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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. | 218.1M | 24,635 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,220 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 | 3,891 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,003 |
| AS701US | UUNET - Verizon Business | 43.6M | 992 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,360 |
| — |
| 1 |
| AS22109US | UNIVERSAL-INSURANCE - Universal Group, Inc. | 256 | — | 1 |
| AS11876US | HFCOMM-AS-01 - HeadFirst Communications | 256 | 256 | 2 |
| AS212947US | ETLGR Etlgr LLC | 256 | 4 | 5 |
| AS21689US | CVHP-AS - Citrus Valley Health Partners, Inc. | 256 | — | 1 |
| AS53677US | BOLTHOUSE-FARMS - WM. BOLTHOUSE FARMS, INC. | 256 | — | 1 |
| AS398399US | ASANA-IT-01 - Asana, Inc. | 256 | 1 | 2 |
| AS63029US | PAYSCALE-WEB - Payscale, Inc. | 256 | — | 1 |
| AS401740US | GLOBALAI - GlobalAI Holdings Inc. | 256 | 16 | 2 |
| AS6651US | GEMINI-EXCHANGE - Gemini | 256 | — | 1 |
| AS396053US | DAA - Daikin Applied Americas Inc | 256 | — | 1 |
| AS26310US | EASLEY-UTILITIES - Easley Combined Utilities | 256 | — | 1 |
| AS63484US | CREDIT-UNION-WEST - Credit Union West | 256 | — | 1 |
| AS20099US | HMNS - Houston Museum of Natural Science | 256 | 1 | 2 |
| AS40577US | MHPL-3-ASN - MTS Health Partners, L.P. | 256 | — | 1 |
| AS395440US | SCH-ASN-REQUEST - St. Clair Memorial Hospital | 256 | — | 1 |
| AS19310US | CASAIR - Point Broadband Fiber Holding, LLC | 256 | — | 1 |
| AS46451US | NORTHERN-LIGHT-HEALTH - Eastern Maine Healthcare Systems | 256 | — | 1 |
| AS3620US | MCIASN-BLK - Verizon Business | 256 | — | 1 |
| AS396884US | DELVAL-01 - Delaware Valley University | 256 | — | 1 |
| AS13418US | WHG-FORBGP-02 - Fort Wayne Newspapers, Inc. | 256 | — | 1 |
| AS13359US | LEARN-CACHING-PEERING - LEARN | 256 | 1 | 2 |
| AS36093US | PHILLONGDEALERSHIPSASN - Phil Long Dealerships | 256 | — | 1 |
| AS400972US | DHL-062 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS63365US | TWCS - Time Warner Cable Sports Inc | 256 | — | 1 |
| AS27590US | HMSRACING - Hendrick Motorsports | 256 | — | 1 |
| AS396065US | DKM7-ARIN - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS899US | INTRTEL - Intrepid Telecom, Inc. | 256 | 256 | 2 |
| AS40303US | AKSIA - AKSIA LLC | 256 | — | 1 |
| AS23103US | WD-AS1 - Western Digitech, Inc. | 256 | — | 1 |
| AS14332US | SHOPZILLA - Connexity, Inc. | 256 | — | 1 |
| AS13889US | INTEX-SOLUTIONS - Intex Solutions, Inc. | 256 | — | 1 |
| AS401820US | HASHTABLE-ARTIFICIAL-INTELLIGENCE - HashTable, Inc. | 256 | 8 | 9 |
| AS62570US | TUFTS-MEDICAL-CENTER-BOSTON - Tufts Medical Center Inc. | 256 | — | 1 |
| AS397747US | DKM8-ARIN - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS18599US | SMARTCLOUD1 - SmartCloud, LLC | 256 | — | 1 |
| AS1622US | NCHAS - NCH Capital Inc. | 256 | — | 1 |
| AS398206US | BIGSKY-NETWORKS - BigSky Networks, Inc. | 256 | — | 1 |
| AS396193US | ULTRATEC - Ultratec, Inc. | 256 | — | 1 |
| AS22249US | MAXEL-4 - MAXELL CORPORATION OF AMERICA | 256 | — | 1 |
| AS11769US | RJ-SCHINNER - RJ Schinner Co | 256 | — | 1 |
| AS18855US | AWC - AWC Inc. | 256 | — | 1 |
| AS36302US | AMSCOT-ASN - Amscot Corporation | 256 | — | 1 |
| AS63478US | DKH-PUT-ASN - Day Kimball Hospital | 256 | — | 1 |
| AS394645US | WORLDCINEMAINC - World Cinema Inc. | 256 | — | 1 |
| AS394112US | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 256 | — | 1 |
| AS397110US | CLOUD-CONNECT-01 - ConocoPhillips Company | 256 | — | 1 |