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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 | 24,645 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 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.
32,220 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 | 3,890 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,364 |
| 256 |
| — |
| 1 |
| AS399882US | WORKPLACEOPTIONS-ASN-01 - WORKPLACE OPTIONS, LLC | 256 | — | 1 |
| AS393683US | CURRYCOLLEGE - Curry College | 256 | — | 1 |
| AS214388US | Cloudnet-Technologies-LLC Cloudnet Technologies L.L.C. | 256 | — | 1 |
| AS62570US | TUFTS-MEDICAL-CENTER-BOSTON - Tufts Medical Center Inc. | 256 | — | 1 |
| AS399876US | IEHP-AT - Inland Empire Health Plan | 256 | — | 1 |
| AS36739US | COLLIER-COUNTY-GOVERNMENT-BCC - Collier County Government | 256 | — | 1 |
| AS395550US | PHPC-ASN - PARTNERSHIP HEALTHPLAN OF CALIFORNIA | 256 | — | 1 |
| AS30460US | HOLMESCC - Holmes Community College | 256 | — | 1 |
| AS22856US | NUSOCLOUD-CT - NUSO | 256 | — | 1 |
| AS401728US | FCFCU - First Commonwealth Federal Credit Union | 256 | 1 | 2 |
| AS32684US | ARIENS - Ariens Company | 256 | — | 1 |
| AS394365US | HOLCOMBE-CIRCUIT - S & K TV Systems, Inc. | 256 | — | 1 |
| AS399751US | CNTYRCKHM - County of Rockingham | 256 | — | 1 |
| AS399849US | BIZZARROAGENCY - BIZZARRO AGENCY LLC | 256 | — | 1 |
| AS399653US | CCAA-AS-2021 - Charleston County Aviation Authority | 256 | — | 1 |
| AS402591US | CYBERHAND-01 - CyberHand, | 256 | 256 | 2 |
| AS54356US | GENENSIS-SYSTEMS-LLC - GENESIS SYSTEMS, INC. | 256 | — | 1 |
| AS40541US | CCS-ASN - Central Credit Services Inc | 256 | — | 1 |
| AS400930US | SIGI - Sigi World | 256 | 64 | 2 |
| AS402201US | NISHNANET - Technically Awesome, LLC | 256 | 65.5K | 2 |
| AS394550US | SFCOMPUTE - San Francisco Compute Company | 256 | 1 | 2 |
| AS19831US | STAMPIN - StampinUp | 256 | — | 1 |
| AS402249US | BOLD-UWM-HED - Apogee Telecom Inc. | 256 | — | 1 |
| AS394398US | CFSMI-HQ - Client Financial Services of Michigan, LLC | 256 | — | 1 |
| AS400567US | CHRISTIAN-CARE-MINISTRIES - Christian Care Ministries, Inc. | 256 | — | 1 |
| AS39949US | CITYOFVANCOUVER-US - City Of Vancouver | 256 | — | 1 |
| AS50414US | CodeBGP-Monitor ThousandEyes LLC | 256 | 3 | 4 |
| AS395428US | ELMHURST-AS - Elmhurst University | 256 | — | 1 |
| AS397801US | ENT-KM2 - KM2 Solutions, LLC | 256 | — | 1 |
| AS53317US | WAKEMED - WakeMed | 256 | — | 1 |
| AS393412US | MONOTYPE-HQ - Monotype Imaging Inc | 256 | — | 1 |
| AS6618US | JOHNS-122 - Johns Hopkins HealthCare | 256 | — | 1 |
| AS400037US | TVT-01 - Tamarack Resort | 256 | — | 1 |
| AS23401US | US-TOOL-GRINDING - US Tool Group | 256 | — | 1 |
| AS19584US | DATACAMO-LOSANGELES - Datacamo, Inc. | 256 | — | 1 |
| AS53945US | PHL-INT - Hangley Aronchick Segal & Pudlin | 256 | — | 1 |
| AS396494US | AS-CITY-OF-ROCKVILLE-MARYLAND - Mayor and Council of Rockville | 256 | — | 1 |
| AS397149US | SDSU-SNAPDRAGON - San Diego State University | 256 | — | 1 |
| AS35858US | ATMOS-ENERGY - ATMOS ENERGY CORP | 256 | — | 1 |
| AS395583US | BETHSS - M&D Wholesale Distributors Inc. | 256 | — | 1 |
| AS397813US | CLARKE-MULTIHOME-IP-BLOCK - Clarke Broadcasting Corporation | 256 | — | 1 |
| AS60632US | HDIGR Sniperhill Internet services LLC | 256 | — | 1 |
| AS394118US | VSSMEDICAL-CT-01 - Sigmund Software, LLC | 256 | 1 | 2 |
| AS395422US | OAKLAWNRACINGANDGAMING - OAKLAWN JOCKEY CLUB, INC. | 256 | — | 1 |
| AS33071US | ISC-F-AS - Internet Systems Consortium, Inc. | 256 | 1 | 2 |
| AS1622US | NCHAS - NCH Capital Inc. | 256 | — | 1 |