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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) | 227.5M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218M | 24,632 |
| 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.
32,210 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 | 4,359 |
| 256 |
| — |
| 1 |
| AS7070US | IHEARTMEDIA-AS-7070 - iHeartCommunications, Inc. | 256 | — | 1 |
| AS1812US | DXC-AS1810-AS1815 - DXC US Latin America Corporation | 256 | — | 1 |
| AS27545US | LV-INET - City National Bank | 256 | — | 1 |
| AS16752US | EZXAS - EZX, Inc. | 256 | — | 1 |
| AS21986US | WPP-ET-CAMPUS-WASHINGTONDC - Young & Rubicam LLC | 256 | — | 1 |
| AS20262US | DON-JARVIS - Data Innovations LLC | 256 | — | 1 |
| AS398714US | PCHC-SPECTRUM-ATT - Asset Protection Management II L.L.C. | 256 | — | 1 |
| AS400417US | CIPC-CN-01 - Central Iowa Power Cooperative | 256 | — | 1 |
| AS39936US | PAYLOCITY-LAB - Paylocity Corporation | 256 | — | 1 |
| AS397309US | NTTDATA-TAG-FTC - Transaction Applications Group, Inc. | 256 | — | 1 |
| AS40746US | OMI-ASN - Owensboro Messenger Inquirer | 256 | — | 1 |
| AS54245US | CITYOFDURANGO - City of Durango | 256 | — | 1 |
| AS397684US | CLOUD-TECHNOLOGIES-INC - Cloud Technologies, Inc | 256 | — | 1 |
| AS397830US | CITY-OF-GLENDALE - City of Glendale | 256 | — | 1 |
| AS54016US | DN-VA - Diebold Nixdorf, Incorporated | 256 | — | 1 |
| AS397261US | ENDELL-ST - H CLUB LOS ANGELES | 256 | — | 1 |
| AS396222US | TENABLE-NETWORK-SECURITY-INC - Tenable, Inc. | 256 | — | 1 |
| AS27637US | MPC-USA-ASN - Mission Pharmacal Company | 256 | — | 1 |
| AS32627US | BIDS-TRADING - BIDS Trading L.P. | 256 | — | 1 |
| AS6105US | DENVERWATER-1 - Denver Water | 256 | — | 1 |
| AS53962US | 21FORTY - 2140 Networks LLC | 256 | — | 1 |
| AS36402US | NORTH-OAKS-HEALTH-SYSTEM - North Oaks Health System | 256 | — | 1 |
| AS54861US | SAHARA-COMPUTE-COM - Sahara Compute LLC | 256 | — | 1 |
| AS23540US | CMH-IX - CMH-IX | 256 | — | 1 |
| AS19408US | WDS-DENTAL - Western Dental | 256 | — | 1 |
| AS15082US | OMEG-LCN - OMEGAI | 256 | 18 | 4 |
| AS32928US | ITECHTOOL-ASN-LAH - ITechTool Incorporated | 256 | — | 1 |
| AS400048US | THDA - THDA | 256 | — | 1 |
| AS40213US | TOOELECO - Tooele County | 256 | — | 1 |
| AS400420US | ELITEFIBER-CEN - Elite Systems, LLC | 256 | — | 1 |
| AS10988US | COLLEGE-OF-WESTERN-IDAHO - College of Western Idaho | 256 | — | 1 |
| AS393790US | TOUROHOSPITALNOLA - Touro Infirmary Hospital | 256 | — | 1 |
| AS19119US | ROLLINSCOLLEGE - Rollins College | 256 | — | 1 |
| AS55278US | CIG-ASN - California Capital Insurance Company | 256 | — | 1 |
| AS46808US | PSA-ASN-01 - Pueblo of Santa Ana | 256 | — | 1 |
| AS399920US | DAYNET-01 - Dayton | 256 | 4.1K | 2 |
| AS40466US | OSI-FISERV-HAWAII-DC - Fiserv Solutions, LLC | 256 | — | 1 |
| AS139705US | TNSI-AS-AP - Transaction Network Services | 256 | — | 1 |
| AS33449US | ZINIO-PRD-01 - Zinio Systems, Inc | 256 | — | 1 |
| AS63302US | MFAB - Museum Of Fine Arts Boston | 256 | — | 1 |
| AS393522US | AS-METROLIST-SAC - MetroList Services, Inc. | 256 | — | 1 |
| AS39335US | igloo22225 June Slater | 256 | 256 | 2 |
| AS29971US | ICUC001 - iControl Systems USA LLC | 256 | — | 1 |
| AS393840US | CAG-AS01 - Chapman Automotive Group | 256 | — | 1 |
| AS16782US | CORELAB-AS - Core Laboratories | 256 | — | 1 |
| AS4578US | NETCENTER - Network Center Inc. | 256 | — | 1 |