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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 |
| 2 |
| AS400294US | PPI-TREMONT-01 - Precision Planting LLC | 256 | — | 1 |
| AS397552US | NORTHEAST-DELTA-DENTAL - Northeast Delta Dental | 256 | — | 1 |
| AS401265US | LWR-338 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS402551US | PIEDMON-ASN - Piedmont | 256 | — | 1 |
| AS393473US | BURRIS-LOGISTICS - Burris Logistics | 256 | — | 1 |
| AS396245US | KIRBYCORP - KIRBY CORPORATION | 256 | — | 1 |
| AS39956US | CCPASN - Community Care Physicians, P.C. | 256 | — | 1 |
| AS402063US | XANTIUM-AS-01 - XANTIUM CONTRACTCO LLC | 256 | — | 1 |
| AS395757US | SCCFCU-PUBLIC01 - Santa Clara County Federal Credit Union | 256 | — | 1 |
| AS36732US | COMCAST-36732 - Comcast Cable Communications, LLC | 256 | — | 1 |
| AS40212US | ECL-ASN - Eminence Capital, LLC. | 256 | — | 1 |
| AS399056US | ENTCOLO-01 - Ent Credit Union | 256 | — | 1 |
| AS54414US | RESPEC - Respec Inc | 256 | — | 1 |
| AS33615US | EVHC - Envision Healthcare Holdings, Inc | 256 | — | 1 |
| AS400729US | AS-BWLOG - Bandwidth Logic, Inc. | 256 | — | 1 |
| AS62572US | TTD-LA - The Technology Depot, Inc. | 256 | — | 1 |
| AS397150US | UNION-HEALTH-SYSTEM - Union Hospital, Inc. | 256 | — | 1 |
| AS397055US | LNH-ASN-01 - 12-182-8156 | 256 | — | 1 |
| AS1052US | COEUR-D-ALENE-TRIBE - Coeur d' Alene Tribe | 256 | 65.5K | 2 |
| AS62625US | JDBANK - JD Bank | 256 | — | 1 |
| AS32150US | BRADFITZ-DANGA - DANGA INTERACTIVE | 256 | 3 | 4 |
| AS13610US | PROVOCRAFT-NOVELTY - Provo Craft & Novelty, Inc. | 256 | — | 1 |
| AS399699US | KCLI-01 - Kansas City Life Insurance Company | 256 | — | 1 |
| AS396960US | TC-EQ-CH2 - TransCanada Pipelines Limited | 256 | — | 1 |
| AS399398US | FITNESS-INTERNATIONAL - FITNESS INTERNATIONAL | 256 | — | 1 |
| AS54390US | LAMBNET - XtcN | 256 | — | 1 |
| AS40626US | WENTWO-ASN - Wentworth-Douglass Hospital | 256 | — | 1 |
| AS401232US | ETECHGS-INDIA - Etech Texas, LLC | 256 | — | 1 |
| AS30512US | RIDGEVIEW-MEDICAL-CENTER - Ridgeview Medical Center | 256 | — | 1 |
| AS22218US | US-MARLINK - Marlink, Inc. | 256 | — | 1 |
| AS40272US | ALLENINSTITUTE - Allen Institute | 256 | — | 1 |
| AS36863US | ABC-BITS-WC - American Broadcasting Companies, Inc. | 256 | — | 1 |
| AS54920US | PHAEDON - Phaedon Acquisition, Inc. | 256 | — | 1 |
| AS29869US | DOTBLOCK-3 - HostRocket.com, Inc. | 256 | 256 | 2 |
| AS400160US | CITYOFYUMA-NET - City of Yuma | 256 | — | 1 |
| AS1222US | EPCC-AS - EL PASO COMMUNITY COLLEGE | 256 | — | 1 |
| AS30563US | STRATACOM-GA-1 - Stratacom Communications, Inc. | 256 | — | 1 |
| AS396409US | TKG-AS01 - KRAFT GROUP LLC | 256 | — | 1 |
| AS400485US | APOG-PUERTA-DEL-SOL - Apogee Telecom Inc. | 256 | — | 1 |
| AS26841US | HIDDEN-VILLA-RANCH - Hidden Villa Ranch | 256 | — | 1 |
| AS36422US | STERLING-TRADING-TECH-CHI - STT Acquisition Intermediate Holdco, Inc. | 256 | — | 1 |
| AS62965US | SAFECU-AS - SAFE CREDIT UNION | 256 | — | 1 |
| AS395745US | SQPT-OPS-LLC-AS - SquarePoint Ops LLC | 256 | — | 1 |
| AS54283US | FCU-IN - FORUM Credit Union | 256 | — | 1 |
| AS62953US | EXCEL-IND - Excel Industries, Inc. | 256 | — | 1 |
| AS40903US | KENNETWORK - Turbine Inc. | 256 | — | 1 |