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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 |
| MARIST - Marist University |
| 68.9K |
| 1 |
| 5 |
| AS321US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 68.9K | 256 | 15 |
| AS3681US | FIU - Florida International University | 68.9K | 1 | 8 |
| AS302US | BCM-INFO-NET-AS - Baylor College of Medicine | 68.9K | 2 | 13 |
| AS4US | ISI-AS - University of Southern California | 68.9K | 131.1K | 48 |
| AS40382US | HENNEPIN-COUNTY - Hennepin County | 68.6K | 69.6K | 15 |
| AS10968US | CARGILL-NET - Cargill Incorporated | 68.6K | — | 13 |
| AS364US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 68.6K | 256 | 11 |
| AS6319US | MARRIOT-ASN - Marriot Corporation | 68.6K | — | 10 |
| AS25978US | RUSH-EXTERNAL - Rush University Medical Center | 68.6K | — | 5 |
| AS316US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 68.6K | 256 | 11 |
| AS589US | UNT - University of North Texas | 68.4K | 64 | 6 |
| AS15171US | TOMBIGBEE-FIBER - Tombigbee Fiber LLC | 68.4K | — | 83 |
| AS15307US | CHILDRENS-SEATTLE - Childrens Hospital and Regional Medical Center | 68.4K | — | 12 |
| AS13429US | MUSC - Medical University of South Carolina | 68.4K | — | 5 |
| AS396835US | CSDL01 - The Charles Stark Draper Laboratory, Inc. | 68.4K | — | 10 |
| AS13462US | IEEE - Institute of Electrical and Electronics Engineers, Inc | 68.4K | 16 | 10 |
| AS46453US | ABBOTT-AS46453 - Abbott Laboratories | 68.4K | — | 7 |
| AS22522US | ULALAUNCH - United Launch Alliance, LLC | 68.4K | — | 12 |
| AS3428US | ESNET-AS - ESnet | 68.4K | 16 | 6 |
| AS26298US | NET-BCBSF-ASN - Florida Blue | 68.4K | — | 6 |
| AS3923US | FAA-MMAC - Federal Aviation Administration | 68.4K | 2 | 6 |
| AS7872US | USAP-ASN - United States Antarctic Program | 68.4K | 16 | 10 |
| AS21713US | BULLOCH - Bulloch County Rural Telephone Cooperative, Inc. | 68.1K | 65.5K | 21 |
| AS10326US | WPI - Worcester Polytechnic Institute | 68.1K | 1 | 4 |
| AS5724US | UMASSMED - University of Massachusetts Medical School | 68.1K | — | 4 |
| AS5766US | IHS-MD-AS - Indian Health Service | 68.1K | 2 | 11 |
| AS347US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 68.1K | 256 | 9 |
| AS11915US | US-TELEPACIFIC - TPx Communications | 68.1K | 77.8K | 97 |
| AS319US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 68.1K | 256 | 9 |
| AS12005US | SC-AS - University of South Carolina | 67.8K | — | 3 |
| AS32035US | CCDT-AS - Sangoma US Inc. | 67.8K | 66.3K | 51 |
| AS32703US | IFN-NET - Zayo Bandwidth | 67.8K | 1.1M | 17 |
| AS13548US | CHARLESTON-AS - College of Charleston | 67.8K | — | 3 |
| AS342US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 67.8K | 256 | 8 |
| AS396178US | G-CLOUD-AGENT-TRAFFIC - Google LLC | 67.8K | — | 3 |
| AS18697US | AS18697 - GREEN MOUNTAIN POWER CORPORATION | 67.8K | — | 9 |
| AS16801US | ET-NET - Energy Transfer LP | 67.8K | — | 8 |
| AS4201US | ORST-AS - Oregon State University | 67.8K | 256 | 4 |
| AS10754US | GOV-FRB-BOG - Federal Reserve Board | 67.8K | — | 6 |
| AS33398US | HOSTA-LAS - Miva Merchant, Inc. | 67.8K | 24.6K | 17 |
| AS63US | LL-MI - Massachusetts Institute of Technology | 67.8K | — | 6 |
| AS10441US | JEG-1 - Jacobs Engineering Group Inc. | 67.6K | — | 6 |
| AS33194US | CAS-AUTONOMOUS-SYSTEM - Chemical Abstracts Service | 67.6K | — | 9 |
| AS16793US | DATA-TRONICS - ArcBest Technologies, Inc. | 67.6K | 4.1K | 10 |
| AS401240US | OEA-HQ - Ohio Education Association | 67.6K | — | 2 |
| AS395789US | CITYOFINDY - City of Indianapolis | 67.6K | — | 2 |