8210bis-10
Expert Review (Expert: Unassigned)
rpki-rtr-error
RFC 6810
Expert Review (Expert: Keyur Patel (Primary), John G. Scudder (Secondary))
rpki-rtr-pdu
RFC 6810
RFC Required (Standards Track or Experimental)
Resource Reservation Protocol (RSVP) Parameters
Call Attributes Flags
RFC 6001
RFC Required
Call Attributes TLV
RFC 6001
RFC Required
Capability Object values
RFC 5063
Standards Action
Class Names, Class Numbers, and Class Types
RFC 3936
0-119: Standards Action.
120-123: Expert Review.
124-127: Reserved for Private Use.
128-183: Standards Action.
184-187: Expert Review.
188-191: Reserved for Private Use.
192-247: Standards Action.
248-251: Expert Review.
252-255: Reserved for Private Use.
(Expert: Dimitri Papadimitriou)
CONDITIONS Object Flags
RFC 9705
IETF Review
Error Codes and Globally-Defined Error Value Sub-Codes
RFC 3936
0-239: Standards Action.
240-251: Expert Review.
252-255: Reserved for Private Use.
(Expert: Dimitri Papadimitriou)
Interface Id Error specification
Message Types
RFC 3936
0-239: Standards Action.
240-255: Expert Review.
(Expert: Dimitri Papadimitriou)
VCAT Elementary Signal Registry
RFC 6344
IETF Review
VCAT VCG Operation Actions
RFC 6344
IETF Review
Virtual Destination Ports
RFC 2207
0: Reserved.
1-10: Reserved.
11-8191: Not Defined.
8192-65535: Dynamic.
Resource Reservation Protocol-Traffic Engineering (RSVP-TE) Parameters
Attribute Flags
RFC 5420
RFC 7570
IETF Review
Attributes TLV Space
RFC 5420
RFC 7570
IETF Review
Record Route Object Sub-object Flags
RFC 3209
Standards Action
RTM_SET Object Sub-Object Types
RFC 8169
0-127: IETF Review.
128-191: First Come First Served.
Session Attribute Object Flags
RFC 4859
IETF Review
Sub-TLV Types for WSON Processing Hop Attribute TLV
RFC 7689
Standards Action or Specification Required (Expert: Unassigned)
Values for Wavelength Assignment Method field in WavelengthSelection Sub-TLV
RFC 7689
Standards Action or Specification Required (Expert: Unassigned)
Resource-Oriented Lightweight Information Exchange (ROLIE) URN Parameters
ROLIE Information Types
RFC 8322
Specification Required (Expert: David Waltermire, Stephen Banghart)
ROLIE URN Parameters
RFC 8322
Specification Required (Expert: David Waltermire, Stephen Banghart)
RESTCONF Capability URNs
RESTCONF Capability URNs
RFC 8040
IETF Review
RObust Header Compression (ROHC) Profile Identifiers
Profile Identifiers
RFC 5795
Specification Required (Expert: Unassigned)
RObust Header Compression (ROHC) Suboption Identifier Values
ROHC Configuration Option Suboption Identifier Values
RFC 3241
0-127: Standards Action.
128-254: Specification Required.
(Expert: Unassigned)
Roughtime
Roughtime Tags
draft-ietf-ntp-roughtime-19
Specification Required
Roughtime Versions
draft-ietf-ntp-roughtime-19
0x01-0x0x7fffffff: IETF Review.
0x80000000-0xbfffffff: Experimental Use.
0xc0000000-0xffffffff: Private Use.
Route Distinguisher Type Field
Route Distinguisher Type Field
RFC 4364
0-32767: First Come First Served.
32768-65535: IETF Review.
Routing in Fat Trees (RIFT)
RIFT Security Algorithms
RFC 9692
Specification Required (Expert: Tony Przygienda)
RIFT Well-Known Key Sub-Types
draft-ietf-rift-kv-tie-structure-and-processing-09
Expert Review (Expert: Unassigned)
RIFTCommonAddressFamilyType
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTCommonHierarchyIndications
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTCommonIEEE8021ASTimeStampType
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTCommonIPAddressType
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTCommonIPPrefixType
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTCommonIPv4PrefixType
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTCommonIPv6PrefixType
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTCommonKVTypes
RFC 9692
draft-ietf-rift-kv-tie-structure-and-processing-09
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTCommonPrefixSequenceType
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTCommonRouteType
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTCommonTieDirectionType
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTCommonTIETypeType
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingCommunity
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingKeyValueTIEElement
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingKeyValueTIEElementContent
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingLIEPacket
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingLinkCapabilities
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingLinkIDPair
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingNeighbor
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingNodeCapabilities
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingNodeFlags
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingNodeNeighborsTIEElement
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingNodeTIEElement
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingPacketContent
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingPacketHeader
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingPrefixAttributes
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingPrefixTIEElement
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingProtocolPacket
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingTIDEPacket
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingTIEElement
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingTIEHeader
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingTIEHeaderWithLifeTime
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingTIEID
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingTIEPacket
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTEncodingTIREPacket
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
RIFTVersions
RFC 9692
Minor change (per RFC9692, Section 7): Expert Review.
All other allocations: Specification Required.
(Expert: Tony Przygienda)
Routing Information Protocol (RIP) Parameters
RIP Address Family Identifiers
RFC 1058
Not defined
RIP Authentication Type
RFC 1388
Not defined
RIP Commands
RFC 1723
Not defined
RIP Update Headers
RFC 1058
Not Defined
RIPNG Commands
RFC 2080
Not defined
RIPNG Update Headers
RFC 2080
Not defined
Routing Protocol for Low Power and Lossy Networks (RPL)
Consistency Check (CC) Flags
RFC 6550
IETF Review
Destination Advertisement Object (DAO) Acknowledgment Flags
RFC 6550
IETF Review
Destination Advertisement Object (DAO) Flags
RFC 6550
IETF Review
Destination Cleanup Object (DCO) Flags
RFC 9009
IETF Review
Destination Cleanup Object Acknowledgment (DCO) Acknowledgment Flags
RFC 9009
IETF Review
DODAG Configuration Option Flags for MOP 0..6
RFC 6550
RFC 9008
IETF Review
DODAG Information Object (DIO) Flags
RFC 6550
IETF Review
DODAG Informational Solicitation (DIS) Flags
RFC 6550
IETF Review
Mode of Operation
RFC 6550
RFC 9008
IETF Review
Objective Code Point (OCP)
RFC 6550
IETF Review
PDR-ACK Acceptance Status Values
RFC 9914
Standards Action
PDR-ACK Rejection Status Values
RFC 9914
Standards Action
Per-KIM Security Levels
RFC 6550
IETF Review
Projected DAO Request (P-DAO-REQ) Flags
RFC 9914
Standards Action
Projected DAO Request Acknowledgment (PDR-ACK) Flags
RFC 9914
Standards Action
RPL Control Codes
RFC 6550
IETF Review
RPL Control Message Options
RFC 6550
IETF Review
RPL Non-Rejection Status
RFC 9010
IETF Review
RPL Option Flags
RFC 9914
Standards Action
RPL Rejection Status
RFC 9010
IETF Review
RPL Target Option Flags
RFC 6550
RFC 9010
IETF Review
Security Section Algorithm
RFC 6550
IETF Review
Security Section Flags
RFC 6550
IETF Review
Sibling Information Option (SIO) Flags
RFC 9914
Standards Action
Solicited Information Option Flags
RFC 6550
IETF Review
Transit Information Option Flags
RFC 6550
IETF Review
Via Information Options (VIO) Flags
RFC 9914
Standards Action
Routing Protocol for Low Power and Lossy Networks (RPL) Routing Metric/Constraint
Hop-Count Object Flag field
RFC 6551
IETF Review
Node Type Field
RFC 6551
IETF Review
NSA Object Flag field
RFC 6551
IETF Review
Routing Metric/Constraint Common Header A field
RFC 6551
IETF Review
Routing Metric/Constraint Common Header Flag field
RFC 6551
IETF Review
Routing Metric/Constraint TLVs
RFC 6551
First Come First Served
Routing Metric/Constraint Type
RFC 6551
IETF Review
RSVP-TE OAM Configuration Registry
BFD Configuration Sub-TLV Types
RFC 7487
IETF Review
Ethernet Sub-TLVs Sub-Registry
RFC 7369
IETF Review
MPLS OAM Configuration Sub-TLV Types
RFC 7487
IETF Review
OAM Function Flags Sub-Registry
RFC 7260
IETF Review
OAM Sub-TLVs
RFC 7260
0-31: IETF Review.
32-65533: IETF Review.
65534-65535: Reserved for Experimental Use.
