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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 |
| 65.5K |
| — |
| 1 |
| AS14529US | SJU-5600 - Saint Joseph's University | 65.5K | — | 1 |
| AS398060US | AU-158-93 - Augusta University | 65.5K | — | 1 |
| AS20162US | UTDALLAS - University of Texas at Dallas | 65.5K | — | 1 |
| AS396425US | UCCS-UNIVERSITY-OF-COLORADO-COLORADO-SPRINGS - University of Colorado, Colorado Springs | 65.5K | — | 1 |
| AS13326US | TUFTS-UNIVERSITY - Tufts University | 65.5K | 65.5K | 2 |
| AS98US | ROCKEFELLER-AS - The Rockefeller University | 65.5K | — | 1 |
| AS11534US | PHILA-SCHOOL-DISTRICT - The School District of Philadelphia | 65.5K | — | 1 |
| AS23309US | CCCOE-NET - Contra Costa County Office of Education | 65.5K | 65.5K | 2 |
| AS36269US | UOFSCRANTON - University of Scranton | 65.5K | — | 1 |
| AS31848US | DVUSD - Deer Valley Unified School District #97 | 65.5K | — | 1 |
| AS33030US | COLLEGE-OF-WOOSTER - College of Wooster | 65.5K | — | 1 |
| AS22877US | UMUC - University of Maryland Global Campus | 65.5K | — | 1 |
| AS62701US | HVCC - Hudson Valley Community College | 65.5K | — | 1 |
| AS16643US | VCU-ASN1 - Virginia Commonwealth University | 65.5K | — | 4 |
| AS10849US | DCCCD - Dallas College | 65.5K | — | 1 |
| AS5058US | NRL-EXP - Navy Network Information Center (NNIC) | 65.5K | 1 | 2 |
| AS32818US | CSUOHIO-AS - Cleveland State University | 65.5K | — | 1 |
| AS40723US | UVA-WISE-AS - The University of Virginia's College at Wise | 65.5K | — | 1 |
| AS32071US | WKU-AS - Western Kentucky University | 65.5K | — | 1 |
| AS26539US | GIANT-FOOD-INC - Ahold U.S.A., Inc. | 65.5K | — | 1 |
| AS2575US | SRPNET - Salt River Project Agricultural Improvement & Power District | 65.5K | — | 1 |
| AS1348US | CA-DOTNET-AS - California Department of Transportation | 65.5K | — | 1 |
| AS11197US | DART-HITCH - Dartmouth-Hitchcock Medical Center | 65.5K | — | 1 |
| AS3659US | CLAREMONT - Claremont University Consortium | 65.5K | 16 | 2 |
| AS54216US | GORE-NETWORK - W. L. Gore & Associates, Inc. | 65.5K | — | 1 |
| AS20239US | MNPOWER-ASN - ALLETE, Inc. | 65.5K | — | 1 |
| AS36427US | VASSAR-ASN1 - Vassar College | 65.5K | — | 1 |
| AS16461US | ASN-UTEP - The University of Texas at El Paso | 65.5K | — | 1 |
| AS1959US | DNIC-AS-01959 - United States Department of Defense (DoD) | 65.5K | — | 1 |
| AS92US | CLARKSON-AS - Clarkson University | 65.5K | 65.5K | 5 |
| AS46335US | PVAMU - PRAIRIE VIEW A&M UNIVERSITY | 65.5K | — | 1 |
| AS6112US | AUBURN - Auburn University | 65.5K | — | 1 |
| AS399697US | SUNY-BROCKPORT - SUNY College at Brockport | 65.5K | — | 1 |
| AS22174US | NET-SUC-TECH-ALF - State University of New York College of Technology at Alfred | 65.5K | — | 1 |
| AS6150US | NCIFCRF - National Cancer Institute | 65.5K | — | 1 |
| AS18711US | RICHARD-STOCK - Stockton University | 65.5K | — | 1 |
| AS2640US | AMESLAB-AS - Ames Laboratory | 65.5K | 1 | 2 |
| AS30499US | YSU-AS - Youngstown State University | 65.5K | — | 1 |
| AS398914US | SUNYOW - State University of New York College at Old Westbury | 65.5K | — | 1 |
| AS1289US | COLGATE-UNIVERSITY - Colgate University | 65.5K | 257 | 3 |
| AS6481US | SWRI - Southwest Research Institute | 65.5K | 1 | 2 |
| AS19342US | TRINITY-UNIVERSITY - Trinity University | 65.5K | — | 1 |
| AS10294US | CCCD-AS - Coast Community College District | 65.5K | — | 1 |
| AS27405US | PSC - University System of New Hampshire | 65.5K | — | 1 |
| AS401248US | JTSA-NYC - The Jewish Theological Seminary of America | 65.5K | — | 1 |
| AS25776US | UNIV-OF-OKLAHOMA - University of Oklahoma | 65.5K | — | 1 |