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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. | 218M | 23,999 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,299 |
| 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.
32,154 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 231 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.5M | 3,882 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,990 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,318 |
| 2.3K |
| — |
| 6 |
| AS14060US | BKD-AS - Brookdale Senior Living Inc | 2.3K | — | 4 |
| AS14569US | INTELLIPOP - Intellipop, LLC | 2.3K | — | 9 |
| AS15215US | FARMERS-NETWORK - Farmers Group, Inc. | 2.3K | — | 6 |
| AS32382US | ATOS-CARROLLTON - Atos IT Solutions and Services Inc | 2.3K | — | 9 |
| AS397019US | ROCKETCONNECT - Rocket Connect LLC | 2.3K | 81.9K | 10 |
| AS18874US | MAXAR-ASN - Vantor Parent Inc. | 2.3K | — | 9 |
| AS14352US | SSUITES-AS1 - ERP Suites | 2.3K | — | 9 |
| AS25671US | AIRENET-NUEVO-CA - Wholesale Air-time Inc. | 2.3K | — | 9 |
| AS11187US | RICHWEB - Richweb, Inc | 2.3K | 4.1K | 3 |
| AS6950US | LAMBDA - Lambda Telecom | 2.3K | — | 7 |
| AS13607US | INTUITIVE-ENG - Intuitive Surgical Operations, Inc. | 2.3K | 3 | 12 |
| AS394572US | TYLERTECH-NIC1 - Tyler Technologies, Inc. | 2.3K | — | 8 |
| AS398020US | HICOUNTRYNET - HICOUNTRYNET, LLC | 2.3K | 32 | 8 |
| AS216030US | goodleaf-hd GoodLeaf Hosting & Development LLC | 2.3K | 3 | 12 |
| AS401905US | MOONLITE - Moonlite AI Inc. | 2.3K | — | 7 |
| AS19580US | ART-LLC - A.R.T. Advisors, LLC | 2.3K | — | 9 |
| AS26127US | FRONTIERLABRESEARCH - Frontier Communications of America, Inc. | 2.3K | 1 | 9 |
| AS13652US | HORIZON-BLUE-CROSS-BLUE-SHIELD-OF-NJ - HORIZON BLUE CROSS BLUE SHIELD OF NJ | 2.3K | — | 9 |
| AS54819US | NETDIVERSE-A - NetDiverse, LLC | 2.3K | — | 6 |
| AS19720US | CABLEVISION-CORP - Cablevision Systems Corp. | 2.3K | — | 9 |
| AS26100US | NOAA-PACIFIC-REGION-CENTER - National Oceanic and Atmospheric Administration | 2.3K | — | 3 |
| AS32945US | TECONECTAMOS - Tekwerks Internet | 2.3K | 4.1K | 8 |
| AS21738US | ROZINT - Rozint | 2.3K | 516 | 12 |
| AS46456US | TELESPACE-ASN - Telespace, LLC | 2.3K | — | 5 |
| AS22215US | BHSU - Black Hills State University | 2.3K | — | 8 |
| AS22134US | PETSMART - PetSmart LLC | 2.3K | — | 4 |
| AS63420US | NETACTUATE - NetActuate, Inc | 2.3K | 9 | 18 |
| AS396004US | INTERCEPT - TIGER COMPUTER CONSULTING, LLC | 2.3K | — | 9 |
| AS154859US | KINETLLC-AS-US - Kinet LLC | 2.3K | 16 | 8 |
| AS40954US | JMFAMILY - JM Family Enterprises Inc. | 2.3K | — | 9 |
| AS25692US | AEGISINFOSYS - AEGIS INFORMATION SYSTEMS INC | 2.3K | — | 4 |
| AS53503US | NEARFIELDNETWORKS - Global Internet eXchange | 2.3K | — | 9 |
| AS19065US | LRS - Levi, Ray & Shoup, Inc. | 2.3K | 256 | 10 |
| AS399917US | SEAMLESS-FIBER-INNOVATIONS - Seamless Fiber Innovations L.L.C. | 2.3K | — | 9 |
| AS14418US | DTCC-AS1 - Depository Trust & Clearing Corporation | 2.3K | — | 9 |
| AS397151US | DC2-AS - Trans Union, LLC | 2.3K | — | 5 |
| AS33127US | ISCORP-MEQUON - Integrated Systems Corp | 2.3K | 512 | 11 |
| AS30022US | GIA-CARLSBAD - Gemological Institute of America | 2.3K | — | 2 |
| AS394144US | LTYCONNECT - LTY CONNECT | 2.3K | 131.1K | 9 |
| AS26351US | MARYVILLE-DATA-CENTER - First Horizon National Corporation | 2.3K | — | 9 |
| AS395576US | WLF - West Liberty Foods | 2.3K | — | 2 |
| AS33455US | NORTHWESTERN-COLLEGE-STPAUL-MN - University of Northwestern | 2.3K | — | 5 |
| AS46617US | WEBMD-IDC2-AS - WebMD, LLC | 2.3K | — | 2 |
| AS27557US | AS27557 - Catalina Broadband Solutions, LLC | 2.3K | — | 7 |
| AS40088US | WESTLAKE-CHEMICAL-CORPORATION - Westlake Chemical Corporation | 2.3K | — | 6 |
| AS28852US | AERIS-AS Aeris Communications, INC. | 2.3K | 8.2K | 16 |