OAM Types
RFC 7260
IETF Review
Performance Monitoring Sub-TLV Types
RFC 7487
IETF Review
RTP Control Protocol Extended Reports (RTCP XR) Block Type Registry
IDMS XR Block SPST Registry
RFC 7272
Specification Required (Expert: Unassigned)
RTCP XR Block Type
RFC 3611
Specification Required (Expert: Joerg Ott)
RTCP XR MOS Metric block - multimedia application Calculation Algorithm
RFC 7266
Specification Required (Expert: Unassigned)
RTCP XR PDV block - PDV type
RFC 6798
Specification Required (Expert: Unassigned)
RTP Control Protocol Extended Reports (RTCP XR) Session Description Protocol (SDP) Parameters Registry
RTCP XR SDP Parameters
RFC 3611
Specification Required (Expert: Joerg Ott)
Scalable Adaptive Multicast (SAM) Baseline
SAM ALM Algorithm IDs
RFC 7019
Expert Review (Expert: Marc Petit-Huguenin (primary), Thomas Schmidt, John Buford)
SAM ALM Error Codes
RFC 7019
Expert Review (Expert: Marc Petit-Huguenin (primary), Thomas Schmidt, John Buford)
SAM ALM Message Codes
RFC 7019
Expert Review (Expert: Marc Petit-Huguenin (primary), Thomas Schmidt, John Buford)
Secret Key Transaction Authentication for DNS (TSIG) Algorithm Names
TSIG Algorithm Names
RFC 8945
IETF Review
Secure Shell (SSH) Protocol Parameters
Authentication Method Names
RFC 4250
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
Channel Connection Failure Reason Codes and Descriptions
RFC 4250
RFC 9519
0x00000001-0xFDFFFFFF: Expert Review.
0xFE000000-0xFFFFFFFF: Reserved for Private Use.
(Expert: Peter Yee, Markus Stenberg)
Compression Algorithm Names
RFC 4250
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
Connection Protocol Channel Request Names
RFC 4250
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
Connection Protocol Channel Types
RFC 4250
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
Connection Protocol Global Request Names
RFC 4250
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
Connection Protocol Subsystem Names
RFC 4250
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
Disconnection Messages Reason Codes and Descriptions
RFC 4250
RFC 9519
0x00000001-0xFDFFFFFF: Expert Review.
0xFE000000-0xFFFFFFFF: Reserved for Private Use.
(Expert: Peter Yee, Markus Stenberg)
Encryption Algorithm Names
RFC 4250
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
Extended Channel Data Transfer data_type_code and Data
RFC 4250
RFC 9519
0x00000001-0xFDFFFFFF: Expert Review.
0xFE000000-0xFFFFFFFF: Reserved for Private Use.
(Expert: Peter Yee, Markus Stenberg)
Extension Names
RFC 8308
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
Key Exchange Method Names
RFC 4250
RFC 9142
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
MAC Algorithm Names
RFC 4250
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
Message Numbers
RFC 4250
Standards Action
Pseudo-Terminal Encoded Terminal Modes
RFC 4250
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
Public Key Algorithm Names
RFC 4250
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
Publickey Subsystem Attributes
RFC 4819
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
Publickey Subsystem Request Names
RFC 4819
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
Publickey Subsystem Response Names
RFC 4819
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
Publickey Subsystem Status Codes
RFC 4819
0-191: Standards Action.
192-255: Reserved for Private Use.
Service Names
RFC 4250
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
Signal Names
RFC 4250
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
SSH Agent Extension Request Names
draft-ietf-sshm-ssh-agent-16
Expert Review (Expert: Unassigned)
SSH Agent Key Constraint Extension Names
draft-ietf-sshm-ssh-agent-16
Expert Review (Expert: Unassigned)
SSH Agent Key Constraint Numbers
draft-ietf-sshm-ssh-agent-16
Expert Review (Expert: Unassigned)
SSH Agent Protocol Message Type Numbers
draft-ietf-sshm-ssh-agent-16
0-239: Expert Review.
240-255: Private Use.
(Expert: Unassigned)
SSH Agent Signature Flags
draft-ietf-sshm-ssh-agent-16
Expert Review (Expert: Unassigned)
SSH Public-Key File Header Tags
RFC 4716
RFC 9519
Expert Review (Expert: Peter Yee, Markus Stenberg)
Security Event Token (SET)
Security Event Token Error Codes
RFC 8935
Specification Required (Expert: Mike Jones, John Bradley)
Subject Identifier Formats
RFC 9493
Specification Required (Expert: Prachi Jain)
Security External Enumeration Registry
Security External Enumeration Registry
RFC 7495
Specification Required (Expert: Unassigned)
Security Label Format Selection
Security Label Format Selection Registry
RFC 7569
Specification Required (Expert: Unassigned)
Security Parameters Index (SPI) Parameters
Security Parameters Index (SPI)
RFC 1826
RFC 2402
RFC 2406
RFC 4302
RFC 4303
RFC Required
security.txt Fields
security.txt Fields
RFC 9116
Expert Review (Expert: Yakov Shafranovich, Edwin Foudil)
Segment Routing
Segment Types
RFC 9256
Specification Required (Expert: Ketan Talaulikar, Matthew Bocci)
SR Policy ENLP Values
RFC 9830
Standards Action
SR Policy Protocol-Origin
RFC 9857
1-250: Expert Review.
251-255: Private Use.
(Expert: Unassigned)
SRv6 Endpoint Behaviors
RFC 8986
0: Reserved.
1-32767: First Come First Served.
32768-34815: Private Use.
34816-65534: Reserved.
65535: Reserved.
Selective P-Multicast Service Interface (S-PMSI) Parameters
S-PMSI Join Message Type Field
RFC 6513
IETF Review
Semantic Definition Format (SDF)
SDF Feature Names
RFC 9880
Specification Required (Expert: Ari Keranen (primary), Michael Koster (backup))
SDF Quality Name Prefixes
RFC 9880
Expert Review (Expert: Ari Keranen (primary), Michael Koster (backup))
SDF Quality Names
RFC 9880
Specification Required (Expert: Ari Keranen (primary), Michael Koster (backup))
sdfType Values
RFC 9880
Specification Required (Expert: Ari Keranen (primary), Michael Koster (backup))
Sender Policy Framework (SPF) Parameters
Modifier Names
RFC 6652
Specification Required (Expert: Unassigned)
Sensor Measurement Lists (SenML)
Secondary Units
RFC 8798
Expert Review (Expert: Ari Keränen)
SenML Features
RFC 9100
Specification Required (Expert: Ari Keränen (primary), Carsten Bormann (secondary))
SenML Labels
RFC 8428
Expert Review (Expert: Ari Keränen)
SenML Units
RFC 8428
Expert Review (Expert: Ari Keränen)
Server Cache Synchronization Protocol (SCSP) Parameters
Protocol IDs
RFC 2334
RFC, product of standards body, or Expert Review
Service Function Chaining (SFC) Active Operations, Administration, and Maintenance (OAM)
SF Identifier Types
RFC 9516
0-191: IETF Review.
192-251: First Come First Served.
252-254: Private Use.
SFC Active OAM Message Types
RFC 9516
0-31: IETF Review.
32-62: First Come First Served.
SFC Active OAM TLV Types
RFC 9516
0-175: IETF Review.
176-239: First Come First Served.
240-251: Experimental Use.
252-254: Private Use.
SFC Echo Reply Modes
RFC 9516
0-175: IETF Review.
176-239: First Come First Served.
240-251: Experimental Use.
252-254: Private Use.
SFC Echo Request Flags
RFC 9516
Standards Action
SFC Echo Return Codes
RFC 9516
0-191: IETF Review.
192-251: First Come First Served.
252-254: Private Use.
SFC Echo Types
RFC 9516
0-175: IETF Review.
176-239: First Come First Served.
240-251: Experimental Use.
252-254: Private Use.
Service Function Chaining Service Function Types
Service Function Chaining Service Function Types
RFC 9015
1-31: Standards Action.
32-64495: First Come First Served.
64496-65534: Private Use.
