IANA IPv4 Special-Purpose Address Registry
Created
2009-08-19
Last Updated
2013-03-03
This registry is also available in plain text.
Registry included below
* IANA IPv4 Special Purpose Address Registry
IANA IPv4 Special Purpose Address Registry
Registration Procedure(s)
IETF Review
Reference
[RFC5736][RFC-bonica-special-purpose-07]
Note
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.
| Address Block | Name | RFC | Allocation Date |
| 0.0.0.0/8 | “This” Network | [RFC1122], section 3.2.1.3 | 1981-09 |
| 10.0.0.0/8 | Private-Use | [RFC1918] | 1996-02 |
| 100.64.0.0/10 | Shared Address Space | [RFC6598] | 2012-04 |
| 127.0.0.0/8 | Loopback | [RFC1122], section 3.2.1.3 | 1981-09 |
| 169.254.0.0/16 | Link Local | [RFC3927] | 2005-05 |
| 172.16.0.0/12 | Private-Use | [RFC1918] | 1996-02 |
| 192.0.0.0/24[2] | IETF Protocol Assignments | [RFC-bonica-special-purpose-07], section 2.1 | 2010-01 |
| 192.0.0.0/29 | DS-Lite | [RFC6333] | 2011-06 |
| 192.0.2.0/24 | Documentation (TEST-NET-1) | [RFC5737] | 2010-01 |
| 192.88.99.0/24 | 6to4 Relay Anycast | [RFC3068] | 2001-06 |
| 192.168.0.0/16 | Private-Use | [RFC1918] | 1996-02 |
| 198.18.0.0/15 | Benchmarking | [RFC2544] | 1999-03 |
| 198.51.100.0/24 | Documentation (TEST-NET-2) | [RFC5737] | 2010-01 |
| 203.0.113.0/24 | Documentation (TEST-NET-3) | [RFC5737] | 2010-01 |
| 240.0.0.0/4 | Reserved | [RFC1112], section 4 | 1989-08 |
| 255.255.255.255/32 | Limited Broadcast | [RFC919], section 7 | 1984-10 |
Footnotes
[1] Several protocols have been granted exceptions to this rule. For
examples, see [RFC4379] and [RFC5884].
[2] Not useable unless by virtue of a more specific reservation.