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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 |
| 65.8K |
| 1 |
| 3 |
| AS22323US | UNIVERSITY-OF-CALIFORNIA-MERCED - University of California, Merced | 65.8K | — | 2 |
| AS10561US | BRANDEIS - Brandeis University | 65.8K | — | 2 |
| AS29899US | GEISINGER - Geisinger System Services | 65.8K | 256 | 3 |
| AS4385US | RIT-ASN - Rochester Institute of Technology | 65.8K | 1 | 3 |
| AS11399US | WILLIAMSCOLLEGE - Williams College | 65.8K | 19 | 7 |
| AS33401US | CPCC - Central Piedmont Community College | 65.8K | — | 2 |
| AS7386US | ILLINOIS-STATE-UNIV - Illinois State University | 65.6K | — | 2 |
| AS1351US | UVM-EDU-AS - University of Vermont | 65.6K | 256 | 3 |
| AS23122US | DSU - Dakota State University | 65.5K | — | 1 |
| AS22226US | SFUSD - San Francisco Unified School District | 65.5K | — | 1 |
| AS6056US | COLBY - Colby College | 65.5K | — | 1 |
| AS396087US | SMCM - St. Mary's College of Maryland | 65.5K | — | 1 |
| AS7301US | NAS-AS - National Academy of Sciences | 65.5K | — | 1 |
| AS22178US | PA-SENATE - Senate of Pennsylvania | 65.5K | — | 1 |
| AS32125US | WHEATON-COLLEGE - Wheaton College | 65.5K | — | 1 |
| AS6172US | MUSD-INTERNET - Mesa Public Schools | 65.5K | — | 3 |
| AS14169US | VMI-ASN - Virginia Military Institute | 65.5K | — | 1 |
| AS2903US | MORIC - Madison-Oneida BOCES | 65.5K | — | 1 |
| AS22303US | NEWPALTZEDU - State University of New York at New Paltz | 65.5K | 1 | 2 |
| AS401124US | SUNY-DELHI-01 - State University of New York College of Technology at Delhi | 65.5K | — | 1 |
| AS6074US | LIUNET - Long Island University | 65.5K | — | 1 |
| AS27594US | UTSA - University of Texas at San Antonio | 65.5K | — | 1 |
| AS6628US | PPS - Portland Public Schools | 65.5K | — | 1 |
| AS10448US | VILLANOVA-UNIV - Villanova University | 65.5K | — | 1 |
| AS54973US | SACREDHEARTUNIVERSITY - Sacred Heart University | 65.5K | — | 1 |
| AS33608US | HOOD-COLLEGE - Hood College | 65.5K | — | 1 |
| AS5264US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | 65.5K | — | 1 |
| AS396128US | MHC-NET - Mount Holyoke College | 65.5K | — | 1 |
| AS13940US | SJCOE - San Joaquin County Office of Education | 65.5K | — | 4 |
| AS1983US | BERNALILLO - Bernalillo County | 65.5K | — | 1 |
| AS2936US | NERSC - National Energy Research Scientific Computing Center | 65.5K | 16 | 2 |
| AS398757US | FTC-ASN - Federal Trade Commission | 65.5K | — | 1 |
| AS4597US | MILLIPORE - Millipore Corp. | 65.5K | 1 | 2 |
| AS53648US | SBAC - The School Board of Alachua County, Florida | 65.5K | — | 1 |
| AS36704US | CSM-AS - Colorado School of Mines | 65.5K | — | 1 |
| AS32417US | ELONU-AS - Elon University | 65.5K | — | 1 |
| AS27219US | SUNY-CORTLAND - SUNY College at Cortland | 65.5K | — | 1 |
| AS33170US | MORGAN-STATE-UNIVERSITY - Morgan State University | 65.5K | — | 1 |
| AS46470US | SKIDMORE-I2-AS - Skidmore College | 65.5K | — | 1 |
| AS13327US | EKU - Eastern Kentucky University | 65.5K | — | 1 |
| AS22949US | GRINNE-AS - Grinnell College | 65.5K | — | 1 |
| AS15119US | SOUTHERN-ILLINOIS-UNIVERSITY - Southern Illinois University Carbondale | 65.5K | — | 1 |
| AS2769US | NEBRASKA - State of Nebraska / Office of the CIO | 65.5K | — | 1 |
| AS33703US | HOFSTRA-UNIVERSITY - Hofstra University | 65.5K | 16 | 3 |
| AS53446US | EVMS - Eastern Virginia Medical School | 65.5K | — | 1 |
| AS358US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 65.5K | 256 | 2 |