Service Location Protocol (SLP) Remote Service Discovery
SLP Remote Service Discovery
RFC 3832
Expert Review (Expert: Unassigned)
Service Location Protocol Version 2 (SLPv2) Cryptographic BSD Codes
Cryptographic BSD Codes
RFC 2608
IETF Review
Service Location Protocol Version 2 (SLPv2) Registrations
Service Location Protocol, Version 2 (SLPv2) Templates
RFC 2609
Expert Review (Expert: Erik Guttman)
SLPv2 Extension IDs
RFC 2608
Expert Review (Expert: Erik Guttman)
Service Location Protocol, Version 2 (SLPv2) Error Numbers
Error Numbers
RFC 2608
Standards Action
Service Location Protocol, Version 2 (SLPv2) Function IDs
Function IDs
RFC 2608
IETF Review
Service Names and Transport Protocol Port Numbers
Service Name and Transport Protocol Port Number Registry
RFC 6335
(Expert: TCP/UDP: Joe Touch; Eliot Lear, Kumiko Ono, Wes Eddy, Brian Trammell,
Jana Iyengar, and Michael Scharf
SCTP: Michael Tuexen
DCCP: Eddie Kohler and Yoshifumi Nishida)
Session Description Protocol (SDP) Parameters
"ack" and "nack" Attribute Values
RFC 4585
RFC 8859
First Come First Served with a permanent, stable, and publically accessible document
addrtype
RFC 8866
RFC Required
association-usage Name Registry
RFC 8841
First Come First Served
attribute-name (formerly "att-field")
RFC 8866
RFC 8864
RFC 8859
Specification Required (Expert: Flemming Andreasen)
bwtype
RFC 8866
RFC 8859
Standards Action
Candidate Attribute Extensions
RFC 8839
Specification Required (Expert: Christer Holmberg)
Codec Control Messages
RFC 5104
RFC 8859
Specification Required (Expert: Stephan Wenger)
content SDP Parameters
RFC 4796
RFC 8859
Specification Required (Expert: Christer Holmberg)
"cs-correlation" Attribute Values
RFC 7195
RFC 8859
Specification Required (Expert: Bo Burman)
"depend" SDP Attribute Values
RFC 5583
RFC 8859
Specification Required (Expert: Stephan Wenger)
enckey
RFC 8866
REGISTRY OBSOLETED - No further registrations accepted
Key Methods
RFC 4568
Standards Action
media
RFC 8866
Standards Action
Media Clock Source Parameters
RFC 7273
RFC 8859
Specification Required (Expert: Magnus Westerlund)
Media Stream Transports
RFC 4568
Standards Action
Multiplexing Categories
RFC 8859
Standards Action
nettype
RFC 8866
RFC Required
proto
RFC 8866
RFC Required
QoS Mechanism Tokens
RFC 5432
RFC 8859
Specification Required (Expert: Christer Holmberg)
RID Attribute Parameters
RFC 8851
Specification Required (Expert: Adam Roach)
"rtcp-fb" Attribute Values
RFC 4585
RFC 8859
First Come First Served with permanent, stable, and publically accessible document.
SDP Capability Negotiation Configuration Parameters Registry
RFC 5939
RFC 6871
IETF Review
SDP Capability Negotiation Option Tags
RFC 5939
RFC 8859
IETF Review
SDP/RTSP key management protocol identifiers
RFC 4567
RFC 8859
Specification Required (Expert: Magnus Westerlund)
Semantics for the "group" SDP Attribute
RFC 5888
RFC 8859
Standards Action
Semantics for the "ssrc-group" SDP Attribute
RFC 5576
RFC 8859
Standards Action
SRTP Crypto Suite Registrations
RFC 4568
Standards Action
SRTP Session Parameters
RFC 4568
Standards Action
Timestamp Reference Clock Source Parameters
RFC 7273
RFC 8859
Specification Required (Expert: Magnus Westerlund)
Session Initiation Protocol (SIP) Common Log Format (CLF) Parameters
SIP CLF Transport Flag Values
RFC 6873
IETF Review
SIP CLF Version Values
RFC 6873
Standards Action
Session Initiation Protocol (SIP) Event Types Namespace
Event packages and Event template-packages
RFC 3427
RFC 6665
RFC 5727
event template packages: Standards Action.
event packages: RFC Required with Designated Expert.
(Expert: Adam Roach)
Session Initiation Protocol (SIP) Parameters
Compression Schemes
RFC 3486
Standards Action
Geolocation-Error Codes
RFC 6442
Specification Required (Expert: Unassigned)
Global Feature-Capability Indicator Registration Tree
RFC 6809
Specification Required (Expert: Paul Kyzivat (primary), Christer Holmberg (secondary))
Header Field Parameters and Parameter Values
RFC 3968
IETF Review
Header Fields
RFC 3261
RFC 5727
Informational Header: Expert Review.
Standard Header: Standards Action.
(Expert: Adam Roach)
Identity Parameters
RFC 8224
Standards Action
Identity-Info Algorithm Parameter Values
RFC 8224
Deprecated and closed per RFC8224
Info Packages Registry
RFC 6086
Specification Required (Expert: Adam Roach)
Methods and Response Codes
RFC 3261
RFC 5727
Standards Action
Option Tags
RFC 3261
RFC 5727
Standards Action
Precondition Types Used with SIP
RFC 4032
RFC 3312
Standards Action
Preemption Namespaces
RFC 4411
Standards Action
Priority Header Field Values
RFC 6878
IETF Review
Proxy-Feature Feature-Capability Indicator Trees
RFC 6809
Standards Action
Push Notification Service (PNS)
RFC 8599
Specification Required (Expert: Christer Holmberg)
Reason Codes
RFC 6665
Standards Action
Reason Protocols
RFC 3326
Specification Required (Expert: Christer Holmberg)
Resource-Priority Namespaces
RFC 4412
RFC 7134
IETF Review
Resource-Priority Priority-values
RFC 4412
RFC 7134
IETF Review
Response Codes
RFC 3261
RFC Required
Security Mechanism Names
RFC 3329
IETF Review
Service-ID/Application-ID Labels
RFC 6050
Specification Required (Expert: Unassigned)
SIP AlertMsg-Error Codes
RFC 8876
Specification Required (Expert: Brian Rosen)
SIP Configuration Profile Types
RFC 6080
Specification Required (Expert: Unassigned)
SIP Feature-Capability Indicator Registration Tree
RFC 6809
IETF Review
SIP Forum User Agent Configuration Parameters
RFC 6011
begins with 'sfua-': RFC Required.
all other names: First Come First Served.
SIP Privacy Header Field Values
RFC 3323
IETF Review
SIP Transport
RFC 7118
Standards Action
SIP/SIPS URI Parameters
RFC 3969
RFC 5727
Standards Action
URI Purposes
RFC 4575
Specification Required (Expert: Unassigned)
UUI Content Parameters
RFC 7433
Standards Action
UUI Encoding Parameters
RFC 7433
Standards Action
UUI Packages
RFC 7433
Standards Action
Warning Codes (warn-codes)
RFC 3261
RFC Required
Session Initiation Protocol (SIP) Privacy Header Values
SIP Privacy Header Values
RFC 3323
IETF Review
Session Peering Provisioning Framework (SPPF) Organization Identifier Type Namespaces
SPPF OrgIdType Namespaces
RFC 7877
RFC Required
Session Traversal Utilities for NAT (STUN) Parameters
STUN Attributes
RFC 8489
0x0000-0x3FFF: IETF Review.
0x4000-0x7FFF: Expert Review.
0x8000-0xBFFF: IETF Review.
0xC000-0xFFFF: Expert Review.
(Expert: Dan Wing)
STUN Error Codes
RFC 8489
IETF Review
STUN Methods
RFC 8489
RFC 7983
0x000-0x07F: IETF Review.
0x080-0x0FF: Expert Review.
(Expert: Dan Wing)
STUN Password Algorithms
RFC 8489
0x0000-0x7FFF: IETF Review.
0x8000-0xFFFF: Expert Review.
(Expert: Dan Wing)
STUN Security Features
RFC 8489
Standards Action
Traversal Using Relays around NAT (TURN) Channel Numbers
RFC 7983
RFC 8656
Standards Action
SFrame
SFrame Cipher Suites
RFC 9605
0-0xEFFF: Specification Required.
0-0xEFFF: Standards Action.
0xF000-0xFFFF: Private Use.
(Expert: Richard Barnes (primary), Emad Omara (secondary))
Shim6 Parameters
Shim6 Error Codes
RFC 5533
Standards Action
Shim6 Options
RFC 5533
Standards Action
Shim6 Types
RFC 5533
Standards Action
Shim6 Verification Methods
RFC 5533
Standards Action
Sieve Extensions
ManageSieve Capabilities
RFC 5804
Standards Track or IESG-Approved Experimental RFC
ManageSieve Response Codes
RFC 5804
Standards Track or IESG-Approved Experimental RFC
Notification-Capability Parameters
RFC 5435
Vendor-controlled: First Come First Served.
IETF-controlled: Specification Required.
(Expert: Barry Leiba, Alexey Melnikov)
Sieve Actions
RFC 9122
Expert Review (Expert: Alexey Melnikov, Ken Murchison)
Sieve Environment Items
RFC 5183
name begins with "vnd.": First Come First Served.
standardized (no "vnd." prefix): Standards track or experimental RFC.
Sieve Extensions
RFC 5228
vendor-controlled (name begins with "vnd."): First Come First Served.
IETF-controlled (no "vnd." prefix): Standards track or IESG-approved experimental RFC.
Sieve Notification Mechanisms
RFC 5435
Vendor-controlled: First Come First Served.
IETF-controlled: Specification Required.
