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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 512 |
| 512 |
| 4 |
| AS27149US | DNIC-ASBLK-27032-27159 - United States Department of Defense (DoD) | 512 | — | 2 |
| AS13498US | TSYS-SDC-THS - Global Payments Inc. | 512 | — | 2 |
| AS22156US | DANANET - Dana Consulting, Inc. | 512 | — | 1 |
| AS27226US | HARBOURVEST - Harbourvest Partners, LLC | 512 | — | 2 |
| AS397065US | US-NJ - Hillside (Shared Services US) LLC | 512 | — | 2 |
| AS63248US | USRC-AS63248 - U.S. RENAL CARE, INC. | 512 | — | 2 |
| AS398985US | CITY-OF-ARVADA - City of Arvada | 512 | — | 2 |
| AS11479US | BRM-SUN-AS - Oracle Corporation | 512 | — | 2 |
| AS18702US | DEGENET-AS - DEGE NETWORK TECHNOLOGIES LLC | 512 | — | 2 |
| AS40785US | AS-OMNIVA-NJDC - Omniva LLC | 512 | 1 | 3 |
| AS17196US | COD-GE-IL - College of duPage | 512 | — | 1 |
| AS40532US | BUS-DATA-INC - Business Data, Inc. | 512 | — | 2 |
| AS395725US | USACS-1001 - USACS | 512 | — | 2 |
| AS393400US | LUXOTTICA-NA2 - Luxottica of America Inc. | 512 | — | 1 |
| AS54364US | RR - Rosen Research LLC | 512 | 16 | 3 |
| AS46501US | WATCHGUARD-TECHNOLOGIES-INC - WatchGuard Technologies, Inc. | 512 | 1 | 3 |
| AS399795US | INFINITY-TECH-KC1 - Infinity Technology Services LLC | 512 | — | 1 |
| AS393376US | DYNAMICEDGE - Dynamic Edge, Inc. | 512 | — | 1 |
| AS401703US | ORDINAL-ADV-01 - Ordinal Advisors LLC | 512 | 16 | 3 |
| AS395701US | EPICGA-DC2-AS - Epic Games Inc. | 512 | — | 2 |
| AS50937US | INFINITIUM-AS INFINITIUM CORPORATION | 512 | 1 | 3 |
| AS12051US | ESCONDIDO-CA - City of Escondido | 512 | — | 2 |
| AS396481US | SKYHI-1 - SkyHi Broadband | 512 | — | 2 |
| AS394049US | UWHCA - University of Wisconsin Hospital and Clinics | 512 | — | 2 |
| AS19542US | PLICO - Protective Life Corporation | 512 | — | 2 |
| AS22537US | ALBEMARLE-CORP - Albemarle Corp | 512 | — | 2 |
| AS396067US | CURRENT-NETWORKS-01 - Current Networks | 512 | 256 | 2 |
| AS397827US | ALLEGACY - ALLEGACY FEDERAL CREDIT UNION | 512 | — | 2 |
| AS400411US | CHS - Sisters of Charity Hospital | 512 | — | 1 |
| AS215367US | LIXER LENIN JABIB RAMIREZ | 512 | 1 | 3 |
| AS401230US | STAPLES-EQUINIX-EAST - Staples, Inc | 512 | — | 2 |
| AS19125US | ROCK-NET - Rockford Corporation | 512 | — | 2 |
| AS40350US | KEYCOOP - Key Cooperative | 512 | — | 2 |
| AS31859US | ANGELINA-COUNTY - ANGELINA COUNTY | 512 | 1 | 2 |
| AS33297US | VEGAS - Sumofiber | 512 | 2 | 4 |
| AS36572US | WPBF-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS401596US | TAC-205-23 - Texas Association of Counties | 512 | — | 1 |
| AS399676US | KANIKSU-01 - Kaniksu, LLC | 512 | — | 2 |
| AS30564US | LSUS - Louisiana State University in Shreveport | 512 | — | 2 |
| AS1437US | VISONEX-LLC - Visonex LLC | 512 | — | 2 |
| AS19482US | GTLLP - Greenberg Traurig P.A | 512 | — | 2 |
| AS393846US | ROUTER12-NETWORKS-UN - Router12 Networks LLC | 512 | — | 2 |
| AS36265US | MCL-INT-ALL - Maverick Capital, LTD. | 512 | — | 2 |
| AS395454US | KUKUI-NET1 - Kukui | 512 | — | 1 |
| AS395061US | SUNMARK - Sunmark Credit Union | 512 | — | 2 |
| AS396883US | MTG-RHR-ASN-01 - Millennium Technology Group, Inc. | 512 | — | 2 |