IANA IPv4 Special-Purpose Address Registry

IANA IPv4 Special-Purpose Address Registry 2009-08-19 2013-05-01 IANA IPv4 Special Purpose Address Registry IETF Review The IETF has reserved the address block of 192.0.0.0/24 for use for special purposes relating to protocol assignments. This registry contains the current assignments made by the IETF from this address block. Address prefixes listed in the Special Purpose Address Registry are not guaranteed routability in any particular local or global context.

0.0.0.0/8

"This host on this network" , section 3.2.1.3 September 1981 N/A True False False False True

10.0.0.0/8

Private-Use February 1996 N/A True True True False False

100.64.0.0/10

Shared Address Space April 2012 N/A True True True False False

127.0.0.0/8

Loopback , section 3.2.1.3 September 1981 N/A False False False False True

169.254.0.0/16

Link Local May 2005 N/A True True False False True

172.16.0.0/12

Private-Use February 1996 N/A True True True False False

192.0.0.0/24

IETF Protocol Assignments , section 2.1 January 2010 N/A False False False False False

192.0.0.0/29

DS-Lite June 2011 N/A True True True False False

192.0.2.0/24

Documentation (TEST-NET-1) January 2010 N/A False False False False False

192.88.99.0/24

6to4 Relay Anycast June 2001 N/A True True True True False

192.168.0.0/16

Private-Use February 1996 N/A True True True False False

198.18.0.0/15

Benchmarking March 1999 N/A True True True False False

198.51.100.0/24

Documentation (TEST-NET-2) January 2010 N/A False False False False False

203.0.113.0/24

Documentation (TEST-NET-3) January 2010 N/A False False False False False

240.0.0.0/4

Reserved , section 4 August 1989 N/A False False False False True

255.255.255.255/32

Limited Broadcast , section 7 October 1984 N/A False True False False False Several protocols have been granted exceptions to this rule. For examples, see and . Not useable unless by virtue of a more specific reservation.