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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,173 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,668 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,949 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,365 |
| 512 |
| — |
| 2 |
| AS400516US | PARTSAUTHORITY - Parts Authority, LLC | 512 | — | 2 |
| AS395508US | PORTS-AMERICA - Ports America Shared Services, Inc. | 512 | — | 2 |
| AS396220US | AS-SNOPUD - Public Utility District No. 1 of Snohomish County | 512 | — | 1 |
| AS394803US | ANSI-ASN - American National Standards Institute | 512 | — | 2 |
| AS17342US | HCCFL-AS - Hillsborough Community College | 512 | — | 2 |
| AS46567US | BORDER-STATES-INDUSTRIES - Border States Industries | 512 | — | 2 |
| AS46505US | NIXIHOST - NixiHost.com Incorporated | 512 | 4.6K | 5 |
| AS13722US | DEFAULTROUTE - Default Route, LLC | 512 | 65.5K | 3 |
| AS395410US | USALLIANCE-FCU-411 - USAlliance Federal Credit Union | 512 | — | 2 |
| AS401552US | EUC - Example User Content, LLC | 512 | — | 2 |
| AS40875US | CEMIAMI - CheckAlt Eras Inc | 512 | — | 2 |
| AS399358US | ANTHROPIC - Anthropic, PBC | 512 | 2 | 3 |
| AS19656US | LOCAL-SECURE-DATA - Lehigh Secure Data LLC | 512 | 65.5K | 3 |
| AS53388US | TEFEXIA - Tefexia LC | 512 | 65.5K | 4 |
| AS64279US | TFSLAOC - Third Federal Savings and Loan Association of Cleveland | 512 | — | 2 |
| AS53784US | SNHHS - Southern New Hampshire Health System | 512 | — | 2 |
| AS54529US | LCRC-AS - Louisiana Cancer Research Center | 512 | — | 2 |
| AS46183US | MARYANNLIEBERTINC - MARY ANN LIEBERT, INC | 512 | — | 2 |
| AS27480US | MTC-CORP - Management & Training Corporation | 512 | — | 1 |
| AS63166US | TGNA-WHAS - TEGNA Inc. | 512 | — | 2 |
| AS401847US | 321-WLCS-ASN - 321 Communications, Inc. | 512 | 3 | 5 |
| AS27468US | GOODWILL-INDUSTRIES-OF-ORANGE-COUNTY - Goodwill Industries of Orange County | 512 | — | 2 |
| AS399965US | UTAH-JAZZ - Jazz Basketball Investors LLC | 512 | — | 2 |
| AS399221US | CONFIE - CONFIE ADMINISTRATIVE SERVICES, INC. | 512 | — | 2 |
| AS401156US | MCB - Metropolitan Commercial Bank | 512 | — | 2 |
| AS31973US | WPS-1765DC - Wisconsin Physicians Service Insurance Corp. | 512 | — | 2 |
| AS401183US | STEGEMEYER-NET - James Stegemeyer, Sole Proprietorship | 512 | 16 | 3 |
| AS29868US | DRW-HOLDINGS - DRW Holdings, LLC | 512 | — | 2 |
| AS22868US | BDPINTERNATIONAL - BDP International | 512 | — | 2 |
| AS393668US | STATEFAIRCC - State Fair Community College | 512 | 32 | 19 |
| AS394913US | AIRGRIDS - AirGrids | 512 | — | 2 |
| AS398447US | OHANACRAFT - OHANACRAFT, LLC | 512 | 4 | 6 |
| AS55249US | SAGE-ELSEG1 - Sage Publications, Inc. | 512 | — | 1 |
| AS63481US | BCRH - BAXTER COUNTY REGIONAL HOSPITAL, INC | 512 | — | 2 |
| AS22666US | GBHSD - Glenbrook High School District | 512 | — | 1 |
| AS46460US | KARMAK-NET - Karmak, Inc. | 512 | — | 1 |
| AS395633US | WSU-EVT-AS - Washington State University | 512 | — | 2 |
| AS396104US | KARMA-CORP-SVCS - Karma Automotive, LLC | 512 | — | 2 |
| AS36046US | BOTC - BOTC | 512 | — | 2 |
| AS19251US | NEPGROUPINC - NEP Group, Inc. | 512 | — | 2 |
| AS53793US | ACLI - ACLI | 512 | — | 2 |
| AS397473US | HTG-VOLARE-01 - HighPoint Technology Group, LLC | 512 | — | 2 |
| AS393323US | WATERFURNACE - Waterfurnace International, Inc | 512 | — | 2 |
| AS40178US | OCEANBLUE-CLOUD-US - OCEANBLUE CLOUD, INC. | 512 | — | 2 |
| AS396369US | CITYOFLUBBOCKTX - City of Lubbock | 512 | — | 2 |
| AS7818US | ASN-QUEENCREEK - Town of Queen Creek | 512 | — | 2 |