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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 | 21,129 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,241 |
| 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 | 373 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,664 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,947 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,375 |
| 1K |
| — |
| 3 |
| AS46118US | CELANESE-US - Celanese International Corporation | 1K | — | 3 |
| AS26399US | BROADMOOR - Broadmoor Hotel Inc | 1K | — | 4 |
| AS18560US | LSCO1 - Lamar State College - Orange | 1K | — | 1 |
| AS15324US | BARRACUDA-NETWORKS-INC - Barracuda Networks, Inc. | 1K | — | 4 |
| AS394106US | BEIDEAL - BeIdeal LLC | 1K | 1 | 5 |
| AS229US | MERIT-AS-6 - Merit Network Inc. | 1K | 1 | 3 |
| AS399656US | ETHX-BIZ - ETHX | 1K | — | 1 |
| AS19358US | JBL-ASN - JOHNSON BROTHERS LIQUOR COMPANY | 1K | — | 3 |
| AS63362US | SMULE - Smule Inc. | 1K | — | 3 |
| AS26959US | TRIZETTO-AS - Cognizant Trizetto Software Group, INC. | 1K | — | 4 |
| AS394737US | ANTS-TECHNOLOGY - ANTS-Technology | 1K | — | 4 |
| AS400400US | CLAIR - Clair Global | 1K | 48 | 7 |
| AS33467US | SJRMC-NJ - St. Joseph's Medical Center | 1K | — | 1 |
| AS14195US | CONTEGO-AS - Contego Solutions LLC | 1K | — | 3 |
| AS8232US | GXS-EUROPE GXS International Inc. | 1K | — | 2 |
| AS11501US | VISTAASN - Vista Radiology, P.C. | 1K | — | 3 |
| AS14079US | RTB-ASN-01 - Radio Toolbox, LLC | 1K | 4.1K | 2 |
| AS1089US | ZELLATECH - Zella Technologies, LLC | 1K | 4.1K | 2 |
| AS36564US | SIEMENS-DISW-WIV-B-TAH - Siemens Industry Software Inc. | 1K | 1 | 2 |
| AS16708US | TELCOM-SYSTEMS - Telcom Systems LLC | 1K | — | 1 |
| AS22761US | PSYCHO-SOLUTIONS-LLC - Psycho Solutions LLC | 1K | — | 4 |
| AS1426US | TENSPIRE-NETWORK-1426 - TenSpire Network | 1K | — | 3 |
| AS402148US | TEYVAT-CONTINENT - Teyvat Continent LLC | 1K | — | 1 |
| AS22746US | LCTS - Lincoln County Telephone System, Inc. | 1K | 65.5K | 2 |
| AS30609US | LCPUD - Lewis County PUD | 1K | 65.5K | 2 |
| AS14627US | NOIP-VITAL - Vitalwerks Internet Solutions, LLC | 1K | 16 | 4 |
| AS30344US | 365-HOSTING - 365.hosting | 1K | 256 | 5 |
| AS397384US | LAUNCHVPS - LaunchVPS, LLC | 1K | 4 | 8 |
| AS397432US | FORTWORTH-CITY - City of Fort Worth | 1K | — | 3 |
| AS36823US | MPHC - Martin's Point HealthCare | 1K | — | 2 |
| AS17164US | CENTRACAREHEALTHSYSTEM - CentraCare Health | 1K | — | 4 |
| AS36263US | AWS-EVENTS - Amazon.com, Inc. | 1K | 576 | 10 |
| AS36022US | CHK-OKC - Expand Operating LLC | 1K | — | 1 |
| AS40461US | RFIH-NET5 - Retail Finance International Holdings, Inc. | 1K | — | 3 |
| AS20177US | EMPORIA-STATE-UNIVERSITY - Emporia State University | 1K | — | 2 |
| AS53647US | CARPENTER-TECH - Carpenter Technology Corporation | 1K | — | 4 |
| AS7011US | FRONTIER-AND-CITIZENS - Frontier Communications of America, Inc. | 1K | — | 4 |
| AS393290US | TPGROUP - Teleperformance Group, Inc. | 1K | 18 | 4 |
| AS398450US | CUSTOMCABLE-FISHERISLAND-2020 - Custom Cable LLLP | 1K | — | 1 |
| AS53519US | CMHC-ASN - Central Maine Medical Family | 1K | — | 4 |
| AS401335US | AI-DUDE-RI - Minerdude LLC | 1K | — | 2 |
| AS47100US | WITOPIA-AS1 - WiTopia, Inc. | 1K | — | 1 |
| AS25822US | TU-ASN-01 - Tiffin University | 1K | — | 4 |
| AS5877US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 1K | — | 4 |
| AS25786US | NE-WEST-11 - Newegg.com | 1K | — | 4 |
| AS53933US | TELX-TOR - Telx | 1K | 257 | 3 |