(Expert: Unassigned)
Sieve URN Parameters
RFC 6134
Specification Required (Expert: Unassigned)
SIG (0) Algorithm Numbers
SIG (0) Algorithm Numbers
RFC 3755
Standards Action
Signaling Compression (SigComp) Registry
SigComp_version Namespace
RFC 3320
Standards Action
Signaling User Adaptation Layer Assignments
Message Classes
RFC 3057
RFC 4233
IETF Review
Message Parameters
RFC 3331
RFC 4233
RFC 4666
IETF Review
Message Types - ASP State Maintenance (ASPSM) Messages (Value 3)
RFC 4233
RFC 3331
RFC 4666
RFC 3868
RFC 4129
RFC 3057
IETF Review
Message Types - ASP Traffic Maintenance (ASPTM) Messages (Value 4)
RFC 4233
RFC 3331
RFC 4666
RFC 3868
RFC 4129
RFC 3057
IETF Review
Message Types - Connection-Oriented Messages (Value 8)
RFC 3868
IETF Review
Message Types - Connectionless Messages (Value 7)
RFC 3868
IETF Review
Message Types - DPNSS/DASS2 Boundary Primitives Transport Messages (Value 13)
RFC 4129
IETF Review
Message Types - Interface Identifier Management (IIM) Messages (Value 10)
RFC 3331
IETF Review
Message Types - M2PA Messages (Value 11)
RFC 4165
IETF Review
Message Types - Management (MGMT) Message (Value 0)
RFC 4233
RFC 3331
RFC 4666
RFC 3868
RFC 4129
RFC 3057
IETF Review
Message Types - MTP2 User Adaptation (MAUP) Messages (Value 6)
RFC 3331
IETF Review
Message Types - Q.921/Q.931 Boundary Primitives Transport (QPTM) Messages (Value 5)
RFC 4233
IETF Review
Message Types - Routing Key Management (RKM) Messages (Value 9)
RFC 4666
IETF Review
Message Types - Security Messages (Value 12)
RFC 3788
IETF Review
Message Types - SS7 Signalling Network Management (SSNM) Messages (Value 2)
RFC 4666
RFC 3868
IETF Review
Message Types - Transfer Messages (Value 1)
RFC 4666
IETF Review
Message Types - V5 Boundary Primitives Transport (V5PTM) Messages (Value 14)
RFC 3807
IETF Review
Simple Authentication and Security Layer (SASL) Mechanisms
SASL Mechanisms
RFC 4422
First Come First Served for mechanisms.
Expert Review with mailing list for family name registrations.
For names beginning with "GS2-", see RFC 5801.
For names beginning with "SCRAM-", see RFC7677. (Expert: Simon Josefsson)
SASL SCRAM Family Mechanisms
RFC 7677
IETF Review with mailing list
Simple Certificate Enrollment Protocol (SCEP)
SCEP CA Capabilities
RFC 8894
IETF Review
SCEP Message Types
RFC 8894
Specification Required (Expert: Peter Gutmann)
Simple Gateway Monitoring Protocol (SGMP) Vendor Specific Codes (Obsolete)
SGMP Vendor Specific Codes (Obsolete)
RFC 1028
No further registrations
Simple Mail Transfer Protocol (SMTP) Enhanced Status Codes Registry
Class Sub-Codes
RFC 5248
Specification Required (Expert: Chris Newman)
Enumerated Status Codes
RFC 5248
Specification Required (Expert: Chris Newman)
Subject Sub-Codes
RFC 5248
Specification Required (Expert: Chris Newman)
Simple Network Management Protocol (SNMP) Number Spaces
Message Processing Models
RFC 3411
Standards Action
Security Models
RFC 3411
Standards Action
SNMP Transport Domains
RFC 2578
RFC 3417
RFC 5590
Specification Required (Expert: Unassigned)
SnmpAuthProtocols
RFC 3411
Standards Action
SnmpEngineID Formats
RFC 3411
RFC 5343
1-127: Specification Required.
128-255: Enterprise-specific.
(Expert: Unassigned)
SnmpPrivProtocols
RFC 3411
Standards Action
Simple Two-way Active Measurement Protocol (STAMP)
Return Path Control Code Flags
RFC 9503
31-12: IETF Review.
11-8: First Come First Served.
7-4: Experimental Use.
3-0: Private Use.
Return Path Sub-TLV Types
RFC 9503
1-175: IETF Review.
176-239: First Come First Served.
240-251: Experimental Use.
252-254: Private Use.
STAMP Return Codes
RFC 8972
1-127: IETF Review.
128-239: First Come First Served.
240-249: Experimental Use.
250-254: Private Use.
STAMP Sub-TLV Types
RFC 8972
1-175: IETF Review.
176-239: First Come First Served.
240-251: Experimental Use.
252-254: Private Use.
STAMP Synchronization Sources
RFC 8972
1-127: IETF Review.
128-239: First Come First Served.
240-249: Experimental Use.
250-254: Private Use.
STAMP Timestamping Methods
RFC 8972
1-127: IETF Review.
128-239: First Come First Served.
240-249: Experimental Use.
250-254: Private Use.
STAMP TLV Flags
RFC 8972
IETF Review
STAMP TLV Types
RFC 8972
1-175: IETF Review.
176-239: First Come First Served.
240-251: Experimental Use.
252-254: Private Use.
SMTP MTA Strict Transport Security (MTA-STS)
MTA-STS Policy Fields
RFC 8461
Expert Review (Expert: Unassigned)
MTA-STS TXT Record Fields
RFC 8461
Expert Review (Expert: Unassigned)
Snoop Datalink Types
Datalink Types
RFC 3827
0-26: Reserved.
27-4294967295: First Come First Served.
SOCKS Methods
SOCKS Method Values
RFC 1928
IESG Approval
Software ID Values
Software ID Entity Role Values
RFC 9393
0-127: Standards Action with Expert Review.
128-255: Specification Required.
(Expert: Charles Schmidt, Jessica Fitzgerald-McKay, Henk Birkholz)
Software ID Link Ownership Values
RFC 9393
0-127: Standards Action with Expert Review.
128-255: Specification Required.
(Expert: Charles Schmidt, Jessica Fitzgerald-McKay, Henk Birkholz)
Software ID Link Relationship Values
RFC 9393
0-32767: Standards Action with Expert Review.
32768-65535: Specification Required.
(Expert: Charles Schmidt, Jessica Fitzgerald-McKay, Henk Birkholz)
Software ID Link Use Values
RFC 9393
0-127: Standards Action with Expert Review.
128-255: Specification Required.
(Expert: Charles Schmidt, Jessica Fitzgerald-McKay, Henk Birkholz)
Software ID Version Scheme Values
RFC 9393
0-16383: Standards Action with Expert Review.
16384-65535: Specification Required.
(Expert: Charles Schmidt, Jessica Fitzgerald-McKay, Henk Birkholz)
Software Update for the Internet of Things (SUIT)
COSE SUIT Algorithm Profiles
draft-ietf-suit-mti-23
Standards Action
SUIT Commands
draft-ietf-suit-manifest-34
less than -255: Private Use.
-255 to 255: Standards Action.
greater than 255: Specification Required.
(Expert: Brendan Moran, Hannes Tschofenig)
SUIT Common Elements
draft-ietf-suit-manifest-34
less than -255: Private Use.
-255 to 255: Standards Action.
greater than 255: Specification Required.
(Expert: Brendan Moran, Hannes Tschofenig)
SUIT Component Text Values
draft-ietf-suit-manifest-34
less than -255: Private Use.
-255 to 255: Standards Action.
greater than 255: Specification Required.
(Expert: Brendan Moran, Hannes Tschofenig)
SUIT Envelope Elements
draft-ietf-suit-manifest-34
less than -255: Private Use.
-255 to 255: Standards Action.
greater than 255: Specification Required.
(Expert: Brendan Moran, Hannes Tschofenig)
SUIT Manifest Elements
draft-ietf-suit-manifest-34
less than -255: Private Use.
-255 to 255: Standards Action.
greater than 255: Specification Required.
(Expert: Brendan Moran, Hannes Tschofenig)
SUIT Parameters
draft-ietf-suit-manifest-34
less than -255: Private Use.
-255 to 255: Standards Action.
greater than 255: Specification Required.
(Expert: Brendan Moran, Hannes Tschofenig)
SUIT Text Values
draft-ietf-suit-manifest-34
less than -255: Private Use.
-255 to 255: Standards Action.
greater than 255: Specification Required.
(Expert: Brendan Moran, Hannes Tschofenig)
SUIT_Capability_Report Elements
draft-ietf-suit-report-19
-4294967296 to -65537: First Come First Served.
-65536 to -257: Specification Required.
-256 to 255: Standards Action With Expert Review.
256 to 65535: Specification Required.
65536 to 4294967295: First Come First Served.
(Expert: Unassigned)
SUIT_Record Elements
draft-ietf-suit-report-19
-4294967296 to -65537: First Come First Served.
-65536 to -257: Specification Required.
-256 to 255: Standards Action With Expert Review.
256 to 65535: Specification Required.
65536 to 4294967295: First Come First Served.
(Expert: Unassigned)
SUIT_Report Elements
draft-ietf-suit-report-19
-4294967296 to -65537: First Come First Served.
-65536 to -257: Specification Required.
-256 to 255: Standards Action With Expert Review.
256 to 65535: Specification Required.
65536 to 4294967295: First Come First Served.
(Expert: Unassigned)
SUIT_Report Reasons
draft-ietf-suit-report-19
-4294967296 to -65537: First Come First Served.
-65536 to -257: Specification Required.
-256 to 255: Standards Action With Expert Review.
256 to 65535: Specification Required.
65536 to 4294967295: First Come First Served.
