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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 |
| 70.9K |
| — |
| 22 |
| AS26133US | FEWPB - Frankfort Plant Board | 70.9K | — | 18 |
| AS32798US | HIGHLINE-AS - Highline Services, LLC | 70.7K | 106.5K | 71 |
| AS27016US | NRC-NET - United States Nuclear Regulatory Commission | 70.7K | 267 | 35 |
| AS17153US | NMT-AS - New Mexico Tech | 70.7K | — | 5 |
| AS11355US | SHELL - Shell Information Technology International, Inc. | 70.7K | — | 20 |
| AS21558US | SC-JOHNSON - S.C. Johnson & Son, Inc. | 70.7K | — | 5 |
| AS7276US | UNIVERSITY-OF-HOUSTON - University of Houston | 70.7K | 65.5K | 7 |
| AS21508US | COMCAST-21508 - Comcast Cable Communications, LLC | 70.4K | 61 | 78 |
| AS18880US | LAMRC - Lam Research Corporation | 70.4K | — | 20 |
| AS21680US | GWLNET - Empower Retirement, LLC | 70.4K | — | 19 |
| AS20326US | TERASWITCH - TeraSwitch Networks Inc. | 70.1K | 2K | 191 |
| AS62618US | MICHIGANTECH - Michigan Technological University | 70.1K | — | 3 |
| AS14946US | BMHCC - Baptist Memorial Health Care Corporation | 70.1K | — | 19 |
| AS26305US | ASN-SSM - SSM Health Care | 70.1K | 4.1K | 10 |
| AS346US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 70.1K | 256 | 10 |
| AS11309US | IMF - International Monetary Fund | 70.1K | — | 4 |
| AS3455US | WAUSAU-INS - Liberty Mutual Group | 70.1K | — | 130 |
| AS14677US | CLICK-NETWORK - City of Tacoma | 70.1K | — | 75 |
| AS15141US | ASN-BAUSCH-LOMB - Bausch & Lomb | 70.1K | — | 4 |
| AS46196US | RCIT-CORNET - County of Riverside | 70.1K | — | 16 |
| AS26548US | PUREVOLTAGE-INC - PureVoltage Hosting Inc. | 70.1K | 21K | 148 |
| AS25899US | LSNET - LS Networks | 69.9K | 131.1K | 51 |
| AS33217US | SCHNEIDER - Schneider National, Inc. | 69.9K | — | 5 |
| AS36180US | CISCO-IOT - Cisco IoT | 69.9K | 9.3K | 141 |
| AS46341US | CPUC-AS-001 - California Public Utilities Commission | 69.9K | — | 19 |
| AS16920US | WINDRIVER - Wind River Systems, Inc. | 69.9K | 259 | 20 |
| AS7328US | CHOP - The Children's Hospital of Philadelphia | 69.9K | — | 4 |
| AS14443US | BFS-49-14443 - Broadridge Financial Solutions, Inc. | 69.9K | — | 3 |
| AS22586US | AS22586 - Gulfstream Aerospace Corporation | 69.9K | — | 18 |
| AS11252US | ISU-NET-AS - Idaho State University | 69.6K | — | 10 |
| AS12182US | INTERNAP-2BLK - Unitas Global | 69.6K | 65.5K | 40 |
| AS12013US | FAUNET - Florida Atlantic University | 69.6K | — | 8 |
| AS317US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 69.6K | 256 | 10 |
| AS3390US | UMKCNET - University of Missouri - Kansas City | 69.6K | 16 | 6 |
| AS25691US | CTSTATEU - Connecticut State Colleges & Universities, Connecticut State University System | 69.6K | — | 2 |
| AS32229US | JSUMS-ARIN - Jackson State University | 69.6K | — | 15 |
| AS394769US | UMF-7-AS - University of Michigan - Flint | 69.6K | — | 2 |
| AS25807US | ARLINGTONVA - Arlington County Government | 69.4K | — | 7 |
| AS348US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 69.4K | 256 | 17 |
| AS26783US | MARICOPA-COUNTY-COMMUNITY-COLLEGE-DISTRICT - Maricopa County Community College District | 69.4K | — | 35 |
| AS398130US | MARYLAND-AOC - Maryland Administrative Office of the Courts (AOC) | 69.1K | — | 15 |
| AS4046US | FAA - Federal Aviation Administration | 69.1K | 65.5K | 17 |
| AS20135US | MTL-19 - Millennium Telcom LLC | 69.1K | 8.2K | 46 |
| AS21899US | ABBOTT - Abbott Laboratories | 69.1K | — | 6 |
| AS252US | DNIC-AS-00252 - Headquarters, USAISC | 69.1K | 1 | 6 |
| AS63479US | HAMWAN - HamWAN | 68.9K | — | 11 |