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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 |
| AS36603US | ARC-INTERNET - AIRLINES REPORTING CORPORATION | 256 | — | 1 |
| AS54815US | TSI-SEMICONDUCTORS - TSI SEMICONDUCTORS | 256 | — | 1 |
| AS400392US | EMPIRE-1 - Empire Resorts, Inc. | 256 | — | 1 |
| AS32378US | HQ-LUMEN-SPECTRUM - OptumServe Health Services, Inc. | 256 | — | 1 |
| AS399695US | MARSHALL-COUNTY-01 - Marshall County | 256 | — | 1 |
| AS402160US | AS-TCMSD-001 - Truth or Consequences Municipal Schools | 256 | 256 | 2 |
| AS400282US | UPX - UPX US LLC | 256 | 65.5K | 3 |
| AS26558US | FREEWHEEL - Freewheel Media Inc. | 256 | — | 1 |
| AS19722US | NFTA - Niagara Frontier Transportation Authority | 256 | — | 1 |
| AS400505US | HARRIS-AS-02 - HARRIS & HARRIS, LTD. | 256 | — | 1 |
| AS397132US | MCCB - MIssissippi Community College Board | 256 | — | 1 |
| AS51844US | HASHT-ENTERPRISE - HashTable, Inc. | 256 | 6 | 7 |
| AS30467US | VONAGE-03 - Vonage Holdings, Inc. | 256 | — | 1 |
| AS402479US | DECENTRA - Decentra | 256 | — | 1 |
| AS53773US | PARACOGAS-ASN - PARACO GAS CORPORATION | 256 | — | 1 |
| AS396474US | ANNEX-FIBER - Annex Fiber Inc. | 256 | 256 | 2 |
| AS133052US | FXCM-ASIA-AS-AP - FX Corporate LLC | 256 | — | 1 |
| AS46565US | COC-AS - City of Columbia | 256 | — | 1 |
| AS401925US | GRAPE-AWS-1 - Grapevine Labs LLC | 256 | — | 1 |
| AS21764US | CFCU-CORP - Clearview Federal Credit Union | 256 | — | 1 |
| AS36862US | AS36862 - Green Mountain Technology, LLC | 256 | — | 1 |
| AS32384US | MILLERWELDSASN01 - MILLER Electric Mfg. Co. | 256 | — | 1 |
| AS210015US | INTERFACEALL Interface Services LLC | 256 | 1 | 2 |
| AS395271US | TBOSA-SAT-HQ - The Bank of San Antonio | 256 | — | 1 |
| AS396840US | SPI-BLOCK-A - Sky Path Inc. | 256 | — | 1 |
| AS401029US | DEIHS-HOST-01 - Deihs Solutions LLC | 256 | 4.1K | 2 |
| AS401684US | RSM22 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS32450US | TESU-WEB - Thomas Edison State University | 256 | — | 1 |
| AS393961US | FBB-INTERNET-ID - Farm Bureau Bank | 256 | — | 1 |
| AS393693US | EA-BOGOTA - Electronic Arts, Inc. | 256 | — | 1 |
| AS55262US | ANTHEMCONNECT-LA2 - Anthem Broadband | 256 | 65.5K | 2 |
| AS399490US | DWS-LTAM-AR - Disney Worldwide Services, Inc. | 256 | — | 1 |
| AS54928US | MSMC-FL - Mount Sinai Medical Center of Florida, Inc. | 256 | — | 1 |
| AS396274US | SVGKC1 - Spring Venture Group LLC | 256 | — | 1 |
| AS63336US | ADVENTIST-HEALTHCARE-MARYLAND - Adventist Healthcare | 256 | — | 1 |
| AS54095US | AUTO-OWNERS - Auto-Owners Insurance Company | 256 | — | 1 |
| AS399406US | AS-BILL360 - Bill360, Inc. | 256 | — | 1 |
| AS398558US | EASTMS-MISSON-01 - East Mississippi Community College | 256 | — | 1 |
| AS26513US | TGS-ASN-01 - TGS-NOPEC Geophysical Company | 256 | — | 1 |
| AS401071US | SEA-BOX - Sea Box, Inc. | 256 | — | 1 |
| AS399344US | DISNEY-TELEVISION-STUDIOS - Disney Worldwide Services, Inc. | 256 | — | 1 |
| AS11936US | MARATHON-CHEESE - Marathon Cheese Corporation | 256 | — | 1 |
| AS46217US | BOLD-MSUMANKATO - Apogee Telecom Inc. | 256 | — | 1 |
| AS54568US | BGIM-ASN-2 - Brandywine Global Investments | 256 | — | 1 |
| AS395607US | CASEYS-CORP - Casey's Retail Company | 256 | — | 1 |
| AS397614US | GTLAKES - Great Lakes Energy Cooperative | 256 | 26 | 12 |