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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 |
| AS19417US | CENTR-65-ASN - Centra-Larm Monitoring, Inc. | 256 | — | 1 |
| AS30364US | TANMA - TanMar Communications, LLC | 256 | — | 1 |
| AS399920US | DAYNET-01 - Dayton | 256 | 4.1K | 2 |
| AS395070US | ALLSOUTH-INTERNET - AllSouth Federal Credit Union | 256 | — | 1 |
| AS396261US | UNIVERSITY-OF-KENTUCKY-RESEARCH-COMPUTING - University of Kentucky Research Computing | 256 | — | 1 |
| AS394966US | DFCU - Direct Federal Credit Union | 256 | — | 1 |
| AS47082US | BSKB-FC-AS - Birch, Stewart, Kolasch & Birch, LLP | 256 | — | 1 |
| AS54689US | UC-WILLIAMSBURG-ASN - University of the Cumberlands | 256 | — | 1 |
| AS29855US | SGCORP29855 - Scientific Games, LLC | 256 | — | 1 |
| AS401227US | JOULEWORKS - Jouleworks | 256 | 259 | 5 |
| AS16865US | SKYLINE - Skyline Security | 256 | 16 | 2 |
| AS11959US | T-CENTER - AEG | 256 | — | 1 |
| AS40094US | SOUTHCENTRAL-FOUNDATION-01 - Southcentral Foundation | 256 | — | 1 |
| AS18720US | PACSUN - Pacific Sunwear of California | 256 | — | 1 |
| AS54558US | HONL-621 - Healthcare Outsourcing Network, L.L.C | 256 | — | 1 |
| AS394549US | GEMAHS01 - GEMA/HS | 256 | — | 1 |
| AS21745US | USFOOD1 - US FOODS, INC. | 256 | — | 1 |
| AS22796US | CCC-HART - Campus Crusade for Christ, Inc. | 256 | 1 | 2 |
| AS400861US | 0X7C0 - 0x7c0 Labs LLC | 256 | 2 | 3 |
| AS32749US | POTPOURRI-GROUP-INC - Potpourri Group Inc | 256 | — | 1 |
| AS13915US | RIA-AS - Radiology Imaging Associates P.C. | 256 | — | 1 |
| AS398372US | MINETWORKS - MINetworks, Inc. | 256 | — | 1 |
| AS395999US | KIM-199-120-191-0 - Kimball International, Inc. | 256 | — | 1 |
| AS32928US | ITECHTOOL-ASN-LAH - ITechTool Incorporated | 256 | — | 1 |
| AS32847US | LMGINC-ORL - LMG, Inc | 256 | — | 1 |
| AS40234US | RAPIDPARTS - Rapidparts, Inc. | 256 | — | 1 |
| AS11089US | ERGON-NETWORK - ERGON | 256 | — | 1 |
| AS401748US | ASRINFOPRO-LLC - ASR INFOPRO LLC | 256 | — | 1 |
| AS216102US | XeroGroup_LLC XeroGroup LLC | 256 | — | 1 |
| AS33630US | WCSR - WOMBLE CARLYLE SANDRIDGE & RICE, LLP | 256 | — | 1 |
| AS401510US | IMG-ACADEMY - IMG Academy, LLC | 256 | 256 | 2 |
| AS30477US | SHO - Shorenstein Realty Services | 256 | — | 1 |
| AS398443US | NWCC - Northwest Mississippi Community College | 256 | — | 1 |
| AS5632US | GORDONCOLLEGE - Gordon College | 256 | — | 1 |
| AS7213US | MASONCOMPANIESINC - Mason Companies, Inc. | 256 | — | 1 |
| AS27214US | INSITU-AS - Insitu, Inc | 256 | — | 1 |
| AS395618US | QUEENS-HEALTH-SYSTEM - The Queen's Medical Center | 256 | — | 1 |
| AS394108US | GMS-AS394108 - Gypsum Management and Supply, Inc. | 256 | — | 1 |
| AS12060US | NAPCFL - NAP OF CENTRAL FLORIDA, INC | 256 | — | 1 |
| AS62546US | FRISCOTXISD - Frisco Independent School District | 256 | — | 1 |
| AS20078US | PIM-ASN - Pzena Investment Management, L.L.C. | 256 | — | 1 |
| AS20402US | LL-942-20402 - LEDVANCE | 256 | — | 1 |
| AS23439US | KQED-ORG - KQED Inc. | 256 | — | 1 |
| AS40868US | FCEC-ASN - Fannin County Electric Cooperative, Inc. | 256 | — | 1 |
| AS395933US | YRMC-AS - Dignity Health, Yavapai Regional Medical Center | 256 | — | 1 |
| AS398184US | HIGHSCORE-ASN-1 - Highscore, Inc | 256 | — | 1 |