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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 |
| SBAC - The School Board of Alachua County, Florida |
| 65.5K |
| — |
| 1 |
| AS46470US | SKIDMORE-I2-AS - Skidmore College | 65.5K | — | 1 |
| AS54973US | SACREDHEARTUNIVERSITY - Sacred Heart University | 65.5K | — | 1 |
| AS30408US | ASUNET - Arkansas State University | 65.5K | — | 1 |
| AS394271US | SPS-157-246-0-0 - Springfield Public Schools | 65.5K | 1 | 2 |
| AS6172US | MUSD-INTERNET - Mesa Public Schools | 65.5K | — | 3 |
| AS19933US | BUFFALOSTATE - Buffalo State College | 65.5K | — | 1 |
| AS13940US | SJCOE - San Joaquin County Office of Education | 65.5K | — | 4 |
| AS18800US | SLCC - Salt Lake Community College | 65.5K | — | 1 |
| AS12173US | UA - The University of Alabama | 65.5K | — | 6 |
| AS36091US | SCAQMD-ASN - South Coast Air Quality Management District | 65.5K | — | 1 |
| AS54965US | NYU-POLY - Polytechnic Institute of NYU | 65.5K | — | 1 |
| AS16424US | LBL-ESD - Linn Benton Lincoln Education Service District | 65.5K | — | 1 |
| AS5738US | SOVER-ASN - FirstLight Fiber, Inc. | 65.5K | — | 5 |
| AS22828US | ASN-FDA - United States Food and Drug Administration | 65.5K | 16 | 2 |
| AS6009US | DNIC-ASBLK-05800-06055 - United States Department of Defense (DoD) | 65.5K | 1 | 2 |
| AS15119US | SOUTHERN-ILLINOIS-UNIVERSITY - Southern Illinois University Carbondale | 65.5K | — | 1 |
| AS396128US | MHC-NET - Mount Holyoke College | 65.5K | — | 1 |
| AS6628US | PPS - Portland Public Schools | 65.5K | — | 1 |
| AS33703US | HOFSTRA-UNIVERSITY - Hofstra University | 65.5K | 16 | 3 |
| AS2936US | NERSC - National Energy Research Scientific Computing Center | 65.5K | 16 | 2 |
| AS17311US | ECMC-BGP - Erie County Medical Center | 65.5K | — | 1 |
| AS4604US | HOUSTON-ISD - Houston Independent School District | 65.5K | — | 3 |
| AS19106US | ANDREWS - Andrews University | 65.5K | 1 | 2 |
| AS18844US | SHERWIN-AS - The Sherwin Williams Company | 65.5K | — | 1 |
| AS22178US | PA-SENATE - Senate of Pennsylvania | 65.5K | — | 1 |
| AS2769US | NEBRASKA - State of Nebraska / Office of the CIO | 65.5K | — | 1 |
| AS2532US | LOC - Library of Congress | 65.5K | — | 1 |
| AS4211US | ASN-MARICOPA1 - Maricopa County Government | 65.5K | — | 1 |
| AS4597US | MILLIPORE - Millipore Corp. | 65.5K | 1 | 2 |
| AS33608US | HOOD-COLLEGE - Hood College | 65.5K | — | 1 |
| AS32501US | TUCSON-UNIFIED-SCHOOL-DISTRICT-1 - Tucson Unified School District #1 | 65.5K | — | 1 |
| AS401248US | JTSA-NYC - The Jewish Theological Seminary of America | 65.5K | — | 1 |
| AS7301US | NAS-AS - National Academy of Sciences | 65.5K | — | 1 |
| AS27594US | UTSA - University of Texas at San Antonio | 65.5K | — | 1 |
| AS4241US | CSFTB - California State Franchise Tax Board | 65.5K | — | 1 |
| AS393529US | VUMC - Vanderbilt University Medical Center | 65.5K | 1 | 2 |
| AS32417US | ELONU-AS - Elon University | 65.5K | — | 1 |
| AS54060US | POUDRESCHOOLDISTRICT - Poudre School District R-1 | 65.5K | — | 1 |
| AS13783US | RADFORD-UNIV-AS - Radford University | 65.5K | — | 1 |
| AS13327US | EKU - Eastern Kentucky University | 65.5K | — | 1 |
| AS33170US | MORGAN-STATE-UNIVERSITY - Morgan State University | 65.5K | — | 1 |
| AS22834US | BOSTONCOLLEGE - Boston College | 65.5K | 65.5K | 2 |
| AS394003US | UMASSD - University of Massachusetts Dartmouth | 65.5K | — | 1 |
| AS358US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 65.5K | 256 | 2 |
| AS62810US | SUNY-ONEONTA - SUNY Oneonta | 65.5K | 65.5K | 2 |
| AS6074US | LIUNET - Long Island University | 65.5K | — | 1 |