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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. | 218M | 24,632 |
| 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.
32,210 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 | 4,359 |
| 256 |
| — |
| 1 |
| AS397796US | GRMC-SC1 - Gila Regional Medical Center | 256 | — | 1 |
| AS19857US | BEFCORP - Bob Evans Farms, Inc. | 256 | — | 1 |
| AS46855US | WHYFLY - WhyFly | 256 | — | 1 |
| AS400068US | LION-TECHNOLOGY-570 - LION TECHNOLOGY INC | 256 | — | 1 |
| AS32031US | BVUSD229 - BLUE VALLEY USD NO 229 | 256 | 1 | 2 |
| AS396093US | BRS-AS-124 - Big River Steel, LLC | 256 | — | 1 |
| AS397314US | WPMALONE - Allcare Pharmacy | 256 | — | 1 |
| AS22941US | AS-NOCMGT-01 - The HelpDesk Inc | 256 | — | 1 |
| AS63465US | SW24-MOON - Securewatch24, LLC | 256 | — | 1 |
| AS31778US | CASCADE-MEDICAL-IMAGING - Cascade Medical Imaging | 256 | — | 1 |
| AS401021US | FASTPIX - FastPix Inc. | 256 | — | 1 |
| AS397817US | STMC - Southern Tennessee Regional Health System Winchester | 256 | — | 1 |
| AS396400US | OLATHE-KS - City of Olathe | 256 | — | 1 |
| AS62548US | NORWICH-PUBLIC-UTILITIES - City of Norwich Department of Public Utilities | 256 | — | 1 |
| AS22137US | BCW - Blood Center of Wisconsin, Inc. | 256 | — | 1 |
| AS400949US | AOTW - Angel of the Winds Casino | 256 | — | 1 |
| AS33344US | PUBLIC-AS - American Petroleum Institute | 256 | — | 1 |
| AS214732US | RATATOSKR RATATOSKR LLC | 256 | 3 | 4 |
| AS393542US | PLATEAU-GROUP - The Plateau Group, Inc. | 256 | — | 1 |
| AS402515US | PROTOTYPAL - Prototypal, | 256 | 256 | 2 |
| AS13423US | GALVESTONISD - GALVESTON ISD | 256 | — | 1 |
| AS1055US | CITY-OF-MANTECA-CALIFORNIA - City of Manteca | 256 | — | 1 |
| AS30301US | INTRUST-WICHITA - INTRUST Bank, N.A. | 256 | — | 1 |
| AS30262US | PTT-AS - High 5 Games, LLC | 256 | — | 1 |
| AS2886US | AS2886 - Anton Kapela, Sole Proprietorship | 256 | — | 1 |
| AS394709US | HE-AS1 - HealthEdge Software, Inc. | 256 | — | 1 |
| AS397567US | ALERA-GROUP - Alera Group, Inc | 256 | — | 1 |
| AS397603US | SAHA-AS - Satellite Affordable Housing Associates | 256 | — | 1 |
| AS26645US | ODECASN - Old Dominion Electric Cooperative | 256 | — | 1 |
| AS400851US | SEPHORA-US-SF - Sephora USA Inc. | 256 | — | 1 |
| AS46697US | ACNR-01 - American Consolidated Natural Resources, Inc. | 256 | — | 1 |
| AS36357US | AS36357 - EnTrust Global | 256 | — | 1 |
| AS18636US | ONDRYA - ONDRYA LLC | 256 | 33 | 4 |
| AS398222US | CITY-OF-WPB - City of West Palm Beach | 256 | 1 | 2 |
| AS36553US | BALTIMORE-CITY-POLICE-DEPARTMENT - Baltimore City Police Department | 256 | — | 1 |
| AS54450US | MBLOX-US - MBLOX INC. | 256 | — | 1 |
| AS53500US | WIDOJ - Wisconsin Department of Justice | 256 | — | 1 |
| AS29926US | CARROLL-COUNTY-SCHOOLS - Carroll County Board of Education | 256 | — | 1 |
| AS567US | ASN-LNET-AS - Los Nettos | 256 | — | 1 |
| AS25603US | NATIONWIDE-MUTUAL-INSURANCE-COMPANY - Nationwide Mutual Insurance Company | 256 | — | 1 |
| AS396433US | COMMUNITY-MEDICAL-CENTER - Community Medical Center, Inc | 256 | — | 1 |
| AS401950US | BUNDLE-BONE - IPNSIG INC. | 256 | 256 | 2 |
| AS400973US | AIK-159 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS16763US | TIDEWORKS - Tideworks Technology | 256 | — | 1 |
| AS13869US | TEAM-AIR-EXPRESS - Team Worldwide | 256 | 1 | 2 |
| AS26261US | E2CNET - E Squared C Inc. | 256 | — | 1 |