| ::1/128 |
Loopback Address |
[RFC4291] |
2006-02 |
N/A |
False |
False |
False |
False |
True |
| ::/128 |
Unspecified Address |
[RFC4291] |
2006-02 |
N/A |
True |
False |
False |
False |
True |
| ::ffff:0:0/96 |
IPv4-mapped Address |
[RFC4291] |
2006-02 |
N/A |
False |
False |
False |
False |
True |
| 64:ff9b::/96 |
IPv4-IPv6 Translat. |
[RFC6052] |
2010-10 |
N/A |
True |
True |
True |
True |
False |
| 64:ff9b:1::/48 |
IPv4-IPv6 Translat. |
[RFC8215] |
2017-06 |
N/A |
True |
True |
True |
False |
False |
| 100::/64 |
Discard-Only Address Block |
[RFC6666] |
2012-06 |
N/A |
True |
True |
True |
False |
False |
| 100:0:0:1::/64 |
Dummy IPv6 Prefix |
[RFC9780] |
2025-04 |
N/A |
True |
False |
False |
False |
False |
| 2001::/23 |
IETF Protocol Assignments |
[RFC2928] |
2000-09 |
N/A |
False [1] |
False [1] |
False [1] |
False [1] |
False |
| 2001::/32 |
TEREDO |
[RFC4380]
[RFC8190] |
2006-01 |
N/A |
True |
True |
True |
N/A [2] |
False |
| 2001:1::1/128 |
Port Control Protocol Anycast |
[RFC7723] |
2015-10 |
N/A |
True |
True |
True |
True |
False |
| 2001:1::2/128 |
Traversal Using Relays around NAT Anycast |
[RFC8155] |
2017-02 |
N/A |
True |
True |
True |
True |
False |
| 2001:1::3/128 |
DNS-SD Service Registration Protocol Anycast |
[RFC9665] |
2024-04 |
N/A |
True |
True |
True |
True |
False |
| 2001:2::/48 |
Benchmarking |
[RFC5180][RFC Errata 1752] |
2008-04 |
N/A |
True |
True |
True |
False |
False |
| 2001:3::/32 |
AMT |
[RFC7450] |
2014-12 |
N/A |
True |
True |
True |
True |
False |
| 2001:4:112::/48 |
AS112-v6 |
[RFC7535] |
2014-12 |
N/A |
True |
True |
True |
True |
False |
| 2001:10::/28 |
Deprecated (previously ORCHID) |
[RFC4843] |
2007-03 |
2014-03 |
|
|
|
|
|
| 2001:20::/28 |
ORCHIDv2 |
[RFC7343] |
2014-07 |
N/A |
True |
True |
True |
True |
False |
| 2001:30::/28 |
Drone Remote ID Protocol Entity Tags (DETs) Prefix |
[RFC9374] |
2022-12 |
N/A |
True |
True |
True |
True |
False |
| 2001:db8::/32 |
Documentation |
[RFC3849] |
2004-07 |
N/A |
False |
False |
False |
False |
False |
| 2002::/16 [3] |
6to4 |
[RFC3056] |
2001-02 |
N/A |
True |
True |
True |
N/A [3] |
False |
| 2620:4f:8000::/48 |
Direct Delegation AS112 Service |
[RFC7534] |
2011-05 |
N/A |
True |
True |
True |
True |
False |
| 3fff::/20 |
Documentation |
[RFC9637] |
2024-07 |
N/A |
False |
False |
False |
False |
False |
| 5f00::/16 |
Segment Routing (SRv6) SIDs |
[RFC9602] |
2024-04 |
N/A |
True |
True |
True |
False |
False |
| fc00::/7 |
Unique-Local |
[RFC4193]
[RFC8190] |
2005-10 |
N/A |
True |
True |
True |
False [4] |
False |
| fe80::/10 |
Link-Local Unicast |
[RFC4291] |
2006-02 |
N/A |
True |
True |
False |
False |
True |