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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 |
| AS395056US | AS395056 - PLS Financial Services, Inc. | 256 | — | 1 |
| AS63011US | RCG-ASN - RIMKUS CONSULTING GROUP, INC | 256 | — | 1 |
| AS19569US | STAB-AS-001 - STABILUS | 256 | — | 1 |
| AS26515US | CFM-CFMPD - City of Fort Myers | 256 | — | 1 |
| AS40693US | AS-CVMC-CENTRAL-VERMONT-MEDICAL-CENTER - Central Vermont Medical Center | 256 | — | 1 |
| AS26018US | QAWOLF-ASN-01 - QA WOLF, INC. | 256 | — | 1 |
| AS14344US | AHEAD - AHEAD | 256 | — | 1 |
| AS40747US | HSINYIPTELTD-AS-AP - Hsin Yi Pte Ltd | 256 | — | 1 |
| AS40958US | KJ6FAF-LUHR-01 - Milpa Nativa Inc. | 256 | — | 1 |
| AS396235US | TODFL - Town of Davie | 256 | — | 1 |
| AS219384US | SATCORE Satcore LLC | 256 | — | 1 |
| AS400290US | NATURAL-STATE - Natural State Wireless, LLC | 256 | — | 1 |
| AS393799US | ODESSA-TX - City of Odessa | 256 | — | 1 |
| AS400772US | CWCU-AS - Commonwealth Credit Union | 256 | — | 1 |
| AS400924US | MACPAPERS-ASN-01 - Mac Papers, LLC | 256 | — | 1 |
| AS397786US | ASPEN-SMART-NETWORKS - Aspen Wireless Technologies Inc | 256 | 65.5K | 2 |
| AS397158US | RCS-CO-LO-BGP - Resurgent Capital Services LP | 256 | — | 1 |
| AS19525US | 3E-COMPANY - 3E COMPANY ENVIRONMENTAL, ECOLOGICAL AND ENGINEERING | 256 | — | 1 |
| AS399849US | BIZZARROAGENCY - BIZZARRO AGENCY LLC | 256 | — | 1 |
| AS20138US | CTHS-ASN-20138 - Carson Tahoe Health System | 256 | — | 1 |
| AS46651US | OMD3 - Optimized Micro Devices LLC | 256 | — | 1 |
| AS21752US | ACPHLA - Albany County Pine Hills Land Authority | 256 | 256 | 2 |
| AS62636US | ISD273-1 - Edina Public Schools | 256 | — | 1 |
| AS394216US | PUEBLOCOUNTY - Pueblo County Government | 256 | — | 1 |
| AS33009US | TKFAST - TkFast Inc | 256 | — | 1 |
| AS402585US | DIGITAINO-LLC - Digitaino | 256 | 2 | 3 |
| AS46904US | WEITZ-LUX - Weitz & Luxenberg P.C | 256 | — | 1 |
| AS86US | DXC-AS86 - DXC US Latin America Corporation | 256 | 193 | 14 |
| AS18977US | WIKTEL-VOICE - Wikstrom Telephone Company, Incorporated | 256 | — | 1 |
| AS19048US | PEERLESS-PRODUCTS - PEERLESS PRODUCTS, INC. | 256 | — | 1 |
| AS395422US | OAKLAWNRACINGANDGAMING - OAKLAWN JOCKEY CLUB, INC. | 256 | — | 1 |
| AS214022US | VIRTNET Joseph Rawlings trading as Virtnet.bond | 256 | 263 | 6 |
| AS394240US | AS1666 - City of Walnut Creek | 256 | — | 1 |
| AS53915US | SEI - SECURITY EQUIPMENT INC | 256 | — | 1 |
| AS402398US | CPAP - cpap.com | 256 | — | 1 |
| AS401555US | BLOCKCAST-CDN-01 - Blockcast Inc. | 256 | 1 | 2 |
| AS394145US | SCEFCU - SCE Federal Credit Union | 256 | — | 1 |
| AS25944US | OCP-AS-01 - Society of Young Enterprise Engineers Ltd. | 256 | 16 | 2 |
| AS3730US | AQUINA-001 - Aquinas College | 256 | — | 1 |
| AS397789US | SELCO-ASN-01 - SELCO Community Credit Union | 256 | — | 1 |
| AS398926US | SCCC-01 - St. Charles Community College | 256 | — | 1 |
| AS398917US | VIBRANT-CREDIT-UNION-01 - Vibrant Credit Union | 256 | — | 1 |
| AS399504US | STREAMING-SYSTEMS-LLC - Streaming Systems, LLC | 256 | 4.1K | 2 |
| AS54124US | TRAVELINC-NSC - TRAVEL INCORPORATED | 256 | — | 1 |
| AS402356US | AS-GRIDPRISE-ANY - Gridprise | 256 | 1 | 2 |
| AS399328US | ALLCOM-TELECOM-AIRCOM - Allcom Telecom, Inc. | 256 | — | 1 |