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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 |
| 65.5K |
| 65.5K |
| 6 |
| AS30703US | SHSC-1-AS - State University of New York, Health Science Center at Syracuse | 65.5K | — | 2 |
| AS15119US | SOUTHERN-ILLINOIS-UNIVERSITY - Southern Illinois University Carbondale | 65.5K | — | 1 |
| AS10755US | DARTMOUTH-AS - Dartmouth College | 65.5K | 65.5K | 2 |
| AS6009US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 65.5K | 1 | 2 |
| AS53604US | UAPB-AS - University of Arkansas at Pine Bluff | 65.5K | — | 1 |
| AS17234US | GAC - Gustavus Adolphus College | 65.5K | 65.5K | 3 |
| AS22226US | SFUSD - San Francisco Unified School District | 65.5K | — | 1 |
| AS6172US | MUSD-INTERNET - Mesa Public Schools | 65.5K | — | 3 |
| AS32501US | TUCSON-UNIFIED-SCHOOL-DISTRICT-1 - Tucson Unified School District #1 | 65.5K | — | 1 |
| AS47090US | SCLHS-47090 - Intermountain Health Care, Inc. | 65.5K | — | 1 |
| AS401917US | SUNY-COBLESKILL - The State University of New York College of Agriculture and Technology at Cobleskill | 65.5K | — | 1 |
| AS54973US | SACREDHEARTUNIVERSITY - Sacred Heart University | 65.5K | — | 1 |
| AS2903US | MORIC - Madison-Oneida BOCES | 65.5K | — | 1 |
| AS19933US | BUFFALOSTATE - Buffalo State College | 65.5K | — | 1 |
| AS14706US | MBARI-MAIN - Monterey Bay Aquarium Research Institute | 65.5K | — | 1 |
| AS396087US | SMCM - St. Mary's College of Maryland | 65.5K | — | 1 |
| AS2769US | NEBRASKA - State of Nebraska / Office of the CIO | 65.5K | — | 1 |
| AS46905US | UMASS-LOWELL - University of Massachusetts - Lowell | 65.5K | — | 1 |
| AS19106US | ANDREWS - Andrews University | 65.5K | 1 | 2 |
| AS13940US | SJCOE - San Joaquin County Office of Education | 65.5K | — | 4 |
| AS18800US | SLCC - Salt Lake Community College | 65.5K | — | 1 |
| AS27594US | UTSA - University of Texas at San Antonio | 65.5K | — | 1 |
| AS358US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 65.5K | 512 | 3 |
| AS27219US | SUNY-CORTLAND - SUNY College at Cortland | 65.5K | — | 1 |
| AS53648US | SBAC - The School Board of Alachua County, Florida | 65.5K | — | 1 |
| AS6628US | PPS - Portland Public Schools | 65.5K | — | 1 |
| AS6074US | LIUNET - Long Island University | 65.5K | — | 1 |
| AS18844US | SHERWIN-AS - The Sherwin Williams Company | 65.5K | — | 1 |
| AS33170US | MORGAN-STATE-UNIVERSITY - Morgan State University | 65.5K | — | 1 |
| AS6056US | COLBY - Colby College | 65.5K | — | 1 |
| AS398451US | RHIT - Rose-Hulman Institute of Technology, Inc | 65.5K | 1 | 2 |
| AS401124US | SUNY-DELHI-01 - State University of New York College of Technology at Delhi | 65.5K | — | 1 |
| AS36091US | SCAQMD-ASN - South Coast Air Quality Management District | 65.5K | — | 1 |
| AS46470US | SKIDMORE-I2-AS - Skidmore College | 65.5K | — | 1 |
| AS30408US | ASUNET - Arkansas State University | 65.5K | — | 1 |
| AS1983US | BERNALILLO - Bernalillo County | 65.5K | — | 1 |
| AS25709US | LAMARUNIV - Lamar University | 65.5K | — | 1 |
| AS393529US | VUMC - Vanderbilt University Medical Center | 65.5K | 1 | 2 |
| AS394271US | SPS-157-246-0-0 - Springfield Public Schools | 65.5K | 1 | 2 |
| AS10448US | VILLANOVA-UNIV - Villanova University | 65.5K | — | 1 |
| AS5264US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | 65.5K | — | 1 |
| AS398757US | FTC-ASN - Federal Trade Commission | 65.5K | — | 1 |
| AS32125US | WHEATON-COLLEGE - Wheaton College | 65.5K | — | 1 |
| AS33703US | HOFSTRA-UNIVERSITY - Hofstra University | 65.5K | 16 | 3 |
| AS4241US | CSFTB - California State Franchise Tax Board | 65.5K | — | 1 |
| AS2532US | LOC - Library of Congress | 65.5K | — | 1 |