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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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 | 24,543 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,304 |
| 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.
32,174 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 | 3,884 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,999 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,345 |
| 256 |
| — |
| 1 |
| AS213007US | Puget-Sound-Networks-Lab Puget Sound Networks, LLC | 256 | 1 | 2 |
| AS32920US | ITHAKA-AS32920 - ITHAKA Harbors, Inc. | 256 | — | 1 |
| AS400895US | SAMSUNG-ELECTRONICS-AMERICA - Samsung Electronics America, Inc. | 256 | — | 1 |
| AS394628US | SQUARE-CORP - Square, Inc. | 256 | 65.5K | 4 |
| AS4466US | EASYLINK2 - AT&T Enterprises, LLC | 256 | 1 | 2 |
| AS394890US | DEW-AS - Dewpoint Inc | 256 | — | 1 |
| AS401255US | NORTHWEST-TOWERS-01 - Northwest Towers | 256 | — | 1 |
| AS62854US | CBI1925 - Cheney Bros, Inc. | 256 | — | 1 |
| AS22574US | COCONET - CocoNet Corporation | 256 | — | 1 |
| AS397918US | ADIDAS-AMERICA - adidas America, Inc. | 256 | — | 1 |
| AS393919US | DR - BIDS Trading L.P. | 256 | — | 1 |
| AS55250US | IQVIA-KIRKLAND - IQVIA Holdings Inc | 256 | — | 1 |
| AS396051US | PABOE - Perth Amboy Board of Education | 256 | — | 1 |
| AS12195US | RFXVI-01 - RFX Inc | 256 | — | 1 |
| AS40572US | SEA-DC - Pemco Mutual Insurance Company | 256 | — | 1 |
| AS62863US | AS62863 - PRAIRIECARE LLC | 256 | — | 1 |
| AS62583US | CTMGMT - CT Management, Inc. | 256 | — | 1 |
| AS395408US | SBLI-MA - SBLI | 256 | — | 1 |
| AS64241US | WOBSCALE - Wobscale Technologies, LLC | 256 | 3 | 4 |
| AS54172US | PAYROC WORLDACCESS LLC - Payroc WorldAccess, LLC | 256 | 2 | 3 |
| AS18436US | MSPD-ASN - Mohegan Sun Pocono Downs | 256 | — | 1 |
| AS2031US | AWWASN - American Water Works Company Inc. | 256 | — | 1 |
| AS400904US | KEY-MANAGEMENT - Key Investment | 256 | — | 1 |
| AS25918US | LMHS - Lima Memorial Hospital | 256 | — | 1 |
| AS405US | AFCONC-BLOCK1-AS - Air Force Systems Networking | 256 | — | 1 |
| AS22339US | UDBQ-1 - University of Dubuque | 256 | 258 | 4 |
| AS399927US | IMOUNTAIN-ASN1 - IMountain LLC | 256 | — | 1 |
| AS398543US | CN-ASN-TRILIGHT-SPECTRUM - Carson-Newman University | 256 | — | 1 |
| AS397638US | MLHS - Mille Lacs Health System | 256 | — | 1 |
| AS36636US | PUBLIC1 - First Service Credit Union | 256 | — | 1 |
| AS36115US | AS-DCPA - Denver Center for the Performing Arts | 256 | — | 1 |
| AS399829US | MHD-COMMUNICATIONS - MHD Communications | 256 | — | 1 |
| AS23161US | PHOTOSHELTER-LON - PhotoShelter, Inc. | 256 | 1 | 2 |
| AS397906US | JUVILEX - JUVILEX | 256 | — | 1 |
| AS393901US | TYLERTECH-NIC3 - Tyler Technologies, Inc. | 256 | — | 1 |
| AS40646US | FRUL-1-40646 - FiberOptics R US | 256 | — | 1 |
| AS19865US | ICARZ - Icarz, Inc | 256 | — | 1 |
| AS400505US | HARRIS-AS-02 - HARRIS & HARRIS, LTD. | 256 | — | 1 |
| AS673US | DNIC-AS-00673 - Headquarters, USAISC | 256 | — | 1 |
| AS395676US | L40-WAN - Clark Associates, Inc. | 256 | 1 | 2 |
| AS396980US | API-EGVDC-01 - Absolute Performance, Inc. | 256 | — | 1 |
| AS14452US | CMA-USA - CMA, Inc. | 256 | — | 1 |
| AS399496US | SYBT - STOCK YARDS BANK AND TRUST COMPANY | 256 | — | 1 |
| AS399192US | BECI-01 - Beauregard Electric Cooperative, Inc | 256 | — | 1 |
| AS393702US | WISCONSIN-VISION-ASSOCIATES-INC - Wisconsin Vision Associates, Inc. | 256 | — | 1 |
| AS40849US | FULLBEAUTY-BRANDS - FullBeauty Brands Inc | 256 | — | 1 |