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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 | 3,135 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,289 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,267 |
| 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 |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 413 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,731 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,972 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,335 |
| — |
| — |
| 0 |
| AS3001US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3013US | SPRINT-MRN-BLOCK - U.S. Sprint | — | — | 0 |
| AS3150US | NTTA-3150 - NTT America, Inc. | — | — | 0 |
| AS3416US | DNIC-AS-03416 - United States Department of Defense (DoD) | — | — | 0 |
| AS3429US | ESNET-AS - ESnet | — | — | 0 |
| AS3500US | BLACK-STAR - Black Star Publishing Co. Inc. | — | — | 0 |
| AS3501US | ES-USDA - USDA | — | — | 0 |
| AS3509US | NET-CALPUC - California Public Utilities Commission | — | — | 0 |
| AS3524US | DSI-WR - RTX BBN Technologies, Inc. | — | — | 0 |
| AS3528US | DNIC-AS-03528 - United States Department of Defense (DoD) | — | — | 0 |
| AS3587US | TWA - American Airlines Incorporated | — | — | 0 |
| AS3588US | EVERGREEN-AS - Evergreen Internet Express | — | — | 0 |
| AS3589US | DIALCORP - The Dial Corp | — | — | 0 |
| AS3637US | ASN-NWNEXUS2 - Northwest Nexus Inc. | — | — | 0 |
| AS3650US | COGENT-3650 - Cogent Communications, LLC | — | — | 0 |
| AS3668US | GNP-DCN - AT&T Network Systems | — | — | 0 |
| AS3806US | SCOOP - Sacramento County Office of Education | — | — | 0 |
| AS3829US | METROBBS - Metropolis BBS | — | — | 0 |
| AS3868US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS3898US | UCSF-HISD - University of Calif. S.F. - Hospital Info Sys | — | — | 0 |
| AS3975US | AMSC - Automated Medical Systems Consultants Inc. | — | — | 0 |
| AS3977US | UTELFLA - Sprint/United Telephone-Florida | — | — | 0 |
| AS4079US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4082US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4116US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4125US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4139US | INTERSRV - InterServe Communications | — | — | 0 |
| AS4152US | USDA-1 - USDA | — | — | 0 |
| AS4164US | TIN-1 - Air Force Systems Networking | — | — | 0 |
| AS4204US | ALLWARE-AS - Allware | — | — | 0 |
| AS4216US | DNIC-ASBLK-04214-04221 - United States Department of Defense (DoD) | — | — | 0 |
| AS4239US | ATCW-AS - Verizon Business | — | — | 0 |
| AS4275US | CLIPPER - ACC Data Systems | — | — | 0 |
| AS4294US | CENTURYLINK-QC-MOE-ST-CLOUD - CenturyLink Communications, LLC | — | — | 0 |
| AS4303US | DNIC-AS-04303 - United States Department of Defense (DoD) | — | — | 0 |
| AS4308US | TEZCAT-ASN - Tezcatlipoca Inc. | — | — | 0 |
| AS4326US | TNTONLINE - TNT Online, Inc. | — | — | 0 |
| AS4329US | DNIC-ASBLK-04328-04351 - Headquarters, USAISC | — | — | 0 |
| AS4330US | DNIC-ASBLK-04328-04351 - Headquarters, USAISC | — | — | 0 |
| AS4357US | PHASE4-RO - Phase IV Systems, Inc. | — | — | 0 |
| AS4389US | DSERVE-ASN - DataServe LTD | — | — | 0 |
| AS4483US | EMTF-SPANG - Air Force Systems Networking | — | — | 0 |
| AS4523US | OPENTEXT-NA-US-BROOKPARK-1 - GXS | — | — | 0 |
| AS4529US | RIS-NET - Lane County | — | — | 0 |
| AS4548US | AG - Access Global Information Services | — | — | 0 |
| AS4570US | IH2000 - IH2000 | — | — | 0 |