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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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218M | 23,695 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,300 |
| 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.
32,143 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,820 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,994 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,278 |
| 65.5K |
| 512 |
| 3 |
| AS47090US | SCLHS-47090 - Intermountain Health Care, Inc. | 65.5K | — | 1 |
| AS4604US | HOUSTON-ISD - Houston Independent School District | 65.5K | — | 3 |
| AS33608US | HOOD-COLLEGE - Hood College | 65.5K | — | 1 |
| AS40245US | WAKE-FOREST-UNIVERSITY - Wake Forest University | 65.5K | — | 1 |
| AS33434US | HAMILTON-COLLEGE - Hamilton College | 65.5K | — | 1 |
| AS30408US | ASUNET - Arkansas State University | 65.5K | — | 1 |
| AS54060US | POUDRESCHOOLDISTRICT - Poudre School District R-1 | 65.5K | — | 1 |
| AS15119US | SOUTHERN-ILLINOIS-UNIVERSITY - Southern Illinois University Carbondale | 65.5K | — | 1 |
| AS5661US | USF - UNIVERSITY OF SOUTH FLORIDA | 65.5K | 65.5K | 2 |
| AS2769US | NEBRASKA - State of Nebraska / Office of the CIO | 65.5K | — | 1 |
| AS18800US | SLCC - Salt Lake Community College | 65.5K | — | 1 |
| AS2936US | NERSC - National Energy Research Scientific Computing Center | 65.5K | 16 | 2 |
| AS14706US | MBARI-MAIN - Monterey Bay Aquarium Research Institute | 65.5K | — | 1 |
| AS53449US | OEC-FIBER - OEC Fiber | 65.5K | 65.5K | 6 |
| AS46662US | BSU-AS - Boise State University | 65.5K | — | 1 |
| AS18481US | BSWLHRICAS - BOCES Southern Westchester Lower Hudson Regional Information Center | 65.5K | — | 2 |
| AS17011US | PPG-INDUSTRIES - PPG Industries, Inc. | 65.5K | — | 1 |
| AS4597US | MILLIPORE - Millipore Corp. | 65.5K | 1 | 2 |
| AS3777US | HAVERFORD - Haverford College | 65.5K | — | 1 |
| AS16889US | STEVENS-TECH - Stevens Institute of Technology | 65.5K | — | 1 |
| AS6172US | MUSD-INTERNET - Mesa Public Schools | 65.5K | — | 3 |
| AS32417US | ELONU-AS - Elon University | 65.5K | — | 1 |
| AS394003US | UMASSD - University of Massachusetts Dartmouth | 65.5K | — | 1 |
| AS40591US | BUCKNELLUNIVERSITY - Bucknell University | 65.5K | 1 | 4 |
| AS16430US | USM - University of Southern Mississippi | 65.5K | — | 2 |
| AS3782US | SWARTHMORE - Swarthmore College | 65.5K | — | 1 |
| AS395871US | SUNY-COLLEGE-AT-PLATTSBURGH - SUNY College at Plattsburgh | 65.5K | — | 1 |
| AS23122US | DSU - Dakota State University | 65.5K | — | 1 |
| AS398757US | FTC-ASN - Federal Trade Commission | 65.5K | — | 1 |
| AS2532US | LOC - Library of Congress | 65.5K | — | 1 |
| AS19106US | ANDREWS - Andrews University | 65.5K | 1 | 2 |
| AS53384US | UNCC-AS - University of North Carolina at Charlotte | 65.5K | 65.5K | 2 |
| AS29917US | KSC - University System of New Hampshire | 65.5K | — | 1 |
| AS10508US | UARK-FAYETTEVILLE - University of Arkansas | 65.5K | 65.5K | 2 |
| AS402584US | MSUDENVER - Metropolitan | 65.5K | — | 1 |
| AS13940US | SJCOE - San Joaquin County Office of Education | 65.5K | — | 4 |
| AS5738US | SOVER-ASN - FirstLight Fiber, Inc. | 65.5K | — | 5 |
| AS5264US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | 65.5K | — | 1 |
| AS27594US | UTSA - University of Texas at San Antonio | 65.5K | — | 1 |
| AS1983US | BERNALILLO - Bernalillo County | 65.5K | — | 1 |
| AS5656US | ACCESSUS-DOM - accessU.S./BASENet | 65.5K | — | 5 |
| AS36704US | CSM-AS - Colorado School of Mines | 65.5K | — | 1 |
| AS53648US | SBAC - The School Board of Alachua County, Florida | 65.5K | — | 1 |
| AS25776US | UNIV-OF-OKLAHOMA - University of Oklahoma | 65.5K | — | 1 |
| AS401124US | SUNY-DELHI-01 - State University of New York College of Technology at Delhi | 65.5K | — | 1 |
| AS22063US | JPGT-22063 - J. Paul Getty Trust | 65.5K | — | 1 |