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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,163 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,240 |
| 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 | 373 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,656 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,941 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,379 |
| SANMARINOUSD - San Marino Unified School District |
| 1K |
| — |
| 1 |
| AS14013US | EPSON-ROBOTS - EPSON America (Factory Automation/Robotics) | 1K | — | 1 |
| AS22885US | ASI - ADVERTISING SPECIALTY INSTITUTE, INC. | 1K | — | 3 |
| AS55281US | ECHO-GLOBAL - Echo Global Logistics | 1K | — | 4 |
| AS398437US | HOT-SPRINGS-TEL-01 - Hot Springs Telephone Company | 1K | 4.1K | 2 |
| AS46745US | GCSSK12NET - Gainesville City Schools | 1K | — | 1 |
| AS10634US | INET-COMPUTERS-INC - iNET Computers, Inc. | 1K | — | 3 |
| AS16520US | SCFEDERAL - South Carolina Federal Credit Union | 1K | — | 2 |
| AS46099US | KHENET - Kaplan Higher Education Corporation | 1K | — | 1 |
| AS62861US | RAYCOM-MEDIA-RSA - Gray Media, Inc. | 1K | — | 4 |
| AS36072US | 12COMMAS - 12 Commas LLC | 1K | 256 | 2 |
| AS394320US | INLNE - Inline Network Integration | 1K | — | 1 |
| AS13382US | BSG-ORD - Business Solutions Group, LLC | 1K | 256 | 2 |
| AS36015US | MRHS - Maury Regional Hospital | 1K | — | 1 |
| AS31951US | NASADSN-AS - NASA Deep Space Network (DSN) | 1K | — | 1 |
| AS23281US | CITY-OF-SACRAMENTO - City of Sacramento | 1K | — | 4 |
| AS17374US | WALMART - Wal-Mart Stores, Inc. | 1K | — | 3 |
| AS53504US | PULSENET-OPTIBAND - PulseNET | 1K | — | 4 |
| AS53617US | ECSFI - ECS Financial Services, Inc. | 1K | — | 2 |
| AS32478US | ITVOCAL - IT Vocal LLC | 1K | 4.1K | 2 |
| AS396862US | NMHS - Nebraska Methodist Health System, Inc. | 1K | — | 3 |
| AS32511US | ASANTEHEALTHSYSTEM-1 - Asante Health System | 1K | — | 1 |
| AS54748US | HUDSONBAY - Hudson Bay Capital Management LP | 1K | — | 4 |
| AS62909US | FCCU-ASN1 - FIRST COMMUNITY CREDIT UNION | 1K | 256 | 4 |
| AS31874US | LPS-4 - Black Knight IP Holding Company, LLC | 1K | — | 3 |
| AS400456US | DREAMWIRE - ITDreamwire | 1K | — | 1 |
| AS17294US | BI-631 - Build io, Inc. | 1K | — | 1 |
| AS40725US | UNIVERSAL-CONNECTIVITY-BGP - Universal Connectivity, Inc. | 1K | — | 4 |
| AS18976US | UNICOM-SYSTEMS-INC - UNICOM Systems Inc. | 1K | — | 4 |
| AS399256US | FUSD-ASN - Fontana Unified School District | 1K | — | 3 |
| AS11521US | MODUSLINK - ModusLink Corporation | 1K | — | 4 |
| AS25794US | DPCLAX - Dairyland Power Cooperative | 1K | — | 4 |
| AS33538US | MIMECAST-CA - Mimecast North America Inc | 1K | 2 | 4 |
| AS53548US | ORCASONLINE1 - Orcas Online, Inc | 1K | — | 4 |
| AS23290US | ELPASO-COUNTY-GOVERNMENT-COLORADO - El Paso County | 1K | — | 1 |
| AS395746US | TURN5-DC - Turn 5, Inc. | 1K | 256 | 3 |
| AS53944US | JJT-GULFTECH - J & J Telecommunications | 1K | — | 1 |
| AS22891US | STANDARDINSURANCE - Standard Insurance Company | 1K | — | 4 |
| AS54954US | INFOSTRUCTURES - INFOSTRUCTURES, INC. | 1K | — | 1 |
| AS393307US | CHSNJ-ASN1 - Cooper University Hospital | 1K | — | 2 |
| AS393587US | ULTATG - Ulta, Inc. | 1K | — | 4 |
| AS395213US | RAPID7 - Rapid7 Inc | 1K | 1 | 5 |
| AS25714US | KCSR-ASN - The Kansas City Southern Railway Co. | 1K | — | 3 |
| AS20441US | SL-2182-20441 - SAGILITY LLC | 1K | — | 1 |
| AS400694US | RPTA-ASN-01 - Valley Metro | 1K | — | 3 |
| AS32258US | VELOCITY-FUSION - Velocity Fusion | 1K | — | 4 |
| AS33062US | ALEXLEE-INC - ALEX LEE INC | 1K | — | 2 |