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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 |
| 145.2K |
| 4 |
| 28 |
| AS11685US | HNBCOL-AS - Huntington National Bank | 145.2K | — | 32 |
| AS53813US | ZSCALER-INC - ZSCALER, INC. | 144.9K | 6.2K | 409 |
| AS3734US | SCCO - Santa Clara County Office of Education | 144.6K | — | 18 |
| AS369US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 144.1K | 256 | 51 |
| AS400511US | CWAVEFIBER - Clearwave Communications | 143.6K | 65.5K | 155 |
| AS18450US | WEBNX - WebNX, Inc. | 143.1K | 84K | 170 |
| AS356US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 142.8K | — | 46 |
| AS3456US | TWC-3456-IT - Charter Communications Inc | 142.8K | 8.2K | 16 |
| AS19229US | IFOXNETODPD-ENSONO-DCCS - Ensono LP | 142.6K | 131.1K | 149 |
| AS21766US | BEN-LOMAND-TEL - BEN LOMAND RURAL TELEPHONE COOPERATIVE, INC. | 141.8K | 1.1M | 105 |
| AS30029US | DOBSONTECHTTS - Dobson Technologies - Transport and Telecom Solutions, LLC | 141.1K | 65.5K | 38 |
| AS293US | ESNET - ESnet | 140.8K | 65.5K | 29 |
| AS20214US | COMCAST-20214 - Comcast Cable Communications, LLC | 140.5K | 91 | 113 |
| AS14499US | ALORICA - ALORICA INC | 140.3K | — | 31 |
| AS401783US | TOKALA-COMMUNICATIONS - TOKALA COMMUNICATIONS INC. | 140.3K | — | 425 |
| AS11870US | ALTICOR-INC - ALTICOR INC | 140.3K | — | 26 |
| AS30710US | SPECT-19-AS - Spectrum Health | 140.3K | — | 8 |
| AS33132US | CROWNCASTLE-AS33132 - Crown Castle Fiber LLC | 140.3K | 65.8K | 73 |
| AS16435US | FLUKE-ELECTRONICS - Fluke Electronics | 140K | — | 7 |
| AS17052US | TARGET - Target Corporation | 139.8K | — | 8 |
| AS26554US | US-SIGNAL - US Signal Company, L.L.C. | 139.8K | 131.1K | 39 |
| AS22US | DNIC-AS-00022 - Navy Network Information Center (NNIC) | 139.5K | 2 | 7 |
| AS393750US | TRUMAN-STATE-UNIVERSITY - Truman State University | 139.5K | — | 23 |
| AS675US | MSUS-AS - Minnesota State Colleges and Universities | 139.3K | 65.5K | 4 |
| AS27274US | CMICH - Central Michigan University | 139.3K | 65.5K | 4 |
| AS336US | DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD) | 139K | 256 | 26 |
| AS6059US | UMS2-ASN - University System of Maryland | 138.8K | 256 | 8 |
| AS26934US | UNIVERSITY-OF-MISSOURI---COLUMBIA - University of Missouri-Columbia | 138.8K | 17 | 9 |
| AS1530US | DNIC-ASBLK-01529-01530 - Headquarters, USAISC | 138.5K | 256 | 18 |
| AS11809US | NET-ERAU-PRC - Embry-Riddle University | 138K | — | 15 |
| AS25996US | FBICJIS - FBI Criminal Justice Information Services | 138K | 516 | 43 |
| AS26101US | YAHOO-BF1 - Yahoo Holdings Inc. | 138K | 16 | 83 |
| AS7867US | TECHDATA - TECH DATA CORPORATION | 138K | — | 30 |
| AS377US | SNLA-NET-AS - Sandia National Laboratories | 137.7K | 1 | 11 |
| AS10242US | USINTERNET - US Internet Corp | 137.7K | 1M | 37 |
| AS27026US | NETWORKMARYLAND - networkMaryland | 137.7K | 65.5K | 27 |
| AS35985US | ONERINGNET-ATL-1 - One Ring Networks, Inc. | 137.5K | 1.2M | 46 |
| AS33442US | ZEBRA-TECHNOLOGIES-BGP-AS-NUMBER - Zebra Technologies Corporation | 137.2K | 2 | 28 |
| AS88US | PRINCETON-AS - Princeton University | 137.2K | 4.1K | 10 |
| AS7973US | MAYO - Mayo Foundation for Medical Education and Research | 137.2K | — | 15 |
| AS36315US | SERVPAC - Servpac Inc. | 136.7K | — | 34 |
| AS7849US | APC-CC - RingSquared CC | 136.4K | — | 8 |
| AS35US | MITRE-AS-1 - The MITRE Corporation | 136.4K | — | 9 |
| AS2642US | LEG-CA-GOV - California Department of Technology | 136.2K | — | 22 |
| AS5723US | JHU - Johns Hopkins University | 135.9K | 65.5K | 9 |
| AS22093US | CCF-NETWORK - Cleveland Clinic Foundation | 135.4K | — | 13 |