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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 |
| 256 |
| — |
| 1 |
| AS397425US | MASON-1 - Masonicare Corporation | 256 | — | 1 |
| AS40374US | HIDHO - High Density Hosting, Inc. | 256 | — | 1 |
| AS14662US | CSTONE-NET - Cornerstone Systems Inc. | 256 | — | 1 |
| AS401876US | WBC-ASN-02 - Weigel Broadcasting Co | 256 | — | 1 |
| AS1080US | WPCCU-ASN-01 - Water and Power Community Credit Union | 256 | — | 1 |
| AS399366US | KIRKLAND-ELLIS-DC - Kirkland & Ellis LLP | 256 | — | 1 |
| AS63007US | COPK-ASN-1 - City of Overland Park, Kansas | 256 | — | 1 |
| AS395299US | SANJOSE-COSTARICA-01 - THE WESTERN UNION COMPANY | 256 | — | 1 |
| AS393751US | COUNTY-OF-BERKS - County of Berks | 256 | — | 1 |
| AS22704US | CEI-COLLEGE-OF-EASTERN-IDAHO - College of Eastern Idaho | 256 | — | 1 |
| AS12036US | POE - Poe Foundation | 256 | 256 | 2 |
| AS54516US | T3TRADING - T3 Trading Group LLC | 256 | — | 1 |
| AS210398US | Brander-Group-ASN Brander Group Inc. | 256 | — | 1 |
| AS58342US | MISAKA-IT-AS Misaka Network, Inc. | 256 | — | 1 |
| AS46921US | SMITHGROUP-ASN - SMITHGROUP Companies, Inc. | 256 | — | 1 |
| AS394489US | LAMINAR-NETWORKS-01 - Laminar Networks LLC | 256 | — | 1 |
| AS398750US | SIMMONS-BANK - Simmons Bank | 256 | — | 1 |
| AS393578US | MESA-WATER-DISTRICT - Mesa Water District | 256 | — | 1 |
| AS18684US | WCM-ASN - Westfield Capital Management Company, LLC | 256 | — | 1 |
| AS393873US | AMERICAN-CENTRAL-TRANSPORT-INC - American Central Transport Inc. | 256 | — | 1 |
| AS402495US | BSH-ENT-01 - BSH | 256 | 256 | 2 |
| AS397508US | NJTPA - North Jersey Transportation Planning Authority, Inc. | 256 | — | 1 |
| AS36399US | WESTERNCARRIERS-NJ - Western Carriers Inc. | 256 | — | 1 |
| AS19405US | HRSD-INTERNET-IP-BLOCK - Hampton Roads Sanitation District | 256 | — | 1 |
| AS19336US | BLAIN-SUPPLY-PRIMARY - BLAIN SUPPLY, INC | 256 | — | 1 |
| AS1023US | COMPUTER-TEAM-INC - COMPUTER TEAM INC. | 256 | — | 1 |
| AS399345US | AAFCU-PDC - American Airlines Federal Credit Union | 256 | — | 1 |
| AS17142US | THERASOFTONLINE - Therasoft Inc | 256 | — | 1 |
| AS36402US | NORTH-OAKS-HEALTH-SYSTEM - North Oaks Health System | 256 | — | 1 |
| AS16618US | FUC-AS-16618 - Finastra USA Corporation | 256 | — | 1 |
| AS36078US | MI-DATACENTER-2019 - M/I Homes, Inc | 256 | — | 1 |
| AS17160US | NCOM-NA - Neofelis Communications | 256 | 4.1K | 3 |
| AS394817US | THE-SALVATION-ARMY-USE - The Salvation Army | 256 | — | 1 |
| AS11217US | CLM-ASN - Carter Ledyard & Milburn LLP | 256 | — | 1 |
| AS402230US | STRATO - Strato Labs Inc | 256 | 1 | 2 |
| AS394227US | ETTKY - Eastern Telephone & Technologies, Inc. | 256 | — | 1 |
| AS46221US | MISCHOICE - MIS Choice, Inc. | 256 | — | 1 |
| AS31948US | HQ - Santa Ana Star Casino Hotel | 256 | — | 1 |
| AS30308US | MACFCU - Mid-Atlantic Corporate Federal Credit Union | 256 | — | 1 |
| AS397729US | FCMC-68234330 - Fulton County Medical Center | 256 | — | 1 |
| AS30662US | VCU-01 - Veridian Credit Union | 256 | — | 1 |
| AS36652US | KOCHTRUCKING - KOCH TRUCKING | 256 | — | 1 |
| AS36325US | OCNL-AS36325 - Operations & Compliance Network LLC | 256 | — | 1 |
| AS400730US | SPARTANBURGCOUNTY-192-146-148-0 - Spartanburg County | 256 | — | 1 |
| AS20274US | FVCC-AS - Flathead Valley Community College | 256 | — | 1 |
| AS401495US | IVA-ASN-1 - IVA | 256 | — | 1 |