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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 |
| 401.4K |
| 65.5K |
| 28 |
| AS6431US | ATT-RESEARCH - AT&T Enterprises, LLC | 396.8K | 193 | 21 |
| AS11663US | SUG-1 - State of Utah | 395.8K | — | 9 |
| AS3354US | THENET-AS-3354 - University of Texas System | 395.3K | 257 | 16 |
| AS13695US | AEP - American Electirc Power Co. | 393.5K | — | 15 |
| AS35986US | VYVE-BROADBAND - Vyve Broadband | 389.1K | 197.1K | 717 |
| AS6122US | ICN-AS - Iowa Communications Network | 386.8K | 65.8K | 17 |
| AS18779US | EGIHOSTING - EGIHosting | 380.7K | 2.7M | 874 |
| AS36149US | HAWAIIAN-TELCOM - Hawaiian Telcom Services Company, Inc. | 379.4K | 65.5K | 18 |
| AS2048US | LANET-1 - State of Louisiana Office of Technology Services | 378.9K | — | 100 |
| AS55286US | SERVER-MANIA - B2 Net Solutions Inc. | 377.3K | 1.1M | 908 |
| AS30058US | FDCSERVERS - FDCservers.net | 375K | 65.9K | 983 |
| AS23005US | SWITCH-LTD - SWITCH, LTD | 374.3K | 147.5K | 176 |
| AS21852US | DISNW1 - State Of Arkansas, Division of Information Systems | 370.2K | — | 11 |
| AS54253US | ORCL-CHICAGO-PP - Oracle Corporation | 368.1K | 707.8K | 842 |
| AS1554US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | 356.9K | — | 25 |
| AS2900US | WN-AZ-AS - Arizona Tri University Network | 345.6K | 2 | 22 |
| AS14615US | ROCK-HILL-TELEPHONE - Comporium, Inc | 342.8K | 65.5K | 556 |
| AS13536US | TVC-AS1 - FirstLight Fiber, Inc. | 340.2K | 196.6K | 131 |
| AS22205US | DATAPIPE-SEA - DataPipe, Inc. | 338.9K | 65.5K | 70 |
| AS3477US | NOAA-NWAVE - National Oceanic and Atmospheric Administration | 338.4K | 526K | 113 |
| AS3527US | NIH-NET - National Institutes of Health | 337.7K | 32 | 13 |
| AS22252US | AS22252 - The City of New York | 336.4K | — | 23 |
| AS22390US | XEROX-WB - XEROX CORPORATION | 335.6K | — | 18 |
| AS27046US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 335.4K | 114 | 628 |
| AS5774US | USPS-001 - United States Postal Service | 334.1K | 81.9K | 32 |
| AS8047US | GCI - GENERAL COMMUNICATION, INC. | 333.1K | 65.5K | 30 |
| AS29992US | VA-TMP-CORE - U.S. Department of Veterans Affairs | 332.8K | 5.2M | 38 |
| AS6289US | AHM-CORP - American Honda Motor Company, Inc. | 331.5K | — | 17 |
| AS59US | WISC-MADISON-AS - University of Wisconsin Madison | 331.5K | 65.5K | 17 |
| AS91US | RPI-AS - Rensselaer Polytechnic Institute | 330.5K | 2 | 14 |
| AS3480US | PEACHNET-AS3480 - Board of Regents of the University System of Georgia | 330.5K | — | 10 |
| AS32US | STANFORD - Stanford University | 329.7K | 65.5K | 5 |
| AS52US | UCLA - University of California, Los Angeles | 329K | 65.5K | 11 |
| AS68US | LANL-NM - Los Alamos National Laboratory | 328.4K | 256 | 9 |
| AS54290US | HOSTWINDS - Hostwinds LLC. | 328.2K | 196.6K | 78 |
| AS1201US | ASN-ODU-AS-AS - Old Dominion University | 327.9K | — | 33 |
| AS217US | UMN-SYSTEM - University of Minnesota | 327.7K | 1 | 6 |
| AS22646US | HARCOM1 - Hargray Communications Group, Inc. | 326.9K | — | 467 |
| AS13428US | SURFAIRWIRELESS-IN-02 - Surf Air Wireless, LLC | 325.4K | 65.5K | 235 |
| AS19527US | GOOGLE-2 - Google LLC | 324.6K | 208 | 116 |
| AS17054US | EXPEDIENT - Expedient | 322.8K | 66K | 75 |
| AS15108US | ALLO-COMM - Allo Communications LLC | 318.2K | 1M | 73 |
| AS6099US | BAE-NET-ASN - Alameda County Office of Education | 316.2K | 65.5K | 20 |
| AS27364US | ACS-INTERNET - Armstrong | 315.9K | 1M | 45 |
| AS226US | LOS-NETTOS-AS - Los Nettos | 315.1K | 65.5K | 15 |
| AS26810US | HHSNET-NOC-ASN - U.S. Dept. of Health and Human Services | 313.9K | 16.8M | 21 |