(Expert: Unassigned)
Special People Numbers Registry (SPNR)
Special People Numbers Registry
Not an IETF Registry. Contact IANA
Special-Purpose Autonomous System (AS) Numbers
Special-Purpose AS Numbers
RFC 7249
IETF Review
Special-Use Domain Names
Special-Use Domain Names
RFC 6761
Standards Action or IESG Approval
STARTTLS Validation Result Types
STARTTLS Validation Result Types
RFC 8460
Expert Review (Expert: Alexander Brotman, Daniel Margolis, Viktor Dukhovni)
Straightforward-NAPTR (S-NAPTR) Parameters
S-NAPTR Application Protocol Tags
RFC 3958
RFC 4848
Specification Required in form of an RFC (Expert: Jouni Korhonen)
S-NAPTR Application Service Tags
RFC 3958
RFC 4848
Specification Required in form of an RFC (Expert: Jouni Korhonen)
Stream Control Transmission Protocol (SCTP) Parameters
Adaptation Code Points
RFC 5061
IETF Review
Chunk Flags
RFC 9260
RFC Required
Chunk Parameter Types
RFC 9260
IETF Review
Chunk Types
RFC 9260
IETF Review
Error Cause Codes
RFC 9260
Specification Required (Expert: Michael Tuexen, Randall Stewart)
Error Detection Methods
RFC 9653
Specification Required (Expert: Michael Tuexen, Magnus Westerlund)
Hashed Message Authentication Code (HMAC) Identifiers
RFC 4895
Specification Required (Expert: Unassigned)
SCTP Payload Protocol Identifiers
RFC 9260
First Come First Served
Stringprep Profiles
Stringprep Profiles
RFC 3454
IETF Review
Structure of Management Information (SMI) Numbers (MIB Module Registrations)
Interface Types (ifType)
RFC 1213
RFC 2863
RFC 7224
RFC 8892
Expert Review (Expert: Dave Thaler)
Internet-standard MIB - Mail Monitoring
Internet-standard MIB - Network Services Monitoring
IPFIX-SELECTOR-MIB Functions
RFC 6615
Expert Review (Expert: Unassigned)
MIB - Remote Network Monitoring
RFC 2819
RFC 3737
Standards Action
Private Enterprise Numbers (PENs)
RFC 9371
First Come First Served
SMI Experimental Codes
RFC 4181
RFC 2578
RFC 1155
Experimental RFC
SMI Features
RFC 2506
Not Defined ?
SMI mail Codes
Not Defined ?
SMI mib-2 snanauMIB Codes
RFC 1666
Not Defined ?
SMI Network Management Directory Codes
SMI Network Management MGMT Codes
RFC 2578
Not Defined ?
SMI pib PIB Codes
RFC 3159
Standards Action
SMI Private Codes
RFC 2578
Not Defined
SMI Security Codes (including S/MIME, PKIX and LTANS)
Not Defined ?
SMI Security for Cryptographic Algorithms
RFC 8411
Specification Required (Expert: Russ Housley (primary), Sean Turner (secondary))
SMI Security for Name System Designators Codes (nametypes)
Not Defined ?
SMI Security Services Codes
IETF Review
SMI SNMPv2 Codes
RFC 2578
RFC 1902
IETF Review
SNMP Management Architecture - Message Processing Subsystem (SnmpMessageProcessingModel)
SNMP Management Architecture - Security Subsystem (SnmpSecurityModel)
SNMP-TLSTM HashAlgorithms
RFC 9456
Expert Review (Expert: Russ Housley, Sean Turner)
spdActions
RFC 4807
Specification Required (Expert: Wes Hardaker)
Transmission Number Values
RFC 1213
RFC 8892
Specification Required (Expert: Dave Thaler)
Tunnel Types (tunnelType)
RFC 4087
RFC 8675
RFC 8892
Expert Review (Expert: Dave Thaler)
Structured Data Exchange Format (SDXF)
Compression Methods for SDXF
RFC 3072
RFC or equivalent
Encryption Methods for SDXF
RFC 3072
RFC or equivalent
Subsequent Address Family Identifiers (SAFI) Parameters
SAFI Values
RFC 4760
1-63: Standards Action.
64-127: First Come First Served.
128-240: Some recognized assignments below, others Reserved.
241-254: Reserved for Private Use.
SUN Remote Procedure Call (RPC) Numbers - Obsolete
SUN RPC Numbers
RFC 1831
syslog Parameters
syslog Message Facilities
RFC 5424
IETF Review
syslog Message Severities
RFC 5424
IETF Review
syslog Structured Data ID Values
RFC 5424
IETF Review
syslog Version Values
RFC 5424
Standards Action
syslog-sign Hash Algorithm Values
RFC 5848
IETF Review
syslog-sign Key Blob Type Values
RFC 5848
IETF Review
syslog-sign Protocol Version Values
RFC 5848
IETF Review
syslog-sign SG Field Values
RFC 5848
IETF Review
syslog-sign Signature Scheme Values
RFC 5848
IETF Review
System for Cross-domain Identity Management (SCIM) Schema URIs
SCIM Event URIs
draft-ietf-scim-events-15
Expert Review (Expert: Unassigned)
SCIM Schema URIs for Data Resources
RFC 7643
"core" and "API" schemas: RFC and Expert Review Required.
All other schemas: Expert Review.
(Expert: Phil Hunt, Paulo Jorge N. Correia)
SCIM Server-Related Schema URIs
RFC 7643
"core" and "API" schemas: RFC and Expert Review Required.
All other schemas: Expert Review.
(Expert: Phil Hunt, Paulo Jorge N. Correia)
TCP Convert Protocol (Convert) Parameters
Convert Errors
RFC 8803
1-127: IETF Review.
128-191: Specification Required.
192-255: Private Use.
(Expert: Mohamed Boucadair (primary), Olivier Bonaventure (secondary))
Convert TLVs
RFC 8803
1-127: IETF Review.
128-191: Specification Required.
192-255: Private Use.
(Expert: Mohamed Boucadair (primary), Olivier Bonaventure (secondary))
Convert Versions
RFC 8803
IETF Review
Telephony Routing over IP (TRIP) Parameters
TRIP Address Families
RFC 3219
Expert Review (Expert: Jonathan Rosenberg)
TRIP Application Protocols
RFC 3219
Expert Review (Expert: Jonathan Rosenberg)
TRIP Attributes
RFC 3219
Specification Required (Expert: Unassigned)
TRIP Capabilities
RFC 3219
Specification Required (Expert: Unassigned)
TRIP IP Telephony Administrative Domain (ITAD) Numbers
RFC 3219
RFC 8602
First Come First Served
Telnet Options
CAST5_40_CFB64 (Type 8) and CAST128_CFB64 (Type 10) Telnet Encryption Types
RFC 2950
First Come First Served
CAST5_40_OFB64 (Type 9) and CAST128_OFB64 (Type 11) Telnet Encryption Types
RFC 2949
First Come First Served
DES3_CFB64 Telnet Encryption Type (Type 3)
RFC 2947
First Come First Served
DES3_OFB64 Telnet Encryption Type (Type 4)
RFC 2948
First Come First Served
DES_CFB64 Telnet Encryption Type (Type 1)
RFC 2952
First Come First Served
DES_OFB64 Telnet Encryption Type (Type 2)
RFC 2953
First Come First Served
DSS Authentication Type (Type 14)
RFC 2943
Specification Required (Expert: Unassigned)
KEA_SJ (Type 12) and KEA_SJ_INTEG (Type 13) Authentication Types
RFC 2951
Specification Required (Expert: Unassigned)
KERBEROS_V4 Telnet Authentication Type (Type 1)
RFC 1411
First Come First Served
KERBEROS_V5 Telnet Authentication Type (Type 2)
RFC 2942
Specification Required (Expert: Unassigned)
SRP Telnet Authentication Type (Type 5)
RFC 2944
Specification Required (Expert: Unassigned)
Telnet Authentication Types (Option 37)
RFC 2941
First Come First Served
Telnet Encryption Types (Option 38)
RFC 2946
First Come First Served
Telnet Options
RFC 855
IETF Review
Terminal Type Names
Terminal Type Names
RFC 1091
Not defined?
The Binary Floor Control Protocol (BFCP) Parameters
Attributes
RFC 8855
Specification Required (Expert: Brian Rosen, Tom Kristensen)
Error Codes
RFC 8855
Specification Required (Expert: Brian Rosen, Tom Kristensen)
Primitives
RFC 8855
Specification Required (Expert: Brian Rosen, Tom Kristensen)
Request Statuses
RFC 8855
Specification Required (Expert: Brian Rosen, Tom Kristensen)
The Extensible Authentication Protocol Mechanism for the Generic Security Service Application Programming Interface (GSS-EAP) Parameters
GSS-EAP Context Flags
RFC 7055
IETF Review or IESG Approval
GSS-EAP Error Codes
RFC 7055
0-127: Standards Action.
128-255: Specification Required.
