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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 |
| 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 |
| AS39936US | PAYLOCITY-LAB - Paylocity Corporation | 256 | — | 1 |
| AS401602US | KEYSTONEREN - Keystone REN, LLC | 256 | 65.5K | 2 |
| AS397002US | SHARPSPRING-INC - Sharpspring Inc. | 256 | — | 1 |
| AS26172US | CREDIT-INDUSTRIEL-ET-COMMERCIAL - Credit Industriel Et Commercial | 256 | — | 1 |
| AS55207US | IGLOO - June Slater | 256 | 2 | 3 |
| AS400712US | MAXIM-HOMECARE - Maxim Healthcare Services, Inc. | 256 | — | 1 |
| AS14180US | AS-KOGNITIVE - Kognitive Networks | 256 | — | 1 |
| AS16636US | CWF-ASN-BGP - The Colonial Williamsburg Foundation | 256 | — | 1 |
| AS62483US | TEREX-AWP - Terex USA, LLC | 256 | — | 1 |
| AS25910US | OXNARDCITY - City of Oxnard | 256 | — | 1 |
| AS2723US | ENDURANCE - ENDURANCE REINSURANCE CORPORATION OF AMERICA | 256 | — | 1 |
| AS395573US | IBTCONNECT - IBT Connect LLC | 256 | 4.1K | 2 |
| AS393995US | PFFCUGW - Police and Fire Federal Credit Union | 256 | — | 1 |
| AS17407US | CHERRYROAD-TECH - CherryRoad Technologies, Inc. | 256 | — | 1 |
| AS393790US | TOUROHOSPITALNOLA - Touro Infirmary Hospital | 256 | — | 1 |
| AS395883US | GILA-RIVER - AEG | 256 | — | 1 |
| AS394290US | NBS-92 - Nightingale-Bamford School | 256 | — | 1 |
| AS47037US | SCOUTDNS-AS1 - ScoutDNS | 256 | — | 1 |
| AS400316US | MN-ADULT-AND-TEEN-CHALLENGE - Minnesota Adult & Teen Challenge | 256 | 1 | 2 |
| AS399914US | N-LAB - N-LAB | 256 | 2 | 3 |
| AS400679US | UBERDUCK - Uberduck, LLC | 256 | 4.1K | 2 |
| AS393569US | 9-11-MEMORIAL - 9/11 MEMORIAL | 256 | — | 1 |
| AS395627US | CITY-OF-MONTGOMERY-AL - City of Montgomery | 256 | — | 1 |
| AS399027US | AHH-MAIN-01 - ARKANSAS HEART HOSPITAL ENCORE | 256 | — | 1 |
| AS398455US | MERIDIANCC - Meridian Community College | 256 | — | 1 |
| AS26902US | CEKKENT - Cekkent LLC | 256 | 256 | 2 |
| AS396934US | KOLLMORGEN - Kollmorgen Corporation | 256 | — | 1 |