IPv6 Global Unicast Address Assignments

Last Updated
2014-03-19
Registration Procedure(s)
Allocations to RIRs are made in line with the Global Policy published at [http://www.icann.org/en/resources/policy/global-addressing]. 
All other assignments require IETF Review.
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].
Reference
[RFC-housley-number-registries-04]
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.
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Prefix Designation Date Whois Status Note
2001:0000::/23 IANA 1999-07-01 whois.iana.org ALLOCATED 2001:0000::/23 is reserved for IETF Protocol Assignments [RFC2928]. 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::/12 APNIC 2006-10-03 whois.apnic.net ALLOCATED 2400:0000::/19 was allocated on 2005-05-20. 2400:2000::/19 was allocated on 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::/12 ARIN 2006-10-03 whois.arin.net ALLOCATED 2600:0000::/22, 2604:0000::/22, 2608:0000::/22 and 260c:0000::/22 were 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::/12 RIPE NCC 2006-10-03 whois.ripe.net ALLOCATED 2a00:0000::/21 was originally allocated on 2005-04-19. 2a01:0000::/23 was 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::/16 IANA 2008-04 RESERVED 3ffe:831f::/32 was used for Teredo in some old but widely distributed 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]