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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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 | 24,543 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,304 |
| 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.
32,174 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 | 3,884 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,999 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,345 |
| MSMC-FL - Mount Sinai Medical Center of Florida, Inc. |
| 256 |
| — |
| 1 |
| AS401657US | PHMV-AS-1 - DuBois Regional Medical Center | 256 | — | 1 |
| AS22425US | FL-AS - Finish Line | 256 | — | 1 |
| AS32209US | MOMENTUM-ACCESS-EU - Momentum Telecom, Inc. | 256 | — | 1 |
| AS214478US | AS-SAKURACLOUDS Sakura Clouds LLC | 256 | 4 | 5 |
| AS46190US | KRMC - Kingman Regional Medical Center | 256 | — | 1 |
| AS402643US | CBL-177 - CloudNest | 256 | — | 1 |
| AS397736US | BEACON-FCU - Beacon Federal Credit Union | 256 | 16 | 2 |
| AS393940US | ULTRADENT-PRODUCTS - Ultradent Products Inc | 256 | — | 1 |
| AS36603US | ARC-INTERNET - AIRLINES REPORTING CORPORATION | 256 | — | 1 |
| AS398117US | WILSON-COLLEGE - Wilson College | 256 | — | 1 |
| AS398802US | HINDS-MCCB - Hinds Community College | 256 | — | 1 |
| AS393723US | GCLS-BGP-01 - Greenville County Library System | 256 | — | 1 |
| AS32992US | ITECHTOOL-ASN-SF - ITechTool Incorporated | 256 | — | 1 |
| AS19534US | LCTC-AS1 - Lee County Tax Collector | 256 | — | 1 |
| AS400538US | QSI-NETWORK-SOLUTIONS - QSi Network Solutions | 256 | — | 1 |
| AS27335US | BLUERIDGE-01 - Blueridge Capital, L.L.C. | 256 | — | 1 |
| AS40072US | TCSG - Technical College System of Georgia | 256 | — | 1 |
| AS21934US | VITAC - VITAC Corporation | 256 | — | 1 |
| AS398147US | COLLEGEOFTHEMAINLAND-1 - College of the Mainland | 256 | — | 1 |
| AS399463US | UCOMTEL-02 - UComtel Inc | 256 | — | 1 |
| AS397260US | CYNAXA - Cynaxa LLC | 256 | — | 1 |
| AS399442US | OLELO-COMMUNITY-MEDIA-01 - OLELO COMMUNITY MEDIA | 256 | — | 1 |
| AS18957US | TAXRESOURCES-1 - TaxAudit.com | 256 | — | 1 |
| AS54336US | HANSON-BRIDGETT-LLP - Hanson Bridgett LLP | 256 | — | 1 |
| AS6434US | PIERPONTSECURITIES - Amherst Pierpont Securities | 256 | — | 1 |
| AS55187US | AC-CHARTER-WINDTREAM - Assumption University | 256 | — | 1 |
| AS400189US | PACKETCOVE-AS400189 - PacketCove, LLC | 256 | — | 1 |
| AS400761US | MUN-NIDR - PIMCO | 256 | — | 1 |
| AS36261US | CLEAR-155 - Clearbridge Advisors, LLC | 256 | — | 1 |
| AS396215US | CCBCC-FL - Charlotte County Board of County Commissioners | 256 | — | 1 |
| AS63354US | STLZOO - Saint Louis Zoo | 256 | — | 1 |
| AS133052US | FXCM-ASIA-AS-AP - FX Corporate LLC | 256 | — | 1 |
| AS397891US | COLUMBUSHOSP-AS-01 - Columbus Community Hospital, Inc. | 256 | — | 1 |
| AS29785US | DACSIX-CENTRAL - DACS-IX | 256 | 65 | 6 |
| AS399695US | MARSHALL-COUNTY-01 - Marshall County | 256 | — | 1 |
| AS30416US | WCS - Wildlife Conservation Society | 256 | — | 1 |
| AS30098US | INFB-ASN - Farm Bureau Insurance | 256 | — | 1 |
| AS32518US | BMGL-AS - Just the News | 256 | — | 1 |
| AS402902US | JC-FLOAT-01 - Jason | 256 | 5 | 6 |
| AS46610US | WARREN-COUNTY-TELECOMMUNICATIONS - Warren County Board of Commissioners | 256 | — | 1 |
| AS11981US | AS-REUBENONLINE - Yolo Risk Management LLC | 256 | 256 | 2 |
| AS396152US | MC-AS - The Monroe Clinic, Inc. | 256 | 1 | 2 |
| AS395342US | EXETERHOSPITAL - Exeter Hospital | 256 | — | 1 |
| AS32343US | STAGINGLAB - BOK Financial Corporation | 256 | — | 1 |
| AS46827US | SPECTRA-LABORATORIES-EAST - Spectra Laboratories | 256 | — | 1 |
| AS395488US | ABSOLUTE-TECHNOLOGY-CONSULTING - Absolute Computing Solutions | 256 | — | 1 |