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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 |
| — |
| — |
| 0 |
| AS3513US | INET-ON-RAMP - Internet On-Ramp, Inc. | — | — | 0 |
| AS3591US | EMORY - Emory University | — | — | 0 |
| AS3622US | MCIASN-BLK - Verizon Business | — | — | 0 |
| AS3639US | AS-BIZNET - Mystic Valley Communications | — | — | 0 |
| AS3665US | DNIC-ASBLK-03664-03667 - United States Department of Defense (DoD) | — | — | 0 |
| AS3703US | EARTHLINK - Windstream Communications LLC | — | — | 0 |
| AS3760US | TX-DEPT-AGR - Texas Department of Agriculture | — | — | 0 |
| AS3857US | INC - Internet Connect, Inc. | — | — | 0 |
| AS3864US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS3869US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS3897US | DNIC-ASBLK-03859-03897 - Headquarters, USAISC | — | — | 0 |
| AS3966US | INTERLINK-4 - Verizon Business | — | — | 0 |
| AS3980US | UTELFLA - Sprint/United Telephone-Florida | — | — | 0 |
| AS3982US | UTELFLA - Sprint/United Telephone-Florida | — | — | 0 |
| AS3985US | UTELFLA - Sprint/United Telephone-Florida | — | — | 0 |
| AS4028US | ASN-4020-1 - Air Force Systems Networking | — | — | 0 |
| AS4036US | ASN-4020-1 - Air Force Systems Networking | — | — | 0 |
| AS4051US | PACAFINY-GW - U. S. Air Force | — | — | 0 |
| AS4052US | ROVI - Rovi Corporation | — | — | 0 |
| AS4064US | COGENT-4064 - Cogent Communications, LLC | — | — | 0 |
| AS4065US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4083US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4084US | DNIC-ASBLK-04065-04125 - Headquarters, USAISC | — | — | 0 |
| AS4140US | INMIND - In Mind, Inc. | — | — | 0 |
| AS4144US | INTERGUIDE - InterGuide Communications | — | — | 0 |
| AS4159US | ONEWORLD-AS-1 - One World Productions | — | — | 0 |
| AS4177US | WORLTEK - AT73 | — | — | 0 |
| AS4227US | TCCGI-AS - The Chesapeake Computer Group, Incorporated | — | — | 0 |
| AS4311US | WINC - Winfield Communications | — | — | 0 |
| AS4317US | MLECNET - Mille Lacs Energy Cooperative | — | — | 0 |
| AS4318US | ADC-ASN - Freeport-McMoRan Inc. | — | — | 0 |
| AS4334US | DNIC-ASBLK-04328-04351 - Headquarters, USAISC | — | — | 0 |
| AS4341US | DNIC-ASBLK-04328-04351 - Headquarters, USAISC | — | — | 0 |
| AS4362US | DIGITOPIA-AS - Mediapolis, Inc. | — | — | 0 |
| AS4363US | WORLDRAMP-ASNAME - World Ramp Inc. | — | — | 0 |
| AS4399US | DSI-CUST-BLK2 - Houston Associates, Inc. | — | — | 0 |
| AS4463US | ONET3-DOM - ONET, Inc. | — | — | 0 |
| AS4525US | POPPE - 707 California Street | — | — | 0 |
| AS4550US | COGENT-4550 - Cogent Communications, LLC | — | — | 0 |
| AS4552US | CL-260-4552 - CyrusOne LLC | — | — | 0 |
| AS4560US | AS4560 - Anton Kapela, Sole Proprietorship | — | — | 0 |
| AS4595US | 2020-4595 - 2020 Communications LLC | — | — | 0 |
| AS4881US | CITY-OF-ALBANY - City of Albany Water, Gas & Light Commission | — | — | 0 |
| AS4929US | BENCHMARK - Benchmark Communications | — | — | 0 |
| AS4938US | SPRINTNET-SC - Sprint Mid-Atlantic Telecom | — | — | 0 |
| AS4952US | CAPECOD - Intramedia | — | — | 0 |