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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. | 218M | 24,555 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,354 |
| 512 |
| — |
| 1 |
| AS16573US | SMCC - Santa Monica Community College District | 512 | — | 2 |
| AS53333US | ADISTEC-MIA-TMXO - Adistec Corp | 512 | — | 2 |
| AS46283US | SEARCY-MAIN-CAMPUS - Harding University, Inc. | 512 | — | 2 |
| AS46259US | CTDN-AS - Donor Network West | 512 | — | 2 |
| AS32692US | CHAMINADEUNIV-01 - Chaminade University of Honolulu | 512 | — | 2 |
| AS22048US | WHOLE-FOODS - Whole Foods Market, Inc. | 512 | — | 2 |
| AS26984US | UTL-17-26984 - Universal TelCom LLC | 512 | — | 2 |
| AS12184US | FORRESTER-RESEARCH - Forrester Research | 512 | — | 2 |
| AS399187US | COB-MN-US - City of Bloomington | 512 | — | 2 |
| AS11964US | AWAC-HQ - Air Wisconsin Airlines Corporation | 512 | — | 2 |
| AS206628US | EzriCloud Tianyu-Zhu | 512 | 4 | 6 |
| AS21631US | CHFA-COLORADO - Colorado Housing and Finance Authority | 512 | — | 2 |
| AS11184US | EG-USEAST - EXPEDIA, INC | 512 | — | 2 |
| AS395397US | AMENTUM-ASN - Amentum Services, Inc. | 512 | — | 1 |
| AS398547US | KAT-NET-SERVERS - Kat-Net Servers LLC | 512 | — | 2 |
| AS17278US | IONACOLLEGE - Iona University | 512 | — | 2 |
| AS394450US | MCKINSEY-US-ADP - McKinsey & Company, Inc. | 512 | — | 2 |
| AS30515US | USP - USP | 512 | — | 2 |
| AS30435US | H9K-1 - Hal 9000 LLC | 512 | — | 2 |
| AS33463US | CITIGROUP-GLOBAL-ANYCAST-DNS - Citigroup Inc. | 512 | — | 2 |
| AS54128US | POKEMON-BELLEVUE - The Pokemon Company International, Inc. | 512 | — | 2 |
| AS400458US | FEXTEL-DC - ViciDial Group | 512 | 1 | 3 |
| AS393518US | CLAIMREMEDI-AS - ClaimRemedi, Inc. | 512 | — | 2 |
| AS396135US | AS-WOODMENLIFE-1 - Woodmen of the World Life Insurance Society | 512 | — | 2 |
| AS46971US | FIBXTERNALIP - First Interstate Bank | 512 | — | 2 |
| AS29726US | VONAGE-02 - Vonage Holdings, Inc. | 512 | — | 2 |
| AS400550US | SM-AS - Suburban Marine, Inc. | 512 | 5 | 7 |
| AS394679US | GENERAC - Generac Power Systems, Inc. | 512 | — | 2 |
| AS27434US | DG-FASTCHANNEL - DG | 512 | — | 2 |
| AS36580US | HATV-DC - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS46307US | CENTAURI - Centauri Solutions, LLC | 512 | 2.1K | 8 |
| AS25841US | FUSIONAPPS - Fusionapps, LLC. | 512 | — | 2 |
| AS402786US | HC-COMMACK - Heat | 512 | — | 2 |
| AS402807US | DETSYS-FHCSAT-ANY-1 - Determinate | 512 | 1 | 3 |
| AS18889US | CITY-OF-RUSTON - City of Ruston | 512 | — | 1 |
| AS399121US | CNB-OF-TEXAS - Citizens National Bank of Texas | 512 | — | 2 |
| AS213550US | JONRADEL Jon Radel | 512 | 3 | 5 |
| AS398070US | MESQUITEISD-AS - Mesquite Independent School District | 512 | — | 2 |
| AS30423US | AMEDI-3-ASN1 - Amedisys, Inc. | 512 | — | 2 |
| AS402530US | FELWARE - Felware | 512 | 4.1K | 2 |
| AS398919US | HCBOCC-AS - Hillsborough County Board of Commissioners | 512 | — | 2 |
| AS30009US | FAPS - First American Payment Systems Inc. | 512 | — | 2 |
| AS397957US | EMEA-PUBLIC - HEWLETT PACKARD ENTERPRISE COMPANY | 512 | — | 2 |
| AS20339US | RR-CENTRAL - Rosenthal & Rosenthal Inc. | 512 | — | 2 |
| AS11958US | USABLE - USAble Life | 512 | — | 2 |
| AS14700US | NEXURE-AS14700 - Nexure Solutions LLP | 512 | — | 2 |