IPv6 Global Unicast Address Assignments Last Updated 2013-02-15 Description The allocation of Internet Protocol version 6 (IPv6) unicast address space is listed here. References to the various other registries detailing the use of the IPv6 address space can be found in the [IPv6 Address Space registry]. Note The assignable Global Unicast Address space is defined in [RFC4291] as being the address block defined by the prefix 2000::/3. All address space in this block not listed in the table below is reserved by IANA for future allocation. This registry is also available in plain text. Prefix Designation Date Whois Status Note 2001:0000::/23 is reserved for IETF Protocol Assignments [RFC2928]. 2001:0000::/23 IANA 1999-07-01 whois.iana.org ALLOCATED 2001:0000::/32 is reserved for TEREDO [RFC4380]. 2001:0002::/48 is reserved for Benchmarking [RFC5180]. 2001:10::/28 is reserved for ORCHID [RFC4843]. For complete registration details, see [IANA registry iana-ipv6-special-registry]. 2001:0200::/23 APNIC 1999-07-01 whois.apnic.net ALLOCATED 2001:0400::/23 ARIN 1999-07-01 whois.arin.net ALLOCATED 2001:0600::/23 RIPE NCC 1999-07-01 whois.ripe.net ALLOCATED 2001:0800::/23 RIPE NCC 2002-05-02 whois.ripe.net ALLOCATED 2001:0a00::/23 RIPE NCC 2002-11-02 whois.ripe.net ALLOCATED 2001:0c00::/23 APNIC 2002-05-02 whois.apnic.net ALLOCATED 2001:db8::/32 reserved for Documentation [RFC3849]. For complete registration details, see [IANA registry iana-ipv6-special-registry]. 2001:0e00::/23 APNIC 2003-01-01 whois.apnic.net ALLOCATED 2001:1200::/23 LACNIC 2002-11-01 whois.lacnic.net ALLOCATED 2001:1400::/23 RIPE NCC 2003-02-01 whois.ripe.net ALLOCATED 2001:1600::/23 RIPE NCC 2003-07-01 whois.ripe.net ALLOCATED 2001:1800::/23 ARIN 2003-04-01 whois.arin.net ALLOCATED 2001:1a00::/23 RIPE NCC 2004-01-01 whois.ripe.net ALLOCATED 2001:1c00::/22 RIPE NCC 2001-05-04 whois.ripe.net ALLOCATED 2001:2000::/20 RIPE NCC 2001-05-04 whois.ripe.net ALLOCATED 2001:3000::/21 RIPE NCC 2001-05-04 whois.ripe.net ALLOCATED 2001:3800::/22 RIPE NCC 2001-05-04 whois.ripe.net ALLOCATED 2001:3c00::/22 IANA RESERVED 2001:3c00::/22 is reserved for possible future allocation to the RIPE NCC. 2001:4000::/23 RIPE NCC 2004-06-11 whois.ripe.net ALLOCATED 2001:4200::/23 AFRINIC 2004-06-01 whois.afrinic.net ALLOCATED 2001:4400::/23 APNIC 2004-06-11 whois.apnic.net ALLOCATED 2001:4600::/23 RIPE NCC 2004-08-17 whois.ripe.net ALLOCATED 2001:4800::/23 ARIN 2004-08-24 whois.arin.net ALLOCATED 2001:4a00::/23 RIPE NCC 2004-10-15 whois.ripe.net ALLOCATED 2001:4c00::/23 RIPE NCC 2004-12-17 whois.ripe.net ALLOCATED 2001:5000::/20 RIPE NCC 2004-09-10 whois.ripe.net ALLOCATED 2001:8000::/19 APNIC 2004-11-30 whois.apnic.net ALLOCATED 2001:a000::/20 APNIC 2004-11-30 whois.apnic.net ALLOCATED 2001:b000::/20 APNIC 2006-03-08 whois.apnic.net ALLOCATED 2002:0000::/16 6to4 2001-02-01 ALLOCATED 2002::/16 is reserved for 6to4 [RFC3056]. For complete registration details, see [IANA registry iana-ipv6-special-registry]. 2003:0000::/18 RIPE NCC 2005-01-12 whois.ripe.net ALLOCATED 2400:0000::/19 was allocated on 2005-05-20. 2400:2000::/19 was allocated on 2400:0000::/12 APNIC 2006-10-03 whois.apnic.net ALLOCATED 2005-07-08. 2400:4000::/21 was allocated on 2005-08-08. 2404:0000::/23 was allocated on 2006-01-19. The more recent allocation (2006-10-03) incorporates all these previous allocations. 2600:0000::/22, 2604:0000::/22, 2608:0000::/22 and 260c:0000::/22 were 2600:0000::/12 ARIN 2006-10-03 whois.arin.net ALLOCATED allocated on 2005-04-19. The more recent allocation (2006-10-03) incorporates all these previous allocations. 2610:0000::/23 ARIN 2005-11-17 whois.arin.net ALLOCATED 2620:0000::/23 ARIN 2006-09-12 whois.arin.net ALLOCATED 2800:0000::/12 LACNIC 2006-10-03 whois.lacnic.net ALLOCATED 2800:0000::/23 was allocated on 2005-11-17. The more recent allocation (2006-10-03) incorporates the previous allocation. 2a00:0000::/21 was originally allocated on 2005-04-19. 2a01:0000::/23 was 2a00:0000::/12 RIPE NCC 2006-10-03 whois.ripe.net ALLOCATED allocated on 2005-07-14. 2a01:0000::/16 (incorporating the 2a01:0000::/23) was allocated on 2005-12-15. The more recent allocation (2006-10-03) incorporates these previous allocations. 2c00:0000::/12 AFRINIC 2006-10-03 whois.afrinic.net ALLOCATED 2d00:0000::/8 IANA 1999-07-01 RESERVED 2e00:0000::/7 IANA 1999-07-01 RESERVED 3000:0000::/4 IANA 1999-07-01 RESERVED 3ffe:831f::/32 was used for Teredo in some old but widely distributed 3ffe::/16 IANA 2008-04 RESERVED networking stacks. This usage is deprecated in favor of 2001::/32, which was allocated for the purpose in [RFC4380]. 3ffe::/16 and 5f00::/8 were used for the 6bone but were returned. [RFC5156] 5f00::/8 IANA 2008-04 RESERVED 3ffe::/16 and 5f00::/8 were used for the 6bone but were returned. [RFC5156]