2006-01-10 2013-05-01 IETF Review Address prefixes listed in the Special Purpose Address Registry are not guaranteed routability in any particular local or global context.

::1/128

Loopback Address February 2006 N/A False False False False True

::/128

Unspecified Address February 2006 N/A True False False False True

::ffff:0:0/96

IPv4-mapped Address February 2006 N/A False False False False True

64:ff9b::/96

IPv4-IPv6 Translat. October 2010 N/A True True True True False

100::/64

Discard-Only Address Block June 2012 N/A True True True False False

2001::/23

IETF Protocol Assignments September 2000 N/A False False False False False

2001::/32

TEREDO January 2006 N/A True True True False False

2001:2::/48

Benchmarking April 2008 N/A True True True False False

2001:db8::/32

Documentation July 2004 N/A False False False False False

2001:10::/28

ORCHID March 2007 March 2014 False False False False False

2002::/16

6to4 February 2001 N/A True True True N/A False

fc00::/7

Unique-Local October 2005 N/A True True True False False

fe80::/10

Linked-Scoped Unicast February 2006 N/A True True False False True Unless allowed by a more specific allocation. See for details.