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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) | 227.4M | 3,133 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 217.9M | 24,372 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 643 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.7M | 1,322 |
| 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.
32,235 autonomous systems registered to United States. Click an AS for detail.
| 72.9M |
| 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC | 68.3M | 437 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 51.6M | 3,906 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.9M | 2,006 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.7M | 4,275 |
| 45.1K |
| 131.1K |
| 73 |
| AS29789US | REFLECTED - Reflected Networks, Inc. | 45.1K | 65.6K | 58 |
| AS63018US | DEDICATED - Dedicated.com | 45.1K | 65.5K | 162 |
| AS32709US | 1-JOINK - Joink, LLC | 45.1K | 65.5K | 5 |
| AS13692US | DFN-ASN-1 - Douglas FastNet | 45.3K | 65.5K | 31 |
| AS20283US | CTC-INTERNET-MN - CONSOLIDATED TELEPHONE COMPANY | 45.3K | 65.5K | 17 |
| AS26727US | BBTEL - Brandenburg Telephone Company | 45.6K | 70.4K | 31 |
| AS25993US | ATT-LABS-AUSTIN-TX - AT&T Enterprises, LLC | 45.6K | 2 | 25 |
| AS40545US | EMPIRE-40545 - Empire Access | 45.8K | 65.5K | 12 |
| AS571US | DNIC-AS-00571 - United States Department of Defense (DoD) | 46.1K | 1 | 64 |
| AS22926US | AS-WISPER - Wisper ISP, LLC | 46.1K | 65.5K | 18 |
| AS400186US | SINGING-RIVER-CONNECT - Singing River Connect, LLC | 46.6K | — | 83 |
| AS26479US | SDC-AS - Point Broadband Fiber Holding, LLC | 46.6K | 65.5K | 31 |
| AS11396US | TWC-ASN - Williams Information Technology LLC | 46.6K | — | 25 |
| AS32329US | MONKEYBRAINS - Another Corporate ISP, LLC | 46.6K | 65.5K | 36 |
| AS63450US | ETHERWEBNET - Ether Web Network, Inc. | 46.6K | — | 28 |
| AS395015US | SUNY-FREDONIA - SUNY College at Fredonia | 46.6K | — | 91 |
| AS55039US | FATBEAM-AS - Fatbeam, LLC | 46.8K | 4.6K | 81 |
| AS214483US | FIBERPOWER-AS FiberPower LLC | 46.8K | 9.7M | 147 |
| AS33491US | COMCAST-33491 - Comcast Cable Communications, LLC | 46.8K | 201 | 282 |
| AS16604US | FWB-NE - HUNTEL.NET | 46.8K | 81.9K | 73 |
| AS46269US | KRONOS-MA - UKG Kronos Systems, LLC | 46.8K | 1 | 75 |
| AS395228US | ADIENT - Adient US LLC | 46.8K | — | 25 |
| AS46410US | CFEC-1 - Central Florida Electric Cooperative, Inc. | 46.8K | 65.5K | 80 |
| AS30598US | CCL-ASN - Carnival Corporation | 46.8K | 1 | 19 |
| AS7015US | COMCAST-7015 - Comcast Cable Communications, LLC | 47.1K | 420 | 540 |
| AS14745US | INTERNAP-BLOCK-4 - Unitas Global | 47.4K | 65.5K | 45 |
| AS21886US | NETRIX IT SERVICES - Netrix LLC | 47.4K | — | 17 |
| AS23033US | WOW - Wowrack.com | 47.6K | 65.5K | 35 |
| AS22379US | MANIFOLD - Manifold Services Inc | 47.6K | 291.6K | 167 |
| AS19893US | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 47.6K | 4.1K | 34 |
| AS397733US | AS-NYSED - New York State Education Department | 47.9K | — | 47 |
| AS23118US | SKYBEST - Skyline Telephone | 48.1K | 65.5K | 79 |
| AS400391US | WGL-107-PACIFIC-WYYERD - Pacific Wyyerd LLC | 48.1K | — | 37 |
| AS21782US | PLATEAU - Plateau Telecommunications Incorporated | 48.4K | 65.5K | 21 |
| AS54641US | IMH-IAD - InMotion Hosting, Inc. | 48.4K | 2 | 55 |
| AS400662US | DOBSON-ASN-02 - Dobson Technologies - Transport and Telecom Solutions, LLC | 48.4K | — | 150 |
| AS10913US | INTERNAP-BLK - Unitas Global | 48.6K | 65.5K | 35 |
| AS19024US | INTERNAP-BLK5 - Unitas Global | 48.6K | 65.5K | 24 |
| AS14543US | SRT-ASN - SRT Communications, Inc. | 48.6K | 65.5K | 15 |
| AS23470US | RELIABLESITE - ReliableSite.Net LLC | 48.9K | 2.2K | 219 |
| AS36105US | BBT-ISP - Big Bend Telephone Company, Inc. | 49.2K | — | 34 |
| AS22987US | BRIGHTRIDGE - BrightRidge | 49.2K | 65.5K | 4 |
| AS53260US | CLARKU - Clark University | 49.2K | — | 9 |
| AS398143US | TRUESTREAM - Great Lakes Energy Connections Inc. | 49.2K | 65.5K | 12 |
| AS398446US | COOPERATIVE-CONNECTION-01 - Cooperative Connection, LLC | 49.2K | 65.5K | 16 |
| AS14263US | SD-NET - South Dakota State Government | 49.2K | 65.5K | 8 |