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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 | 21,141 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 638 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,234 |
| 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 | 368 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 48.4M | 3,591 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,937 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,476 |
| 2.8K |
| — |
| 11 |
| AS401984US | CUSTOMER-OPTUS1 - Tomorin Network, LLC | 2.8K | — | 5 |
| AS54913US | CLOUDWEBMANAGE-CANADA - Kamatera, Inc. | 2.8K | 2 | 13 |
| AS25905US | FIRESERVE - FireServe, LLC | 2.8K | 65.8K | 6 |
| AS1405US | CAELUS-AS - Caelus Technology LLC | 2.8K | 9K | 15 |
| AS18715US | NYPA - New York Power Authority | 2.8K | — | 11 |
| AS26962US | IPROT - IPROT, Inc. | 2.8K | — | 11 |
| AS6404US | FACTSET - FactSet Research Systems, Inc. | 2.8K | — | 10 |
| AS15205US | NCPDAS - Nassau County Police Department | 2.8K | — | 4 |
| AS17089US | CINCCHILDRENS - Cincinnati Children's Hospital Medical Center | 2.8K | — | 7 |
| AS25673US | RMSSLB - Cellnet Innovations, Inc. | 2.8K | — | 6 |
| AS964US | IONSWITCH-NW - IonSwitch NW, LLC | 2.8K | 131.1K | 10 |
| AS54246US | AFNI-INTERNET - AFNI, Inc. | 2.8K | — | 4 |
| AS14487US | WIND-RIVER-INTENET - Wind River Internet | 2.8K | 65.5K | 6 |
| AS16640US | SILICON-VALLEY-BANK - First-Citizens Bank & Trust Company | 2.8K | — | 11 |
| AS19477US | FLYINGJ - F J Management Inc. | 2.8K | — | 11 |
| AS1086US | GET-REAL-CABLE-ASN - Get LLC | 2.8K | — | 8 |
| AS35995US | TWITTER - Twitter Inc. | 2.8K | — | 6 |
| AS393347US | IFNCO - TollFreeForwarding.com | 2.8K | — | 11 |
| AS400513US | IPIPE-INC - IPIPE International, Corp. | 2.8K | 256 | 9 |
| AS202756US | AS RFE/RL, INC. | 2.8K | — | 11 |
| AS393460US | CNSP-ASN - NMSURF | 2.8K | — | 5 |
| AS26989US | HR-WORLD-HEADQUARTERS - H&R Block | 2.8K | — | 8 |
| AS398700US | CACTUS-INTERNATIONAL-INC - Cactus International, Inc. | 2.8K | 65.5K | 7 |
| AS12105US | GCN-001 - Global Enterprise Solutions, Inc. | 2.8K | — | 3 |
| AS63407US | TERRA-MULTI-HOMED - Terracon Consultants, Inc. | 2.8K | — | 10 |
| AS394749US | EQUINIX-SOLUTION-VALIDATION-CENTER - Equinix, Inc. | 2.8K | 5 | 16 |
| AS395535US | WEISS-INTERNET - Weiss Internet | 2.8K | — | 11 |
| AS22317US | F5-NETWORKS - F5, Inc. | 2.8K | 13 | 24 |
| AS397780US | ALMA-COMMUNICATIONS - Alma Telephone Company | 2.8K | — | 4 |
| AS10340US | TELE-TECH - TELE-TECH CO. INC. | 2.8K | — | 5 |
| AS56443US | IWL-44-56443 - IP WAY LLC | 2.8K | — | 11 |
| AS15071US | BAX-BGP - BAX GLOBAL | 2.8K | — | 5 |
| AS393526US | NTS-BORGER-01 - Vexus Fiber | 2.6K | — | 6 |
| AS20231US | TWC-20231-NE-KS-C3 - Charter Communications Inc | 2.6K | 288 | 4 |
| AS22181US | IVNET - IV NET, LLP | 2.6K | — | 4 |
| AS3576US | AS-HODGSON-RUSS-NET - Hodgson Russ LLP | 2.6K | — | 7 |
| AS394723US | FCS-AS-1 - Fulton County Schools | 2.6K | — | 3 |
| AS393240US | BTWI-WIRELESS-INTERNET - BTWI Wireless Internet LLC | 2.6K | — | 3 |
| AS397370US | ACADIANA-WIRELESS - ACADIANA WIRELESS LLC | 2.6K | — | 6 |
| AS1858US | DISN-PILOTNET4 - RTX BBN Technologies, Inc. | 2.6K | — | 3 |
| AS46970US | ALLBANDCOMMUNICATIONS - Allband Communications Cooperative | 2.6K | — | 6 |
| AS47065US | PEERING-RESEARCH-TESTBED-USC-UFMG-AS47065 - USC / UFMG PEERING Research Testbed | 2.6K | 150 | 157 |
| AS398879US | SUSQ-BROADBAND - Susquehanna Broadband, LLC | 2.6K | — | 4 |
| AS36844US | SAWS---SAN-ANTONIO-WATER-SYSTEM - San Antonio Water System | 2.6K | — | 10 |
| AS32393US | BDN - Brown Dog Networks | 2.6K | — | 4 |
| AS396944US | UNFI - UNFI | 2.6K | — | 7 |