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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 |
| 65.5K |
| — |
| 1 |
| AS1983US | BERNALILLO - Bernalillo County | 65.5K | — | 1 |
| AS32071US | WKU-AS - Western Kentucky University | 65.5K | — | 1 |
| AS401974US | VVUSD-157-233 - Val Verde Unified School District | 65.5K | — | 1 |
| AS6150US | NCIFCRF - National Cancer Institute | 65.5K | — | 1 |
| AS11214US | UNIVERSITY-OF-NORTH-FLORIDA - University of North Florida | 65.5K | 16 | 2 |
| AS36390US | TRI-C-AS - Cuyahoga Community College | 65.5K | — | 1 |
| AS23309US | CCCOE-NET - Contra Costa County Office of Education | 65.5K | 65.5K | 2 |
| AS54216US | GORE-NETWORK - W. L. Gore & Associates, Inc. | 65.5K | — | 1 |
| AS33434US | HAMILTON-COLLEGE - Hamilton College | 65.5K | — | 1 |
| AS11482US | CANISIUS-COLLEGE - Canisius College | 65.5K | — | 1 |
| AS1289US | COLGATE-UNIVERSITY - Colgate University | 65.5K | 257 | 3 |
| AS26539US | GIANT-FOOD-INC - Ahold U.S.A., Inc. | 65.5K | — | 1 |
| AS401124US | SUNY-DELHI-01 - State University of New York College of Technology at Delhi | 65.5K | — | 1 |
| AS36091US | SCAQMD-ASN - South Coast Air Quality Management District | 65.5K | — | 1 |
| AS55282US | SUNYCANTON-AS - State University of New York College of Technology at Canton | 65.5K | — | 1 |
| AS32125US | WHEATON-COLLEGE - Wheaton College | 65.5K | — | 1 |
| AS53449US | OEC-FIBER - OEC Fiber | 65.5K | 65.5K | 6 |
| AS14706US | MBARI-MAIN - Monterey Bay Aquarium Research Institute | 65.5K | — | 1 |
| AS22828US | ASN-FDA - United States Food and Drug Administration | 65.5K | 16 | 2 |
| AS19106US | ANDREWS - Andrews University | 65.5K | 1 | 2 |
| AS13783US | RADFORD-UNIV-AS - Radford University | 65.5K | — | 1 |
| AS30703US | SHSC-1-AS - State University of New York, Health Science Center at Syracuse | 65.5K | — | 2 |
| AS14486US | OXY-AS - Occidental College | 65.5K | — | 1 |
| AS24US | AS24 - National Aeronautics and Space Administration | 65.5K | 1 | 2 |
| AS3795US | BRYNMAWR - Bryn Mawr College | 65.5K | — | 1 |
| AS40591US | BUCKNELLUNIVERSITY - Bucknell University | 65.5K | 1 | 4 |
| AS46335US | PVAMU - PRAIRIE VIEW A&M UNIVERSITY | 65.5K | — | 1 |
| AS13759US | WILKES-MULTI-HOME1 - Wilkes University | 65.5K | — | 1 |
| AS11417US | NIU - Northern Illinois University | 65.5K | — | 1 |
| AS14433US | SUNY-OSWEGO-ASN - State University of New York - Oswego | 65.5K | — | 1 |
| AS14529US | SJU-5600 - Saint Joseph's University | 65.5K | — | 1 |
| AS396087US | SMCM - St. Mary's College of Maryland | 65.5K | — | 1 |
| AS53604US | UAPB-AS - University of Arkansas at Pine Bluff | 65.5K | — | 1 |
| AS353US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 65.5K | — | 1 |
| AS398451US | RHIT - Rose-Hulman Institute of Technology, Inc | 65.5K | 1 | 2 |
| AS46543US | UMB - University of Maryland, Baltimore | 65.5K | — | 1 |
| AS22174US | NET-SUC-TECH-ALF - State University of New York College of Technology at Alfred | 65.5K | — | 1 |
| AS5656US | ACCESSUS-DOM - accessU.S./BASENet | 65.5K | — | 5 |
| AS6522US | LEHIGH - Lehigh University | 65.5K | — | 1 |
| AS19148US | LEASEWEB-USA-PHX - Leaseweb USA, Inc. | 65.3K | 65.6K | 47 |
| AS14737US | CCCOES - Colorado Community College and Occupational Education System | 65K | — | 8 |
| AS36086US | TELX-LEGACY - Telx | 64.5K | 41.7K | 153 |
| AS204765US | PG8GLOBAL PG8 Global LLC | 64.5K | — | 84 |
| AS19151US | BBO-1 - BroadbandONE, LLC | 64.3K | — | 41 |
| AS22653US | GLOBALCOMPASS - Cyber Wurx LLC | 64.3K | 69.6K | 21 |
| AS5663US | EDCNET - Department of Interior United States Geological Survey | 64K | — | 13 |