(Expert: Joseph Salowey)
GSS-EAP Subtoken Types
RFC 7055
Expert Review (Expert: Joseph Salowey)
Time Zone Data Distribution Service (TZDIST) Parameters
TZDIST Identifiers
RFC 7808
IETF Review
TZDIST Service Actions
RFC 7808
Specification Required (Expert: Michael Douglass)
Timed Efficient Stream Loss-tolerant Authentication (TESLA) Parameters
Cryptographic Message Authentication Code (MAC) Function, TESLA-MAC Values
RFC 4442
Expert Review (Expert: MSEC working group or its designated successor)
Cryptographic Pseudo-Random Function, TESLA-PRF Values
RFC 4442
Expert Review (Expert: MSEC working group or its designated successor)
Signature Cryptographic Function, TESLA-SIG-CRYPTO-FUNC Values
RFC 5776
Expert Review (Expert: MSEC working group or its designated successor)
Signature Encoding Algorithm, TESLA-SIG-ALGO Values
RFC 5776
Expert Review (Expert: MSEC working group or its designated successor)
TLS-based Posture Transport Protocol (PT-TLS)
PT-TLS Error Codes
RFC 6876
Specification Required (Expert: Unassigned)
PT-TLS Message Types
RFC 6876
Specification Required (Expert: Unassigned)
Token Binding Protocol
Token Binding Extensions
RFC 8471
Specification Required (Expert: Andrei Popov, Dirk Balfanz)
Token Binding Key Parameters
RFC 8471
Specification Required (Expert: Andrei Popov, Dirk Balfanz)
Token Binding Types
RFC 8471
Specification Required (Expert: Andrei Popov, Dirk Balfanz)
Trailer Types
Trailer Types
RFC 6081
Specification Required (Expert: Unassigned)
Transfer Encodings
Transfer Encodings
RFC 4289
Standards Action
Transmission Control Protocol (TCP) Header Flags
TCP Header Flags
RFC 9293
Standards Action
Transmission Control Protocol (TCP) Parameters
Cryptographic Algorithms for TCP-AO Registration
RFC 5926
RFC Publication After Expert Review
MPTCP Handshake Algorithms
RFC 8684
Standards Action
MPTCP MP_TCPRST Reason Codes
RFC 8684
Specification Required (Expert: Unassigned)
MPTCP Option Subtypes
RFC 8684
Standards Action
TCP Alternate Checksum Numbers
RFC 1146
Not defined
TCP Encryption Protocol Identifiers
RFC 8547
IETF Review or Expert Review with RFC Required (Expert: Unassigned)
TCP Header Flags
RFC 9293
Standards Action
TCP Option Kind Numbers
RFC 2780
Standards Action or IESG Approval
TCP/UDP Experimental Option Experiment Identifiers (TCP/UDP ExIDs)
RFC 6994
RFC 9868
First Come First Served
tcpcrypt AEAD Algorithms
RFC 8548
IETF Review or Expert Review with RFC Required (Expert: Unassigned)
Transparent Interconnection of Lots of Links (TRILL) Parameters
Extended RBridge Channel Payload Types
RFC 7978
IETF Review
Extended RBridge Channel Security Types
RFC 7978
IETF Review
Interested Labels Flag Bits
RFC 7176
RFC 7357
IETF Review
Interested VLANs Flag Bits
RFC 7176
RFC 7357
IETF Review
PORT-TRILL-VER Sub-TLV Capability Flags
RFC 7176
IETF Review
RBridge Channel Error Codes
RFC 7178
Standards Action
RBridge Channel Header Flags
RFC 7178
IETF Review
RBridge Channel Protocols
RFC 7178
0x002-0x0FF: Standards Action.
0x100-0xFF7: RFC Required.
0x100-0xFF7: IESG Approval.
TRILL APPsub-TLV Types under IS-IS TLV 251 Application Identifier 1
RFC 7357
IETF Review with additional requirements on the
documentation of the use being registered as specified in
Section 7.2 of
RFC 7357
TRILL Ethertypes
RFC 8377
Ethertypes are assigned by the IEEE Registration Authority.
Updates to this registry are coordinated with the designated
expert. (Expert: Donald Eastlake (primary), Sue Hares (secondary))
TRILL Extended Header Flags
RFC 7179
IETF Review
TRILL Multicast Addresses
RFC 6325
IETF Review
TRILL Neighbor TLV NEIGHBOR RECORD Flags
RFC 7176
Standards Action
TRILL Nicknames
RFC 6325
RFC Required (single value) or IETF Review (single or multiple values)
TRILL OAM Return Codes
RFC 7455
Standards Action
TRILL Pull Directory Errors
RFC 8171
IETF Review
TRILL Pull Directory Query Types (QTYPEs)
RFC 8171
IETF Review
TRILL-VER Sub-TLV Capability Flags
RFC 7176
IETF Review
Transport Layer Security (TLS)
TLS Alerts
draft-ietf-tls-rfc8446bis-13
draft-ietf-tls-tls12-frozen-08
Standards Action
TLS Application-Layer Protocol Negotiation (ALPN) Protocol IDs
RFC 7301
RFC 8447
RFC 9847
Expert Review (Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS Authorization Data Formats
RFC 5878
RFC 8447
draft-ietf-tls-tls12-frozen-08
RFC 9847
0-63: IETF Review.
64-223: Specification Required.
224-255: Reserved for Private Use.
(Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS CachedInformationType Values
RFC 7924
draft-ietf-tls-tls12-frozen-08
RFC 9847
0-63: Standards Action.
64-223: Specification Required.
(Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS Certificate Compression Algorithm IDs
RFC 8879
draft-ietf-tls-tls12-frozen-08
RFC 9847
1-255: IETF Review.
256-16383: Specification Required.
16384-65535: Experimental Use.
(Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS Certificate Status Types
RFC 6961
draft-ietf-tls-rfc8446bis-13
draft-ietf-tls-tls12-frozen-08
RFC 9847
IETF Review
TLS Certificate Types
RFC 6091
draft-ietf-tls-rfc8446bis-13
RFC 8447
draft-ietf-tls-tls12-frozen-08
RFC 9847
"Recommended" set to/transitioning from "Y" or "D": Either Standards Action With Expert Review or IESG Approval.
"Recommended" set to "N," not transitioning from another value: Specification Required.
(Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS Cipher Suites
draft-ietf-tls-rfc8446bis-13
RFC 8447
RFC 9147
draft-ietf-tls-tls12-frozen-08
RFC 9847
"Recommended" set to/transitioning from "Y" or "D": Either Standards Action With Expert Review or IESG Approval.
"Recommended" set to "N," not transitioning from another value: Specification Required.
(Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS ClientCertificateType Identifiers
RFC 5246
RFC 8447
draft-ietf-tls-tls12-frozen-08
RFC 9847
0-223 ("Recommended" set to/transitioning from "Y" or "D"): Either Standards Action with Expert Review or IESG Approval.
0-223 ("Recommended" set to "N," not transitioning from another value): Specification Required.
224-255: Reserved for Private Use.
(Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS Compression Method Identifiers
RFC 3749
RFC 8447
0-63: Standards Action.
64-223: Specification Required.
224-255: Reserved for Private Use.
(Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS ContentType
draft-ietf-tls-rfc8446bis-13
RFC 9443
draft-ietf-tls-tls12-frozen-08
RFC 9847
Standards Action
TLS EC Curve Types
RFC 8422
draft-ietf-tls-tls12-frozen-08
RFC 9847
Specification Required (Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS EC Point Formats
RFC 8422
draft-ietf-tls-tls12-frozen-08
RFC 9847
Specification Required (Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS ECHConfig Extension
RFC 9849
Specification Required (Expert: Rich Salz, Nick Sullivan)
TLS Exporter Labels
RFC 5705
RFC 8447
RFC 9847
"Recommended" set to/transitioning from "Y" or "D": Either Standards Action With Expert Review or IESG Approval.
"Recommended" set to "N," not transitioning from another value: Expert Review.
(Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS ExtensionType Values
draft-ietf-tls-rfc8446bis-13
RFC 8447
RFC 9146
draft-ietf-tls-tls12-frozen-08
RFC 9847
"Recommended" set to/transitioning from "Y" or "D": Either Standards Action With Expert Review or IESG Approval.
"Recommended" set to "N," not transitioning from another value: Specification Required.
(Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS HandshakeType
draft-ietf-tls-rfc8446bis-13
draft-ietf-tls-tls12-frozen-08
Standards Action
TLS HashAlgorithm
RFC 5246
RFC 8447
RFC 9155
draft-ietf-tls-tls12-frozen-08
RFC 9847
0-223 ("Recommended" set to/transitioning from "Y" or "D"): Either Standards Action with Expert Review or IESG Approval.
0-223 ("Recommended" set to "N," not transitioning from another value): Specification Required.
224-255: Reserved for Private Use.
(Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS Heartbeat Message Types
RFC 6520
RFC 8447
draft-ietf-tls-tls12-frozen-08
RFC 9847
Expert Review (Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS Heartbeat Modes
RFC 6520
RFC 8447
draft-ietf-tls-tls12-frozen-08
RFC 9847
Expert Review (Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS KDF Identifiers
RFC 9258
draft-ietf-tls-tls12-frozen-08
RFC 9847
0x0000-0xfeff: Specification Required.
0xff00-0xffff: Private Use.
(Expert: Rich Salz, Nick Sullivan)
TLS PskKeyExchangeMode
draft-ietf-tls-rfc8446bis-13
draft-ietf-tls-tls12-frozen-08
RFC 9847
"Recommended" set to/transitioning from "Y" or "D": Either Standards Action With Expert Review or IESG Approval.
