Internet Protocol Address Space
The
allocation of Internet Protocol
version 4 (IPv4) address space
to
various
registries is listed here.
Originally, all the IPv4
address
spaces
was managed directly by the IANA.
Later, parts of the
address
space
were allocated to various other
registries to manage for
particular
purposes or regional areas of
the world.
RFC 1466
documents
most of these allocations.
Address
Block
Registry - Purpose
Date
----------
----------------------------------------------
---------
000/8
IANA
Sep 81
001/8
IANA
Sep 81
002/8
IANA
Sep 81
003/8
General Electric Company
May 94
004/8
Bolt Beranek and Newman
Inc.
Dec 92
005/8
IANA
Jul 95
006/8
Army Information Systems
Center
Feb 94
007/8
IANA
Apr 95
008/8
Bolt Beranek and Newman
Inc.
Dec 92
009/8
IBM
Aug 92
010/8
IANA - Private Use
Jun 95
011/8
DoD Intel Information
Systems
May 93
012/8
AT&T Bell
Laboratories
Jun 95
013/8
Xerox Corporation
Sep 91
014/8
IANA - Public Data
Network
Jun 91
015/8
Hewlett-Packard Company
Jul 94
016/8
Digital Equipment
Corporation
Nov 94
017/8
Apple Computer Inc.
Jul 92
018/8
MIT
Jan 94
019/8
Ford Motor Company
May 95
020/8
Computer Sciences
Corporation
Oct 94
021/8
DDN-RVN
Jul 91
022/8
Defense Information
Systems Agency
May 93
023/8
IANA
Jul 95
024/8
IANA - Cable Block
Jul 95
025/8
Royal Signals and Radar
Establishmen
Jan 95
026/8
Defense Information
Systems Agency
May 95
027/8
IANA
Apr 95
028/8
DSI-North
Jul 92
029/8
Defense Information
Systems Agency
Jul 91
030/8
Defense Information
Systems Agency
Jul 91
031/8
University of California
May 94
032/8
Norsk
Informasjonsteknologi
Jun 94
033/8
DLA Systems Automation
Center
Jan 91
034/8
Halliburton Company
Mar 93
035/8
MERIT Computer Network
Apr 94
036/8
Stanford University
Apr 93
037/8
IANA
Apr 95
038/8
Performance Systems
International
Sep 94
039/8
IANA
Apr 95
040/8
Eli Lily and Company
Jun 94
041/8
IANA
May 95
042/8
IANA
Jul 95
043/8
Japan Inet
Jan 91
044/8
Amateur Radio Digital
Communications
Jul 92
045/8
Interop Show Network
Jan 95
046/8
Bolt Beranek and Newman
Inc.
Dec 92
047/8
Bell-Northern Research
Jan 91
048/8
Prudential Securities
Inc.
May 95
049/8
Joint Technical Command
May 94
Returned to IANA
Mar 98
050/8
Joint Technical Command
May 94
Returned to IANA
Mar 98
051/8
Deparment of Social
Security of UK
Aug 94
052/8
E.I. duPont de Nemours
and Co., Inc.
Dec 91
053/8
Cap Debis CCS
Oct 93
054/8
Merck and Co., Inc.
Mar 92
055/8
Boeing Computer Services
Apr 95
056/8
U.S. Postal Service
Jun 94
057/8
SITA
May 95
058/8
IANA
Sep 81
059/8
IANA
Sep 81
060/8
IANA
Sep 81
061/8
APNIC - Pacific Rim
Apr 97
062/8
RIPE NCC - Europe
Apr 97
063/8
ARIN
Apr 97
064-095/8IANA
- Reserved
Sep 81
096-126/8IANA
- Reserved
Sep 81
127/8
IANA
Sep 81
128-191/8Various
Registries
May 93
192/8
Various Registries -
MultiRegional
May 93
193/8
RIPE NCC - Europe
May 93
194/8
RIPE NCC - Europe
May 93
195/8
RIPE NCC - Europe
May 93
196/8
ARIN - Others
May 93
197/8
ARIN - Others
May 93
198/8
ARIN - North America
May 93
199/8
ARIN - North America
May 93
200/8
ARIN - Central and South
America
May 93
201/8
ARIN - Central and South
America
May 93
202/8
APNIC - Pacific Rim
May 93
203/8
APNIC - Pacific Rim
May 93
204/8
ARIN - North America
Mar 94
205/8
ARIN - North America
Mar 94
206/8
ARIN - North America
Apr 95
207/8
ARIN - North America
Nov 95
208/8
ARIN - North America
Apr 96
209/8
ARIN - North America
Jun 96
210/8
APNIC - Pacific Rim
Jun 96
211/8
APNIC - Pacific Rim
Jun 96
212/8
RIPE NCC - Europe
Oct 97
213/8
IANA - Reserved
Sep 81
214/8
US-DOD
Mar 98
215/8
US-DOD
Mar 98
216/8
ARIN - North America
Apr 98
217/8
IANA - Reserved
Sep 81
218-223/8IANA
- Reserved
Sep 81
224-239/8IANA
- Multicast
Sep 81
240-255/8IANA
- Reserved
Sep 81