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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
002/8 IANA
003/8 General Electric Company
004/8 Bolt Beranek and Newman Inc.
005/8 IANA
006/8 Army Information Systems Center
007/8 IANA
008/8 Bolt Beranek and Newman Inc.
009/8 IBM
010/8 IANA - Private Use
011/8 DoD Intel Information Systems
012/8 AT&T Bell Laboratories
013/8 Xerox Corporation
014/8 Public Data Network
015/8 Hewlett-Packard Company
016/8 Digital Equipment Corporation
017/8 Apple Computer Inc.
018/8 MIT
019/8 Ford Motor Company
020/8 Computer Sciences Corporation
021/8 DDN-RVN
022/8 Defense Information Systems Agency
023/8 BBN Systems and Technologies
024/8 IANA
025/8 Royal Signals and Radar Establishment
026/8 Defense Information Systems Agency
027/8 IANA
028/8 DSI-North
029/8 Defense Information Systems Agency
030/8 Defense Information Systems Agency
031/8 University of California
032/8 Norsk Informasjonsteknologi
033/8 DLA Systems Automation Center
034/8 Halliburton Company
035/8 MERIT Computer Network
036/8 Stanford University
037/8 IANA
038/8 Performance Systems International
039/8 IANA
040/8 Eli Lily and Company
041/8 IANA
061/8 APNIC - Pacific Rim Apr 97
062/8 RIPE NCC - Europe Apr 97
063/8 ARIN Apr 97
064-095/8 IANA - Reserved Sep 81
096-126/8 IANA - Reserved Sep 81
127/8 IANA Sep 81
128-191/8 Various Registries May 93
192-193/8 Various Registries - MultiRegional May 93
194-195/8 RIPE NCC - Europe May 93
196-197/8 Internic - Others May 93
198-199/8 Internic - North America May 93
200-201/8 Internic - Central and South America May 93
202-203/8 APNIC - Pacific Rim May 93
204-205/8 Internic - North America Mar 94
206/8 Internic - North America Apr 95
207/8 Internic - North America Nov 95
208/8 Internic - North America Apr 96
209/8 Internic - North America Jun 96
210/8 APNIC - Pacific Rim Jun 96
211/8 APNIC - Pacific Rim Jun 96
212-223/8 IANA - Reserved Sep 81
224-239/8 IANA - Multicast Sep 81
240-255/8 IANA - Reserved Sep 81
[]
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