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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) | 227.7M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| 84.2K |
| — |
| 50 |
| AS53610US | METRO-COMMUNICATIONS-COMPANY - Metro Communications Company, Inc. | 84.2K | 65.5K | 19 |
| AS46093US | PALM-BEACH-COUNTY-FLORIDA - Palm Beach County | 84K | — | 21 |
| AS32577US | KROGER - The Kroger Co. | 84K | — | 4 |
| AS19820US | REXAM-ASN01 - Ball Corporation | 83.7K | — | 36 |
| AS32505US | DWL-MAIN - Conterra | 83.7K | 132.1K | 190 |
| AS29748US | QTS-ASH - Quality Technology Services, LLC | 83.7K | 131.1K | 27 |
| AS22315US | SBCSS - San Bernardino County Superintendent of Schools | 83.5K | — | 59 |
| AS33749US | FOCUS-BROADBAND - Focus Broadband | 83.5K | 65.5K | 55 |
| AS32104US | WELLMONT-TN - Wellmont Health System | 83.5K | — | 13 |
| AS33724US | BIZNESSHOSTING-DBA-VOLICO - VOLICO | 83.5K | 139.3K | 89 |
| AS26914US | SYNOPTEK - Synoptek, LLC | 82.9K | 513 | 34 |
| AS36712US | CONTIN-83-1 - United Airlines, Inc. | 82.7K | — | 68 |
| AS10421US | TTUNET - Texas Tech University | 82.7K | — | 5 |
| AS3369US | MCI-ASN - Verizon Business | 82.7K | 32 | 9 |
| AS29946US | UNION-CELL - Union Wireless | 82.7K | — | 21 |
| AS17135US | OHIOU - Ohio University | 82.7K | — | 4 |
| AS5939US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 82.4K | — | 4 |
| AS2902US | WN-WY-AS - University of Wyoming | 82.4K | — | 4 |
| AS7054US | MERCK - Merck and Co., Inc. | 82.4K | — | 43 |
| AS1249US | FIVE-COLLEGES-AS - University of Massachusetts - AMHERST | 82.4K | — | 4 |
| AS16922US | OUHSC-EDU - University of Oklahoma HSC | 82.4K | — | 6 |
| AS3377US | MCI-ASN - Verizon Business | 82.4K | — | 18 |
| AS29873US | BIZLAND-SD - Newfold Digital, Inc. | 82.4K | 1 | 33 |
| AS6595US | DODDSEUR - U.S. Department of Defense Education Activity | 82.4K | — | 3 |
| AS17327US | TSTC-AS - Texas State Technical College at Waco | 82.2K | — | 3 |
| AS11131US | UMBC-AS - University of Maryland Baltimore County (UMBC) | 82.2K | 16 | 4 |
| AS6189US | EPFL-AS - Enoch-Pratt Free Library | 82.2K | 65.5K | 4 |
| AS12145US | COLORADOSTATEUNIV - Colorado State University | 82.2K | — | 3 |
| AS13476US | MSU-BOZEMAN - Montana State University | 82.2K | 65.5K | 26 |
| AS3378US | MCI-ASN - Verizon Business | 81.9K | — | 40 |
| AS15199US | WWU - Western Washington University | 81.9K | 1 | 3 |
| AS53785US | UNC-GREENSBORO - University of North Carolina at Greensboro | 81.9K | — | 2 |
| AS22164US | CCSD - Clark County School District | 81.9K | — | 2 |
| AS7774US | ALASKA - University of Alaska | 81.9K | 65.5K | 3 |
| AS49US | US-NATIONAL-INSTITUTE-OF-STANDARDS-AND-TECHNOLOGY - National Institute of Standards and Technology | 81.7K | 2.1K | 36 |
| AS395662US | OZARKSGO - OzarksGo, LLC | 81.4K | 16.8M | 13 |
| AS23465US | NUTELECOM - Nuvera | 81.4K | — | 38 |
| AS6042US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 81.4K | — | 14 |
| AS13672US | FAIRPO-3 - Fidium | 81.2K | — | 44 |
| AS5050US | PSC-EXT - Pittsburgh Supercomputing Center | 81.2K | 65.5K | 19 |
| AS26375US | AIRESPRING - AIRESPRING, INC. | 80.9K | 65.6K | 246 |
| AS8025US | BRIGHTOK-AS - BrightNet Oklahoma | 80.6K | — | 22 |
| AS18530US | ISOMEDIA-1 - Isomedia, Inc. | 80.6K | 65.5K | 89 |
| AS46592US | TOMBIGBEECOMM-1 - Tombigbee Communications, LLC | 80.4K | — | 132 |
| AS397380US | TEMPLE-HEALTH - Temple University Health System, Inc. | 80.4K | — | 17 |
| AS17166US | TRAVELERSPCAS - Travelers Property Casualty Corp. | 80.1K | — | 30 |