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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| NTTA-3936 - NTT America, Inc. |
| — |
| — |
| 0 |
| AS3906US | ADS-1-AS - Advanced Data Systems | — | — | 0 |
| AS3680US | NOVELL - Micro Focus | — | — | 0 |
| AS3990US | UTELFLA - Sprint/United Telephone-Florida | — | — | 0 |
| AS5342US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5289US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5221US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS5250US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | — | — | 0 |
| AS4522US | COMPUCALL - CompuCall Internet Services | — | — | 0 |
| AS4526US | ARMY-FMO - Dod Joint Spectrum Center | — | — | 0 |
| AS4910US | SPRINTNET-NC - Sprint Mid-Atlantic Telecom | — | — | 0 |
| AS5674US | PBI-NET-BLK - AT&T Enterprises, LLC | — | — | 0 |
| AS62657US | NEWREZ-LLC - NewRez LLC | — | — | 0 |
| AS62619US | EZE-CASTLE-SOFTWARE-LLC - Eze Castle Software LLC | — | — | 0 |
| AS55148US | STRIKENETWORKSERVICES - Strike Network Services, LLC | — | — | 0 |
| AS401300US | PUBLIC-ASN-REQUEST - Summit Securities Group LLC | — | — | 0 |
| AS3074US | CITI8 - Citigroup Inc. | — | — | 0 |
| AS3048US | RICE-AS3048 - Rice University | — | — | 0 |
| AS2938US | SPRINT-MRN - U.S. Sprint | — | — | 0 |
| AS3483US | COGENT-3483 - Cogent Communications, LLC | — | — | 0 |
| AS2582US | CDE - California Department of Education | — | — | 0 |
| AS2009US | BT-CLOUD-CONNECT - INFONET Services Corporation | — | — | 0 |
| AS1795US | COGENT-1795 - Cogent Communications, LLC | — | — | 0 |
| AS1450US | DNIC-AS-01450 - Headquarters, USAISC | — | — | 0 |
| AS2741US | DNIC-AS-02741 - United States Department of Defense (DoD) | — | — | 0 |
| AS402112US | TABAR-1 - Tabarruk | — | — | 0 |
| AS401980US | AS-OZKAY - Ozkay LLC | — | — | 0 |
| AS4264US | CERNET-ASN-BLOCK - California Education and Research Federation Network | — | — | 0 |
| AS401804US | MAXWELL - Maxwell Telecom LLC | — | — | 0 |
| AS401603US | AS-THREELANTERNS - Three Lanterns LLC | — | — | 0 |
| AS401278US | ZGOVPS - ZgoShop, Inc. | — | — | 0 |
| AS10711US | RCONNECT - Windstream Communications LLC | — | — | 0 |
| AS400889US | SPARC-GROUP-01 - SPARC Group LLC | — | — | 0 |
| AS400888US | AWS-DIRECT-ASN - Spy Fu, Inc. | — | — | 0 |
| AS402980US | RUNPOD-ASN - Runpod | — | — | 0 |
| AS401090US | SARAPLUS-AZURE-01 - SARA Plus, LLC | — | — | 0 |
| AS402685US | NEBIUS-NA-SOUTH - Nebius | — | — | 0 |
| AS402662US | SEERAPPSASN1 - SeerApps | — | — | 0 |
| AS402275US | AS-BITBOUCHER - BITBOUCHER LLC | — | — | 0 |
| AS402134US | WPP-ET-CAMPUS-MUMBAI - The Ogilvy Group, LLC | — | — | 0 |
| AS402496US | REDDOT-BGP - Red | — | — | 0 |
| AS402507US | NETWORKOLOGY - Networkology | — | — | 0 |
| AS6388US | BELLSOUTH-NET-BLK - AT&T Enterprises, LLC | — | — | 0 |
| AS402861US | SL-AS-1 - StratusLIVE, | — | — | 0 |
| AS6174US | COGENT-6174 - Cogent Communications, LLC | — | — | 0 |
| AS6096US | SYSNET-1 - Sysnet Corp | — | — | 0 |
| AS5919US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | — | — | 0 |