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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 |
| 256 |
| — |
| 1 |
| AS401698US | NJCL-AS - NORTH JERSEY COMMUNICATIONS LLC | 256 | — | 1 |
| AS394681US | SUMMITHEALTHCARE - Summit Healthcare Regional Medical Center | 256 | — | 1 |
| AS18661US | DCA-BGP - Dunn Carney Allen Higgins & Tongue, LLP | 256 | — | 1 |
| AS11218US | TED-MOUDIS-ASSOCIATES-INC - Ted Moudis Associates, Inc. | 256 | — | 1 |
| AS53778US | BCML-ASN - Berenberg Capital Markets, LLC | 256 | — | 1 |
| AS10935US | RLC-INTERNET - RLC INTERNET | 256 | — | 1 |
| AS19584US | DATACAMO-LOSANGELES - Datacamo, Inc. | 256 | — | 1 |
| AS400614US | APOG-OZARKS - Apogee Telecom Inc. | 256 | — | 1 |
| AS46481US | TOPCO - Topco Associates LLC | 256 | — | 1 |
| AS26980US | CHURCH-DWIGHT - Church & Dwight Co., Inc. | 256 | — | 1 |
| AS36799US | CUBIC-AS - Cubic Corporation | 256 | — | 1 |
| AS401031US | ASN-FAULKNER-UNIVERSITY - Faulkner University | 256 | 256 | 2 |
| AS398289US | JKNIPPER-ASN-01 - J. KNIPPER AND COMPANY, INC. | 256 | — | 1 |
| AS395404US | SEAKR - SEAKR Engineering, LLC | 256 | — | 1 |
| AS394121US | VCH-MADERA - Valley Children's Hospital | 256 | — | 1 |
| AS398027US | ASN-BELL2 - Bell Bank | 256 | — | 1 |
| AS36239US | OFFICERING-LAX - RATETEL, INC | 256 | — | 1 |
| AS29942US | AS29942 - Tanger Properties Limited Partnership | 256 | — | 1 |
| AS55252US | ACTIVE-ASN-2013 - Active International | 256 | — | 1 |
| AS53588US | ATHOC-DC3 - AtHoc Inc | 256 | — | 1 |
| AS30183US | HRCAC-1 - Hard Rock Hotel and Casino Atlantic City | 256 | — | 1 |
| AS26465US | LRC-104 - LRC GROUP LLC | 256 | — | 1 |
| AS401722US | OPTYXBROADBAND-TX - Optyx Broadband Inc. | 256 | — | 1 |
| AS395062US | FIERY-LLC-AS - FIERY, LLC | 256 | — | 1 |
| AS62749US | DIGITALK-NAP-1 - DIGITALK Cloud Inc | 256 | — | 1 |
| AS21868US | A10H - A10H LLC | 256 | 257 | 3 |
| AS32607US | CANACCORD-GENUITY - Canaccord Genuity LLC | 256 | — | 1 |
| AS54582US | AS-RCMI - Realty Center Management Inc | 256 | — | 1 |
| AS63309US | SBA COMMUNICATIONS MIAMI DC - SBA Communications Corporation | 256 | — | 1 |
| AS53406US | DPISD-TX-ASN - Deer Park Independent School District | 256 | — | 1 |
| AS394633US | ASCENSION-MINISTRYSERVICECENTER - Ascension Technologies | 256 | — | 1 |
| AS31964US | CG-AS - The Imagine Group, LLC | 256 | — | 1 |
| AS18724US | BHR - Blue Hills Regional Vocational Technical School | 256 | — | 1 |
| AS14023US | WILD - Minnesota Wild | 256 | — | 1 |
| AS40878US | ADNS-ASN - Advanced Data and Network Solutions, Inc. | 256 | — | 1 |
| AS36272US | ZBIDR - Ziff Brothers Investments, LLC | 256 | — | 1 |
| AS213912US | Mediabay-AS International Mediabay Alliance, LLC | 256 | — | 1 |
| AS400364US | DSLD-NET01 - DSLD HOMES, LLC | 256 | — | 1 |
| AS393344US | HELIONTECHNOLOGIES - Helion Technologies, Inc | 256 | — | 1 |
| AS19456US | WATERS-CORPORATION - Waters Technologies Corporation | 256 | — | 1 |
| AS30445US | RAD-2008 - City of Radford | 256 | — | 1 |
| AS398057US | MP-NETWORKS-ASN - MP Networks, LLC | 256 | — | 1 |
| AS402630US | VIGILBASE - Vigilbase | 256 | 1 | 2 |
| AS399120US | DDAF-LOU - Dean Dorton | 256 | 1 | 2 |
| AS19048US | PEERLESS-PRODUCTS - PEERLESS PRODUCTS, INC. | 256 | — | 1 |
| AS19974US | SKYPACKET-TEKRIDGE - SkyPacket | 256 | — | 1 |