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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 | 21,149 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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 | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,670 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,953 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,395 |
| 256 |
| — |
| 1 |
| AS26723US | SJCRH - St. Jude Children's Research Hospital | 256 | — | 1 |
| AS40368US | NIXCON-GROUP-LLC - Nixcon | 256 | — | 1 |
| AS401328US | FASTWIRELESSLLC - Fast Wireless LLC | 256 | 1 | 2 |
| AS55207US | IGLOO - June Slater | 256 | 2 | 3 |
| AS400730US | SPARTANBURGCOUNTY-192-146-148-0 - Spartanburg County | 256 | — | 1 |
| AS398226US | HENNIGES-AUTOMOTIVE-NETWORK - Henniges Automotive Holdings, Inc. | 256 | — | 1 |
| AS11813US | NATIXIS-NORTH-AMERICA-LLC - Natixis North America LLC | 256 | — | 1 |
| AS395630US | LCHSASN - Legacy Community Health Services | 256 | — | 1 |
| AS40180US | VRC-NET - van Ryck Communications LLC | 256 | — | 1 |
| AS398702US | SRH-ASN - Scottish Rite Hospital for Children | 256 | — | 1 |
| AS62855US | CMA-MISCNY - Currier, McCabe and Associates, Inc. | 256 | — | 1 |
| AS26720US | SCHAEFFERS-INVESTMENT-RESEARCH - Schaeffer's Investment Research | 256 | — | 1 |
| AS401325US | LOGAN-ALUMINUM - Logan Aluminum Inc. | 256 | — | 1 |
| AS397109US | CPASNET1 - Centerview Partners, LLC | 256 | — | 1 |
| AS394796US | MIDLOTHIAN-01 - City of Midlothian | 256 | — | 1 |
| AS399798US | NOVANTAS-01 - Novantas, Inc. | 256 | 1 | 2 |
| AS20462US | OPULENT-CLOUD - Opulent Cloud | 256 | — | 1 |
| AS53382US | MBFCL - MBF Clearing Corp. | 256 | — | 1 |
| AS398241US | CELLNETIX - CELLNETIX LABS LLC | 256 | — | 1 |
| AS22763US | BGP-DUCKS-INC - DUCKS UNLIMITED, INC. | 256 | — | 1 |
| AS32788US | C75-NETWORKS - Coloblox Data Centers Inc | 256 | — | 1 |
| AS393569US | 9-11-MEMORIAL - 9/11 MEMORIAL | 256 | — | 1 |
| AS399530US | CIR-DC-02 - Cambridge Investment Research, Inc. | 256 | — | 1 |
| AS402019US | JEROME-COUNTY-ID - Jerome County Idaho | 256 | 4.1K | 2 |
| AS16937US | PVS-AS - Penske Vehicle Services, Inc. | 256 | — | 1 |
| AS14305US | AS14305 - Accuray Incorporated | 256 | — | 1 |
| AS4980US | NO - Whole Sale | 256 | — | 1 |
| AS53754US | LCPA-AS - Lincoln Center for the Performing Arts, Inc. | 256 | — | 1 |
| AS393575US | PCSIA-3710 - Professional Computer Solutions, LLC | 256 | 1 | 2 |
| AS54662US | ATFS - OLD REPUBLIC NATIONAL TITLE INSURANCE CO. | 256 | — | 1 |
| AS54754US | AS54754 - OPEXUS | 256 | — | 1 |
| AS276US | OTS-AS-276 - University of Texas System | 256 | — | 1 |
| AS397333US | PETCO-DDC - Petco | 256 | — | 1 |
| AS14272US | MCPC-ASN - MCPc Inc. | 256 | — | 1 |
| AS30034US | VCS-ASN - The Vermont Country Store, Inc. | 256 | — | 1 |
| AS400649US | APOG-UTD - Apogee Telecom Inc. | 256 | — | 1 |
| AS396404US | ANDERSON - Anderson Hospital | 256 | — | 1 |
| AS400605US | FLEETFLO - HCH Transportation Advisors, Inc. | 256 | — | 1 |
| AS395612US | MC-ALA-ORG - Montgomery County Commission | 256 | — | 1 |
| AS401766US | THE-LOT - Studio Lending Group, LLC | 256 | — | 1 |
| AS399661US | INJ-LLC - INJ LLC | 256 | — | 1 |
| AS401986US | COHERENTLY - Coherently Inc | 256 | 65.5K | 2 |
| AS395278US | SERTASIMMONSBEDDING - Serta Simmons Bedding, LLC | 256 | — | 1 |
| AS36652US | KOCHTRUCKING - KOCH TRUCKING | 256 | — | 1 |
| AS21629US | TWR - TWR Tech, LLC | 256 | 3 | 4 |
| AS62510US | NESATX - North East Independent School District | 256 | — | 1 |