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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 | 21,173 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,242 |
| 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 | 3,668 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,949 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,365 |
| CYBERDELIA-INTENETWORKING-GROUP - /dev/hack |
| 512 |
| 256 |
| 3 |
| AS22754US | GAPARTNERS-CT - General Atlantic Service Corp. | 512 | — | 2 |
| AS19521US | AS-EPOXYTEL-US - Epoxytel Networks LLC | 512 | 1 | 3 |
| AS16797US | TASB-AS - Texas Association of School Boards, Inc | 512 | — | 1 |
| AS22385US | JMS-ASN - Janney Montgomery Scott, LLC | 512 | — | 2 |
| AS2908US | CITI1 - Citigroup Inc. | 512 | — | 2 |
| AS27208US | DISCOVERY-ENERGY-LLC-01 - Discovery Energy, LLC | 512 | — | 2 |
| AS398419US | COLO-LOL - Tiny Tiny Computing | 512 | 4.1K | 3 |
| AS33318US | AS-AHC-80 - Agfa HealthCare Corporation | 512 | — | 2 |
| AS62531US | PIH2 - PIH Health, Inc. | 512 | — | 1 |
| AS4224US | CALYX-AS - The Calyx Institute | 512 | 1 | 3 |
| AS21900US | LBPC - LAW BULLETIN PUBLISHING COMPANY | 512 | — | 2 |
| AS55046US | NGS-SDC - National Government Services, Inc. | 512 | — | 2 |
| AS397964US | HYVE-MANAGED-HOSTING - Hyve Managed Hosting Corp Inc | 512 | 2 | 2 |
| AS398976US | ALT-1 - BELLE HOLDINGS LLC | 512 | — | 2 |
| AS394058US | TELOSC-ASH - Telos Corporation | 512 | — | 2 |
| AS26372US | VERMONTINFORMATION - Vermont Information Processing | 512 | — | 2 |
| AS16856US | BLESSING-HEALTH-SYSTEM-AS - Blessing Hospital | 512 | — | 2 |
| AS401781US | HOSTPEPPER - HostPepper, LLC | 512 | — | 2 |
| AS27390US | ALGAS - Fred Alger & Co Inc. | 512 | — | 2 |
| AS36596US | FACC - Florida Association of Court Clerks, Inc. | 512 | — | 2 |
| AS64201US | PUREIP - Pure IP US LLC | 512 | — | 1 |
| AS401459US | AS-UADA - Division of Agriculture of the University of Arkansas | 512 | — | 2 |
| AS14945US | FMC-401NEWING-LOH - FAIRFIELD MEDICAL CENTER | 512 | — | 2 |
| AS21974US | FMIC - Frankenmuth Mutual Insurance Company | 512 | — | 2 |
| AS40532US | BUS-DATA-INC - Business Data, Inc. | 512 | — | 2 |
| AS31823US | ITIVITI-USA - Itiviti USA, Inc. | 512 | — | 2 |
| AS400349US | BOLD-HOWARDU - Apogee Telecom Inc. | 512 | — | 1 |
| AS395436US | HUH-ASN-01 - Howard University Hospital | 512 | — | 2 |
| AS30385US | PERDUE-FARMS-INCORPORATED - Perdue Farms Incorporated | 512 | — | 2 |
| AS23356US | LAFC - Los Angeles Football Club | 512 | — | 2 |
| AS54492US | CAREFIRST-BCBS-01 - CareFirst Management Company, LLC | 512 | — | 1 |
| AS198087US | Mativith Mativith LLC | 512 | — | 2 |
| AS398193US | GCMCO - G. C. M. COMPUTERS, INC. | 512 | — | 2 |
| AS215367US | LIXER LENIN JABIB RAMIREZ | 512 | 1 | 3 |
| AS13498US | TSYS-SDC-THS - Global Payments Inc. | 512 | — | 2 |
| AS396014US | TSG - TSG Resources, Inc. | 512 | — | 2 |
| AS401108US | DISCOUNT-TIRE - Discount Tire | 512 | — | 2 |
| AS36462US | TGNA-KHOU - TEGNA Inc. | 512 | — | 2 |
| AS393376US | DYNAMICEDGE - Dynamic Edge, Inc. | 512 | — | 1 |
| AS46623US | FISHBACK - Fishback Financial Corporation | 512 | — | 2 |
| AS27533US | OMGEO - Depository Trust & Clearing Corporation | 512 | — | 2 |
| AS1857US | DISN-PILOTNET3 - RTX BBN Technologies, Inc. | 512 | — | 2 |
| AS19768US | SCAN - SCAN Health Plan | 512 | — | 2 |
| AS14105US | NO - Secure IP | 512 | — | 2 |
| AS22751US | MOTHIC-INFINET - Mothic Technologies LLC | 512 | 4.1K | 3 |
| AS63269US | BOOTBARN - Boot Barn Inc. | 512 | — | 2 |