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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 218.2M | 25,525 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 642 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,309 |
| 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.
32,245 autonomous systems registered to United States. Click an AS for detail.
| 73M |
| 232 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,898 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 2,000 |
| AS701US | UUNET - Verizon Business | 43.6M | 991 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,357 |
| 768 |
| — |
| 3 |
| AS26043US | NATL-EDU - National Education Association | 768 | — | 3 |
| AS399957US | QCDA-01 - Queens County District Attorney's Office | 768 | — | 3 |
| AS62607US | JUNONET - Juno Networks | 768 | — | 3 |
| AS1004US | AMBYRE - Ambyre LLC | 768 | 524.3K | 7 |
| AS26879US | AURELIA-TELECOM-LLC - Aurelia Telecom Systems LLC | 768 | 16 | 4 |
| AS22434US | FUC-AS-22434 - Finastra USA Corporation | 768 | — | 3 |
| AS22172US | MITCHELL-INTERNATIONAL-DC2 - Mitchell International | 768 | — | 3 |
| AS54565US | SMART-CITY-KCCC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 768 | — | 2 |
| AS26885US | QCC-IDC-ASN - Kaplan Higher Education Corporation | 768 | — | 3 |
| AS398017US | RTBHOUSE-PHX - RTB House Inc. | 768 | 1 | 3 |
| AS401539US | KLUST-US-DE1 - Corvex, Inc. | 768 | — | 2 |
| AS924US | CLOUDIE - Cloudie Networks LLC | 768 | 4.9K | 7 |
| AS399571US | SKYNETKY - SKYNET COMMUNICATIONS OF KENTUCKY LLC | 768 | 69.6K | 5 |
| AS27178US | HSPS-HQ - Practice Management Technologies and Services | 768 | — | 3 |
| AS398270US | HCWIRELESS - Hill Country Wireless & Technology | 768 | — | 3 |
| AS36193US | WALLEYE-TRADING - Walleye Capital LLC | 768 | 1 | 4 |
| AS63221US | COMMUNITY-IX - Community IX Holdings, Inc. | 768 | — | 3 |
| AS10511US | COUNTRY-INSURANCE - CC Services, Inc | 768 | — | 3 |
| AS393235US | LERETA-LLC - LERETA, LLC | 768 | — | 3 |
| AS395861US | MIA - Medical Imaging Associates of Idaho Falls, Inc. | 768 | — | 3 |
| AS40043US | LIFESPAN - Brown University Health | 768 | — | 3 |
| AS63486US | MCCS - HQ USMC NAF Business & Support Services Division (MR) | 768 | — | 3 |
| AS22328US | CSHS - Cedars-Sinai Health Systems | 768 | — | 3 |
| AS53524US | DYN-INTL - DYNCORP INTERNATIONAL LLC | 768 | — | 3 |
| AS398249US | ALI-01 - Airlink Internet, Inc. | 768 | — | 2 |
| AS35958US | CCN42 - MCCARRAN INTERNATIONAL AIRPORT | 768 | — | 3 |
| AS402456US | BJERKERUD - Bjerkerud, | 768 | 4.1K | 7 |
| AS393670US | SFC-GA - Southern Fibernet Corporation | 768 | 65.5K | 3 |
| AS15346US | ENOVA-HLR - Enova International, Inc. | 768 | — | 2 |
| AS21512US | UNITYHS-AS - Unity Health System | 768 | — | 3 |
| AS23078US | LOUDOUN-CNTY-VA-GOVT - County of Loudoun Virginia | 768 | — | 3 |
| AS11785US | E8-CORE-01 - Element 8 Internet | 768 | — | 2 |
| AS20381US | CABLELABS-LV - Cable Television Laboratories, Inc. | 768 | 1 | 4 |
| AS36333US | RBCORP - Republic Bank & Trust Company | 768 | — | 3 |
| AS29813US | WNBAS - Woodforest National Bank | 768 | — | 3 |
| AS4565US | MEGAPATH2-US - GTT Americas, LLC | 768 | — | 3 |
| AS15263US | GALLUP1 - Gallup | 768 | — | 3 |
| AS22557US | IDENTITYDIGITAL - Identity Digital Inc. | 768 | — | 3 |
| AS19160US | ATGL-AS - Apex Tool Group LLC | 768 | — | 3 |
| AS397805US | AS-DYNASCALE-IAD - Dynascale Inc. | 768 | 8.2K | 4 |
| AS36172US | MHCC-AS001 - MOUNT HOOD COMMUNITY COLLEGE | 768 | — | 2 |
| AS401298US | SIPNAV-WEST - SipNav LLC | 768 | 512 | 5 |
| AS21938US | YAMAHA-DEALERS - YAMAHA MOTOR CORPORATION, U.S.A | 768 | — | 3 |
| AS15343US | AM-EX - AMERIPRISE FINANCIAL SERVICES, LLC | 768 | — | 3 |
| AS53396US | STRAC - STRAC | 768 | — | 3 |
| AS394316US | ALTRA - Altra Federal Credit Union | 768 | — | 3 |