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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 |
| 65.5K |
| — |
| 1 |
| AS22174US | NET-SUC-TECH-ALF - State University of New York College of Technology at Alfred | 65.5K | — | 1 |
| AS33523US | ROWANUNIVERSITY - Rowan University | 65.5K | — | 1 |
| AS11482US | CANISIUS-COLLEGE - Canisius College | 65.5K | — | 1 |
| AS14706US | MBARI-MAIN - Monterey Bay Aquarium Research Institute | 65.5K | — | 1 |
| AS11214US | UNIVERSITY-OF-NORTH-FLORIDA - University of North Florida | 65.5K | 16 | 2 |
| AS396087US | SMCM - St. Mary's College of Maryland | 65.5K | — | 1 |
| AS30641US | STATEOFDE - STATE OF DELAWARE | 65.5K | 4.1K | 3 |
| AS17234US | GAC - Gustavus Adolphus College | 65.5K | 65.5K | 3 |
| AS27219US | SUNY-CORTLAND - SUNY College at Cortland | 65.5K | — | 1 |
| AS27616US | AS-NEWSCHOOL - The New School | 65.5K | — | 1 |
| AS27594US | UTSA - University of Texas at San Antonio | 65.5K | — | 1 |
| AS16424US | LBL-ESD - Linn Benton Lincoln Education Service District | 65.5K | — | 1 |
| AS40591US | BUCKNELLUNIVERSITY - Bucknell University | 65.5K | 1 | 4 |
| AS7281US | BOOZ-AS - Booz Allen Hamilton Inc. | 65.5K | — | 1 |
| AS3795US | BRYNMAWR - Bryn Mawr College | 65.5K | — | 1 |
| AS18844US | SHERWIN-AS - The Sherwin Williams Company | 65.5K | — | 1 |
| AS36704US | CSM-AS - Colorado School of Mines | 65.5K | — | 1 |
| AS24US | AS24 - National Aeronautics and Space Administration | 65.5K | 1 | 2 |
| AS33608US | HOOD-COLLEGE - Hood College | 65.5K | — | 1 |
| AS353US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 65.5K | — | 1 |
| AS22245US | WICHITA-STATE-U - Wichita State University | 65.5K | — | 1 |
| AS13783US | RADFORD-UNIV-AS - Radford University | 65.5K | — | 1 |
| AS54060US | POUDRESCHOOLDISTRICT - Poudre School District R-1 | 65.5K | — | 1 |
| AS6009US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 65.5K | 1 | 2 |
| AS19933US | BUFFALOSTATE - Buffalo State College | 65.5K | — | 1 |
| AS46470US | SKIDMORE-I2-AS - Skidmore College | 65.5K | — | 1 |
| AS2769US | NEBRASKA - State of Nebraska / Office of the CIO | 65.5K | — | 1 |
| AS11649US | GUNET - Gonzaga University | 65.5K | — | 1 |
| AS25776US | UNIV-OF-OKLAHOMA - University of Oklahoma | 65.5K | — | 1 |
| AS32125US | WHEATON-COLLEGE - Wheaton College | 65.5K | — | 1 |
| AS11607US | SD-STATE-UNIVERSITY - South Dakota State University | 65.5K | — | 1 |
| AS5376US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | 65.5K | 1 | 2 |
| AS19342US | TRINITY-UNIVERSITY - Trinity University | 65.5K | — | 1 |
| AS4211US | ASN-MARICOPA1 - Maricopa County Government | 65.5K | — | 1 |
| AS18481US | BSWLHRICAS - BOCES Southern Westchester Lower Hudson Regional Information Center | 65.5K | — | 2 |
| AS62810US | SUNY-ONEONTA - SUNY Oneonta | 65.5K | 65.5K | 2 |
| AS63102US | MESSA-AS - Michigan Education Special Services Association | 65.5K | — | 1 |
| AS11417US | NIU - Northern Illinois University | 65.5K | — | 1 |
| AS29917US | KSC - University System of New Hampshire | 65.5K | — | 1 |
| AS32243US | ATI-ASN - ATI | 65.5K | — | 1 |
| AS33170US | MORGAN-STATE-UNIVERSITY - Morgan State University | 65.5K | — | 1 |
| AS36390US | TRI-C-AS - Cuyahoga Community College | 65.5K | — | 1 |
| AS2705US | BJCHE-1 - BJC HEALTH SYSTEM | 65.5K | — | 1 |
| AS15119US | SOUTHERN-ILLINOIS-UNIVERSITY - Southern Illinois University Carbondale | 65.5K | — | 1 |
| AS401917US | SUNY-COBLESKILL - The State University of New York College of Agriculture and Technology at Cobleskill | 65.5K | — | 1 |
| AS40245US | WAKE-FOREST-UNIVERSITY - Wake Forest University | 65.5K | — | 1 |