Appendix E. IP Protocol Address Space
Internet Protocol Address Space
The listed address blocks are for "Class A" IP addresses.
Address BlockRegistry - PurposeDate000IANA - ReservedSep 81001IANA -
ReservedSep 81002IANA - ReservedSep 81003General Electric CompanyMay 94004Bolt Beranek and Newman Inc.
Dec 92005IANA - ReservedJul 95006Army Information Systems CenterFeb 94007IANA - ReservedApr 95008
Bolt Beranek and Newman Inc.Dec 92009IBMAug 92010IANA - Private UseJun 95011DoD Intel Information Systems
May 93012AT&T Bell LaboratoriesJun 95013Xerox CorporationSep 91014IANA - Public Data NetworkJun 91015
Hewlett-Packard CompanyJul 94016Digital Equipment CorporationNov 94017Apple Computer Inc.Jul 92018MIT
Jan 94019Ford Motor CompanyMay 95020Computer Sciences CorporationOct 94021DDN-RVNJul 91022
Defense Information Systems AgencyMay 93023IANA - ReservedJul 95024IANA - Cable BlockJul 95025
Royal Signals and Radar EstablishmentJan 95026Defense Information Systems AgencyMay 95027IANA -
ReservedApr 95028DSI-NorthJul 92029Defense Information Systems Agency
Jul 91030Defense Information Systems Agency
Jul 91031IANA - ReservedApr 99032Norsk InformasjonsteknologiJun 94033DLA Systems Automation Center
Jan 91034Halliburton CompanyMar 93035MERIT Computer Network
Apr 94036Stanford UniversityApr 93037IANA - Reserved
Apr 95038Performance Systems InternationalSep 94039IANA - ReservedApr 95040Eli Lily and Company
Jun 94041IANA - ReservedMay 95042IANA - ReservedJul 95043Japan InetJan 91044
Amateur Radio Digital CommunicationsJul 92045Interop Show NetworkJan 95046Bolt Beranek and Newman Inc.
Dec 92047Bell-Northern ResearchJan 91048Prudential Securities Inc.May 95049Joint Technical Command
May 94 Returned to IANA Mar 98050Joint Technical CommandMay 94 Returned to IANA Mar 98051
Deparment of Social Security of UKAug 94052E.I. duPont de Nemours and Co., Inc.Dec 91053Cap Debis
CCSOct 93054Merck and Co., Inc.Mar 92055Boeing Computer ServicesApr 95056U.S. Postal Service
Jun 94057SITAMay 95058IANA - ReservedSep 81059IANA - ReservedSep 81060IANA - Reserved
Sep 81061APNIC - Pacific RimApr 97062RIPE NCC - EuropeApr 97063ARINApr 97064ARIN
Jul 99065-095IANA - ReservedSep 81096-126IANA - ReservedSep 81127IANA - ReservedSep 81128-191
Various Registries May 93192Various Registries - MultiRegionalMay 93193RIPE NCC - EuropeMay 93194RIPE NCC -
EuropeMay 93195RIPE NCC - EuropeMay 93196Various RegistriesMay 93197IANA - Reserved
May 93198Various Registries May 93199ARIN - North America May 93200ARIN - Central and South America
May 93201Reserved - Central and South AmericaMay 93202APNIC - Pacific RimMay 93203APNIC - Pacific Rim
May 93204ARIN - North America Mar 94205ARIN - North America Mar 94206ARIN - North America Apr 95207ARIN -
North America Nov 95208ARIN - North America Apr 96209ARIN - North AmericaJun 96210APNIC -
Pacific RimJun 96211APNIC - Pacific RimJun 96212 RIPE NCC - EuropeOct 97213 RIPE NCC -
Europe Mar 99214US-DODMar 98215US-DOD Mar 98216 ARIN - North AmericaApr 98217
IANA - ReservedSep 81218-223 IANA - ReservedSep 81224-239IANA - MulticastSep 81240-255IANA -
ReservedSep 81