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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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 | 24,630 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 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.
32,219 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 | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 256 |
| — |
| 1 |
| AS2738US | AS-SHIELDS-COM - Shields Health Care Group | 256 | — | 1 |
| AS27137US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS62677US | WFASN - William Floyd Union Free School District | 256 | — | 1 |
| AS394093US | HS-ASN - Hallmark Sweet, INC | 256 | — | 1 |
| AS401209US | AS-PACS-1 - Precision Accounting and Consulting Services, Inc. | 256 | 17 | 3 |
| AS395957US | POLARSEMI - Polar Semiconductor, LLC | 256 | — | 1 |
| AS46769US | TELECAST COMMUNICATIONS - Telecast Communications | 256 | — | 1 |
| AS14582US | DICKINSON-FINANCIAL-CORPORATION - Dickinson Financial Corporation | 256 | — | 1 |
| AS401620US | HOLOCENE ADVISORS LP - Holocene Advisors, LP | 256 | — | 1 |
| AS7761US | AS-350E - Morningstar, Inc. | 256 | — | 1 |
| AS395147US | ODYSSEY-IP - Odyssey Investment Partners, LLC. | 256 | — | 1 |
| AS19944US | GRANITEIX-SERVICES - GraniteIX LLC | 256 | 256 | 2 |
| AS14906US | MAXIM-7227 - Maxim Healthcare Services, Inc. | 256 | — | 1 |
| AS27622US | RSA-AL - Retirement Systems of Alabama | 256 | — | 1 |
| AS27241US | AS-CP01 - Community Products, LLC | 256 | — | 1 |
| AS31787US | MPORTHO - Microport Orthopedics, Inc. | 256 | — | 1 |
| AS31999US | LAKESUMTERSTATECOLLEGE - Lake Sumter State College | 256 | — | 1 |
| AS393590US | HBHGA - The Original Honey Baked Ham Company of Georgia, Inc. | 256 | — | 1 |
| AS402555US | RIKKIA-NETWORK-01 - Rikkia | 256 | 1 | 2 |
| AS202934US | MUNTEANU-AS SINCITY HOSTING LLC | 256 | 3 | 4 |
| AS395615US | COF-EQX-SEA-PP - Capital One Financial Corporation | 256 | — | 1 |
| AS396020US | LAMTEC-ASN - LAMTEC CORPORATION | 256 | — | 1 |
| AS400048US | THDA - THDA | 256 | — | 1 |
| AS397568US | CLEARCORRECT - ClearCorrect | 256 | 2 | 3 |
| AS14531US | LM-ATL - Lockheed Martin Corporation | 256 | — | 1 |
| AS33193US | HEART-OF-THE-ROCKIES - Heart of the Rockies Regional Medical Center | 256 | — | 1 |
| AS400935US | APOG-BEREACOLLEGE - Apogee Telecom Inc. | 256 | — | 1 |
| AS33112US | ACI-BGP - Arch Coal Inc | 256 | — | 1 |
| AS401721US | EVOLUTIONFIBER-US-TX - Evolution Fiber LLC | 256 | 64 | 2 |
| AS13465US | SAMHOUSTONEC - Sam Houston Electric Cooperative, Inc. | 256 | — | 1 |
| AS30242US | SAMSA - SAMSA | 256 | — | 1 |
| AS219050US | TERAFLOW Teraflow LLC | 256 | — | 1 |
| AS4980US | NO - Whole Sale | 256 | — | 1 |
| AS53819US | PICTOMETRY-1 - PICTOMETRY INTERNATIONAL CORP. | 256 | — | 1 |
| AS399798US | NOVANTAS-01 - Novantas, Inc. | 256 | 1 | 2 |
| AS402355US | VISENTRY-NET - Visentry | 256 | — | 1 |
| AS32445US | XHOP - XHOP LLC | 256 | — | 1 |
| AS40451US | ASN-BOP - Board of Pensions of the Evangelical Lutheran Church in America | 256 | — | 1 |
| AS53843US | SEU-MAIN - SOUTHEASTERN UNIVERSITY, INC. | 256 | — | 1 |
| AS26964US | INGRAMBARGE-1 - INGRAM BARGE COMPANY | 256 | — | 1 |
| AS22525US | ATALANTA-SOSNOFF - Atalanta Sosnoff Capital, LLC | 256 | — | 1 |
| AS32594US | AUGUSTINE-GAMING-MANAGEMENT-CORP - AUGUSTINE GAMING MANAGEMENT CORP. | 256 | — | 1 |
| AS402090US | DANIEL - 10990 W. Highlander Rd. LLC | 256 | — | 1 |
| AS1029US | BLACK-MESA-LMN - Black Mesa Corporation | 256 | 2 | 3 |
| AS397815US | NMIH-SWITCH-01 - National Mortgage Insurance Corporation | 256 | — | 1 |
| AS401349US | ZOLL-LIFEVEST - ZOLL Medical Corporation | 256 | 1 | 2 |