IPv6 Prefix,Allocation,Reference,Notes
::/8,Reserved by IETF,[RFC3513][RFC4291],"This range has been partially allocated. See [IANA registry iana-ipv6-special-registry] for details. ::/96, formerly defined as the ""IPv4-compatible IPv6 address"" prefix, was deprecated by [RFC4291]."
100::/8,Reserved by IETF,[RFC3513][RFC4291],This range has been partially allocated. See [IANA registry iana-ipv6-special-registry] for details.
200::/7,Reserved by IETF,[RFC4048],Deprecated as of December 2004 [RFC4048]. Formerly an OSI NSAP-mapped prefix set [RFC4548].
400::/6,Reserved by IETF,[RFC3513][RFC4291],
800::/5,Reserved by IETF,[RFC3513][RFC4291],
1000::/4,Reserved by IETF,[RFC3513][RFC4291],
2000::/3,Global Unicast,[RFC3513][RFC4291],"The IPv6 Unicast space encompasses the entire IPv6 address range 
with the exception of ff00::/8, per [RFC4291]. IANA unicast address 
assignments are currently limited to the IPv6 unicast address 
range of 2000::/3. IANA assignments from this block are registered 
in [IANA registry ipv6-unicast-address-assignments]."
4000::/3,Reserved by IETF,[RFC3513][RFC4291],"This range has been partially allocated. See [IANA registry iana-ipv6-special-registry] for details. 5f00::/8 (with 3ffe::/16, as noted at [IANA registry ipv6-unicast-address-assignments]) was used for the 6bone, but returned [RFC5156]."
6000::/3,Reserved by IETF,[RFC3513][RFC4291],
8000::/3,Reserved by IETF,[RFC3513][RFC4291],
a000::/3,Reserved by IETF,[RFC3513][RFC4291],
c000::/3,Reserved by IETF,[RFC3513][RFC4291],
e000::/4,Reserved by IETF,[RFC3513][RFC4291],
f000::/5,Reserved by IETF,[RFC3513][RFC4291],
f800::/6,Reserved by IETF,[RFC3513][RFC4291],
fc00::/7,Unique Local Unicast,[RFC4193],See [IANA registry iana-ipv6-special-registry] for details.
fe00::/9,Reserved by IETF,[RFC3513][RFC4291],
fe80::/10,Link-Scoped Unicast,[RFC3513][RFC4291],See [IANA registry iana-ipv6-special-registry] for details.
fec0::/10,Reserved by IETF,[RFC3879],Deprecated by [RFC3879] in September 2004. Formerly a Site-Local scoped address prefix.
ff00::/8,Multicast,[RFC3513][RFC4291],See [IANA registry ipv6-multicast-addresses] for details.