"Recommended" set to "N," not transitioning from another value: Specification Required.
(Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS RRC Message Types
RFC 9853
Expert Review (Expert: Rich Salz, Nick Sullivan, Yoav Nir)
TLS SignatureAlgorithm
RFC 5246
RFC 8447
RFC 9155
draft-ietf-tls-tls12-frozen-08
RFC 9847
0-223 ("Recommended" set to/transitioning from "Y" or "D"): Either Standards Action with Expert Review or IESG Approval.
0-223 ("Recommended" set to "N," not transitioning from another value): Specification Required.
224-255: Reserved for Private Use.
(Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS SignatureScheme
draft-ietf-tls-rfc8446bis-13
draft-ietf-tls-tls12-frozen-08
RFC 9847
"Recommended" set to/transitioning from "Y" or "D": Either Standards Action With Expert Review or IESG Approval.
"Recommended" set to "N," not transitioning from another value: Specification Required.
(Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS SSLKEYLOGFILE Labels
draft-ietf-tls-keylogfile-05
RFC 9847
Specification Required (Expert: Unassigned)
TLS Supplemental Data Formats (SupplementalDataType)
RFC 4680
RFC 8447
draft-ietf-tls-tls12-frozen-08
RFC 9847
0-16385: Standards Action.
16386-65279: IETF Review.
65280-65535: Reserved for Private Use.
TLS Supported Groups
RFC 8422
RFC 7919
draft-ietf-tls-rfc8446bis-13
RFC 8447
draft-ietf-tls-tls12-frozen-08
RFC 9847
draft-ietf-tls-hybrid-design-16
0-255 ("Recommended" set to/transitioning from "Y" or "D"): Either Standards Action with Expert Review or IESG Approval.
0-255 ("Recommended" set to "N," not transitioning from another value): Specification Required.
256-511 ("Recommended" set to/transitioning from "Y" or "D"): Either Standards Action with Expert Review or IESG Approval.
256-511 ("Recommended" set to "N," not transitioning from another value): Specification Required.
512-65535 ("Recommended" set to/transitioning from "Y" or "D"): Either Standards Action with Expert Review or IESG Approval.
512-65535 ("Recommended" set to "N," not transitioning from another value): Specification Required.
(Expert: Yoav Nir, Rich Salz, Nick Sullivan)
TLS UserMappingType Values
RFC 4681
draft-ietf-tls-tls12-frozen-08
RFC 9847
0-63: Standards Action.
64-223: Specification Required.
224-255: Reserved for Private Use.
(Expert: Yoav Nir, Rich Salz, Nick Sullivan)
Trusted Execution Environment Provisioning (TEEP)
TEEP CBOR Labels
draft-ietf-teep-protocol-26
0-255: Standards Action.
256-1023: Specification Required.
(Expert: Unassigned)
TEEP data-item-requested Bits
draft-ietf-teep-protocol-26
0-23: Standards Action.
24-254: Specification Required.
255: Private Use.
(Expert: Unassigned)
TEEP Error Codes
draft-ietf-teep-protocol-26
0-23: Standards Action.
24-255: Specification Required.
(Expert: Unassigned)
TEEP Freshness Mechanisms
draft-ietf-teep-protocol-26
0-23: Standards Action.
24-255: Specification Required.
(Expert: Unassigned)
TEEP Message Types
draft-ietf-teep-protocol-26
0-23: Standards Action.
24-255: Specification Required.
(Expert: Unassigned)
Tunnel Setup Protocol (TSP) Parameters
Tunnel Types
RFC 5572
First Come First Served
Two-way Active Measurement Protocol (TWAMP) Parameters
TWAMP-Control Command Numbers
RFC 5357
RFC 5938
IETF Review
TWAMP-Modes
RFC 5618
RFC 5938
RFC 7717
IETF Review
UDP Speed Test Protocol (UDPSTP)
PDU Identifier
draft-ietf-ippm-capacity-protocol-25
0x0000: Reserved.
0x0001-0x7F00: Specification Required.
0x7F01-0x7FE0: Experimental Use.
0x7FE1-0x7FFF: Private Use.
0x8000-0xFFFE: IETF Review.
0xFFFF: Reserved.
(Expert: Unassigned)
Protocol Version
draft-ietf-ippm-capacity-protocol-25
0-19: Reserved.
20-40960: IETF Review.
40961-53248: Specification Required.
53249-65534: Experimental Use.
65535: Reserved.
(Expert: Unassigned)
Test Activation PDU Command Request
draft-ietf-ippm-capacity-protocol-25
0-127: IETF Review.
128-239: Specification Required.
240-249: Experimental Use.
250-254: Private Use.
255: Reserved.
(Expert: Unassigned)
Test Activation PDU Command Response Field
draft-ietf-ippm-capacity-protocol-25
0-127: IETF Review.
128-239: Specification Required.
240-249: Experimental Use.
250-254: Private Use.
255: Reserved.
(Expert: Unassigned)
Test Activation PDU Modifier Bitmap
draft-ietf-ippm-capacity-protocol-25
00000000-01111111: IETF Review.
10000000: Reserved.
Test Activation PDU Rate Adjustment Algo
draft-ietf-ippm-capacity-protocol-25
A-Y: IETF Review.
Z: Reserved.
Test Setup PDU Authentication Mode
draft-ietf-ippm-capacity-protocol-25
0-59: IETF Review.
60-63: Experimental Use.
64-255: Reserved.
Test Setup PDU Command Response Field
draft-ietf-ippm-capacity-protocol-25
0-127: IETF Review.
128-239: Specification Required.
240-249: Experimental Use.
250-254: Private Use.
255: Reserved.
(Expert: Unassigned)
Test Setup PDU Modifier Bitmap
draft-ietf-ippm-capacity-protocol-25
00000000-01111111: IETF Review.
10000000: Reserved.
Unidirectional Lightweight Encapsulation (ULE) Next-Header Registry
Mandatory Extension Headers (or link-dependent type fields) for ULE (Range 0-255 decimal)
RFC 4326
RFC 7280
Specification Required (Expert: Gorry Fairhurst)
Optional Extension Headers for ULE (Range 256-511 decimal)
RFC 4326
RFC 7280
Specification Required (Expert: Gorry Fairhurst)
Uniform Resource Identifier (URI) Schemes
"about" URI Tokens
RFC 6694
First Come First Served
'geo' URI 'crs' Parameter Values
RFC 5870
IESG Approval with Specification Required
'geo' URI Parameters
RFC 5870
Specification Required (Expert: Unassigned)
'ipn' Scheme URI Allocator Identifiers
RFC 9758
0-0xFFFF: Expert Review.
0x10000-0x3FFFFFFF: Expert Review.
0x40000000-0x7FFFFFFF: Experimental Use.
0x80000000-0xFFFFFFFF: Reserved.
>=0x100000000: Reserved.
(Expert: Edward Birrane, Rick Taylor)
'ipn' Scheme URI Default Allocator Node Numbers
RFC 7116
RFC 9758
1-0x3FFF (1-16383): Private Use.
0x4000-0xFFFFFFFE (16384-4294967294): Expert Review.
>=0x100000000 (>=4294967296): Invalid.
(Expert: Keith Scott)
'ipn' Scheme URI Well-Known Service Numbers for BPv7
RFC 9758
1-127: Private Use.
128-255: Standards Action.
0x0100-0x7FFF: Private Use.
0x8000-0xFFFF: Specification Required.
0x10000-0xFFFFFFFF: Private Use.
>=0x100000000: Reserved for future expansion.
(Expert: Edward Birrane, Rick Taylor, Brian Sipos)
POSH Service Names
RFC 7711
Expert Review or IETF Review (Expert: Unassigned)
tel URI Parameters
RFC 5341
Specification Required (Expert: Vijay Gurbani)
Uniform Resource Identifier (URI) Schemes
RFC 7595
RFC 8615
draft-ietf-core-href-29
Permanent: Expert Review.
Provisional: First Come First Served.
Historical: Expert Review.
CRI Scheme Number field: 0-999: Expert Review.
CRI Scheme Number field: 1000-20000: First Come First Served.
(Expert: Registry: Mark Baker (primary), Murray Kucherawy (backup)
CRI Scheme Number field: Henk Birkholz, Marco Tiloca)
Well-Known URIs
RFC 8615
Specification Required (Expert: Mark Nottingham)
Uniform Resource Name (URN) Namespace for IETF Use
IETF URN Sub-namespace for Registered Protocol Parameter Identifiers
RFC 3553
IETF Review
IETF URN Sub-namespaces
RFC 6924
IETF Review
Uniform Resource Names (URN)
Alert URN Identifiers
RFC 7462
Specification Required (Expert: Dale Worley)
Alert URN Providers
RFC 7462
First Come First Served
Formal URN Namespaces
RFC 8141
Expert Review, per Section 6 of
RFC 8141
Fast-track procedure for standards organizations described in Section 6.3. (Expert: Peter Saint-Andre (team leader), Dale Worley, Juha Hakala, Stephanie Nitsche, Lars Svensson)
Informal URN Namespaces
RFC 8141
Expert Review, per Section 6 of
RFC 8141
. (Expert: Peter Saint-Andre (team leader), Dale Worley, Juha Hakala, Stephanie Nitsche)
URN Service Labels
RFC 5031
Standards Action
User Datagram Protocol (UDP)
TCP/UDP Experimental Option Experiment Identifiers (TCP/UDP ExIDs)
RFC 6994
RFC 9868
UDP Option Kind Numbers
RFC 9868
Standards Action or IESG Approval
UUID
UUID Namespace IDs
RFC 9562
Specification Required (Expert: Kyzer Davis, Brad Peabody)
UUID Subtypes
RFC 9562
Standards Action With Expert Review (Expert: Kyzer Davis, Brad Peabody)
vCard Elements
vCard Parameter Values
RFC 6350
Expert Review and RFC Required (Expert: Primary: Simon Perreault; Backup: Peter Saint-Andre)
vCard Parameters
RFC 6350
No namespace specified: Expert Review and RFC Required.
