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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
APNIC-measured end-user deployment.
Clean prefixes (valid RPKI + IRR, no mismatch).
Cumulative IPv4, IPv6, and ASN allocations to United States over time.
The largest autonomous systems registered to United States by IPv4 footprint.
| AS | Holder | IPv4 | Prefixes |
|---|---|---|---|
| AS749US | DNIC-AS-00749 - United States Department of Defense (DoD) | 227.7M | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,163 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,244 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) |
United States against its land-border neighbours on IPv4, IPv6, AS numbers and per-capita density.
Share of announced address space covered by valid Route Origin Authorizations.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 228 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 396 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,707 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,953 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,418 |
| — |
| — |
| 0 |
| AS1550US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | — | — | 0 |
| AS1592US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | — | — | 0 |
| AS1597US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | — | — | 0 |
| AS1655US | DNIC-AS-01655 - Navy Network Information Center (NNIC) | — | — | 0 |
| AS1666US | VFN-MEMBERS - Verizon Business | — | — | 0 |
| AS1686US | ANS-1686-AS - Verizon Business | — | — | 0 |
| AS1728US | SRI-TPA-GW1 - SRI-TPA-gw1 | — | — | 0 |
| AS1868US | DISN-PILOTNET14 - RTX BBN Technologies, Inc. | — | — | 0 |
| AS1918US | DNIC-AS-01918 - United States Department of Defense (DoD) | — | — | 0 |
| AS1997US | IBMDES-AS - IBM | — | — | 0 |
| AS2001US | AS-NALCO-MPLS - Ecolab, Inc. | — | — | 0 |
| AS2035US | NGIS-AS3 - Northrop Grumman Corp. | — | — | 0 |
| AS2052US | RJRNI-NFGI - Nabisco Foods Group | — | — | 0 |
| AS2156US | HPINC - HP Inc. | — | — | 0 |
| AS2382US | WISCNET2-AS - WiscNet | — | — | 0 |
| AS2700US | CLARIS-CORP - Claris International Inc. | — | — | 0 |
| AS2733US | ADDREX - Addrex, Inc | — | — | 0 |
| AS2745US | DNIC-AS-02745 - United States Department of Defense (DoD) | — | — | 0 |
| AS2887US | RRM-ASN - Ford Motor Company | — | — | 0 |
| AS2893US | CLI-NET - Computational Logic, Inc. | — | — | 0 |
| AS2911US | CITI4 - Citigroup Inc. | — | — | 0 |
| AS2916US | CYBER-AS - Creative Cybernetics | — | — | 0 |
| AS2935US | CDOLNET-GOV - Connecticut Department of Labor | — | — | 0 |
| AS2965US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2972US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2974US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2978US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2987US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS2990US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3004US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3008US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3016US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3046US | RICE-AS3046 - Rice University | — | — | 0 |
| AS3053US | RICE-AS3053 - Rice University | — | — | 0 |
| AS3075US | CITI9 - Citigroup Inc. | — | — | 0 |
| AS3153US | FEMANET - Federal Emergency Management Agency | — | — | 0 |
| AS3438US | ESNET-AS - ESnet | — | — | 0 |
| AS3463US | LOGIN-NONAZ - Login, Inc. | — | — | 0 |
| AS3468US | DNIC-AS-03468 - United States Department of Defense (DoD) | — | — | 0 |
| AS3505US | WINDSTREAM - Windstream Communications LLC | — | — | 0 |
| AS3612US | DELL-BLK - Dell, Inc. | — | — | 0 |
| AS3619US | MCIASN-BLK - Verizon Business | — | — | 0 |
| AS3638US | GLOBALI - Shaman Exchange, Inc. | — | — | 0 |
| AS3656US | CITYPHX1 - City of Phoenix | — | — | 0 |
| AS3664US | DNIC-ASBLK-03664-03667 - United States Department of Defense (DoD) | — | — | 0 |
| AS3761US | UTOPIA-FIBER-IT - UTOPIA | — | — | 0 |