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Unclassified

Not enough sources, unclear purpose, or conflicting classifications

ASNs
87,657
69.5% of all ASNs
Routed ASNs
53,981
61.6% of this type
IPv4 addresses
916.2M
26.7% of global
IPv6 /48s
3.59B
29.6% of global

Routing data · Oct 26, 2026, 02:20 UTC

Unclassified ASN ranking

RankASNNameCountry/regionIPv4 addressesIPv6 /48sPrefixes
55451AS2551Level 3 Parent, LLCUnited States000
55452AS2554IDC Frontier Inc.Japan000
55453AS2555Cogent Communications, LLCUnited States000
55454AS2556Cogent Communications, LLCUnited States000
55455AS2557Cogent Communications, LLCUnited States000
55456AS2560IBMUnited States000
55457AS2564Texas General Land OfficeUnited States000
55458AS2565Quantum LoopholeUnited States000
55459AS2566International Symposium on Integrated Network ManagementUnited States000
55460AS2569Spark New Zealand Trading LtdNew Zealand000
55461AS2573QED Systems, Inc.United States000
55462AS2574Teacher Retirement System of TexasUnited States000
55463AS2580California ASSEMBLYUnited States000
55464AS2581U.S. Government Accountability OfficeUnited States000
55465AS2582California Department of EducationUnited States000
55466AS2583——000
55467AS2584Cummins Inc.United States000
55468AS2596TORINO E PIEMONTE EXCHANGE POINTItaly000
55469AS2605CESNETCzechia000
55470AS2616Navy Network Information Center (NNIC)United States000
55471AS2617Navy Network Information Center (NNIC)United States000
55472AS2618Navy Network Information Center (NNIC)United States000
55473AS2619Navy Network Information Center (NNIC)United States000
55474AS2620Navy Network Information Center (NNIC)United States000
55475AS2622United States Department of Defense (DoD)United States000
55476AS2623United States Department of Defense (DoD)United States000
55477AS2624United States Department of Defense (DoD)United States000
55478AS2625United States Department of Defense (DoD)United States000
55479AS2626United States Department of Defense (DoD)United States000
55480AS2627United States Department of Defense (DoD)United States000
55481AS2628United States Department of Defense (DoD)United States000
55482AS2629United States Department of Defense (DoD)United States000
55483AS2630United States Department of Defense (DoD)United States000
55484AS2632United States Department of Defense (DoD)United States000
55485AS2634Verizon BusinessUnited States000
55486AS2638CENTRO DE ADMINISTRACION NIC.NINicaragua000
55487AS2644System Management ARTS, Inc.United States000
55488AS2645The Commnet ProjectUnited States000
55489AS2646Synaptics IncorporatedUnited States000
55490AS2649Cogent Communications, LLCUnited States000
55491AS2651Shared Services CanadaCanada000
55492AS2652Shared Services CanadaCanada000
55493AS2653Shared Services CanadaCanada000
55494AS2654Shared Services CanadaCanada000
55495AS2655Shared Services CanadaCanada000
55496AS2656Shared Services CanadaCanada000
55497AS2657Shared Services CanadaCanada000
55498AS2658Shared Services CanadaCanada000
55499AS2659Shared Services CanadaCanada000
55500AS2660Shared Services CanadaCanada000