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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 |
| — |
| 1 |
| AS46138US | MAIKIWI-COMPANY-AS - Maikiwi Network LLC | 512 | 2 | 4 |
| AS54287US | ASXCIE-SJC - Axcient, Inc | 512 | — | 1 |
| AS394040US | WELLS-ENTERPRISES - Wells Enterprises, Inc. | 512 | — | 2 |
| AS19152US | IBMCCH-TOR - IBM | 512 | — | 2 |
| AS19860US | OPTIV-US-AS1 - OPTIVER US LLC | 512 | — | 2 |
| AS32579US | CITY-OF-VALLEJO - City of Vallejo, A municipal corporation | 512 | — | 2 |
| AS35872US | FREEDOM-PHL-AS - FreedomPay, Inc. | 512 | — | 2 |
| AS395668US | EFM-ENTERPRISE-FLEET-MGMT - Enterprise Fleet Management, Inc | 512 | — | 2 |
| AS401900US | PROCIRRUS - PROCIRRUS TECHNOLOGIES, INC | 512 | — | 2 |
| AS401459US | AS-UADA - Division of Agriculture of the University of Arkansas | 512 | — | 2 |
| AS32225US | MCGRAW-BCM - BCM One, Inc. | 512 | — | 2 |
| AS30385US | PERDUE-FARMS-INCORPORATED - Perdue Farms Incorporated | 512 | — | 2 |
| AS400697US | OPTIMAS-SOLUTIONS - Optimas OE Solutions, LLC | 512 | — | 2 |
| AS1446US | TPC-1 - Tutor Perini Corporation | 512 | — | 2 |
| AS396023US | DEMO-TEWKS - Demoulas Super Markets, Inc. | 512 | — | 2 |
| AS398943US | LMS-ASN-01 - Liberator Medical Supply, Inc. | 512 | — | 2 |
| AS394510US | ZITEL-ASN-BLOCK01 - Zitel | 512 | 4.1K | 3 |
| AS397133US | USG-NPE-WEST01 - ULTIMATE SOFTWARE GROUP | 512 | — | 2 |
| AS19131US | LIVESS-01 - Living Essentials, LLC | 512 | — | 2 |
| AS18622US | IVANET-YTO - IBASIS INC. | 512 | — | 2 |
| AS53846US | UNITI-FIBER-VOICE - Uniti Fiber Holdings Inc. | 512 | — | 2 |
| AS11235US | ITRONHOSTINGAS - Itron-Hosting | 512 | — | 2 |
| AS401504US | LONG-BEACH-01 - City of Long Beach | 512 | — | 2 |
| AS398193US | GCMCO - G. C. M. COMPUTERS, INC. | 512 | — | 2 |
| AS209177US | ArnoldPorter Arnold & Porter Kaye Scholer LLP | 512 | — | 1 |
| AS32713US | GE-CI-LOUACCESS - General Electric Consumer Products | 512 | — | 2 |
| AS54683US | BSN-SPORTS - BSN Sports LLC | 512 | — | 2 |
| AS30704US | WC-1162 - WellSky Corporation | 512 | — | 2 |
| AS29721US | CSHS-ELSEGUNDO - Cedars-Sinai Health Systems | 512 | — | 2 |
| AS30522US | MNMC - Mount Nittany Medical Center | 512 | — | 2 |
| AS36209US | TGNA-WKYC - TEGNA Inc. | 512 | — | 2 |
| AS16898US | LOG-NET - LOG-NET, INC. | 512 | — | 2 |
| AS393864US | PRESTIGE-BROADBAND - Prestige Broadband LLC | 512 | — | 2 |
| AS402632US | WELLMAN-INDUSTRIES - Wellman | 512 | 256 | 3 |
| AS402427US | NXST-AS402427 - Nexstar | 512 | — | 2 |
| AS36807US | SAINTFRANCIS-TULSA - Saint Francis Health System | 512 | — | 1 |
| AS19694US | VHP-ASN - Vantage Health Plan, Inc. | 512 | 16 | 2 |
| AS64201US | PUREIP - Pure IP US LLC | 512 | — | 1 |
| AS40207US | AS40207 - Cape Cod Healthcare Inc. | 512 | — | 2 |
| AS17124US | SOUTHARK - SouthArk | 512 | — | 2 |
| AS20417US | STABILISERVERS - StabiliServers | 512 | 2 | 4 |
| AS13447US | QYRUS-INC - QYRUS INC. | 512 | — | 2 |
| AS26970US | DV-TRADING-LLC - DV TRADING, LLC | 512 | — | 2 |
| AS12128US | ITS-HYDERABAD - Refinitiv US LLC | 512 | — | 2 |
| AS22751US | MOTHIC-INFINET - Mothic Technologies LLC | 512 | 4.1K | 3 |
| AS18955US | TWEA-AS - Treasury Wine Estates Americas | 512 | — | 1 |