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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 | 3,136 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 210.5M | 20,721 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 638 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) | 73.1M | 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC |
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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 68.3M |
| 366 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 66.4M | 1,106 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 47.9M | 3,574 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,926 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.2M | 4,508 |
| 66.3K |
| 65.5K |
| 40 |
| AS339US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 66.3K | 256 | 5 |
| AS11773US | UTMDACC - The University Of Texas M.D. Anderson Cancer Center | 66.3K | — | 4 |
| AS10364US | UAHNET - University of Alabama in Huntsville | 66.3K | — | 3 |
| AS398813US | MILLERSVILLE-UNIVERSITY - Millersville University of Pennsylvania | 66.3K | 6.1K | 13 |
| AS32513US | BATTELLE-MEMORIAL-INSTITUTE - BATTELLE MEMORIAL INSTITUTE | 66.3K | — | 4 |
| AS22238US | DARPA - Defense Advanced Research Projects Agency(DARPA) | 66.3K | — | 4 |
| AS8122US | DQNAS - Duquesne University | 66.3K | — | 4 |
| AS26817US | MICROC-ASN - Microchip Technology Inc. | 66.3K | — | 4 |
| AS352US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 66.3K | 256 | 5 |
| AS2384US | AOCNET - Architect of the Capitol | 66.3K | — | 4 |
| AS11348US | MST - Missouri University of Science and Technology | 66.2K | — | 4 |
| AS589US | UNT - University of North Texas | 66K | 64 | 4 |
| AS2037US | CSUFRESNO - California State University at Fresno | 66K | — | 2 |
| AS1621US | ASN-SECURIAN - Securian Financial Group, Inc. | 66K | — | 3 |
| AS20US | UR - University of Rochester | 66K | 256 | 4 |
| AS32996US | AGRIBANK-STPAUL - AgriBank, FCB | 66K | — | 3 |
| AS3482US | MTSTGOV - State of Montana | 66K | — | 3 |
| AS10952US | ECU-AS - East Carolina University | 66K | — | 3 |
| AS18980US | PEACEHEALTH - Peace Health | 66K | — | 3 |
| AS54257US | VSC-AS-VERMONT-STATE-COLLEGES - Vermont State Colleges | 66K | — | 3 |
| AS1555US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | 66K | — | 3 |
| AS7050US | UW-MILWAUKEE-AS1 - University of Wisconsin - Milwaukee | 66K | 65.5K | 4 |
| AS401422US | ASNCOBBCOUNTY - Cobb County Government | 66K | — | 3 |
| AS394917US | SDUSD - San Diego Unified School District | 66K | — | 3 |
| AS10849US | DCCCD - Dallas College | 66K | — | 3 |
| AS14827US | WSDOT-ASN - Washington State Department of Transportation | 66K | — | 2 |
| AS102US | NSF-HQ-AS - U.S. National Science Foundation | 66K | 256 | 6 |
| AS140224US | NEBULA - Nebula Global LLC | 66K | 1 | 4 |
| AS14209US | UT-CHATTANOOGA - University of Tennessee at Chattanooga | 66K | 1 | 6 |
| AS19184US | UWECNET - University of Wisconsin - Eau Claire | 66K | — | 3 |
| AS26462US | AS-GENESEO - The State University of New York College at Geneseo | 66K | 1 | 3 |
| AS18815US | AS-CITY-AND-COUNTY-OF-DENVER - CITY AND COUNTY OF DENVER | 66K | — | 3 |
| AS1206US | PSCNET-HS-AS - Pittsburgh Supercomputing Center | 66K | — | 3 |
| AS47024US | THE-METROHEALTH-SYSTEM - The MetroHealth System | 66K | — | 3 |
| AS22217US | CALVIN-UNIVERSITY - Calvin College | 66K | — | 3 |
| AS13829US | PIMACOUNTY - Pima County | 66K | — | 3 |
| AS327US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 66K | 256 | 4 |
| AS27402US | IBC-N1 - Independence Blue Cross | 66K | — | 3 |
| AS46476US | TTUHSC - Texas Tech University Health Sciences Center | 66K | 256 | 5 |
| AS31967US | FLTECH - Florida Institute of Technology | 66K | 65.5K | 4 |
| AS12182US | INTERNAP-2BLK - Unitas Global | 66K | 65.5K | 35 |
| AS77US | JHUAPL-AS - Johns Hopkins University Applied Physics Laboratory | 66K | — | 3 |
| AS6366US | PDXNET - Portland State University | 66K | 65.5K | 4 |
| AS22700US | USFCA - University of San Francisco | 66K | — | 4 |
| AS1224US | NCSA-AS - University of Illinois | 65.8K | 1 | 3 |
| AS22845US | VIRGINIA-COMMUNITY-COLLEGE-SYSTEM - Virginia Community College System | 65.8K | — | 2 |