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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 |
| AS32198US | MFPS-POTATOROLLS-01 - Martin's Famous Pastry Shoppe, Inc. | 256 | — | 1 |
| AS395609US | COF-EQX-ASH-PP - Capital One Financial Corporation | 256 | — | 1 |
| AS47073US | JCPA-AS - The Jackson Clinic, P.A. | 256 | — | 1 |
| AS400140US | NTTDATA-TAG-LNK - Transaction Applications Group, Inc. | 256 | — | 1 |
| AS19158US | ZAYOB-19158 - Zayo Bandwidth | 256 | 1 | 2 |
| AS14501US | ENTERPRISECOMMUNITY - Enterprise Business Partners, LLC | 256 | — | 1 |
| AS62867US | ALDINEISD-ASN01 - Aldine Independent School District | 256 | — | 1 |
| AS63198US | JCSO-ASN - Jefferson County Sheriff's Office | 256 | — | 1 |
| AS401313US | NOVACOAST - Novacoast Inc | 256 | 1 | 2 |
| AS400185US | NMMC-ASN-1 - North Mississippi Medical Center Inc. | 256 | — | 1 |
| AS402019US | JEROME-COUNTY-ID - Jerome County Idaho | 256 | 4.1K | 2 |
| AS401328US | FASTWIRELESSLLC - Fast Wireless LLC | 256 | 1 | 2 |
| AS11387US | LAC - La Curacao | 256 | — | 1 |
| AS393438US | CMWD - Calleguas Municipal Water District | 256 | — | 1 |
| AS53733US | JERICH-USA-INC - Jerich USA Inc. | 256 | — | 1 |
| AS62528US | CNV-MTK-CORP - Convey Compliance Systems, Inc. | 256 | — | 1 |
| AS26640US | OGFIBER - Oso Grande Technologies, Inc. | 256 | — | 1 |
| AS32377US | SCM-LP-1 - Stevens Capital Management LP | 256 | — | 1 |
| AS197384US | MN-Consult MN CONSULTANCY AND MANAGEMENT LLC | 256 | — | 1 |
| AS394698US | FITCHBURG-STATE-UNIVERSITY - Fitchburg State University | 256 | — | 1 |
| AS397940US | FCG-AS-01 - Frederick County Government | 256 | — | 1 |
| AS395847US | MTHSD207 - Maine Township High School District 207 | 256 | — | 1 |
| AS393748US | LBMCAS01 - LBMC | 256 | — | 1 |
| AS395484US | PETCO-NSC - Petco | 256 | — | 1 |
| AS396103US | AGORA - WB Games Inc. | 256 | — | 1 |
| AS30629US | LCLARK - Lewis & Clark College | 256 | — | 1 |
| AS46900US | REPC-AS - Rushmore Electric Power Cooperative, Inc. | 256 | 256 | 2 |
| AS23469US | HIGHWOODS - Highwoods Properties, Inc. | 256 | — | 1 |
| AS396231US | ABILITY-BUSINESS - Ability Business | 256 | 1 | 2 |
| AS401045US | KNOXCOGOVT-01 - Knox County Government | 256 | — | 1 |
| AS400006US | DIGITAL-MONKS-01 - DigitalMonks LLC | 256 | 65.5K | 2 |
| AS13447US | QYRUS-INC - QYRUS INC. | 256 | — | 1 |
| AS393998US | EGV-BGP - Elk Grove Village Police Department | 256 | — | 1 |
| AS33553US | SOUNDTRANSIT - SOUND TRANSIT | 256 | — | 1 |
| AS401709US | EVERYONE-BANDWIDTH-IN - Abc-Hosters LLC | 256 | — | 1 |
| AS22007US | TJG-LCO - The Jay Group, Inc. | 256 | — | 1 |
| AS399789US | LYFT-CORP - Lyft Inc | 256 | — | 1 |
| AS396493US | FTAUS - FIRST TRUST PORTFOLIOS LP | 256 | — | 1 |
| AS394495US | SHAWFIBER-01 - Shaw Fiber | 256 | 256 | 2 |
| AS19277US | IMAGEMASTER-01 - ImageMaster LLC | 256 | — | 1 |
| AS400959US | CARYNC - Town of Cary | 256 | — | 1 |
| AS63406US | GVEA-01 - Golden Valley Electric Association, Inc. | 256 | 256 | 2 |
| AS27164US | INTERACTIVE BROKERS CORP - Interactive Brokers Corp | 256 | — | 1 |
| AS10988US | COLLEGE-OF-WESTERN-IDAHO - College of Western Idaho | 256 | — | 1 |
| AS53825US | ACMC-AS - Alameda Health System | 256 | — | 1 |
| AS14790US | CAMERON - Cameron Memorial Community Hospital Inc | 256 | — | 1 |