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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 |
| AS30100US | ATLASWORLDGROUP-AS - Atlas Van Lines | 256 | — | 1 |
| AS400239US | DESCHUTES - Deschutes County | 256 | — | 1 |
| AS13731US | ONEIDANATION - Oneida Nation | 256 | 1 | 2 |
| AS40491US | IQVIA-MORRISVILLE - IQVIA Holdings Inc | 256 | — | 1 |
| AS53299US | BETAFORWARD - BetaForward, Inc | 256 | 256 | 2 |
| AS40744US | MC-CDC-01 - Coors Distributing Company | 256 | — | 1 |
| AS63273US | AMERISAFE-AS - Amerisafe Inc. | 256 | — | 1 |
| AS30445US | RAD-2008 - City of Radford | 256 | — | 1 |
| AS19173US | TEXAS-EXCHANGE-BANK - Texas Exchange Bank | 256 | — | 1 |
| AS17092US | HHS-IPASN - Hendrick Medical Center | 256 | — | 1 |
| AS26477US | AS-VCU - Vantage Credit Union | 256 | — | 1 |
| AS40559US | CROSSCOM - CROSSCOM NATIONAL, LLC | 256 | — | 1 |
| AS395770US | TEXARKANACOLLEGE - Texarkana College | 256 | 16 | 2 |
| AS53406US | DPISD-TX-ASN - Deer Park Independent School District | 256 | — | 1 |
| AS47017US | JRFJ-USE - Unlimited Systems Engineering | 256 | — | 1 |
| AS400647US | CASSIA-COUNTY-ID - Cassia County | 256 | 256 | 2 |
| AS399242US | CODINGFLYBOY-LLC - CodingFlyBoy LLC | 256 | 1 | 2 |
| AS397738US | DKM10-ARIN - The Reynolds and Reynolds Company | 256 | — | 1 |
| AS14478US | RECURSE-CENTER - Recurse Center | 256 | 2 | 3 |
| AS26545US | THE-BANKERS-BANK - The Bankers Bank | 256 | — | 1 |
| AS22782US | AS1 - Texas A&M University | 256 | — | 1 |
| AS17286US | PCRMC-ROLLA - Phelps County Regional Medical Center | 256 | — | 1 |
| AS54981US | MANDOLARE-01 - Mandolare LLC | 256 | 1 | 2 |
| AS396884US | DELVAL-01 - Delaware Valley University | 256 | — | 1 |
| AS398402US | TROPICAL01 - TROPICAL SHIPPING USA, LLC | 256 | — | 1 |
| AS18792US | MEME - Meme Holdings LLC | 256 | 1 | 2 |
| AS54121US | DMSAS - David M. Schwarz Architects, Inc. | 256 | — | 1 |
| AS398057US | MP-NETWORKS-ASN - MP Networks, LLC | 256 | — | 1 |
| AS402249US | BOLD-UWM-HED - Apogee Telecom Inc. | 256 | — | 1 |
| AS36272US | ZBIDR - Ziff Brothers Investments, LLC | 256 | — | 1 |
| AS400912US | REEF-ATLNET-FL-01 - Mailreef | 256 | — | 1 |
| AS62826US | CSO-AS - CHICAGO SYMPHONY ORCHESTRA | 256 | — | 1 |
| AS394725US | CALICO - Calico Life Sciences LLC | 256 | — | 1 |
| AS402115US | TSC-AS - Tallahassee State College | 256 | — | 1 |
| AS32092US | AAI-BLI-AS - Altair Advanced Industries | 256 | — | 1 |
| AS402347US | CAV-MNG-AS-01 - Cavnue | 256 | 1 | 2 |
| AS396506US | BEVAIR-27105 - BEVERAGE AIR CORPORATION | 256 | — | 1 |
| AS26920US | DTI-EAST-SLCL - DataGroup Technologies, LLC | 256 | — | 1 |
| AS14216US | ISHIP - IShip.com | 256 | — | 1 |
| AS63115US | ROTOASN - Roto-Rooter Services Company | 256 | — | 1 |
| AS26429US | SIERRA-PACIFIC-INDUSTRIES-AN - Sierra Pacific Industries | 256 | — | 1 |
| AS13317US | AS-WAN - Wan holdings LLC | 256 | 256 | 2 |
| AS396455US | CMM-CMH - CoverMyMeds LLC | 256 | — | 1 |
| AS401728US | FCFCU - First Commonwealth Federal Credit Union | 256 | 1 | 2 |
| AS13439US | SCIREMC-CORP - SCI REMC | 256 | — | 1 |
| AS395074US | SARH-ASN1 - San Antonio Regional Hospital | 256 | — | 1 |