Vendor namespace specified: First Come First Served.
(Expert: Primary: Simon Perreault; Backup: Peter Saint-Andre)
vCard Properties
RFC 6350
No namespace specified: Expert Review and RFC Required.
Vendor namespace specified: First Come First Served.
(Expert: Primary: Simon Perreault; Backup: Peter Saint-Andre)
vCard Property Values
RFC 6350
Expert Review and RFC Required (Expert: Primary: Simon Perreault; Backup: Peter Saint-Andre)
vCard Value Data Types
RFC 6350
Expert Review and RFC Required (Expert: Primary: Simon Perreault; Backup: Peter Saint-Andre)
VCDIFF Secondary Compressor ID Values
VCDIFF Secondary Compressor ID Values
RFC 3284
RFC or peer-reviewed permanent and readily available reference.
Subject to the above, name assignments are First Come First Served.
Vectors of Trust (VoT)
Vectors of Trust Components
RFC 8485
Specification Required (Expert: Justin Richer, Leif Johansson)
'version' symbols used within the ISUP and QSIG
application/ISUP symbols
RFC 3204
Expert Review (Expert: Jon Peterson)
application/QSIG symbols
RFC 3204
Expert Review (Expert: Jon Peterson)
Virtual Network Computing (VNC) Uniform Resource Identifier (URI)
VNC URI Connection Channel Types
RFC 7869
First Come First Served
VNC URI ID Hash Algorithms
RFC 7869
First Come First Served
VNC URI Parameters
RFC 7869
First Come First Served
WAVE and AVI Codec Registries (Historic Registry)
WAVE and AVI Codec Registries
RFC 2361
IANA does not assign. Republication of values.
Web Authentication (WebAuthn)
WebAuthn Attestation Statement Format Identifiers
RFC 8809
Specification Required (Expert: Mike Jones, Giridhar Mandyam)
WebAuthn Extension Identifiers
RFC 8809
Specification Required (Expert: Mike Jones, Giridhar Mandyam)
Web Push Parameters
VAPID Authentication Scheme Parameters
RFC 8292
Specification Required (Expert: Martin Thomson)
Web Push Identifiers
RFC 8030
IETF Review
Webfinger Parameters
Webfinger Properties
RFC 7033
Expert Review (Expert: Unassigned)
WebRTC-HTTP Ingestion Protocol (WHIP)
WebRTC-HTTP Ingestion Protocol (WHIP) Extension URNs
RFC 9725
Specification Required (Expert: Sergio Garcia Murillo, Nils Ohlmeier)
WebRTC-HTTP Ingestion Protocol (WHIP) URNs
RFC 9725
Specification Required (Expert: Sergio Garcia Murillo, Nils Ohlmeier)
WebSocket Protocol Registries
WebSocket Close Code Number Registry
RFC 6455
1000-2999: Standards Action, Specification Required or IESG Review.
3000-3999: First Come First Served.
(Expert: Alexey Melnikov)
WebSocket Extension Name Registry
RFC 6455
First Come First Served
WebSocket Framing Header Bits Registry
RFC 6455
Standards Action
WebSocket Opcode Registry
RFC 6455
Standards Action
WebSocket Subprotocol Name Registry
RFC 6455
RFC 7936
RFC 8864
First Come First Served
WebSocket Version Number Registry
RFC 6455
Standard Version Numbers: IETF Review.
Interim Version Numbers: Expert Review.
(Expert: HYBI WG Chairs)
Wrapped Encapsulating Security Payload (WESP) Flags
WESP Flags
RFC 5840
IETF Review
WESP Version Numbers
RFC 5840
Standards Action
X.25 Type Numbers
X.25 Type Numbers
Not assigned by IANA
Xerox Network System (XNS) Protocol Types
Assigned internet packet types
Not assigned by IANA
Assigned well-known socket numbers
Not assigned by IANA
XML Evidence Record Syntax (XMLERS)
Cryptographic Information Type
RFC 6283
RFC Required
Time-Stamp Token Type
RFC 6283
RFC Required
XML Security URIs
XML Security URIs
RFC 9231
Specification Required (Expert: Donald Eastlake, Alexey Melnikov)
YANG Geographic Location Parameters
Geodetic System Values
RFC 9179
First Come First Served
YANG Module Tags
IETF YANG Module Tags
RFC 8819
IETF Review
YANG Module Tag Prefixes
RFC 8819
Specification Required (Expert: Christian Hopps, Lou Berger)
YANG Modules
iana-bfd-types YANG Module
RFC 9127
RFC 5880
See BFD Diagnostic Codes and BFD Authentication Types registries.
iana-bgp-l2-encaps YANG Module
RFC 9291
RFC 6624
See BGP Layer 2 Encapsulation Types registry.
iana-crypt-hash YANG Module
RFC 7317
Expert Review (Expert: Kent Watsen)
iana-dns-class-rr-type YANG Module
RFC 9108
See DNS CLASSes and Resource Record (RR) TYPEs registries.
iana-dots-signal-channel YANG Module
RFC 9132
See the DOTS Status Codes, DOTS Conflict Status Codes, DOTS Conflict
Cause Codes, and DOTS Attack Status Codes registries.
iana-hardware YANG Module
RFC 8348
See IANA-ENTITY-MIB MIB module.
iana-http-versions YANG Module
draft-ietf-netconf-http-client-server-31
See the TLS Application-Layer Protocol Negotiation (ALPN) Protocol IDs registry.
iana-icmpv4-types YANG Module
RFC 9899
See ICMP Type Numbers registry.
iana-icmpv6-types YANG Module
RFC 9899
See ICMPv6 "type" Numbers registry.
iana-if-type YANG Module
RFC 1213
RFC 2863
RFC 7224
RFC 8892
This is one of the available formats of the Interface Types (ifType) registry.
iana-ipv6-ext-types YANG Module
RFC 9899
See IPv6 Extension Header Types registry.
iana-msd-types YANG Module
RFC 9702
See the IGP MSD-Types registry.
iana-ospf-functional-cap-bits YANG Module
draft-ietf-lsr-ospf-ls-link-infinity-25
New values must not be directly added to the "iana-ospf-functional-cap-bits"
YANG module. They must instead be added to the "OSPF Router Functional
Capability Bits" registry in the Open Shortest Path First (OSPF) Parameters
registry group.
iana-pseudowire-types YANG Module
RFC 9291
RFC 4446
See MPLS Pseudowire Types registry.
iana-routing-types YANG Module
RFC 8294
RFC 2453
RFC 2677
RFC 2858
RFC 4760
See Address Family Numbers and Subsequent Address Family
Identifiers (SAFI) Values registries.
iana-sip-option-tags YANG Module
draft-ietf-asap-sip-auto-peer-40
See the Option Tags registry.
iana-ssh-encryption-algs YANG Module
RFC 9644
See the Encryption Algorithm Names registry.
iana-ssh-key-exchange-algs YANG Module
RFC 9644
See the Key Exchange Method Names registry.
iana-ssh-mac-algs YANG Module
RFC 9644
See the MAC Algorithm Names registry.
iana-ssh-public-key-algs YANG Module
RFC 9644
See the Public Key Algorithm Names registry.
iana-tls-cipher-suite-algs YANG Module
RFC 9645
See the TLS Cipher Suites registry.
iana-tunnel-type YANG Module
RFC 4087
RFC 8675
RFC 8892
This is one of the available formats of the Tunnel Types (tunnelType) registry.
YANG Parameters
YANG Module Names
RFC 6020
RFC 9907
RFC 9890
RFC Required
YANG SIDs
IETF YANG-SID Modules
RFC 9595
Expert Review (Expert: Michel Veillette, Alexander Pelov, Laurent Toutain)
IETF YANG-SID Ranges
RFC 9595
0: IESG Approval.
1000: RFC Required (or Expert Review if YANG comes from existing RFC).
60000: Reserved for Experimental Use.
100000: RFC Required (or Expert Review if YANG comes from existing RFC).
300000: Reserved.
(Expert: Michel Veillette, Alexander Pelov, Laurent Toutain)
YANG-SID Mega-Ranges
RFC 9595
Expert Review (Expert: Michel Veillette, Alexander Pelov, Laurent Toutain)