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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 |
| PORTAGEPUBLICSCHOOLS - Portage Public Schools |
| 512 |
| 1 |
| 3 |
| AS11275US | NBH-HOLDINGS-CORPORATION - National Bank Holdings Corporation | 512 | — | 2 |
| AS35868US | HERMETEK-AS-01 - HermeTek LLC | 512 | — | 2 |
| AS399850US | HCINDIANA - Hamilton County | 512 | — | 2 |
| AS400782US | HARRIS-COUNTY-PUBLIC-LIBRARY - Harris County Public Library | 512 | — | 1 |
| AS27528US | EIKON-ASN-01 - Eikon Therapeutics, Inc. | 512 | — | 1 |
| AS36335US | TGNA-KXTV - TEGNA Inc. | 512 | — | 2 |
| AS26903US | SALISBURY-ASN - City of Salisbury, North Carolina | 512 | — | 2 |
| AS20073US | RPIPRINT-INC - RPI PRINT, INC. | 512 | — | 2 |
| AS18763US | PHJW-LLP - Paul, Hastings, Janofsky & Walker LLP | 512 | — | 2 |
| AS14419US | MOSSYOAK - HAAS OUTDOORS, Inc. | 512 | — | 2 |
| AS40524US | FUNSOFT-AS - Fundamental Software, Inc. | 512 | — | 2 |
| AS6488US | DS6488-0 - AMUG | 512 | — | 2 |
| AS18966US | AURORA-SOLUTIONS - Aurora Solutions, LLC | 512 | — | 2 |
| AS398001US | TGNA-WZDX - TEGNA Inc. | 512 | — | 2 |
| AS62553US | ELCRO-DIGITAL-SERVICES-LLC - Elcro Digital Services, LLC | 512 | — | 2 |
| AS395292US | ACRISURE-ARENA - Acrisure Arena | 512 | — | 2 |
| AS398385US | PHOTOSHELTER-CDN - PhotoShelter, Inc. | 512 | — | 2 |
| AS32810US | ITCE-888-01 - IT Colo Exchange | 512 | — | 2 |
| AS402315US | SUPERNETWORK - FSTcloud | 512 | — | 2 |
| AS19838US | BLUE-WATER-NETWORKS - Blue Water Networks | 512 | — | 1 |
| AS397099US | TA-OPERATING-01 - TravelCenters of America | 512 | — | 2 |
| AS36767US | WMUR-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS398412US | WEBER-COUNTY-01 - WEBER COUNTY | 512 | — | 1 |
| AS11546US | UNOMAHA-AS - The Board of Regents of the University of Nebraska | 512 | — | 1 |
| AS16873US | AS-HARTS - HART SYSTEMS INC | 512 | — | 2 |
| AS25605US | SCANSAFE - Cisco OpenDNS, LLC | 512 | — | 2 |
| AS63205US | ELWOOD - Elwood Union Free School District | 512 | — | 2 |
| AS40140US | COGNEX-DU - Cognex Corporation | 512 | — | 2 |
| AS63443US | DC7 - NORTHWEST FEDERAL CREDIT UNION | 512 | — | 2 |
| AS399210US | TSAUSWPDCPHX - The Salvation Army | 512 | — | 2 |
| AS396000US | TEAMINDUSTRIALSERVICES - Team Industrial Services, Inc. | 512 | — | 2 |
| AS14226US | STIFEL - Stifel Nicolaus and Company Incorporated | 512 | — | 2 |
| AS397498US | CCSD-ASN - Cherokee County School District | 512 | — | 2 |
| AS27600US | VHC-ARLINGTON - Virginia Hospital Center | 512 | — | 2 |
| AS36710US | NAKAYAMA - Nakayama Systems LLC | 512 | 5 | 7 |
| AS393982US | WIDEORBIT-WOCLOUD - WideOrbit LLC | 512 | — | 2 |
| AS397784US | KTSL-ASN - Kilpatrick Townsend and Stockton, LLP | 512 | — | 2 |
| AS400886US | LOGAN-HEALTH - Logan Health Medical Center | 512 | — | 2 |
| AS40813US | INDIANA-MEMBERS-CU - Indiana Members Credit Union | 512 | — | 2 |
| AS27421US | APPLAUSEMA - Applause | 512 | — | 2 |
| AS5666US | NET-CPRK - Speedcast Communications, Inc | 512 | — | 2 |
| AS396423US | COASTALFIBERNET - Coastal FiberNet, LLC | 512 | — | 2 |
| AS396176US | NADCORP-AS1 - North American Division of Seventh-day Adventists | 512 | — | 2 |
| AS214478US | AS-SAKURACLOUDS Sakura Clouds LLC | 512 | 8 | 10 |
| AS14622US | AS-14622-CHI - GoFIBER | 512 | — | 1 |
| AS16521US | ISLANDPALMS-GUEST-INTERNET - Island Palms Hotel & Marina | 512 | — | 1 |