Editing IPv6 (section)

=== Special Prefixes ===

* ::/8
** ::/128 - Unspecified
** ::1/128 - loopback (IPv4 127/8 equivalent)
** ::ffff:0:0/96 - IPv4 mapped addresses
* 2000::/3 - IANA Global Unicast
** 2001::/32 - Teredo (RFC-4380)
** 2001:10::/28 - Orchid (RFC-4843)
** 2002::/16 - 6to4
* FC00::/7 - unique local addresses
** FC00::/8 is to be managed by a so-called "ULA-Central" for assigned /48s. As of 9-2007, this body has yet to be formed.
** FD00::/8 is allocated by appending a randomly-generated 40-bit string, to derive a valid /48. RFC4193 offers a suggestion on how to do the random generation, to try to guarantee a minimum-quality result if the user does not have access to a good source of random numbers.
* FE80::/10 - link-local addresses (169.254/16 equivalent)
* FECO::/10 - site-local (deprecated)
* FF00::/8 - multicast

The remaining prefixes are all reserved for future Unicast allocations.