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Unclassified

Not enough sources, unclear purpose, or conflicting classifications

ASNs
87,658
69.5% of all ASNs
Routed ASNs
53,996
61.6% of this type
IPv4 addresses
915.4M
26.7% of global
IPv6 /48s
3.59B
29.0% of global

Routing data · Oct 26, 2026, 16:18 UTC

Unclassified ASN ranking

RankASNNameCountry/regionIPv4 addressesIPv6 /48sPrefixes
54001AS36SRI InternationalUnited States000
54002AS51Headquarters, USAISC (AS51)United States000
54003AS53Northrop Grumman Corporation - Automation Sciences LaboratoryUnited States000
54004AS54Headquarters, USAISC (AS54)United States000
54005AS58Shared Services CanadaCanada000
54006AS61Air Force Systems NetworkingUnited States000
54007AS64MITRE AS64United States000
54008AS66Headquarters, USAISCUnited States000
54009AS67Unisys CorporationUnited States000
54010AS74Shared Services CanadaCanada000
54011AS75Argonne National LaboratoryUnited States000
54012AS76Unisys CorporationUnited States000
54013AS79Los Alamos National LaboratoryUnited States000
54014AS83Headquarters, USAISCUnited States000
54015AS90SUNUnited States000
54016AS94Headquarters, USAISCUnited States000
54017AS96Headquarters, USAISCUnited States000
54018AS99Intel CorporationUnited States000
54019AS107Air Force Systems NetworkingUnited States000
54020AS108Xerox CorporationUnited States000
54021AS110Xerox Advanced Information TechnologyUnited States000
54022AS113Space Communications CompanyUnited States000
54023AS114NTT America, Inc.United States000
54024AS115United States Department of Defense (DoD)United States000
54025AS117Lockheed Austin DivisionUnited States000
54026AS118United States Department of Defense (DoD)United States000
54027AS119American Mathematical SocietyUnited States000
54028AS120The MITRE CorporationUnited States000
54029AS128Advanced Decision SystemsUnited States000
54030AS130Space Communications DivisionUnited States000
54031AS132Air Force Systems NetworkingUnited States000
54032AS133Air Force Systems NetworkingUnited States000
54033AS134Fleet Analysis CenterUnited States000
54034AS135United States Department of Defense (DoD)United States000
54035AS136Air Force Systems NetworkingUnited States000
54036AS139Navy Network Information Center (NNIC)United States000
54037AS140United States Department of Defense (DoD)United States000
54038AS141Navy Network Information Center (NNIC)United States000
54039AS142Headquarters, USAISCUnited States000
54040AS1431881CS/XPCUnited States000
54041AS144Lucent Technologies/Bell LaboratoriesUnited States000
54042AS145Verizon BusinessUnited States000
54043AS146Air Force Systems NetworkingUnited States000
54044AS148Navy Network Information Center (NNIC)United States000
54045AS150United States Department of Defense (DoD)United States000
54046AS152SRI InternationalUnited States000
54047AS154Headquarters, USAISCUnited States000
54048AS163IBMUnited States000
54049AS171Southern Light Rail, Inc.United States000
54050AS172Headquarters, USAISCUnited States000