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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 |
| AS22949US | GRINNE-AS - Grinnell College | 65.5K | — | 1 |
| AS46905US | UMASS-LOWELL - University of Massachusetts - Lowell | 65.5K | — | 1 |
| AS19106US | ANDREWS - Andrews University | 65.5K | 1 | 2 |
| AS10294US | CCCD-AS - Coast Community College District | 65.5K | — | 1 |
| AS98US | ROCKEFELLER-AS - The Rockefeller University | 65.5K | — | 1 |
| AS19342US | TRINITY-UNIVERSITY - Trinity University | 65.5K | — | 1 |
| AS10755US | DARTMOUTH-AS - Dartmouth College | 65.5K | 65.5K | 2 |
| AS62810US | SUNY-ONEONTA - SUNY Oneonta | 65.5K | 65.5K | 2 |
| AS7281US | BOOZ-AS - Booz Allen Hamilton Inc. | 65.5K | — | 1 |
| AS394003US | UMASSD - University of Massachusetts Dartmouth | 65.5K | — | 1 |
| AS25776US | UNIV-OF-OKLAHOMA - University of Oklahoma | 65.5K | — | 1 |
| AS2936US | NERSC - National Energy Research Scientific Computing Center | 65.5K | 16 | 2 |
| AS6056US | COLBY - Colby College | 65.5K | — | 1 |
| AS27616US | AS-NEWSCHOOL - The New School | 65.5K | — | 1 |
| AS22245US | WICHITA-STATE-U - Wichita State University | 65.5K | — | 1 |
| AS2640US | AMESLAB-AS - Ames Laboratory | 65.5K | 1 | 2 |
| AS32818US | CSUOHIO-AS - Cleveland State University | 65.5K | — | 1 |
| AS398060US | AU-158-93 - Augusta University | 65.5K | — | 1 |
| AS23122US | DSU - Dakota State University | 65.5K | — | 1 |
| AS27219US | SUNY-CORTLAND - SUNY College at Cortland | 65.5K | — | 1 |
| AS20239US | MNPOWER-ASN - ALLETE, Inc. | 65.5K | — | 1 |
| AS13326US | TUFTS-UNIVERSITY - Tufts University | 65.5K | 65.5K | 2 |
| AS27405US | PSC - University System of New Hampshire | 65.5K | — | 1 |
| AS33703US | HOFSTRA-UNIVERSITY - Hofstra University | 65.5K | 16 | 3 |
| AS47090US | SCLHS-47090 - Intermountain Health Care, Inc. | 65.5K | — | 1 |
| AS63102US | MESSA-AS - Michigan Education Special Services Association | 65.5K | — | 1 |
| AS22828US | ASN-FDA - United States Food and Drug Administration | 65.5K | 16 | 2 |
| AS36704US | CSM-AS - Colorado School of Mines | 65.5K | — | 1 |
| AS15119US | SOUTHERN-ILLINOIS-UNIVERSITY - Southern Illinois University Carbondale | 65.5K | — | 1 |
| AS40591US | BUCKNELLUNIVERSITY - Bucknell University | 65.5K | 1 | 4 |
| AS30703US | SHSC-1-AS - State University of New York, Health Science Center at Syracuse | 65.5K | — | 2 |
| AS2705US | BJCHE-1 - BJC HEALTH SYSTEM | 65.5K | — | 1 |
| AS40112US | OPPD-AS - Omaha Public Power District | 65.5K | — | 1 |
| AS401974US | VVUSD-157-233 - Val Verde Unified School District | 65.5K | — | 1 |
| AS33434US | HAMILTON-COLLEGE - Hamilton College | 65.5K | — | 1 |
| AS21897US | VIRTUA-HEALTH - Virtua Health | 65.5K | — | 1 |
| AS26539US | GIANT-FOOD-INC - Ahold U.S.A., Inc. | 65.5K | — | 1 |
| AS15337US | WRHARPER - Wm. Rainey Harper College | 65.5K | — | 1 |
| AS3782US | SWARTHMORE - Swarthmore College | 65.5K | — | 1 |
| AS40127US | LMANET - Longwood Medical and Academic Area (LMA) | 65.5K | 65.5K | 2 |
| AS13327US | EKU - Eastern Kentucky University | 65.5K | — | 1 |
| AS11214US | UNIVERSITY-OF-NORTH-FLORIDA - University of North Florida | 65.5K | — | 1 |
| AS6112US | AUBURN - Auburn University | 65.5K | — | 1 |
| AS22178US | PA-SENATE - Senate of Pennsylvania | 65.5K | — | 1 |
| AS3777US | HAVERFORD - Haverford College | 65.5K | — | 1 |
| AS22174US | NET-SUC-TECH-ALF - State University of New York College of Technology at Alfred | 65.5K | — | 1 |