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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 | 23,695 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,300 |
| 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.
32,143 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 | 3,820 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,994 |
| AS701US | UUNET - Verizon Business | 43.6M | 995 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,278 |
| 51.5K |
| 131.1K |
| 123 |
| AS4237US | CSC-IGN-FTW-AS4237 - DXC US Latin America Corporation | 51.2K | — | 13 |
| AS27506US | CROWNCASTLE-AS27506 - Crown Castle Fiber LLC | 51.2K | — | 17 |
| AS400220US | PEARLCOMMFIBER-01 - PearlComm | 50.9K | 65.5K | 78 |
| AS11550US | SDL-20-AS - Smithville Digital, LLC | 50.7K | — | 13 |
| AS15100US | BEVCOMM-AS1 - Bevcomm | 50.7K | — | 19 |
| AS19504US | WTCC - WTC Communications, Inc. | 50.7K | — | 25 |
| AS31863US | DACEN-2 - Centrilogic, Inc. | 50.4K | 65.5K | 57 |
| AS19201US | ETC - Eastex Telephone Cooperative, Inc. | 50.4K | 65.5K | 21 |
| AS10971US | CASSCOMM - Cass Cable TV, Inc. | 50.4K | 65.5K | 20 |
| AS11499US | WHOI-WOODSHOLE - Woods Hole Oceanographic Institution | 50.4K | — | 9 |
| AS33353US | SBS - Sony Interactive Entertainment LLC | 50.4K | 230.2K | 147 |
| AS15153US | STARWIRELESS-15153 - StarVision, Inc. | 50.4K | 65.5K | 64 |
| AS401696US | COGNETCLOUD - cognetcloud INC | 50.4K | — | 46 |
| AS13868US | PEAK INTERNET - Peak Internet | 50.4K | 65.5K | 6 |
| AS393337US | UOFHARTFORD - The University of Hartford | 50.2K | — | 6 |
| AS394380US | LEASEWEB-USA-DAL - Leaseweb USA, Inc. | 50.2K | 65.5K | 57 |
| AS4226US | SUMOFIBER - Sumofiber | 49.9K | 262.1K | 44 |
| AS33339US | NEMONT-CELLULAR - Nemont | 49.9K | 65.5K | 124 |
| AS1820US | WNET - WNET TELECOM USA Corp. | 49.7K | 594K | 46 |
| AS2734US | CORESITE - CoreSite | 49.7K | 110.6K | 86 |
| AS11403US | NYINTERNET - NYI | 49.7K | 139.3K | 32 |
| AS2923US | AS-TIAA-NET - TIAA-CREF | 49.7K | — | 29 |
| AS397179US | BRIDGEWATER-COLLEGE - Bridgewater College | 49.4K | — | 4 |
| AS15243US | WIDENER - Widener University | 49.4K | — | 4 |
| AS11071US | IW-ASN-11071 - InfoWest | 49.4K | 201.2K | 36 |
| AS6620US | AS-6620 - AMA Communications, LLC | 49.4K | — | 101 |
| AS167US | WESLEYAN-AS - Wesleyan University | 49.4K | — | 3 |
| AS26367US | BRADLEY-UNIVERSITY - Bradley University | 49.2K | — | 7 |
| AS22987US | BRIGHTRIDGE - BrightRidge | 49.2K | 65.5K | 4 |
| AS36105US | BBT-ISP - Big Bend Telephone Company, Inc. | 49.2K | — | 34 |
| AS398143US | TRUESTREAM - Great Lakes Energy Connections Inc. | 49.2K | 65.5K | 12 |
| AS11050US | KENT-STATE - Kent State University | 49.2K | — | 3 |
| AS14263US | SD-NET - South Dakota State Government | 49.2K | 65.5K | 8 |
| AS53260US | CLARKU - Clark University | 49.2K | — | 9 |
| AS398446US | COOPERATIVE-CONNECTION-01 - Cooperative Connection, LLC | 49.2K | 65.5K | 16 |
| AS14543US | SRT-ASN - SRT Communications, Inc. | 48.6K | 65.5K | 15 |
| AS10913US | INTERNAP-BLK - Unitas Global | 48.6K | 65.5K | 35 |
| AS19024US | INTERNAP-BLK5 - Unitas Global | 48.6K | 65.5K | 24 |
| AS21782US | PLATEAU - Plateau Telecommunications Incorporated | 48.4K | 65.5K | 21 |
| AS33651US | CMCS - Comcast Cable Communications, LLC | 48.4K | 203 | 270 |
| AS400662US | DOBSON-ASN-02 - Dobson Technologies - Transport and Telecom Solutions, LLC | 48.4K | — | 150 |
| AS23118US | SKYBEST - Skyline Telephone | 48.1K | 65.5K | 79 |
| AS397733US | AS-NYSED - New York State Education Department | 47.9K | — | 47 |
| AS19893US | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 47.6K | 4.1K | 34 |
| AS22379US | MANIFOLD - Manifold Services Inc | 47.6K | 287.5K | 166 |
| AS21886US | NETRIX IT SERVICES - Netrix LLC | 47.6K | — | 18 |