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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,661 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,490 |
| 1.5K |
| — |
| 6 |
| AS2729US | MG-431-2729 - One Call | 1.5K | — | 3 |
| AS23415US | G5INTERNET - G5 INTERNET, LLC | 1.5K | — | 2 |
| AS396264US | NOW - Night Owl Wireless, LLC | 1.5K | — | 6 |
| AS23329US | AS23329 - Crown Castle Fiber LLC | 1.5K | — | 6 |
| AS40499US | WG - Washington Gas | 1.5K | — | 6 |
| AS23865US | NETINNOVATIONLLC-AS-AP - Net Innovation LLC | 1.5K | — | 6 |
| AS400060US | EY-AS-DSFW - Ernst & Young LLP | 1.5K | — | 6 |
| AS395799US | SVB - Soundview Broadcasting, LLC | 1.5K | — | 3 |
| AS19825US | LABONE - LabOne, Inc. | 1.5K | — | 3 |
| AS53745US | NORDKLETT-NET - Nordklett Inc. | 1.5K | — | 6 |
| AS999US | CORIX-999 - CORIX NETWORKS | 1.5K | 65.6K | 22 |
| AS62775US | INTERNET2-ISS - Internet2 | 1.5K | 3 | 6 |
| AS16716US | LIVINGSTON-AS - Lake Livingston Communications Inc. | 1.5K | 65.5K | 5 |
| AS22909US | COMCAST-22909 - Comcast Cable Communications, LLC | 1.5K | 47 | 53 |
| AS14224US | TAMPNET-US - Tampnet Inc | 1.5K | — | 3 |
| AS16877US | TAS-TDC-SDC-WEB - Global Payments Inc. | 1.5K | — | 5 |
| AS34437US | COVERTHART-AS-34437 - CovertHart Networks | 1.5K | — | 6 |
| AS30108US | XTX-DALL - EnLink Midstream Operating, LP | 1.5K | — | 3 |
| AS22900US | ITRON - ITRON INC. | 1.5K | — | 3 |
| AS400063US | PTCBB - Pennsylvania Telephone Company | 1.5K | — | 3 |
| AS398571US | CLEVELAND-COUNTY-TEL-01 - CLEVELAND COUNTY TELEPHONE CO. INC. | 1.5K | — | 2 |
| AS7153US | ISO-NE - ISO New England Inc. | 1.5K | — | 5 |
| AS30650US | ALTA-RESOURCES - Alta Resources Corp. | 1.5K | — | 3 |
| AS398229US | MCLLC-RANGE-01 - Mobile Communications, LLC | 1.5K | — | 2 |
| AS57833US | Universal Universal Services of America, LP | 1.5K | — | 3 |
| AS397062US | SMG - Sun-Maid Growers of California | 1.5K | — | 6 |
| AS29730US | NOVOLINK - NovoLink Communications, Inc. - Houston | 1.5K | — | 5 |
| AS26842US | MFXCHANGE US INC - MFXCHANGE US, INC | 1.5K | — | 6 |
| AS399893US | RTC-MA-ASN-01 - Richmond Telephone Company LLC | 1.5K | — | 2 |
| AS395591US | ESS-CORP - Election systems & Software | 1.5K | — | 6 |
| AS215039US | nodesty Nodesty LLC | 1.5K | 18 | 9 |
| AS399134US | FF - Fitchburg Fiber LLC | 1.5K | — | 3 |
| AS46796US | SLAPPEYTEL-NET - Slappey Telephone, Inc. | 1.5K | — | 6 |
| AS29727US | ARCKANET - ARCKANET | 1.5K | 512 | 8 |
| AS63183US | YTHING-NET-1 - Ything LLC | 1.5K | 1K | 8 |
| AS14052US | STEPHENS - Stephens, Inc. | 1.5K | — | 6 |
| AS393385US | NVI-SHARED - National Vision, Inc. | 1.5K | — | 6 |
| AS26437US | TCH-AS - THE CLEARING HOUSE PAYMENTS COMPANY L.L.C. | 1.5K | — | 6 |
| AS19997US | PENNNATIONALINSURANCE - Penn National Insurance | 1.5K | — | 6 |
| AS16886US | HEB-AS-PRIMARY - H-E-B, LP | 1.5K | — | 6 |
| AS14561US | ASSOCIATED-BANK-INTERNET - Associated Banc-Corp | 1.5K | — | 4 |
| AS47031US | CITY-CVILLE-VA - City of Charlottesville | 1.5K | — | 3 |
| AS11408US | KWE-AS - Kintetsu World Express | 1.5K | — | 6 |
| AS36408US | CDNETWORKSUS-02 - CDNetworks Inc. | 1.5K | — | 6 |
| AS26949US | HARBOR-COMMUNICATIONS-LLC - Harbor Communications, LLC | 1.5K | 65.5K | 4 |
| AS40782US | VIVINT-PLATFORM - Vivint, Inc. | 1.5K | — | 3 |