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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. | 218.1M | 24,656 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,306 |
| 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.
32,202 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 232 |
| 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 |
| AS401691US | ABM-859 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS63087US | EBSI - Empyrean Benefit Solutions Inc. | 256 | — | 1 |
| AS14191US | HT-WATERBURY-INC-01 - H&T Waterbury, INC | 256 | — | 1 |
| AS394804US | JOERENDELL - Joerendell LLC | 256 | — | 1 |
| AS401274US | AWSOM - Alice L. Walton School of Medicine | 256 | — | 1 |
| AS21670US | BPC-CERMAK - Berlin Packaging, LLC | 256 | — | 1 |
| AS397013US | ALEGEUS-02-US - ALEGEUS TECHNOLOGIES, LLC | 256 | — | 1 |
| AS401027US | JDI-EAGLE - JUST DISH IT, INC | 256 | 256 | 2 |
| AS401271US | WIDOJ2 - Wisconsin Department of Justice | 256 | — | 1 |
| AS53515US | AMTELCO-204-27-231-AS - AMTELCO | 256 | — | 1 |
| AS36422US | STERLING-TRADING-TECH-CHI - STT Acquisition Intermediate Holdco, Inc. | 256 | — | 1 |
| AS398990US | JAA-ASN-26 - JACKSONVILLE AVIATION AUTHORITY | 256 | — | 1 |
| AS46834US | ACLAB - Ascend Clinical, LLC | 256 | — | 1 |
| AS395117US | LIMS - LabVantage Solutions, Inc | 256 | — | 1 |
| AS32403US | THE-HERITAGE-FOUNDATION - The Heritage Foundation | 256 | — | 1 |
| AS398246US | RCC-ASN-01 - Rogue Community College | 256 | — | 1 |
| AS399124US | MAJES-20 - Majesco | 256 | — | 1 |
| AS25615US | BBV - Broadband Visions, LLC | 256 | — | 1 |
| AS894US | NINJA-IX-SERVICES-ASN - Ninja-IX Services LLC | 256 | 257 | 3 |
| AS397734US | RAD-ROANOKE - Radford University | 256 | — | 1 |
| AS396912US | CEICMHA - Community Mental Health Authority of Clinton-Eaton-Ingham Counties | 256 | 256 | 2 |
| AS53789US | LEBANON-OR - City of Lebanon | 256 | — | 1 |
| AS397981US | FIRSTECH-INC - Firstech, Inc. | 256 | — | 1 |
| AS393500US | GERMANTOWNFRIENDSSCHOOL - Germantown Friends School | 256 | — | 1 |
| AS204874US | SAASTACK-LLC SaaStack LLC | 256 | 1 | 2 |
| AS32096US | KUB-NET - Knoxville Utilities Board | 256 | — | 1 |
| AS22596US | CHR-823 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS10517US | THE-BANK-OF-NEW-YORK-MELLON-CORPORATION-AS10517 - The Bank of New York Mellon Corporation | 256 | — | 1 |
| AS400973US | AIK-159 - UNIVERSAL HEALTH SERVICES | 256 | — | 1 |
| AS397618US | GLOBITECH-INC - GlobiTech Incorporated | 256 | — | 1 |
| AS19571US | ISB-45-19571 - IHC Specialty Benefits, Inc. | 256 | — | 1 |
| AS401149US | EQUITYBANK-ASN - Equity Bank | 256 | — | 1 |
| AS23060US | CGGV-HOU - CGGVeritas Services (US) Inc. | 256 | — | 1 |
| AS399464US | MICROSULA - Microsula, Inc. | 256 | — | 1 |
| AS213154US | DAVIDC David Costantino | 256 | 19 | 5 |
| AS54849US | KANE-IS-ABLE - Kane Warehousing, Inc | 256 | — | 1 |
| AS35889US | GOREX - University of Hawaii | 256 | 65.5K | 2 |
| AS63048US | CONFIRE - Confire JPA | 256 | — | 1 |
| AS393765US | MVHS - Faxton St Luke's Healthcare | 256 | — | 1 |
| AS33677US | 509FIBER - 509fiber | 256 | 4.1K | 2 |
| AS400726US | AIRHAWK-WIRELESS - Airhawk Wireless | 256 | — | 1 |
| AS30331US | ST-VINCENT - St. Vincent Hospital | 256 | — | 1 |
| AS31757US | ASN-VALLEYCREST - ValleyCrest Companies | 256 | — | 1 |
| AS402429US | RAFF-TECHNOLOGIES - Raff | 256 | — | 1 |
| AS402149US | WAN2 - WAN2 LLC | 256 | — | 1 |
| AS53729US | GESA-CU-ASN - Gesa Credit Union | 256 | — | 1 |