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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 | 23,661 |
| 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 |
| 236 |
| 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 | 4,490 |
| 512 |
| — |
| 2 |
| AS401577US | STRATA-ASN-01 - StrataCare Solutions LLC | 512 | — | 2 |
| AS22083US | MEMORIAL-HEALTH-CARE - Memorial Health Care System | 512 | — | 2 |
| AS22196US | NEULION - NeuLion, Inc. | 512 | — | 2 |
| AS54017US | UCARE-MN - UCare Minnesota | 512 | — | 2 |
| AS33060US | THEPCU-AS-THE-POLICE-CREDIT-UNION - SFPCU | 512 | — | 2 |
| AS26930US | PARALLAX - PureVoltage Hosting Inc. | 512 | — | 2 |
| AS36139US | INTRIGUECOMM - Intrigue Communications LLC | 512 | — | 2 |
| AS18254US | KLAY-AS-AP - KLAYER LLC | 512 | — | 1 |
| AS397263US | TECHLOQ-US - Techloq Limited | 512 | 512 | 4 |
| AS27025US | EDR-AS - Environmental Data Resources, Inc. | 512 | — | 2 |
| AS399326US | SPE-COOP-MS - Southern Pine Electric Cooperative | 512 | — | 1 |
| AS397900US | FIRSTDAY - FirstDay Foundation | 512 | — | 2 |
| AS398555US | CONCOR-2-398555 - Concordia University Nebraska | 512 | — | 2 |
| AS16986US | CSM-AS - City of Santa Monica | 512 | — | 2 |
| AS40054US | AVATARA-LLC - Avatara LLC | 512 | — | 1 |
| AS396483US | NRIM - Northrim Bancorp, Inc. | 512 | — | 2 |
| AS20359US | PREFERREDMUTUALINSURANCECOMPANY - Preferred Mutual Insurance Company | 512 | — | 2 |
| AS14848US | DOOSAN-INFORMATION-COMMUNICATIONS-AMERICA - DOOSAN INFORMATION AND COMMUNICATIONS AMERICA, LLC | 512 | — | 2 |
| AS398004US | TGNA-KSFM - TEGNA Inc. | 512 | — | 2 |
| AS14696US | GU-LFTC - GLOBALFOUNDRIES U.S. Inc. | 512 | — | 1 |
| AS26969US | ACE-002 - Ace Data Centers II, L.L.C. | 512 | — | 1 |
| AS398942US | PZNET - Pueblo of Zia | 512 | 4.1K | 3 |
| AS399046US | DRPA-ASN-01 - The Delaware River Port Authority | 512 | — | 2 |
| AS26966US | SPRAY-AS - Spraying Systems Co. | 512 | — | 2 |
| AS6318US | CHECKFREE - Fiserv Solutions, LLC | 512 | — | 2 |
| AS25861US | TOGGLE FIRE NETWORKS - Toggle Fire Networks | 512 | 1 | 2 |
| AS399936US | PBX-SALTLAKECITY - PBXIO LLC | 512 | 4.1K | 3 |
| AS4889US | USPSOIG-AS2 - United States Postal Service Office of Inspector General | 512 | — | 1 |
| AS399341US | CD - Campaign Deputy | 512 | 16 | 3 |
| AS397248US | FRACTALVISION-1 - FractalVision | 512 | 4.1K | 3 |
| AS399350US | MCMTSG-ASN-01 - MCM Technology Solutions | 512 | — | 2 |
| AS53562US | DRIVETIME - DriveTime | 512 | — | 2 |
| AS400493US | APEXA-AS - APEX Analytix, LLC | 512 | — | 2 |
| AS36106US | MANAGEDNODES - Managed Nodes LLC | 512 | — | 1 |
| AS46142US | BP-1 - BridgePay Network Solutions, LLC | 512 | — | 2 |
| AS54431US | LUNAVI-DEN - Lunavi, Inc. | 512 | — | 1 |
| AS32837US | WCL-50-AS - Williams & Connolly, LLP | 512 | — | 2 |
| AS1974US | MEHEALTH-SOUTH - Southern Maine Medical Center | 512 | — | 2 |
| AS63357US | APOG-BSC - Apogee Telecom Inc. | 512 | — | 2 |
| AS53940US | TMH-14-HQ - Tallahassee Memorial HealthCare Inc. | 512 | — | 2 |
| AS26287US | NBER-AS - National Bureau of Economic Research, Inc. | 512 | — | 1 |
| AS399094US | MTE - MIDDLE TENNESSEE ELECTRIC MEMBERSHIP CORPORATION (THE) | 512 | — | 2 |
| AS399707US | EA-ORLANDO - Electronic Arts, Inc. | 512 | — | 2 |
| AS400862US | CCH1-IPV4-01 - Castle & Cooke Hawaii | 512 | — | 2 |
| AS401294US | ROOFSOFT - RoofSoft LLC | 512 | — | 2 |
| AS394467US | WEXINC-AOC - WEX INC | 512 | — | 2 |