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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. | 218M | 24,358 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 233 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,996 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,342 |
| 768 |
| — |
| 3 |
| AS400509US | ASIPFB - IPFB LLC | 768 | 1 | 4 |
| AS395760US | MAPCOEXPRESS-DC-1 - MAPCO Express, Inc. | 768 | — | 3 |
| AS897US | TURTLE-ROCK-STUDIOS - Turtle Rock Studios, Inc. | 768 | 5 | 8 |
| AS394203US | CHICAGOSERVERS - Chicagoservers.org | 768 | 4 | 7 |
| AS18767US | PHJW-LLP - Paul, Hastings, Janofsky & Walker LLP | 768 | — | 2 |
| AS18600US | WPIA-NET - R. Fritz Enterprises Inc. | 768 | — | 3 |
| AS36333US | RBCORP - Republic Bank & Trust Company | 768 | — | 3 |
| AS64284US | CIC-AS-PRIMARY - CoolSys Commercial & Industrial Solutions, Inc. | 768 | — | 3 |
| AS15260US | DWS-NY - Disney Worldwide Services, Inc. | 768 | — | 3 |
| AS21860US | FL-GRIP - FOLEY & LARDNER LLP | 768 | — | 3 |
| AS11386US | HEALTH-AND-HOSPITAL-CORPORATION-OF-MARION-COUNTY - HEALTH AND HOSPITAL CORPORATION OF MARION COUNTY | 768 | — | 3 |
| AS394682US | CMP - Communications & Power Industries, LLC | 768 | — | 3 |
| AS400065US | SCION-BACKBONE - Princeton University | 768 | — | 2 |
| AS40689US | FTSL-AS - FTS INTERNATIONAL SERVICES, LLC | 768 | — | 3 |
| AS398895US | HBFF-ASN-01 - Hazelden Betty Ford Foundation | 768 | — | 3 |
| AS54030US | SUMMIT-SOL-ASN - Summit Solutions, LLC | 768 | — | 3 |
| AS397174US | APPLIED-PREDICTIVE-TECHNOLOGIES - Applied Predictive Technologies, Inc. | 768 | — | 3 |
| AS7382US | MIENERGY - MiEnergy Cooperative | 768 | — | 2 |
| AS36193US | WALLEYE-TRADING - Walleye Capital LLC | 768 | 1 | 4 |
| AS14614US | STARKEY - Starkey Laboratories, Inc. | 768 | — | 3 |
| AS21512US | UNITYHS-AS - Unity Health System | 768 | — | 3 |
| AS63081US | STOF-GAMING-TAMPA - Seminole Gaming | 768 | — | 2 |
| AS19127US | HNW-AK - Heritage NetWorks, LLC | 768 | 257 | 4 |
| AS25802US | WBD-AS25802 - Home Box Office | 768 | — | 3 |
| AS398270US | HCWIRELESS - Hill Country Wireless & Technology | 768 | — | 3 |
| AS15251US | GRAND-CENTRAL-STATION - Grand Central Station Internet Services, Inc. | 768 | — | 3 |
| AS26338US | HYVE-MANAGED-HOSTING - Hyve Managed Hosting Corp Inc | 768 | 2 | 3 |
| AS395066US | DIGITAL-TECHNOLOGY-GROUP - Digital Technology Group, LLC | 768 | — | 3 |
| AS23078US | LOUDOUN-CNTY-VA-GOVT - County of Loudoun Virginia | 768 | — | 3 |
| AS395891US | CCS-DN1-MULTIHOME - Century Communities, Inc. | 768 | — | 3 |
| AS15096US | SONN Steven Noble | 768 | 2 | 5 |
| AS394861US | LJI - La Jolla Institute for Immunology | 768 | — | 3 |
| AS27178US | HSPS-HQ - Practice Management Technologies and Services | 768 | — | 3 |
| AS15185US | HIBBERT-EAST - The Hibbert Group | 768 | — | 3 |
| AS397281US | BJCCA-1 - Birmingham Jefferson Civic Center Authority | 768 | — | 2 |
| AS29985US | AMN-HEALTHCARE - AMN Healthcare | 768 | — | 2 |
| AS402390US | WITL-US-AS - Wisewave | 768 | — | 3 |
| AS399115US | AOP - AOP | 768 | — | 2 |
| AS205419US | pl-lionbridge Lionbridge Technologies, Inc. | 768 | — | 3 |
| AS394795US | COMM-SOLUTIONS - Communication Solutions, LLC | 768 | — | 3 |
| AS22602US | EXPERIENT-INC - Experient Inc. | 768 | — | 2 |
| AS36711US | FIRST-ACCEPTANCE-CORP - FIRST ACCEPTANCE INSURANCE COMPANY OF TENNESSEE, INC. | 768 | 16 | 4 |
| AS46718US | BTCONF-SON - BT Conferencing | 768 | — | 3 |
| AS10511US | COUNTRY-INSURANCE - CC Services, Inc | 768 | — | 3 |
| AS398850US | CHEYNEY-UNIVERSITY-OF-PA - Cheyney University Of Pennsylvania | 768 | — | 2 |
| AS11803US | OMNICELL - Omnicell | 768 | — | 2 |