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How United States ranks worldwide on dormant space, the transfer market, routing security and address density.
PeeringDB-registered presence.
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 | 24,630 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,307 |
| 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.
32,219 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 | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| CRSCHOOLS-1 - CEDAR RAPIDS COMMUNITY SCHOOL DISTRICT |
| 256 |
| — |
| 1 |
| AS401873US | STM-014 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS399119US | TOP-TVMASTERS - TV Masters, LLC | 256 | — | 1 |
| AS402668US | ONE-FREE-COMPUTER-TRANSIT - One | 256 | 4.1K | 2 |
| AS62951US | DDRCORP - DDR Corp. | 256 | — | 1 |
| AS54730US | BSA-ASN1 - BS&A Software, LLC | 256 | — | 1 |
| AS40642US | IWU-2017-01 - ILLINOIS WESLEYAN UNIVERSITY | 256 | — | 1 |
| AS22915US | ATAS-01 - Acuity Technologies LLC | 256 | 1 | 2 |
| AS17297US | COC-TX-ASN-17297 - CITY OF CARROLLTON - TEXAS | 256 | — | 1 |
| AS25913US | ASI-DCO-AS-109 - APPLIED SYSTEMS, INC | 256 | — | 1 |
| AS6141US | GRINNELL-MUTUAL-REINSURANCE-COMPANY - Grinnell Mutual Reinsurance Company | 256 | — | 1 |
| AS32389US | BERKLEE-AS - Berklee College of Music | 256 | — | 1 |
| AS25678US | SCHIFFHARDIN - Schiff, Hardin & Waite | 256 | — | 1 |
| AS463US | AFCONC-BLOCK1-AS - Air Force Systems Networking | 256 | — | 1 |
| AS14507US | TASTE-2-ASN - Tastefully Simple | 256 | — | 1 |
| AS13992US | SLPT1 - SailPoint Technologies, Inc. | 256 | — | 1 |
| AS400027US | ECH-01 - Earlychildhood LLC | 256 | — | 1 |
| AS394096US | CAPEREGIONALHEALTHSYSTEM - Cape Regional Medical Center, Inc. | 256 | — | 1 |
| AS29989US | URM-AS1 - URM Stores Inc | 256 | — | 1 |
| AS20349US | CFRDC-MFICORE - Crystal Farms Refrigerated Distribution Company | 256 | — | 1 |
| AS400965US | CYPRESS-FIBER-01 - Cypress Fiber | 256 | 65.5K | 2 |
| AS40323US | VAFB - Virginia Farm Bureau Mutual Insurance Company | 256 | — | 1 |
| AS399387US | DIGITECH-COMPUTER-LLC - Digitech Computer LLC | 256 | — | 1 |
| AS40002US | DAIICHISANKYO - Sankyo Pharma Inc. | 256 | — | 1 |
| AS393462US | COLLETTE-HEALTH - Collette Health, LLC | 256 | 1 | 2 |
| AS17053US | ACCEL-COMM - Accel Communications LLC | 256 | 4.1K | 2 |
| AS63070US | UOVO-ART - Uovo Art LLC | 256 | — | 1 |
| AS62751US | HSAUWC-AS - HSA-UWC | 256 | — | 1 |
| AS22802US | AMERISURE - Amerisure Mutual Insurance Company | 256 | — | 1 |
| AS400545US | CYGNUS-COMMUNICATIONS - Cygnus Communications | 256 | — | 1 |
| AS30558US | LINCOLNELECTRIC - The Lincoln Electric Company | 256 | — | 1 |
| AS398360US | CKT-CLOUD - Common Knowledge Technology Inc | 256 | — | 1 |
| AS393915US | GRAND-AMERICA-PUBLIC - Grand America | 256 | — | 1 |
| AS399613US | SMESTADTECH-01 - Smestad Tech LLC | 256 | 3 | 3 |
| AS29956US | WAML-ASN - Waterfall Asset Management, LLC | 256 | — | 1 |
| AS40862US | ASN-EFX - ELECTRONIC FUNDS TRANSFER CORP. | 256 | — | 1 |
| AS399283US | ROBLY-MARKETING-LLC - Robly Digital Marketing LLC | 256 | — | 1 |
| AS395314US | AECC-SANJUANPOOLS-ASN - American Environmental Container Corp. | 256 | 256 | 2 |
| AS399530US | CIR-DC-02 - Cambridge Investment Research, Inc. | 256 | — | 1 |
| AS64237US | MASS-MUTUAL - Massachusetts Convention Center Authority | 256 | — | 1 |
| AS396865US | BACKBLAZE - Backblaze Inc | 256 | 4.1K | 2 |
| AS395311US | MIDWAYUSA01 - MidwayUSA | 256 | — | 1 |
| AS11009US | CARLOWUNIV - Carlow University | 256 | — | 1 |
| AS394751US | ND-LEHI - NetDocuments | 256 | — | 1 |
| AS399253US | FLAGLER-CLERK - Flagler County Clerk of the Circuit Court & Comptroller | 256 | — | 1 |
| AS401361US | AI-401361 - Andromeda Industries, LLC | 256 | 0 | 2 |
| AS402144US | NETWORKING-WEST-VIRGINIA - Networking West Virginia | 256 | — | 1 |