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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. | 211.1M | 21,138 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,244 |
| 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 | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,674 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,951 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,417 |
| 256 |
| 5 |
| 5 |
| AS7124US | DACSCX-US - DACS-IX | 256 | 7 | 8 |
| AS399897US | FULLSPANSOLUTIONS-AS01 - Full Span Solutions LLC | 256 | — | 1 |
| AS394240US | AS1666 - City of Walnut Creek | 256 | — | 1 |
| AS397774US | CBDL-DFW1-AS1 - Covered Bridge Data, LLC | 256 | 4.1K | 2 |
| AS398986US | SECUREDGG - Gameserverkings | 256 | — | 1 |
| AS19593US | SMITHDRUGCOMPANY - Smith Drug Company | 256 | — | 1 |
| AS401219US | COCHISE-CONNECT - Cochise Connect LLC | 256 | 4.1K | 2 |
| AS19712US | ZOLL-CHELM - ZOLL Medical Corporation | 256 | 1 | 2 |
| AS393722US | SUMMT-ORTHO - Summit Ortho | 256 | — | 1 |
| AS395568US | COMFEDCU - Communication Federal Credit Union | 256 | 257 | 3 |
| AS393231US | CMH - CLINTON MEMORIAL HOSPITAL | 256 | — | 1 |
| AS7380US | AVANTCREDIT - Avant, Inc. | 256 | — | 1 |
| AS394910US | SUNEDISON-SEMI-US - MEMC LLC | 256 | — | 1 |
| AS17217US | INDYIX-SERVICES - Indianapolis Internet Exchange, Inc. | 256 | 16 | 2 |
| AS46740US | SWISHER-INTERNATIONAL - Swisher International, Inc. | 256 | — | 1 |
| AS1387US | ANSBB-ASNNET-2 - Verizon Business | 256 | 1 | 2 |
| AS205602US | BRINSTAR Seamus Caveney | 256 | 259 | 5 |
| AS214388US | Cloudnet-Technologies-LLC Cloudnet Technologies L.L.C. | 256 | — | 1 |
| AS14404US | CITY-OF-WICHITA-1 - City of Wichita | 256 | 65.5K | 2 |
| AS396241US | CSS-ARIN-1 - Unison Software, Inc | 256 | — | 1 |
| AS398140US | WBGAMES-SLC - WB Games Inc. | 256 | — | 1 |
| AS22124US | FINNEGANBGP - Finnegan, Henderson, Farabow, Garrett &Dunner, LLP | 256 | — | 1 |
| AS16434US | HCM - Hitachi Cable Manchester, INC | 256 | — | 1 |
| AS13930US | CMH - The Children's Mercy Hospital | 256 | — | 1 |
| AS394139US | MMH - Madison Co Memorial Hospital | 256 | — | 1 |
| AS394725US | CALICO - Calico Life Sciences LLC | 256 | — | 1 |
| AS53516US | ROSENBERG-AND-ESTIS - Rosenberg & Estis P.C. | 256 | — | 1 |
| AS40482US | STHI-AS - Secure Technology Hawaii | 256 | — | 1 |
| AS62773US | WEISCAPITAL - Weis Capital, Inc | 256 | — | 1 |
| AS400272US | GCYAZ - Gowan Company, L.L.C. | 256 | — | 1 |
| AS22222US | OMAHASTEAKS - Omaha Steaks | 256 | — | 1 |
| AS23437US | INFINITY-FL - Infinity Broadband | 256 | 96 | 3 |
| AS400052US | GUTHRIE-IA - Guthrie County | 256 | — | 1 |
| AS396327US | SENECA-COUNTY - Buckeye IT Services LLC | 256 | — | 1 |
| AS397795US | THEFIREHORN-NET - The Fire Horn, Inc. | 256 | 2 | 3 |
| AS1786US | AIXSERV-AS - IBM | 256 | — | 1 |
| AS23401US | US-TOOL-GRINDING - US Tool Group | 256 | — | 1 |
| AS13406US | MCCFL - State College of Florida, Manatee-Sarasota | 256 | — | 1 |
| AS7136US | LATINO - Latino Communications Corporation | 256 | — | 1 |
| AS398155US | WBR-LA-01 - West Baton Rouge Parish Council | 256 | — | 1 |
| AS10661US | SF-FIN-LP - Steadfast Financial LP | 256 | — | 1 |
| AS25810US | NLHA-INET-AS - The New London Hospital Association, Inc | 256 | — | 1 |
| AS22755US | DAVISVISION-ASN - Davis Vision Inc. | 256 | — | 1 |
| AS401314US | GOLDENVM-LLC - GoldenVM LLC | 256 | — | 1 |
| AS395190US | PFGC-INET - PERFORMANCE FOOD GROUP, Inc. | 256 | — | 1 |
| AS19831US | STAMPIN - StampinUp | 256 | — | 1 |