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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 | 24,656 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| 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.
32,202 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 | 3,891 |
| 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 |
| AS394935US | CHUCK-RESERVA - Chuck Reserva, Sole Proprietorship | 256 | 64 | 5 |
| AS397487US | RAVENS-ASN - Baltimore Ravens Limited Partnership | 256 | — | 1 |
| AS26624US | MOMEN-5-ATL-LAB - Momentum Telecom, Inc. | 256 | — | 1 |
| AS36038US | SISULINK - sisulink | 256 | — | 1 |
| AS26657US | NEUROPACE-CORPORATE-SITE - Neuropace | 256 | — | 1 |
| AS396236US | MIMOKC - MIMO 5G Internet | 256 | — | 1 |
| AS32486US | CBSBANK - CB&S Bank, Inc. | 256 | — | 1 |
| AS402018US | CONCENTRATE-01 - Concentrate AI, Inc. | 256 | 256 | 2 |
| AS14941US | INTEGRATED-DOCUMENT-SOLUTIONS - Integrated Document Solutions, Inc | 256 | — | 1 |
| AS1025US | VCHS-EDGE-1 - Valor Christian High School | 256 | — | 1 |
| AS399669US | FR-CORP-USS-SURF - Forest River, Inc. | 256 | — | 1 |
| AS402673US | ATOMROUTE-GLOBAL-AS - AtomRoute | 256 | 1 | 2 |
| AS396909US | NMMCC-AS - New Mexico Mutual Casualty Company | 256 | — | 1 |
| AS396415US | COMCAST-MES - Comcast Cable Communications, LLC | 256 | — | 1 |
| AS395721US | BCBSKC - Blue Cross and Blue Shield of Kansas City | 256 | — | 1 |
| AS64251US | MTCCC - Monona Terrace Community and Convention Center | 256 | 1 | 2 |
| AS394444US | ASNJEFFXDC01 - Jefferson Radiology, P.C. | 256 | — | 1 |
| AS402021US | MT-WILSON-OBSERVATORY - Mt. Wilson Observatory | 256 | — | 1 |
| AS394090US | FCGH-AS - Forrest County General Hospital | 256 | — | 1 |
| AS14304US | TSYS-SDC-CIV - Global Payments Inc. | 256 | — | 1 |
| AS399056US | ENTCOLO-01 - Ent Credit Union | 256 | — | 1 |
| AS63078US | ADS-AS1 - A. Duda & Sons, Inc. | 256 | — | 1 |
| AS54104US | INFOO-54104 - InfoObjects Inc. | 256 | — | 1 |
| AS219082US | BOUGH Bough Limited | 256 | 2 | 3 |
| AS395790US | SMECO-ASN - SOUTHERN MARYLAND ELECTRIC COOPERATIVE INC | 256 | — | 1 |
| AS395388US | T4T-NET - int3 Systems, LLC | 256 | 1 | 2 |
| AS395361US | VPAY - StoneEagle Services, Inc. | 256 | 1 | 2 |
| AS32677US | DKMC-BGP-DECATUR-GEORGIA-JUNE2004 - Dekalb Medical Center | 256 | — | 1 |
| AS36065US | MEDIA78-LLC - Media78 LLC | 256 | — | 1 |
| AS398237US | UL-ORACLE-01 - UL LLC | 256 | — | 1 |
| AS402045US | NOCKYRENTAL - NOCKYRENTAL LLC | 256 | — | 1 |
| AS400637US | MO-LAGERS-01 - Missouri Local Government Employees Retirement System | 256 | — | 1 |
| AS401822US | ROCKFORD-CITY-01 - City of Rockford | 256 | — | 1 |
| AS16763US | TIDEWORKS - Tideworks Technology | 256 | — | 1 |
| AS19538US | LUXOR - Luxor | 256 | — | 1 |
| AS22870US | AS22870 - Syniverse Technologies, LLC | 256 | — | 1 |
| AS33344US | PUBLIC-AS - American Petroleum Institute | 256 | — | 1 |
| AS36077US | MEMC-1 - Mitchell Electric Membership Corporation | 256 | 1 | 2 |
| AS396275US | MHSH-GWY-BGP1 - Material Handling Systems, Inc. | 256 | — | 1 |
| AS36613US | TRADER1-CHICAGO - York Business Associates, LLC | 256 | — | 1 |
| AS18544US | NKTR-AS01 - Nektar Therapeutics | 256 | — | 1 |
| AS399592US | IGO-TECHNOLOGY - iGo Technology, Inc. | 256 | — | 1 |
| AS396138US | DKM9-ARIN - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS27517US | RPS-AS - Rochester Public Schools | 256 | — | 1 |
| AS400160US | CITYOFYUMA-NET - City of Yuma | 256 | — | 1 |
| AS401220US | EDGE-CITY - Edgecity 1343 LLC | 256 | — | 1 |