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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 | 24,389 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,302 |
| 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.
32,169 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,341 |
| CASTLE-COOKE - Castle & Cooke |
| 1K |
| — |
| 4 |
| AS26448US | CBD - Christian Book Distributors, LLC | 1K | — | 4 |
| AS398383US | WMBB-WMF-7000 - Point Broadband Fiber Holding, LLC | 1K | — | 1 |
| AS14021US | PSECU - Pennsylvania State Employees Credit Union | 1K | — | 4 |
| AS6450US | PIXNET-AS - Providers Internet Exchange | 1K | — | 3 |
| AS46575US | WSSC-AS - Washington Suburban Sanitary Commission | 1K | — | 3 |
| AS47063US | SWITCHSPACE - Switchspace Inc. | 1K | — | 4 |
| AS400104US | TERAEX - Tcloudnet | 1K | — | 2 |
| AS40662US | LAYER7-MITIGATION - Layer7 Technologies Inc | 1K | — | 4 |
| AS11374US | WORKSMART-NETWORK-BACKBONE - Panterra Networks, Inc. | 1K | 3 | 7 |
| AS54411US | ONEGAS-BGP - ONE Gas, Inc. | 1K | — | 4 |
| AS14712US | AS-ONESC - One Step Consulting, Inc. | 1K | — | 1 |
| AS399949US | AS-CYLOGIC - CYLOGIC INC | 1K | — | 1 |
| AS399660US | JANPA-ISP - WWLTH, Inc | 1K | — | 1 |
| AS18660US | KSUONLINE-I2 - Kentucky State University | 1K | — | 1 |
| AS11901US | COSWAN - County of Sacramento | 1K | — | 2 |
| AS395581US | SIMSMM-US-INET - Metal Management, Inc. | 1K | — | 1 |
| AS53893US | EARTHWAVESVCS - Earthwave Services, LLC | 1K | 65.5K | 2 |
| AS398871US | STRIVETECH-WA - StriveTech | 1K | 4.1K | 2 |
| AS31784US | BAINBRIDGE-1 - City of Bainbridge | 1K | 65.5K | 2 |
| AS394923US | ARTFILES-LLC-AS - Artfiles LLC | 1K | 1 | 4 |
| AS62500US | ENL - Edge Networks LLC | 1K | — | 1 |
| AS32138US | NETTEK01 - Nettek LLC | 1K | — | 1 |
| AS397969US | CL-ASN-01 - Cambium Learning, Inc. | 1K | — | 4 |
| AS31837US | LION-BILLERICA - Lionbridge Technologies, Inc. | 1K | — | 4 |
| AS6456US | ALTOPIA - Altopia Corporation | 1K | 1 | 2 |
| AS19321US | UMC-HEALTH-SYSTEM - University Medical Center | 1K | — | 2 |
| AS23441US | JNJMOBILE - JNJ Mobile, Inc. | 1K | — | 1 |
| AS400107US | THE-COLONY-HOA - Homeowners Association for the Colony at White Pine Canyon, + | 1K | — | 4 |
| AS55209US | HACKENSACKUMC - Hackensack University Medical Center | 1K | — | 4 |
| AS1439US | SBISD - Spring Branch Independent School District | 1K | — | 1 |
| AS54021US | FIXFLYER1 - FIX FLYER, LLC | 1K | — | 4 |
| AS40346US | ACADIAN-AMBULANCE-SERVICE - Acadian Ambulance Service, Inc. | 1K | — | 4 |
| AS26329US | INSERVER-NETWORKS - InServer Networks | 1K | 1 | 5 |
| AS32751US | NUCLEARFALLOUT-SEA - Nuclearfallout Enterprises, Inc. | 1K | 4.1K | 5 |
| AS13378US | QINGYE-CLOUD - Qingye Cloud | 1K | 1 | 4 |
| AS27169US | RYAN-AS - Ryan, LLC | 1K | — | 1 |
| AS402304US | CALCAS-PID - California Casualty Management Company | 1K | — | 1 |
| AS19761US | SLEDGE - Sledge Telephone Company | 1K | — | 4 |
| AS969US | MISAKA3 - Misaka Network, Inc. | 1K | 771 | 10 |
| AS401914US | INTERCODING-NET - INTERCODING | 1K | — | 3 |
| AS23444US | TESTAMERICA - TestAmerica Laboratories, Inc. | 1K | — | 4 |
| AS18490US | VTLA - NTT Global Networks Incorporated | 1K | — | 4 |
| AS33046US | WESTERN-FARMERS-ELECTRIC-COOPERATIVE - WESTERN FARMERS ELECTRIC COOPERATIVE | 1K | — | 3 |
| AS399404US | VELCO-SP-NET - Vermont Electric Power Company, Inc. | 1K | — | 1 |
| AS46459US | ADSALARM - Alarm Detection Systems, Inc | 1K | — | 3 |
| AS23200US | CHARTER-23200-INDIANA-C3 - Charter Communications LLC | 1K | 256 | 2 |