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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 | 3,138 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 211.1M | 21,138 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 639 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,244 |
| 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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 383 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 49.3M | 3,674 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,951 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,417 |
| EA-KIRKLAND - Electronic Arts, Inc. |
| 256 |
| — |
| 1 |
| AS3742US | ROCKISLAND2 - Rock Island Communications | 256 | — | 1 |
| AS14636US | INTERNAP-BLK4 - Internap Holding LLC | 256 | 65.5K | 4 |
| AS40541US | CCS-ASN - Central Credit Services Inc | 256 | — | 1 |
| AS36814US | THE-TOLEDO-BLADE-COMPANY - THE TOLEDO BLADE COMPANY | 256 | — | 1 |
| AS46511US | MMC-026 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS46993US | SABA-CAPITAL-MANAGEMENT - Saba Capital Management, L.P. | 256 | — | 1 |
| AS19266US | TOTES-ISOTONER - Totes Isotoner Corporation | 256 | — | 1 |
| AS199454US | esimynetworkservices ESIMY LLC | 256 | — | 1 |
| AS36174US | BAPTISTHEALTH - Baptist Health System | 256 | — | 1 |
| AS402067US | NACC-46-AS - NorthWest Arkansas Community College | 256 | — | 1 |
| AS400448US | TOCR-EDGE - Town of Castle Rock | 256 | — | 1 |
| AS400829US | HCDL-SAN-ANTONIO-DATA-CENTER - H5 Data Centers | 256 | 4.1K | 2 |
| AS393228US | VINELAND - City of Vineland Board of Education | 256 | — | 1 |
| AS395589US | HACC - Harrisburg Area Community College | 256 | — | 1 |
| AS62469US | PLACEIQ - PLACEIQ, INC. | 256 | — | 1 |
| AS23544US | ASN1 - City of Mission Viejo | 256 | — | 1 |
| AS398426US | APOG-RIPON - Apogee Telecom Inc. | 256 | — | 1 |
| AS207612US | XTT XTT Ltd Co. LLC | 256 | — | 1 |
| AS22109US | UNIVERSAL-INSURANCE - Universal Group, Inc. | 256 | — | 1 |
| AS402585US | DIGITAINO-LLC - Digitaino | 256 | 2 | 3 |
| AS19724US | UNITEDONE - United One | 256 | — | 1 |
| AS29865US | CONTREALTYCORP - Continental Realty Corporation | 256 | — | 1 |
| AS397762US | US-INSIDEPLASTICS-1 - Laird Plastics, Inc. | 256 | — | 1 |
| AS21924US | KERN-HIGH-SCHOOL-DISTRICT - Kern High School District | 256 | — | 1 |
| AS22618US | GWK-LLC - Gannett Welsh & Kotler LLC | 256 | — | 1 |
| AS398414US | AS398414 - Kaman Industrial Technologies | 256 | — | 1 |
| AS54704US | RCU - Royal Credit Union | 256 | — | 1 |
| AS53704US | EMONEYPROD - eMoney Advisor | 256 | — | 1 |
| AS20391US | PRGPARKING-DOMAIN - The Parking Spot | 256 | — | 1 |
| AS402395US | AXION-NET - Axion | 256 | — | 1 |
| AS54121US | DMSAS - David M. Schwarz Architects, Inc. | 256 | — | 1 |
| AS46249US | OAI-5-ASN - Omni Air International Inc. | 256 | — | 1 |
| AS19581US | GRAYCENTRALCAST - Gray Media, Inc. | 256 | — | 1 |
| AS394365US | HOLCOMBE-CIRCUIT - S & K TV Systems, Inc. | 256 | — | 1 |
| AS22249US | MAXEL-4 - MAXELL CORPORATION OF AMERICA | 256 | — | 1 |
| AS11218US | TED-MOUDIS-ASSOCIATES-INC - Ted Moudis Associates, Inc. | 256 | — | 1 |
| AS53409US | IEWC - IEWC | 256 | — | 1 |
| AS62570US | TUFTS-MEDICAL-CENTER-BOSTON - Tufts Medical Center Inc. | 256 | — | 1 |
| AS27379US | SELECT-STAFFING - Select Staffing | 256 | — | 1 |
| AS58313US | MISAKA-UK-AS Misaka Network, Inc. | 256 | 65.5K | 3 |
| AS14594US | AS14594 - Payment Alliance International, Inc | 256 | — | 1 |
| AS18599US | SMARTCLOUD1 - SmartCloud, LLC | 256 | — | 1 |
| AS12254US | INSTRUCTURE-MAIN - Instructure, Inc | 256 | — | 1 |
| AS393862US | CHILDRENSOMAHA - Children's Hospital & Medical Center | 256 | — | 1 |
| AS393225US | ARIN-PFS-IAD - ARIN Operations | 256 | 1 | 2 |
| AS398435US | STI-ASN-01 - Sequential Technology International, LLC | 256 | — | 1 |