IANA IPv6 Special-Purpose Address Registry

 

IANA IPv6 Special-Purpose Address Registry

Address Block  Name  RFC  Allocation Date  Termination Date  Source  Destination  Forwardable  Globally Reachable  Reserved-by-Protocol 
::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
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 Address [RFC-ietf-dnssd-srp-25] 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 [RFC-ietf-6man-sids-06] 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

Footnotes

[1] 
Unless allowed by a more specific allocation.
[2] 
See Section 5 of [RFC4380] for details.
[3] 
See [RFC3056] for details.
[4] 
See [RFC4193] for more details on the routability of Unique-Local addresses.  The Unique-Local prefix is 
drawn from the IPv6 Global Unicast Address range, but is specified as not globally routed.
Handig, IPv6