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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 |
| — |
| 1 |
| AS46470US | SKIDMORE-I2-AS - Skidmore College | 65.5K | — | 1 |
| AS6522US | LEHIGH - Lehigh University | 65.5K | — | 1 |
| AS394271US | SPS-157-246-0-0 - Springfield Public Schools | 65.5K | 1 | 2 |
| AS4241US | CSFTB - California State Franchise Tax Board | 65.5K | — | 1 |
| AS6628US | PPS - Portland Public Schools | 65.5K | — | 1 |
| AS11482US | CANISIUS-COLLEGE - Canisius College | 65.5K | — | 1 |
| AS11607US | SD-STATE-UNIVERSITY - South Dakota State University | 65.5K | — | 1 |
| AS22245US | WICHITA-STATE-U - Wichita State University | 65.5K | — | 1 |
| AS30408US | ASUNET - Arkansas State University | 65.5K | — | 1 |
| AS13327US | EKU - Eastern Kentucky University | 65.5K | — | 1 |
| AS11214US | UNIVERSITY-OF-NORTH-FLORIDA - University of North Florida | 65.5K | — | 1 |
| AS5661US | USF - UNIVERSITY OF SOUTH FLORIDA | 65.5K | 65.5K | 2 |
| AS30703US | SHSC-1-AS - State University of New York, Health Science Center at Syracuse | 65.5K | — | 2 |
| AS27594US | UTSA - University of Texas at San Antonio | 65.5K | — | 1 |
| AS10448US | VILLANOVA-UNIV - Villanova University | 65.5K | — | 1 |
| AS46905US | UMASS-LOWELL - University of Massachusetts - Lowell | 65.5K | — | 1 |
| AS23122US | DSU - Dakota State University | 65.5K | — | 1 |
| AS2705US | BJCHE-1 - BJC HEALTH SYSTEM | 65.5K | — | 1 |
| AS401917US | SUNY-COBLESKILL - The State University of New York College of Agriculture and Technology at Cobleskill | 65.5K | — | 1 |
| AS21727US | HAMLINE-EDU - Hamline University | 65.5K | — | 1 |
| AS398451US | RHIT - Rose-Hulman Institute of Technology, Inc | 65.5K | 1 | 2 |
| AS3782US | SWARTHMORE - Swarthmore College | 65.5K | — | 1 |
| AS5264US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | 65.5K | — | 1 |
| AS7355US | MEITCA-AS - Mitsubishi Electric ITA (HSL) | 65.5K | — | 1 |
| AS53648US | SBAC - The School Board of Alachua County, Florida | 65.5K | — | 1 |
| AS53384US | UNCC-AS - University of North Carolina at Charlotte | 65.5K | 65.5K | 2 |
| AS40591US | BUCKNELLUNIVERSITY - Bucknell University | 65.5K | 1 | 4 |
| AS2532US | LOC - Library of Congress | 65.5K | — | 1 |
| AS401124US | SUNY-DELHI-01 - State University of New York College of Technology at Delhi | 65.5K | — | 1 |
| AS358US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 65.5K | 512 | 3 |
| AS3795US | BRYNMAWR - Bryn Mawr College | 65.5K | — | 1 |
| AS36691US | CSUP-AS - Colorado State University | 65.5K | — | 1 |
| AS5376US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | 65.5K | 1 | 2 |
| AS14433US | SUNY-OSWEGO-ASN - State University of New York - Oswego | 65.5K | — | 1 |
| AS17011US | PPG-INDUSTRIES - PPG Industries, Inc. | 65.5K | — | 1 |
| AS2936US | NERSC - National Energy Research Scientific Computing Center | 65.5K | 16 | 2 |
| AS19151US | BBO-1 - BroadbandONE, LLC | 65.5K | 65.5K | 43 |
| AS19106US | ANDREWS - Andrews University | 65.5K | 1 | 2 |
| AS24US | AS24 - National Aeronautics and Space Administration | 65.5K | 1 | 2 |
| AS7281US | BOOZ-AS - Booz Allen Hamilton Inc. | 65.5K | — | 1 |
| AS14183US | UALR-ASN - University of Arkansas at Little Rock | 65.5K | 1 | 2 |
| AS10755US | DARTMOUTH-AS - Dartmouth College | 65.5K | 65.5K | 2 |
| AS15337US | WRHARPER - Wm. Rainey Harper College | 65.5K | — | 1 |
| AS32417US | ELONU-AS - Elon University | 65.5K | — | 1 |
| AS401248US | JTSA-NYC - The Jewish Theological Seminary of America | 65.5K | — | 1 |
| AS33608US | HOOD-COLLEGE - Hood College | 65.5K | — | 1 |