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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 | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,220 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| 256 |
| — |
| 1 |
| AS14766US | UKMAGDIA-BT-LUM - Magnetar Capital LLC | 256 | 1 | 2 |
| AS21986US | WPP-ET-CAMPUS-WASHINGTONDC - Young & Rubicam LLC | 256 | — | 1 |
| AS25633US | DATAMATX-ATL - DATAMATX INC | 256 | — | 1 |
| AS396192US | SJTA - South Jersey Transportation Authority | 256 | — | 1 |
| AS1315US | IPFS - Imperial PFS | 256 | — | 1 |
| AS46733US | X6CNET - x6c | 256 | 7 | 8 |
| AS33693US | AS-TIERP-33693 - TierPoint, LLC | 256 | — | 1 |
| AS55207US | IGLOO - June Slater | 256 | 2 | 3 |
| AS401114US | COLUMBIACOUNTYWI - Columbia County | 256 | — | 1 |
| AS46287US | SML-ASN - Stonehenge Management, LLC | 256 | — | 1 |
| AS949US | XTOM - xTom | 256 | 256 | 2 |
| AS16770US | ASTGEN - Astoria Generating Company, L.P. | 256 | — | 1 |
| AS33493US | HUDSON-VALLEY-FEDERAL-CREDIT-UNION - Hudson Valley Federal Credit Union | 256 | — | 1 |
| AS399810US | LAER-AS-AMS1 - UnitedLayer, LLC | 256 | 1 | 2 |
| AS18893US | SELECT-EQUITY - Select Equity Group, Inc. | 256 | — | 1 |
| AS396148US | DADDARIO - D'Addario & Company Inc. | 256 | — | 1 |
| AS400027US | ECH-01 - Earlychildhood LLC | 256 | — | 1 |
| AS14531US | LM-ATL - Lockheed Martin Corporation | 256 | — | 1 |
| AS26098US | GAA - Greensboro Auto Auction | 256 | — | 1 |
| AS40180US | VRC-NET - van Ryck Communications LLC | 256 | — | 1 |
| AS11688US | LTSTREAM - Lightstream Communications, Inc. | 256 | — | 1 |
| AS36602US | WESTWOODONE - Dial Global | 256 | — | 1 |
| AS402433US | HG-ITS-AS2 - Hourglass | 256 | — | 1 |
| AS32466US | HSMC-STOWE-VT - HOME SECURITY AND MANAGEMENT CO. | 256 | — | 1 |
| AS14617US | SELMED-2 - Select Medical Corporation | 256 | — | 1 |
| AS40868US | FCEC-ASN - Fannin County Electric Cooperative, Inc. | 256 | — | 1 |
| AS401748US | ASRINFOPRO-LLC - ASR INFOPRO LLC | 256 | — | 1 |
| AS30281US | WASHPOST - Washington Post | 256 | — | 1 |
| AS18458US | NYBG - The New York Botanical Garden | 256 | — | 1 |
| AS399235US | UPLINK-INTERNET - Uplink L.L.C. | 256 | 256 | 2 |
| AS398714US | PCHC-SPECTRUM-ATT - Asset Protection Management II L.L.C. | 256 | — | 1 |
| AS400688US | DNET-464 - Daniel Marks, Sole Proprietorship | 256 | 2 | 2 |
| AS401971US | CITY-OF-JOHNS-CREEK-GA - City of Johns Creek | 256 | — | 1 |
| AS394096US | CAPEREGIONALHEALTHSYSTEM - Cape Regional Medical Center, Inc. | 256 | — | 1 |
| AS14272US | MCPC-ASN - MCPc Inc. | 256 | — | 1 |
| AS33431US | MLS-NET-01 - Major League Soccer | 256 | — | 1 |
| AS54599US | COMMUNITYAMERICA - CommunityAmerica Credit Union | 256 | — | 1 |
| AS394242US | NEIGLOBAL - NEI Global Relocation Company | 256 | — | 1 |
| AS399664US | EIS-ASN-01 - Eclipse Integrated Systems, Inc | 256 | — | 1 |
| AS402397US | 17SOLUTIONS-LLC - 17 | 256 | 1 | 2 |
| AS4980US | NO - Whole Sale | 256 | — | 1 |
| AS33630US | WCSR - WOMBLE CARLYLE SANDRIDGE & RICE, LLP | 256 | — | 1 |
| AS399881US | WIFICARIBE - WiFi Services Caribbean, Inc. | 256 | 65.5K | 2 |
| AS402957US | COOPER - Cooper | 256 | — | 1 |
| AS397276US | FL-NINTHCIRCUIT - Ninth Judicial Circuit Court of Florida | 256 | — | 1 |
| AS14930US | ALLANT-GROUP - The Allant Group, Inc. | 256 | — | 1 |