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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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.1M | 24,718 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,307 |
| 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.
32,222 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,893 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,007 |
| AS701US | UUNET - Verizon Business | 43.6M | 997 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,395 |
| 512 |
| — |
| 1 |
| AS36139US | INTRIGUECOMM - Intrigue Communications LLC | 512 | — | 2 |
| AS398891US | QUAD9-AS-2 - Quad9 | 512 | 2 | 4 |
| AS26930US | PARALLAX - PureVoltage Hosting Inc. | 512 | — | 2 |
| AS62669US | SANS-INSTITUTE - SANS INSTITUTE | 512 | — | 2 |
| AS399231US | NYC-NET-01 - Setplex | 512 | — | 2 |
| AS47015US | SHH-SJH - Sacred Heart Hospital | 512 | — | 2 |
| AS53752US | USDIGITAL - US Digital | 512 | — | 2 |
| AS401985US | AS-FDML-1 - Family Dollar | 512 | — | 2 |
| AS21592US | MULTIVIEW - Multi-View Inc. | 512 | — | 2 |
| AS399850US | HCINDIANA - Hamilton County | 512 | — | 2 |
| AS33316US | AV-INC - AeroVironment, Inc. | 512 | — | 2 |
| AS397007US | STRATACACHE - Stratacache Inc. | 512 | — | 2 |
| AS393565US | MAXPOINT-INTERACTIVE - Valassis Digital Corp. | 512 | — | 1 |
| AS401824US | CORITAN - Coritan LLC | 512 | — | 2 |
| AS63369US | TANNER-MEDICAL-CENTER - Tanner Medical Center, Inc. | 512 | — | 2 |
| AS40054US | AVATARA-LLC - Avatara LLC | 512 | — | 1 |
| AS53958US | BART-BM - AUPROXIES LLC | 512 | — | 2 |
| AS35850US | SCLS - Suffolk Cooperative Library System | 512 | — | 1 |
| AS401294US | ROOFSOFT - RoofSoft LLC | 512 | — | 2 |
| AS399350US | MCMTSG-ASN-01 - MCM Technology Solutions | 512 | — | 2 |
| AS30425US | UTA-1 - Utah Transit Authority | 512 | — | 1 |
| AS22154US | NUTECH - Nu Tech Software Solutions, Inc. | 512 | — | 1 |
| AS14848US | DOOSAN-INFORMATION-COMMUNICATIONS-AMERICA - DOOSAN INFORMATION AND COMMUNICATIONS AMERICA, LLC | 512 | — | 2 |
| AS20270US | CLEARSKY-SYSTEMS-INC - FIELD COMMUNICATIONS, INC. | 512 | — | 2 |
| AS16548US | EAST-PENN-MANUFACTURING - East Penn Manufacturing | 512 | — | 2 |
| AS968US | PACKETFRAME - Packetframe | 512 | 2 | 4 |
| AS17313US | THECBEGROUP - THE CBE GROUP, INC | 512 | — | 2 |
| AS46142US | BP-1 - BridgePay Network Solutions, LLC | 512 | — | 2 |
| AS55226US | WELLP-10-FRONT1 - Wellpartner, Inc | 512 | — | 2 |
| AS397248US | FRACTALVISION-1 - FractalVision | 512 | 4.1K | 3 |
| AS398412US | WEBER-COUNTY-01 - WEBER COUNTY | 512 | — | 1 |
| AS397989US | COP-CH - City of Portsmouth, Virginia | 512 | — | 2 |
| AS46169US | GTOWN - City of Georgetown | 512 | — | 2 |
| AS393925US | SAMUEL-A-RAMIREZ-AS - Samuel A. Ramirez & Company, Inc | 512 | — | 2 |
| AS63467US | PADI-WW - PADI Worldwide Corp | 512 | — | 2 |
| AS62973US | CATAWBAVALLEYMC - Catawba Valley Medical Center | 512 | — | 2 |
| AS20353US | ADAGE-CAPITAL---ASN - Adage Capital Partners, LLC | 512 | — | 2 |
| AS399996US | QFLIX-INTERNET - QFLIX L.L.C. | 512 | — | 2 |
| AS29919US | 29919 - SELECT PORTFOLIO SERVICING INC | 512 | — | 2 |
| AS19972US | AS19972 - CommScope Technologies LLC. | 512 | — | 2 |
| AS402327US | ANTERIS-SOLUTIONS-INC - Anteris | 512 | — | 2 |
| AS54976US | CONVO-ASH - Convo | 512 | 1 | 3 |
| AS46458US | SAVINGCALL - Saving Call LLC | 512 | — | 2 |
| AS393383US | SISD-ASN - Spring Independent School District | 512 | — | 2 |
| AS55208US | NAVITUS - Navitus Health Solutions, LLC | 512 | — | 2 |
| AS53746US | ASBASN - American Savings Bank, FSB | 512 | — | 2 |