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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,263 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 641 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,336 |
| 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.
32,247 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,900 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,004 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,350 |
| 1.5K |
| — |
| 6 |
| AS399893US | RTC-MA-ASN-01 - Richmond Telephone Company LLC | 1.5K | 4.1K | 3 |
| AS29730US | NOVOLINK - NovoLink Communications, Inc. - Houston | 1.5K | — | 5 |
| AS46370US | GRANDWEB - Grand Web Solutions, Inc. | 1.5K | — | 6 |
| AS14778US | YAHOO - Yahoo Holdings Inc. | 1.5K | 9 | 15 |
| AS53373US | MATH-INC - Mathematica, Inc. | 1.5K | — | 6 |
| AS23865US | NETINNOVATIONLLC-AS-AP - Net Innovation LLC | 1.5K | — | 6 |
| AS396264US | NOW - Night Owl Wireless, LLC | 1.5K | — | 6 |
| AS53983US | CORKAT-DATA-SOLUTIONS - CorKat Data Solutions, LLC | 1.5K | — | 2 |
| AS399363US | OAISD-OAWAN - Ottawa Area ISD | 1.5K | — | 5 |
| AS32323US | EQUINIX-EC-TR - Equinix, Inc. | 1.5K | — | 5 |
| AS398464US | BDDY - Buddy Software LLC | 1.5K | — | 3 |
| AS7201US | AS-NETWORKEDGE - Network Edge LLC | 1.5K | 1 | 7 |
| AS63183US | YTHING-NET-1 - Ything LLC | 1.5K | 1K | 8 |
| AS400587US | RYAMER - Ryamer, LLC | 1.5K | 13.6K | 14 |
| AS40782US | VIVINT-PLATFORM - Vivint, Inc. | 1.5K | — | 3 |
| AS393385US | NVI-SHARED - National Vision, Inc. | 1.5K | — | 6 |
| AS14224US | TAMPNET-US - Tampnet Inc | 1.5K | — | 3 |
| AS26437US | TCH-AS - THE CLEARING HOUSE PAYMENTS COMPANY L.L.C. | 1.5K | — | 6 |
| AS395591US | ESS-CORP - Election systems & Software | 1.5K | — | 6 |
| AS212071US | SYDMAE Sydney Morrison | 1.5K | — | 5 |
| AS397279US | NIMBUS-SOLUTIONS - Nimbus Solutions | 1.5K | — | 6 |
| AS399247US | FASTLINK-01 - Fastlink Communications LLC. | 1.5K | — | 2 |
| AS13626US | WALGREENS - Walgreens Co | 1.5K | — | 6 |
| AS13352US | MTC-ASN - Mark G Thomas, Sole Proprietorship | 1.5K | 256 | 7 |
| AS2908US | CITI1 - Citigroup Inc. | 1.5K | — | 6 |
| AS26949US | HARBOR-COMMUNICATIONS-LLC - Harbor Communications, LLC | 1.5K | 65.5K | 4 |
| AS47031US | CITY-CVILLE-VA - City of Charlottesville | 1.5K | — | 3 |
| AS7153US | ISO-NE - ISO New England Inc. | 1.5K | — | 5 |
| AS13581US | SOFTWAREHOUSE - SHI International Corp. | 1.5K | 1 | 7 |
| AS26550US | PROVIDENT-FUNDING-ASSOC - Provident Funding | 1.5K | — | 6 |
| AS22900US | ITRON - ITRON INC. | 1.5K | — | 3 |
| AS23225US | NORTH-CAROLINA-WIRELESS - RiverStreet Networks | 1.5K | — | 2 |
| AS57833US | Universal Universal Services of America, LP | 1.5K | — | 3 |
| AS54799US | OTC-MARKETS-GROUP - OTC Markets Group Inc | 1.5K | — | 5 |
| AS19750US | AS-CRITEO - Criteo Corp. | 1.5K | 14 | 20 |
| AS23049US | AS23049 - Ecolab, Inc. | 1.5K | — | 6 |
| AS15225US | PERSECO - Perseco | 1.5K | — | 6 |
| AS394105US | AMTRUST-NA - AmTrust North America, Inc. | 1.5K | — | 4 |
| AS36408US | CDNETWORKSUS-02 - CDNetworks Inc. | 1.5K | — | 6 |
| AS55204US | TELESCAN - ClearPoint | 1.5K | — | 3 |
| AS394671US | HCAS-1 - Hanson Communications, Inc. | 1.5K | — | 2 |
| AS30108US | XTX-DALL - EnLink Midstream Operating, LP | 1.5K | — | 3 |
| AS32094US | ERICYHOST - Ericsson Inc. | 1.5K | 3 | 9 |
| AS20137US | USAGM-LAN - USAGM | 1.5K | — | 6 |
| AS2729US | MG-431-2729 - One Call | 1.5K | — | 3 |
| AS396535US | ADJUST-US - adjust | 1.5K | 1 | 3 |