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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) | 227.7M | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 256 |
| — |
| 1 |
| AS16505US | HTF-FREDERICK - HTF | 256 | — | 1 |
| AS5733US | MONRO-1 - Monroe County | 256 | — | 1 |
| AS399634US | CC-VISA-01 - Cardinal Commerce Corporation | 256 | — | 1 |
| AS395585US | WAUSAUSUPPLYCOMPANY - Wausau Supply Co. | 256 | 1 | 2 |
| AS40323US | VAFB - Virginia Farm Bureau Mutual Insurance Company | 256 | — | 1 |
| AS399694US | BRTNBB-TX01 - BRIGHTON BROADBAND INC. | 256 | 65.5K | 2 |
| AS399613US | SMESTADTECH-01 - Smestad Tech LLC | 256 | 3 | 3 |
| AS401623US | OMNISSA-ATL - Omnissa, LLC | 256 | 1 | 2 |
| AS397815US | NMIH-SWITCH-01 - National Mortgage Insurance Corporation | 256 | — | 1 |
| AS46677US | CAROLINA-AIRLINK - Carolina Airlink | 256 | 256 | 2 |
| AS393498US | LUNAR-CORE - Moonlesshosting | 256 | — | 1 |
| AS39335US | igloo22225 June Slater | 256 | 256 | 2 |
| AS400920US | GRABIEN - Grabien Inc. | 256 | — | 1 |
| AS40234US | RAPIDPARTS - Rapidparts, Inc. | 256 | — | 1 |
| AS13852US | AS-PCI-01 - Peppermill Casinos, Inc. | 256 | — | 1 |
| AS395144US | INDY-ASN-01 - Independent Connections LLC | 256 | — | 1 |
| AS398214US | PHP-ASN - Prominence Health Plan | 256 | — | 1 |
| AS396907US | XANTERRA - XANTERRA Inc. | 256 | — | 1 |
| AS199897US | Turknet Vexta Data Solutions LLC | 256 | — | 1 |
| AS13715US | USL-ASN - Upsher-Smith Laboratories Inc. | 256 | — | 1 |
| AS62933US | SMC-AS - Statewide Central Station | 256 | — | 1 |
| AS26172US | CREDIT-INDUSTRIEL-ET-COMMERCIAL - Credit Industriel Et Commercial | 256 | — | 1 |
| AS25642US | SPIDERHOST - The Frohman Group Inc. | 256 | — | 1 |
| AS397595US | MTAPD-LIC - MTAPD | 256 | 2 | 3 |
| AS401971US | CITY-OF-JOHNS-CREEK-GA - City of Johns Creek | 256 | — | 1 |
| AS11688US | LTSTREAM - Lightstream Communications, Inc. | 256 | — | 1 |
| AS401566US | MONTVIRIDIAN-01 - Montviridian LLC | 256 | 4.1K | 2 |
| AS16660US | COF-EQX-SJN-PP - Capital One Financial Corporation | 256 | — | 1 |
| AS396934US | KOLLMORGEN - Kollmorgen Corporation | 256 | — | 1 |
| AS396377US | FASTCLOUD - fastCLOUD | 256 | — | 1 |
| AS395936US | ASN-ROVHIL - Rust-Oleum Corporation | 256 | — | 1 |
| AS399866US | COBASO-NET - Cobaso, LLC. | 256 | 3 | 4 |
| AS398366US | LINKUP - Linkup Communications Corporation | 256 | — | 1 |
| AS33100US | DHR-INTERNATIONAL - DHR INTERNATIONAL | 256 | — | 1 |
| AS400006US | DIGITAL-MONKS-01 - DigitalMonks LLC | 256 | 65.5K | 2 |
| AS463US | AFCONC-BLOCK1-AS - Air Force Systems Networking | 256 | — | 1 |
| AS2723US | ENDURANCE - ENDURANCE REINSURANCE CORPORATION OF AMERICA | 256 | — | 1 |
| AS13465US | SAMHOUSTONEC - Sam Houston Electric Cooperative, Inc. | 256 | — | 1 |
| AS397154US | GRANULES-CONSUMER-HEALTH-NET - Granules Consumer Health | 256 | — | 1 |
| AS32847US | LMGINC-ORL - LMG, Inc | 256 | — | 1 |
| AS20420US | DV - Digital Ventures, LLC | 256 | 2 | 3 |
| AS402445US | USGC - U.S. | 256 | 256 | 2 |
| AS20131US | MCFARLANDCLINIC - McFarland Clinic PC | 256 | — | 1 |
| AS399232US | SETON-HOME - Seton Home Study School | 256 | — | 1 |
| AS30611US | COMPASS-ROSE-LLC - Compass Rose Asset Management, LP | 256 | — | 1 |
| AS15329US | DENO - Deno | 256 | 1 | 2 |