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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,525 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,309 |
| 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.
32,245 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 991 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 512 |
| 1 |
| 2 |
| AS54204US | WVTM-TV - HEARST CORPORATION | 512 | — | 2 |
| AS6508US | VANTIVA - Vantiva USA Shared Services Inc. | 512 | — | 2 |
| AS26075US | MCUNY-01 - Municipal Credit Union of NY | 512 | — | 2 |
| AS396890US | CITYOFREDMOND - City of Redmond Washington | 512 | — | 2 |
| AS401844US | GSH-AS - Good Samaritan Hospital | 512 | — | 1 |
| AS36766US | KETV-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS393302US | SJC-AN - St. John's College | 512 | — | 2 |
| AS31973US | WPS-1765DC - Wisconsin Physicians Service Insurance Corp. | 512 | — | 2 |
| AS398125US | EXODUSPOINT-CAPITAL-MANAGEMENT-US - ExodusPoint Capital Management, L.P. | 512 | — | 2 |
| AS30255US | NYGC - New York Genome Center, Inc. | 512 | — | 2 |
| AS402106US | ACDEV - ACDev LLC | 512 | 258 | 5 |
| AS398063US | ADVISOR360-ASN - Advisor360 LLC | 512 | — | 2 |
| AS395955US | INTERLINE-BRANDS-INC - Interline Brands, Inc. | 512 | — | 2 |
| AS62996US | OMR-01 - Unwin Company | 512 | — | 1 |
| AS36513US | BRETSA - BRETSA | 512 | — | 2 |
| AS19102US | PCI-TW - Patterson Companies, Inc. | 512 | — | 2 |
| AS396160US | ROYAL-REALITY-CORP - Royal Realty Corp. | 512 | — | 2 |
| AS397259US | PIRATEL-LA1 - Piratel LLC | 512 | — | 2 |
| AS17342US | HCCFL-AS - Hillsborough Community College | 512 | — | 2 |
| AS1003US | ANDREWNET - andrewnet | 512 | 11 | 13 |
| AS400314US | GULF-WINDS-1 - Gulf Winds Credit Union | 512 | — | 2 |
| AS19656US | LOCAL-SECURE-DATA - Lehigh Secure Data LLC | 512 | 65.5K | 3 |
| AS54728US | DATAPLANE - DataPlane.org | 512 | 1 | 3 |
| AS396893US | WWMS - mitelefono.com | 512 | 65.5K | 4 |
| AS394127US | ALACRITYSERVICES - Alacrity Services | 512 | — | 2 |
| AS619US | DNIC-ASBLK-00616-00665 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS55181US | KEUKA-COLLEGE - Keuka College | 512 | — | 2 |
| AS395824US | BEPCOLP - Bepco, L.P. | 512 | — | 2 |
| AS395410US | USALLIANCE-FCU-411 - USAlliance Federal Credit Union | 512 | — | 2 |
| AS32443US | US-REPSOLSERVICESCOMPANY - Repsol Services Company | 512 | — | 2 |
| AS398298US | NETSTRATUM - Netstratum | 512 | — | 2 |
| AS13740US | HYPERNET-AS - 1stel, Inc. | 512 | — | 2 |
| AS62517US | TAIWAN-TELECOM - Taiwan Telecom | 512 | 1 | 3 |
| AS46207US | STATE-OF-LOUISIANA-JUDICIAL-BRANCH - State of Louisiana Supreme Court - JA/CMIS | 512 | — | 1 |
| AS400141US | PATTERSONVILLE-TELCO-OHIO - Pattersonville Telephone Co | 512 | — | 1 |
| AS36519US | CISCO-TTNA - CISCO SYSTEMS, INC. | 512 | 1 | 2 |
| AS30707US | YABOIII - YaBoiii | 512 | — | 2 |
| AS398447US | OHANACRAFT - OHANACRAFT, LLC | 512 | 4 | 6 |
| AS400894US | HUMBLEISD - Humble Independent School District | 512 | — | 2 |
| AS5329US | DNIC-ASBLK-05120-05376 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS13460US | EARTHCAM - EarthCam, Inc. | 512 | 2 | 4 |
| AS62841US | CITY-OF-NEW-ORLEANS - City of New Orleans | 512 | — | 1 |
| AS18920US | HEI - Hawaiian Electric Industries, Inc. | 512 | — | 2 |
| AS398009US | PRAIRIEHILLS - Prairie Hills Wireless LLC | 512 | — | 2 |
| AS18584US | ANKURA-ASN - Ankura Consulting Group LLC | 512 | — | 2 |
| AS18798US | INTERNET-SERVICES - Encore Group (USA) LLC | 512 | — | 2 |