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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 | 23,661 |
| 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 |
| 236 |
| 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 | 4,490 |
| 512 |
| 17 |
| 4 |
| AS10985US | CURTIS-ASNUM - Curtis Instruments, Inc. | 512 | — | 2 |
| AS22588US | DOMIN-AS - DOMINION ENTERPRISES | 512 | — | 2 |
| AS11200US | REGISU - Regis University | 512 | — | 2 |
| AS16601US | CBTECH-ASN - Calexico Business Technologies | 512 | 65.5K | 4 |
| AS36772US | WPTZ - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS16854US | HCCU-2 - Hapo Community Credit Union | 512 | — | 2 |
| AS31973US | WPS-1765DC - Wisconsin Physicians Service Insurance Corp. | 512 | — | 2 |
| AS395702US | FIN-REC1 - Financial Recovery Services, Inc. | 512 | — | 2 |
| AS402091US | AYIT-01 - oknumbers inc | 512 | — | 2 |
| AS54636US | AS-DBIO - Rackspace Hosting | 512 | — | 1 |
| AS393746US | MAXHOST-IO - Amazing Creations and More LLC | 512 | 5 | 7 |
| AS40711US | INTERACTIVE-CHIC - Interactive Brokers LLC | 512 | — | 2 |
| AS2000US | IA-AS - Internet Awareness, Inc. | 512 | 1 | 3 |
| AS399221US | CONFIE - CONFIE ADMINISTRATIVE SERVICES, INC. | 512 | — | 2 |
| AS393555US | MOIT - City of Baltimore, Mayor's Office of Information Technology | 512 | — | 2 |
| AS21930US | INFORMATICA - Informatica LLC | 512 | — | 2 |
| AS399358US | ANTHROPIC - Anthropic, PBC | 512 | 2 | 3 |
| AS400141US | PATTERSONVILLE-TELCO-OHIO - Pattersonville Telephone Co | 512 | — | 1 |
| AS32946US | RPU-1892 - Rochester Public Utilities | 512 | — | 2 |
| AS395452US | SFPS - SFPS | 512 | — | 2 |
| AS19656US | LOCAL-SECURE-DATA - Lehigh Secure Data LLC | 512 | 65.5K | 3 |
| AS397548US | YTC907 - Yakutat Telecom Company, LLC | 512 | — | 1 |
| AS22276US | BANKUNITED - BankUnited NA | 512 | — | 2 |
| AS397155US | BOK-CENTER - BOK Center | 512 | — | 2 |
| AS395133US | MEDQUEST - MedQuest Associates, Inc. | 512 | — | 2 |
| AS32958US | HERITAGE-MEDICAL - Heritage Medical Associates, P.C. | 512 | — | 2 |
| AS40875US | CEMIAMI - CheckAlt Eras Inc | 512 | — | 2 |
| AS53323US | ION-CLEARWATER-TOC - The E.W. Scripps Company | 512 | — | 2 |
| AS398009US | PRAIRIEHILLS - Prairie Hills Wireless LLC | 512 | — | 2 |
| AS396205US | ALTRUISTA - Altruista Health, Inc | 512 | — | 2 |
| AS401668US | ROGERSNETWORKS - IPM Computers LLC | 512 | — | 2 |
| AS15276US | ZENDA-ASN - Zenda Telephone | 512 | — | 1 |
| AS399400US | INSPIRO-RELIA-US - Inspiro Relia US, Inc. | 512 | — | 2 |
| AS393719US | FIBERLINK - FiberLink | 512 | — | 2 |
| AS62907US | ZSCALER-CORP - ZSCALER, INC. | 512 | — | 2 |
| AS395508US | PORTS-AMERICA - Ports America Shared Services, Inc. | 512 | — | 2 |
| AS22392US | NGS-MOE - National Geographic Society | 512 | — | 2 |
| AS393939US | RUFFALO-NOEL-LEVITZ - RUFFALO NOEL LEVITZ LLC | 512 | — | 2 |
| AS394764US | CONFLUENCE-HEALTH - Confluence Health | 512 | — | 2 |
| AS36763US | WBBH - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS393418US | LOGIX-HEALTH - LOGIXHEALTH, INC | 512 | — | 2 |
| AS399346US | STMU-SATX-01 - St Mary's University | 512 | — | 2 |
| AS40056US | WGLV-20 - Westgate Resorts Ltd | 512 | — | 2 |
| AS396077US | UDR-US - UDR | 512 | — | 2 |
| AS398003US | TGNA-WOI - TEGNA Inc. | 512 | — | 2 |
| AS63157US | DBI-CMH9 - DSW Information Technology LLC. | 512 | — | 1 |