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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 | 21,186 |
| 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 | 3,669 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,948 |
| AS701US | UUNET - Verizon Business | 43.6M | 998 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,373 |
| 256 |
| — |
| 1 |
| AS32658US | PINELLAS-COUNTY-SO - Pinellas County Government | 256 | — | 1 |
| AS19534US | LCTC-AS1 - Lee County Tax Collector | 256 | — | 1 |
| AS8164US | JUNO - Juno Online Services, L.P. | 256 | — | 1 |
| AS400067US | BNP-ASNBLOCK-01 - BNP Media, INC | 256 | — | 1 |
| AS398055US | MPS-303-AS - Mapleton School District No. 1 in the county of Adams & St. | 256 | — | 1 |
| AS40655US | WINTHROP-AS - Winthrop & Weinstine, P.A. | 256 | — | 1 |
| AS13556US | IVANET-MIAMI - IBASIS INC. | 256 | — | 1 |
| AS393541US | ESS-CORP - EXTRA SPACE STORAGE | 256 | — | 1 |
| AS23542US | CWI-FNG-ASN - Florida's Natural Growers, Inc. | 256 | — | 1 |
| AS62934US | FFBF-PROD01 - First Federal Bank of Florida | 256 | — | 1 |
| AS394193US | CMNJ-ASN - County of Morris OIT | 256 | — | 1 |
| AS21511US | NCSBN - NCSBN, Inc. | 256 | — | 1 |
| AS11219US | GLIDEWELL - James R. Glidewell Dental Ceramics Inc. | 256 | — | 1 |
| AS62866US | OHIO-IX-OPS - OHIO IX | 256 | 4.1K | 2 |
| AS63354US | STLZOO - Saint Louis Zoo | 256 | — | 1 |
| AS15268US | MDARCHIVES - Maryland State Archives | 256 | — | 1 |
| AS30434US | LOEWS - LOEWS CORPORATION | 256 | — | 1 |
| AS394637US | LIGHTCHANGE - LightChange Technologies | 256 | 1 | 2 |
| AS394747US | NCAA-NATIONAL-OFFICE - National Collegiate Athletic Association (NCAA) | 256 | — | 1 |
| AS397489US | MATTHEWS-209 - Matthews Book Company | 256 | — | 1 |
| AS46741US | AS-LONDON - Morningstar, Inc. | 256 | — | 1 |
| AS54059US | ITELLUS - Itelligence Inc. US | 256 | — | 1 |
| AS35853US | AS35853 - SLUMBERLAND, INC. | 256 | — | 1 |
| AS55065US | FORTHEALTHCARE-FTAWI - Fort HealthCare Inc | 256 | — | 1 |
| AS398093US | ADA-TECH-LLC - ADA Tech, LLC | 256 | — | 1 |
| AS399829US | MHD-COMMUNICATIONS - MHD Communications | 256 | — | 1 |
| AS31813US | FREEDOMLINX-TECHNOLOGIES - FreedomLinx Technologies | 256 | — | 1 |
| AS62997US | RICKEY-S-FRANCIS-JR - Abc-Hosters LLC | 256 | 2 | 3 |
| AS32774US | NGK-SPARKPLUGS-USA - NGK Sparkplugs USA | 256 | — | 1 |
| AS398147US | COLLEGEOFTHEMAINLAND-1 - College of the Mainland | 256 | — | 1 |
| AS397840US | GMS-ASN-01 - GENERAL MARKETING SOLUTIONS LLC | 256 | — | 1 |
| AS396069US | NBC-64-ASN1 - Nazarene Bible College | 256 | 1 | 2 |
| AS399201US | CMPS-AS - Compass Christian Church | 256 | 2 | 3 |
| AS400520US | MTNLINKD-01 - Mtnlinkd, Inc | 256 | — | 1 |
| AS26698US | PSA-INC - PARAMOUNT SOFTWARE ASSOCIATES, INC. | 256 | — | 1 |
| AS397495US | TOWNOFOROVALLEY-02 - Town of Oro Valley | 256 | — | 1 |
| AS402232US | ADMA-ASN-01 - ADMA BIOMANUFACTURING, LLC | 256 | — | 1 |
| AS394571US | WATERSTONE - Waterstone Mortgage | 256 | — | 1 |
| AS30562US | SCARSDALE-SCHOOLS - Scarsdale Schools District | 256 | — | 1 |
| AS6515US | DACSNX-ISP - DACS-IX | 256 | 1 | 2 |
| AS36228US | LANCASTERBIBLECOLLEGE - Lancaster Bible College | 256 | — | 1 |
| AS36082US | BIDS - BIDS Trading L.P. | 256 | — | 1 |
| AS396474US | ANNEX-FIBER - Annex Fiber Inc. | 256 | 256 | 2 |
| AS22294US | ROTECH-HEALTHCARE - ROTECH HEALTHCARE, INC | 256 | — | 1 |
| AS53544US | LUMUGRACEFUL - LUMU GRACEFUL | 256 | — | 1 |
| AS397138US | JUSTUS-AS - The Vegetable Group | 256 | 1 | 2 |