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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 | 24,555 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,354 |
| 512 |
| — |
| 1 |
| AS23434US | SURS - State Universities Retirement System | 512 | — | 2 |
| AS31955US | ASN-CONNEXUSENERGY - CONNEXUS ENERGY | 512 | — | 2 |
| AS393764US | APOG-HUNTINGDON-COLLEGE - Apogee Telecom Inc. | 512 | — | 2 |
| AS398188US | COUNTY-OF-PASSAIC - County of Passaic | 512 | — | 1 |
| AS14353US | WIX-IT - Wix.Com, Inc. | 512 | — | 2 |
| AS33461US | COMMUNITY-FOUNDATION-OF-NORTHWEST-INDIANA - COMMUNITY FOUNDATION OF NW INDIANA | 512 | — | 2 |
| AS19102US | PCI-TW - Patterson Companies, Inc. | 512 | — | 2 |
| AS401847US | 321-WLCS-ASN - 321 Communications, Inc. | 512 | 2 | 4 |
| AS16601US | CBTECH-ASN - Calexico Business Technologies | 512 | 65.5K | 4 |
| AS36525US | ALLEGIANCE-HEALTH - ALLEGIANCE HEALTH SERVICES | 512 | — | 2 |
| AS18584US | ANKURA-ASN - Ankura Consulting Group LLC | 512 | — | 2 |
| AS26700US | FORTRESSAS - FORTRESS INVESTMENT GROUP LLC | 512 | — | 2 |
| AS399712US | ENTEFY-ASN - Entefy Inc. | 512 | — | 2 |
| AS400159US | WAYFAIR-CAMPUS - Wayfair LLC | 512 | — | 1 |
| AS398063US | ADVISOR360-ASN - Advisor360 LLC | 512 | — | 2 |
| AS400007US | OWNADTECH - OwnAdtech INC | 512 | — | 2 |
| AS26337US | OIS1 - Oso Grande IP Services, LLC | 512 | — | 2 |
| AS27507US | XTREME-INTERNET - Xtreme Internet | 512 | — | 2 |
| AS18870US | GWB - Great Western Bank | 512 | — | 2 |
| AS401365US | SMF-ASN-01 - Saia Motor Freight Line, LLC | 512 | — | 2 |
| AS401755US | TSI-BGP - Think Smart Group, Inc. | 512 | — | 1 |
| AS63047US | KMHA - Konica Minolta Healthcare Americas, Inc. | 512 | — | 2 |
| AS397509US | FLOOR-AND-DECOR - Floor and Decor Outlets of America, Inc. | 512 | — | 2 |
| AS30639US | CMCFLEX - Computer Marketing Corporation | 512 | — | 2 |
| AS55157US | COLLIERS - Colliers International | 512 | — | 2 |
| AS36513US | BRETSA - BRETSA | 512 | — | 2 |
| AS397741US | CITYOFDUBUQUE-01 - City Of Dubuque | 512 | — | 2 |
| AS54365US | DIGITAL-INNOVATIONS-BY-RYAN - Digital Innovations by Ryan | 512 | 256 | 3 |
| AS19063US | ASCENSION-OKTUL - Ascension Technologies | 512 | — | 2 |
| AS22585US | MVS-CLOUD - MVS Cloud Inc. | 512 | — | 2 |
| AS394877US | BCH - Blythedale Children's Hospital | 512 | — | 2 |
| AS64288US | MASONITE - Masonite Corporation | 512 | — | 2 |
| AS30484US | PAHOUSEGOP - Pennsylvania House of Representatives, Republican IT Services | 512 | — | 2 |
| AS399346US | STMU-SATX-01 - St Mary's University | 512 | — | 2 |
| AS394651US | AKUNA-BGP - Akuna Capital LLC | 512 | — | 2 |
| AS29868US | DRW-HOLDINGS - DRW Holdings, LLC | 512 | — | 2 |
| AS398780US | BEC - Bluebonnet Electric Cooperative, Inc. | 512 | — | 2 |
| AS25762US | BOCUSA - Bank of China | 512 | — | 2 |
| AS10402US | HSD2-AS - Harrison School District Two | 512 | — | 1 |
| AS32306US | FALCK-MOBILE-HEALTH-CORP - Falck USA, Inc. | 512 | — | 2 |
| AS393716US | INTRADA-AS000 - Intrada Technologies, Inc | 512 | — | 1 |
| AS54529US | LCRC-AS - Louisiana Cancer Research Center | 512 | — | 2 |
| AS6508US | VANTIVA - Vantiva USA Shared Services Inc. | 512 | — | 2 |
| AS22151US | BREAN-CAPITAL - Brean Murray & Co., Inc. | 512 | — | 2 |
| AS399965US | UTAH-JAZZ - Jazz Basketball Investors LLC | 512 | — | 2 |
| AS33405US | HESS - Hess Corporation | 512 | — | 1 |