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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. | 218M | 24,543 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,304 |
| 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.
32,174 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,884 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,999 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,345 |
| VTT - Van Oss Telegraph and Telephone LLC |
| 256 |
| 256 |
| 2 |
| AS401455US | CLEARLINE-COMMUNICATIONS-INC - Clearline Communications, Inc. | 256 | 4.1K | 2 |
| AS12011US | TSD-AS-01 - Thompson School District | 256 | — | 1 |
| AS397322US | FORWARD-THINKING - Forward Thinking Systems LLC | 256 | — | 1 |
| AS393285US | CTPF203 - Chicago Teachers Pension Fund | 256 | — | 1 |
| AS40798US | WALLACE-HARDWARE - Wallace Hardware Co., Inc. | 256 | — | 1 |
| AS206916US | SOUTHWEST-NET Southwest Network Corporation | 256 | — | 1 |
| AS198109US | HCA-AS Horizon Capital Advisors, LLC | 256 | — | 1 |
| AS396042US | NEWSDAY - Newsday Media Group | 256 | — | 1 |
| AS22041US | CED-15-ASN - Comtech EF Data | 256 | — | 1 |
| AS23542US | CWI-FNG-ASN - Florida's Natural Growers, Inc. | 256 | — | 1 |
| AS670US | DNIC-AS-00670 - Headquarters, USAISC | 256 | — | 1 |
| AS395006US | BROOMFIELD-COLORADO - The City and County of Broomfield | 256 | — | 1 |
| AS15012US | TRIOLAB - NextStage Innovations LLC | 256 | — | 1 |
| AS22815US | KELLY-INSURANCE-GROUP - Kelly and Associates Insurance Group | 256 | — | 1 |
| AS43737US | NODESDIRECT Nodes Direct Holdings LLC | 256 | — | 1 |
| AS398498US | BANKOZK-ATL - Bank OZK | 256 | — | 1 |
| AS11362US | VECTOR - Vector Data Systems LLC | 256 | — | 1 |
| AS33200US | JABIL-AS-SILU-PH - Jabil | 256 | — | 1 |
| AS53964US | ADDSYSTEMS - Advanced Digital Data, Inc. | 256 | — | 1 |
| AS393517US | SFDC-TABLEAU - Salesforce, Inc. | 256 | — | 1 |
| AS46631US | CITYOFWHEATON - City of Wheaton | 256 | — | 1 |
| AS36582US | EVMAGDIA-LT-CL - Magnetar Capital LLC | 256 | 1 | 2 |
| AS20389US | 20389 - OneAZ Credit Union | 256 | — | 1 |
| AS36109US | BCL-28205 - Bahakel Communications Ltd. | 256 | — | 1 |
| AS395640US | APSU-ASN - Austin Peay State University | 256 | — | 1 |
| AS397870US | SFI - The Santa Fe Institute | 256 | — | 1 |
| AS1909US | CAIDA - San Diego Supercomputer Center | 256 | 2K | 3 |
| AS395375US | AMC-ASN - Athens Micro | 256 | — | 1 |
| AS399582US | VLL-ASN-01 - Voice Logic, LLC. | 256 | — | 1 |
| AS26489US | ASN-POLUNS - Polunsky & Beitel | 256 | — | 1 |
| AS398921US | OVERDRIVE-ASN-01 - OverDrive, Inc. | 256 | — | 1 |
| AS401666US | WORLD-GOLF-TOUR - World Golf Tour | 256 | — | 1 |
| AS402619US | INTELOC - Inteloc | 256 | 256 | 2 |
| AS400627US | DGH-PUBLIC - Dayton General Hospital | 256 | — | 1 |
| AS26939US | NRNET - NeoRoute Networks LLC | 256 | 4.1K | 2 |
| AS399972US | COMMUNITY-BANK-OF-MS - Community Bank | 256 | — | 1 |
| AS14119US | PNG-WYO - PENN NATIONAL GAMING | 256 | — | 1 |
| AS26519US | ACE-002 - Ace Data Centers II, L.L.C. | 256 | — | 1 |
| AS401970US | CASILA-FLOWER - CASILAFLOWER | 256 | — | 1 |
| AS398707US | PUEBLO-DE-COCHITI-NSN - Pueblo de Cochiti | 256 | 65.5K | 2 |
| AS398245US | TS-AS-1011 - Trithium Solutions LLC | 256 | — | 1 |
| AS33245US | JABIL-AS-SINU-PH - Jabil | 256 | — | 1 |
| AS21943US | ASN-ITG-072618 - International Textile Group, Inc. | 256 | — | 1 |
| AS19543US | MINTZ-BOS - Mintz, Levin, Cohn, Ferris, Glovsky and Popeo, P.C. | 256 | — | 1 |
| AS203888US | USKVM - USKVM LLC | 256 | 16 | 2 |
| AS46857US | 10X-NETWORKS - SSL Wireless, LLC | 256 | 4.1K | 2 |