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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 24,372 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,322 |
| 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.
32,235 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,906 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.9M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.7M | 4,275 |
| INTERNATIONALDELIVERS - International Truck and Engine Corp |
| 66K |
| — |
| 3 |
| AS19184US | UWECNET - University of Wisconsin - Eau Claire | 66K | — | 3 |
| AS1555US | DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD) | 66K | — | 3 |
| AS102US | NSF-HQ-AS - U.S. National Science Foundation | 66K | 256 | 6 |
| AS394917US | SDUSD - San Diego Unified School District | 66K | — | 3 |
| AS22700US | USFCA - University of San Francisco | 66K | — | 4 |
| AS18815US | AS-CITY-AND-COUNTY-OF-DENVER - CITY AND COUNTY OF DENVER | 66K | — | 3 |
| AS3482US | MTSTGOV - State of Montana | 66K | — | 3 |
| AS54257US | VSC-AS-VERMONT-STATE-COLLEGES - Vermont State Colleges | 66K | — | 3 |
| AS62757US | RISD-ASN - Richardson Independent School District | 66K | — | 3 |
| AS10952US | ECU-AS - East Carolina University | 66K | — | 3 |
| AS20US | UR - University of Rochester | 66K | 256 | 4 |
| AS10357US | JMUNET - James Madison University | 66K | — | 3 |
| AS32996US | AGRIBANK-STPAUL - AgriBank, FCB | 66K | — | 3 |
| AS13829US | PIMACOUNTY - Pima County | 66K | — | 3 |
| AS7050US | UW-MILWAUKEE-AS1 - University of Wisconsin - Milwaukee | 66K | 65.5K | 4 |
| AS26462US | AS-GENESEO - The State University of New York College at Geneseo | 66K | 1 | 3 |
| AS398813US | MILLERSVILLE-UNIVERSITY - Millersville University of Pennsylvania | 66K | 4.1K | 11 |
| AS22463US | ADS-17-22463 - CDK Global, LLC | 66K | — | 3 |
| AS327US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 66K | 256 | 4 |
| AS31967US | FLTECH - Florida Institute of Technology | 66K | 65.5K | 4 |
| AS6366US | PDXNET - Portland State University | 66K | 65.5K | 4 |
| AS11348US | MST - Missouri University of Science and Technology | 66.2K | — | 4 |
| AS26817US | MICROC-ASN - Microchip Technology Inc. | 66.3K | — | 4 |
| AS10364US | UAHNET - University of Alabama in Huntsville | 66.3K | — | 3 |
| AS11052US | IHC-NET - Intermountain Health Care, Inc. | 66.3K | — | 3 |
| AS32513US | BATTELLE-MEMORIAL-INSTITUTE - BATTELLE MEMORIAL INSTITUTE | 66.3K | — | 4 |
| AS11205US | CITY-OF-PHILADELPHIA - City of Philadelphia | 66.3K | — | 3 |
| AS20452US | BSU - BALL STATE UNIVERSITY | 66.3K | 1 | 4 |
| AS7212US | VANDERBILT - Vanderbilt University | 66.3K | 65.5K | 5 |
| AS32895US | MILLIKEN-COMPANY-ASN1 - Milliken & Company | 66.3K | — | 4 |
| AS2384US | AOCNET - Architect of the Capitol | 66.3K | — | 4 |
| AS1747US | IBMWATSON-AS - IBM | 66.3K | — | 4 |
| AS8122US | DQNAS - Duquesne University | 66.3K | — | 4 |
| AS33235US | SANJUAN - San Juan Unified School District | 66.3K | — | 3 |
| AS33274US | ASN-FAIRVIEWHEALTHSERVICES - Fairview Health Services | 66.3K | — | 4 |
| AS339US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 66.3K | 256 | 5 |
| AS46520US | CA-DOJ - California Department of Justice | 66.3K | — | 4 |
| AS2650US | EOP-ASN - Executive Office Of The President | 66.6K | — | 5 |
| AS338US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 66.6K | 256 | 5 |
| AS53380US | LGCNS-AS - LG CNS America Inc. | 66.6K | — | 5 |
| AS4544US | NAVE-CONX-A - Navisite Opco LLC | 66.6K | — | 12 |
| AS84US | DNIC-AS-00084 - Navy Network Information Center (NNIC) | 66.6K | 1 | 6 |
| AS352US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 66.6K | 256 | 6 |
| AS4130US | UPITT-AS - University of Pittsburgh | 66.6K | 66 | 6 |
| AS17343US | SFWMD - South | 66.6K | — | 5 |
| AS2701US | KSU-NET - Kansas State University | 66.6K | — | 2 |