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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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,766 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,308 |
| 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.
32,243 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,998 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,359 |
| 512 |
| — |
| 2 |
| AS7820US | TOWERFCU-AS - Tower Federal Credit Union | 512 | — | 2 |
| AS40061US | UL-ASN-LAX1 - UnitedLayer, LLC | 512 | 8.2K | 3 |
| AS394805US | RELIAQUEST - ReliaQuest, LLC | 512 | — | 2 |
| AS400703US | BB-7700 - Bankers' Bank | 512 | — | 2 |
| AS33312US | FFBM-0049 - Premier Bank | 512 | — | 1 |
| AS215129US | WPL-133-215129 - Wodarek Productions LLC | 512 | 4.1K | 4 |
| AS62498US | TGNA-WLTX - TEGNA Inc. | 512 | — | 2 |
| AS97US | NTTA-97 - NTT America, Inc. | 512 | — | 2 |
| AS398952US | AG-ASN - AMBRY GENETICS CORPORATION | 512 | — | 1 |
| AS398908US | SMYTHNET - Smyth Technology Group, Incorporated | 512 | — | 1 |
| AS53721US | CORETELLIGENT - Coretelligent, LLC | 512 | — | 2 |
| AS33535US | MONOXIDE - Monoxide Network LLC | 512 | 2 | 4 |
| AS402248US | BOLD-AWC-HED - Apogee Telecom Inc. | 512 | — | 1 |
| AS30367US | STRATEGIC-VALUE-PARTNERS - Strategic Value Partners | 512 | — | 2 |
| AS398574US | COMMONWEALTH-CHARTER-ACADEMY - Commonwealth Charter Academy | 512 | — | 2 |
| AS32889US | SOUTHWESTERN-WIRELESS - Southwestern Wireless, Inc. | 512 | — | 2 |
| AS394656US | CPA-AS1 - Canaveral Port Authority | 512 | — | 2 |
| AS25758US | MEI - MIDWEST EXPRESS INC | 512 | — | 2 |
| AS401191US | BSOSL-ASN-01 - Blue Star Operations Services LLC | 512 | — | 1 |
| AS399619US | BACKCOUNTRY-BROADBAND - Backcountry Broadband LLC | 512 | 4.6K | 12 |
| AS394049US | UWHCA - University of Wisconsin Hospital and Clinics | 512 | — | 2 |
| AS54492US | CAREFIRST-BCBS-01 - CareFirst Management Company, LLC | 512 | — | 1 |
| AS18833US | ASHP-NETWORK - American Specialty Health Plans of CA, Inc. | 512 | — | 2 |
| AS40532US | BUS-DATA-INC - Business Data, Inc. | 512 | — | 2 |
| AS400125US | AUSTIN-ARENA-COMPANY - AUSTIN ARENA COMPANY, LLC | 512 | — | 2 |
| AS35863US | TELCO214US1 - Telco 214, Inc. | 512 | — | 2 |
| AS54528US | RICHIE-USA - Richie Software USA, Inc. | 512 | 17 | 4 |
| AS27479US | LNSP - Lake Norman Security Patrol, Inc. | 512 | — | 2 |
| AS23433US | STAMPS-COM - STAMPS.COM | 512 | — | 2 |
| AS22805US | CNL-FINANCIAL-GROUP - CNL Financial Group Inc. | 512 | — | 2 |
| AS46924US | BJU-ASN - Bob Jones University | 512 | 2 | 4 |
| AS398098US | LA-COLL-INET - City National Bank | 512 | — | 2 |
| AS40785US | AS-OMNIVA-NJDC - Omniva LLC | 512 | 1 | 3 |
| AS395698US | BCBSKS - Blue Cross Blue Shield of Kansas, Inc. | 512 | — | 2 |
| AS20188US | GMU1325 - Gwynedd Mercy College | 512 | — | 2 |
| AS396883US | MTG-RHR-ASN-01 - Millennium Technology Group, Inc. | 512 | — | 2 |
| AS398976US | ALT-1 - BELLE HOLDINGS LLC | 512 | — | 2 |
| AS40338US | B-F - Brown-Forman Corporation | 512 | — | 1 |
| AS4224US | CALYX-AS - The Calyx Institute | 512 | 1 | 3 |
| AS397937US | TGNA-WTHR - TEGNA Inc. | 512 | — | 2 |
| AS401230US | STAPLES-EQUINIX-EAST - Staples, Inc | 512 | — | 2 |
| AS15228US | OREILLYMEDIA-AS1 - O'Reilly Media, Inc. | 512 | — | 1 |
| AS64201US | PUREIP - Pure IP US LLC | 512 | — | 1 |
| AS22263US | NRHSAS - Norman Regional Health System | 512 | — | 1 |
| AS46361US | GILLETTE-CHILDRENS-SPECIALTY-HEALTHCARE - Gillette Children's Specialty Healthcare | 512 | — | 2 |
| AS25922US | CHS-1 - Acuity - CHS, LLC | 512 | — | 2 |