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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 | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 219M | 23,666 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 645 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.8M | 1,361 |
| 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.
32,363 autonomous systems registered to United States. Click an AS for detail.
| 73.1M |
| 234 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 439 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.8M | 3,911 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 45M | 2,046 |
| AS701US | UUNET - Verizon Business | 43.6M | 996 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.8M | 4,491 |
| 134.7K |
| 80 |
| 16 |
| AS394534US | CITYOFCHICAGO-ASN-01 - City of Chicago | 134.4K | — | 11 |
| AS10497US | WORLDBANK - IBRD | 134.4K | 4.1K | 14 |
| AS27185US | DHS-INTERNET - Danbury Hospital - ITG | 134.4K | — | 10 |
| AS26801US | ZITOMEDIA611 - Zito Media, L.P. | 134.4K | 1.1M | 64 |
| AS3724US | ALASKA-ANET - State of Alaska | 134.3K | — | 14 |
| AS16988US | IPAPER - International Paper Company | 134.1K | — | 11 |
| AS21693US | BGP-ASN-21693 - Xcel Energy Inc. | 134.1K | — | 14 |
| AS10583US | CHIME - Connecticut Hospital Assoc. | 134.1K | 65.5K | 13 |
| AS31US | CIT - California Institute of Technology | 134.1K | 65.5K | 13 |
| AS14017US | BNSF-AS - Burlington Northern Sante Fe Railway Corp | 134.1K | — | 13 |
| AS4246US | NJIT-AS - New Jersey Institute of Technology | 134.1K | — | 12 |
| AS20478US | GENMILLS - General Mills, Inc. | 134.1K | — | 12 |
| AS11596US | BESTBUY - Best Buy Co., Inc. | 134.1K | — | 14 |
| AS111US | BOSTONU-AS - Boston University | 133.9K | 1M | 12 |
| AS368US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 133.9K | 256 | 8 |
| AS6356US | NERDCNET - University of Florida | 133.8K | 257 | 15 |
| AS9US | CMU-ROUTER - Carnegie Mellon University | 133.6K | 65.5K | 9 |
| AS345US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 133.6K | 256 | 13 |
| AS329US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 133.6K | 256 | 13 |
| AS50US | ORNL-MSRNET - Oak Ridge National Laboratory | 133.6K | 16 | 11 |
| AS427US | AFCONC-BLOCK1-AS - Air Force Systems Networking | 133.4K | — | 7 |
| AS15081US | OMNI-FIBER - Omni Fiber | 133.4K | 65.5K | 74 |
| AS27257US | WEBAIR-INTERNET - Webair Internet Development Company Inc. | 133.4K | 65.5K | 83 |
| AS7859US | PAIR-NETWORKS - pair Networks | 133.1K | 131.1K | 9 |
| AS13506US | US-DEPARTMENT-OF-THE-TREASURY - United States Department of the Treasury | 133.1K | 512 | 12 |
| AS89US | DNIC-AS-00089 - Navy Network Information Center (NNIC) | 133.1K | 1 | 7 |
| AS29842US | ETSU-NET - East Tennessee State University | 133.1K | — | 9 |
| AS351US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 133.1K | 768 | 13 |
| AS22527US | 22527 - Safeway, Inc. | 133.1K | — | 10 |
| AS13809US | UAMS-ASN - University of Arkansas for Medical Sciences | 132.9K | — | 5 |
| AS54489US | CORESPACE-DAL - CoreSpace, Inc. | 132.9K | 65.5K | 10 |
| AS14241US | ONE-AS - Oakland Schools | 132.9K | — | 10 |
| AS18564US | SJU149068 - St. John's University, New York | 132.6K | — | 9 |
| AS12099US | OAKWOOD-HEALTHCARE - OAKWOOD HEALTHCARE INC | 132.6K | — | 7 |
| AS3562US | SNLL-NET-AS - Sandia National Laboratories | 132.6K | 4.1K | 10 |
| AS14799US | EXP-EC2000 - Experian | 132.6K | — | 9 |
| AS6200US | UIC-AS - University of Illinois Chicago | 132.6K | 1 | 8 |
| AS2025US | UTOLEDO - University of Toledo | 132.4K | — | 6 |
| AS20012US | CHILLER-CITY - Interworks Networking Services | 132.4K | 1 | 78 |
| AS1970US | TAMUS-NET - Texas A&M University | 132.4K | 131.3K | 13 |
| AS7764US | CENSUSBUREAU - National Oceanic and Atmospheric Administration | 132.4K | 1.1K | 14 |
| AS22847US | BOWDOIN - Bowdoin College | 132.4K | 18 | 8 |
| AS6106US | UCR-EDU - University of California, Riverside | 132.4K | 65.5K | 6 |
| AS398537US | KUTZTOWN-01 - Kutztown University | 132.1K | 4.1K | 7 |
| AS14822US | MSKCC - Memorial Sloan-Kettering Cancer Center | 132.1K | — | 7 |
| AS341US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 132.1K | 256 | 7 |