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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 | 3,134 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,681 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,370 |
| 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.
32,364 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 236 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,914 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,047 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,503 |
| 256 |
| — |
| 1 |
| AS401282US | ORIC-REPUBLIC-01 - Old Republic International Corporation | 256 | — | 1 |
| AS670US | DNIC-AS-00670 - Headquarters, USAISC | 256 | — | 1 |
| AS397653US | CITYCR - City of Cedar Rapids | 256 | — | 1 |
| AS26257US | WASHINGTON-COUNTY-OF-PA - County Of Washington | 256 | — | 1 |
| AS40590US | AS40590 - CISCO SYSTEMS, INC. | 256 | — | 1 |
| AS15134US | PWCSA - Prince William County Service Authority | 256 | — | 1 |
| AS402250US | BOLD-MUST-HED - Apogee Telecom Inc. | 256 | — | 1 |
| AS400508US | JS-ASN-01 - The Juilliard School | 256 | — | 1 |
| AS396536US | SENTRACAM - SentraCam | 256 | — | 1 |
| AS400663US | RAOTTDI - Tallahassee Diagnostic Imaging | 256 | — | 1 |
| AS31750US | METHODIST-HEALTHCARE - Methodist Hospital of Memphis | 256 | — | 1 |
| AS400919US | AKARDAM-NET - Akardam Networks | 256 | 4 | 5 |
| AS11076US | COMMUNITY-COMPUTER-SERVICE-INC - COMMUNITY COMPUTER SERVICE INC | 256 | — | 1 |
| AS401550US | PRL-NET01 - Propulsion Resources LLC | 256 | — | 1 |
| AS25879US | UPHSM-ASN-01 - UP Health System - Marquette | 256 | — | 1 |
| AS397522US | GO-DADDY-COM-LLC - GoDaddy.com, LLC | 256 | 1 | 2 |
| AS397858US | THARANCO-GROUP - Tharanco Group Inc | 256 | — | 1 |
| AS62854US | CBI1925 - Cheney Bros, Inc. | 256 | — | 1 |
| AS46714US | IPC-ATL-56-TELX - IP Communications LLC | 256 | — | 1 |
| AS401023US | KWIKBIT-INTERNET - Kwikbit Internet, Inc. | 256 | 1 | 2 |
| AS402702US | JASON - Highlander | 256 | — | 1 |
| AS54678US | GRMIMS - GRM Information Management Services, LLC | 256 | — | 1 |
| AS22583US | CBOE - Cboe | 256 | — | 1 |
| AS19841US | ISNS1 - ISNS | 256 | — | 1 |
| AS394884US | FAMOUS-SMOKE-AS - Famous Smoke Shop | 256 | — | 1 |
| AS33373US | FHLBB-5 - Federal Home Loan Bank of Boston | 256 | — | 1 |
| AS398168US | GIRMC-NET-01 - Grand Island Regional Medical Center | 256 | — | 1 |
| AS33477US | KNOX-COLLEGE-1837 - Knox College | 256 | — | 1 |
| AS397855US | ICSCLOUD-1 - Innovative Computer Solutions, Inc | 256 | — | 1 |
| AS15357US | HCL-186-15357 - HARBIN CLINIC, LLC | 256 | — | 1 |
| AS6589US | ROZINT - Rozint | 256 | 1 | 2 |
| AS18751US | BPL-B1 - Basketball Properties Ltd | 256 | — | 1 |
| AS31804US | WEYCO-GROUP-INC - WEYCO GROUP, INC | 256 | — | 1 |
| AS13547US | PORTER-HOSPITAL - Porter Hospital | 256 | — | 1 |
| AS397051US | 1500-MED-ASSOC-DBQ - Medical Associates Clinic, P.C. | 256 | — | 1 |
| AS2031US | AWWASN - American Water Works Company Inc. | 256 | — | 1 |
| AS30443US | GOLDEN-STATE-OVERNIGHT-DELIVERY-SERVICE-INC - Golden State Overnight Delivery Service, Inc. | 256 | — | 1 |
| AS394163US | CLOUD-XPRESS - Cloud Xpress | 256 | — | 1 |
| AS393413US | HILLSOUTH-DATACENTER01 - Scient Partners, LLC | 256 | — | 1 |
| AS55089US | SC-ASN - THE SEGERDAHL CORP. | 256 | — | 1 |
| AS393285US | CTPF203 - Chicago Teachers Pension Fund | 256 | — | 1 |
| AS399561US | RTCONN-CDN - Right Connection, Inc. | 256 | 1 | 2 |
| AS18951US | 400-CAPITAL-MANAGEMENT - 400 Capital Management LLC | 256 | — | 1 |
| AS395006US | BROOMFIELD-COLORADO - The City and County of Broomfield | 256 | — | 1 |
| AS19802US | LANEPRESS - The Lane Press, Inc. | 256 | — | 1 |
| AS36332US | ASN-NA-XIPE2 - Xipe | 256 | 1 | 2 |