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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 | 24,540 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,305 |
| 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.
32,187 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,362 |
| 256 |
| 1 |
| 2 |
| AS398099US | BVFNET - Bay View Funding | 256 | 16 | 2 |
| AS398552US | CISD-ASN - Cleburne Independent School District | 256 | — | 1 |
| AS27135US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 256 | — | 1 |
| AS399829US | MHD-COMMUNICATIONS - MHD Communications | 256 | — | 1 |
| AS400240US | NEEBUNET - NEEBU Networks | 256 | 1 | 2 |
| AS396396US | PEARL-INSURANCE - Pearl and Associates, LTD | 256 | — | 1 |
| AS36636US | PUBLIC1 - First Service Credit Union | 256 | — | 1 |
| AS15077US | MAG-TEK - MAG-TEK, INC. | 256 | — | 1 |
| AS402166US | MANNHEIM-SD83 - Mannheim School District 83 | 256 | — | 1 |
| AS393794US | BRADLEY - Bradley Arant Boult Cummings, LLP | 256 | — | 1 |
| AS401779US | AAROBAND - AaroBand, Inc. | 256 | 4.1K | 2 |
| AS14163US | SHEARMAN - Shearman & Sterling | 256 | — | 1 |
| AS46803US | GTCR-300NL-1 - GTCR Golder Rauner, LLC | 256 | — | 1 |
| AS63193US | AHS - Atlanticare Health System Inc. | 256 | — | 1 |
| AS32998US | MIMCOM - Mimbres Communications, LLC | 256 | — | 1 |
| AS12225US | CONSUMERINFO1 - Consumerinfo.com, Inc. | 256 | — | 1 |
| AS23512US | RGTS-SJ - ConvergeOne Unified Technology Solutions, Inc. | 256 | — | 1 |
| AS25918US | LMHS - Lima Memorial Hospital | 256 | — | 1 |
| AS27487US | FHLBNY-AS - FEDERAL HOME LOAN BANK OF NY | 256 | — | 1 |
| AS400657US | DACOMM - DACOMM Inc. | 256 | — | 1 |
| AS18445US | POLYONE-CORPORATION - PolyOne Corporation | 256 | — | 1 |
| AS11603US | WATERMARK - Watermark Estate Management Services, LLC | 256 | — | 1 |
| AS402473US | RURALNET - Ruralnet | 256 | — | 1 |
| AS397138US | JUSTUS-AS - The Vegetable Group | 256 | 1 | 2 |
| AS399204US | PST - White Iron LLC | 256 | 4.1K | 2 |
| AS399603US | APPSYNERGY - APPSYNERGY INC | 256 | — | 1 |
| AS29937US | BR-01 - Boone REMC | 256 | — | 1 |
| AS394628US | SQUARE-CORP - Square, Inc. | 256 | 65.5K | 4 |
| AS401833US | AXNET-AS - AXNET LLC | 256 | — | 1 |
| AS394553US | SARC-01 - Samsung Austin Research and Development Center | 256 | — | 1 |
| AS400225US | NORDSON-192 - Nordson Corporation | 256 | — | 1 |
| AS401666US | WORLD-GOLF-TOUR - World Golf Tour | 256 | — | 1 |
| AS46080US | ORTHOALLIANCE - OrthoAlliance MSO, LLC | 256 | — | 1 |
| AS400073US | VELOCITY-HOLDINGS-LLC - VCT Holdings LLC | 256 | — | 1 |
| AS214478US | AS-SAKURACLOUDS Sakura Clouds LLC | 256 | 4 | 5 |
| AS25834US | LAYNE-ASN-1 - Layne Christensen Company | 256 | — | 1 |
| AS22559US | GNF-ORG - Genomics Institute of the Novartis Research Foundation | 256 | — | 1 |
| AS400797US | PIC-EXT - Ping Identity Corporation | 256 | 1 | 2 |
| AS397632US | MOHAVEC-COUNTY - Mohave County AZ | 256 | — | 1 |
| AS32128US | ASN-RICHLINE-NY - Richline Group Inc | 256 | — | 1 |
| AS394619US | OANDA-2 - OANDA Corporation | 256 | — | 1 |
| AS397885US | TUSSCO-ASN - Tuscaloosa County Commisssion | 256 | — | 1 |
| AS397495US | TOWNOFOROVALLEY-02 - Town of Oro Valley | 256 | — | 1 |
| AS400895US | SAMSUNG-ELECTRONICS-AMERICA - Samsung Electronics America, Inc. | 256 | — | 1 |
| AS27296US | WU-PRIMARY - Wilmington University, Inc. | 256 | — | 1 |
| AS11219US | GLIDEWELL - James R. Glidewell Dental Ceramics Inc. | 256 | — | 1 |