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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 | 3,139 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.2M | 21,162 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,243 |
| 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 | 3,670 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,950 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,372 |
| 256 |
| — |
| 1 |
| AS399017US | BADGERMETER-01 - Badger Meter Inc | 256 | — | 1 |
| AS7406US | PDX-DC - B&R Auto | 256 | — | 1 |
| AS33418US | EQUITABLE-INTERNET-INITATIVE - Detroit Community Technology Project | 256 | — | 1 |
| AS213154US | DAVIDC David Costantino | 256 | 19 | 5 |
| AS12095US | CNNX-01 - CONNEXUS CREDIT UNION | 256 | — | 1 |
| AS395185US | ESCAMBIA-COUNTY-FL-BCC - Escambia County FL Board of County Commissioners | 256 | — | 1 |
| AS20247US | IC531954 - Mercy College | 256 | — | 1 |
| AS398201US | GRAHAM-HEALTH-SYSTEM-IL - Graham Health System | 256 | — | 1 |
| AS14036US | STACKAV-01 - Stack AV | 256 | — | 1 |
| AS395751US | DRAD-ASNET - DESERT RADIOLOGISTS | 256 | — | 1 |
| AS401747US | MOPS-ASN-1 - MODERNOPS | 256 | — | 1 |
| AS397097US | IMA-MODERN-AS - Infrastructure Management Associates, Inc. | 256 | 4.1K | 2 |
| AS400973US | AIK-159 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS397862US | CCFCU - Catalyst Corporate Federal Credit Union | 256 | — | 1 |
| AS398460US | MVLS-SALS - Southern Adirondack Library System | 256 | — | 1 |
| AS399148US | ZETALINK - Zetalink | 256 | — | 1 |
| AS395528US | IRI-IAD - International Registries | 256 | — | 1 |
| AS23507US | AVSISP - AV SERVICES LLC | 256 | — | 1 |
| AS395480US | ALKEON-CAPITAL-MANAGEMENT-LLC - Alkeon Capital Management, LLC | 256 | — | 1 |
| AS394834US | CENGAGE-NYNYC - Cengage Learning, Inc. | 256 | — | 1 |
| AS397841US | 5150 - New Mexico Orthopaedics Associates PC | 256 | — | 1 |
| AS62792US | SSFCU - Suncoast Credit Union | 256 | — | 1 |
| AS62765US | ABMG-HQ - Atlantic Bay Mortgage Group, LLC | 256 | — | 1 |
| AS396525US | GDF-IL01 - Grecian Delight Foods, Inc | 256 | — | 1 |
| AS153US | CTNOSC-ASN-153 - Headquarters, USAISC | 256 | — | 1 |
| AS8135US | TROY-UNIVERSITY - Troy University | 256 | — | 1 |
| AS42651US | GAB Gab Ai Inc | 256 | — | 1 |
| AS55170US | LAYER2 - Layer 2 Networks, Inc. | 256 | — | 1 |
| AS19794US | CEMENTWORKS - The Cementworks LLC | 256 | — | 1 |
| AS54530US | SPRINGFIELD-PUBLIC-SCHOOL-MA - Springfield Public Schools | 256 | 256 | 2 |
| AS150318US | TOKYOONLINE-AS-AP - Tokyo Online Co.,Ltd. | 256 | 1 | 2 |
| AS396138US | DKM9-ARIN - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS54667US | DDAF-FTW - Dean Dorton | 256 | — | 1 |
| AS33433US | CLINICOMP - CLINICOMP INTERNATIONAL, INC. | 256 | — | 1 |
| AS401021US | FASTPIX - FastPix Inc. | 256 | — | 1 |
| AS22679US | M2OS-ASN-01 - m2os LLC | 256 | 4.1K | 2 |
| AS397680US | SDPC - The School District of Pickens County, South Carolina | 256 | — | 1 |
| AS18633US | HPICORP - Health Plans Inc | 256 | — | 1 |
| AS11925US | RUESCH-CONSULTING - Ruesch Consulting, LLC | 256 | — | 1 |
| AS394980US | VAKIFBANK-NY - Turkiye Vakiflar Bankasi T.A.O. | 256 | — | 1 |
| AS30399US | HOSTENGINE - Host-Engine.com | 256 | 4.1K | 2 |
| AS399842US | EA-VICTORIA - Electronic Arts, Inc. | 256 | — | 1 |
| AS23879US | YAHOO-INY - INY Edge site | 256 | 2 | 3 |
| AS398806US | VIS-2020-01 - Valli Information Systems, Inc | 256 | — | 1 |
| AS397061US | HRL-MLB-01 - HRL Laboratories, LLC | 256 | — | 1 |
| AS398499US | OVA-HQ - SL Green Realty Corp | 256 | 1 | 2 |