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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 | 3,136 |
| AS16509US | AMAZON-02 - Amazon.com, Inc. | 210.5M | 20,721 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 113.7M | 638 |
| AS721US | DNIC-ASBLK-00721-00726 - United States Department of Defense (DoD) | 73.1M | 229 |
| AS7922US | COMCAST-7922 - Comcast Cable Communications, LLC |
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.
31,994 autonomous systems registered to United States. Click an AS for detail.
| 68.3M |
| 366 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 66.4M | 1,106 |
| AS396982US | GOOGLE-CLOUD-PLATFORM - Google LLC | 47.9M | 3,574 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.7M | 1,926 |
| AS701US | UUNET - Verizon Business | 43.6M | 1,000 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.2M | 4,508 |
| AS-NYSED - New York State Education Department |
| 47.9K |
| — |
| 47 |
| AS19893US | NTT-GLOBAL-DATA-CENTERS-AMERICA-INC - NTT Global Data Centers Americas, INC. | 47.9K | 4.1K | 35 |
| AS21886US | NETRIX IT SERVICES - Netrix LLC | 47.6K | — | 18 |
| AS15083US | INFOLINK-MIA-US - Infolink Global Corporation | 47.4K | 131.1K | 59 |
| AS13414US | TWITTER - Twitter Inc. | 47.4K | 12.3K | 43 |
| AS1501US | DNIC-ASBLK-01500-01502 - Headquarters, USAISC | 47.1K | — | 129 |
| AS7015US | COMCAST-7015 - Comcast Cable Communications, LLC | 47.1K | 442 | 562 |
| AS395228US | ADIENT - Adient US LLC | 46.8K | — | 25 |
| AS46269US | KRONOS-MA - UKG Kronos Systems, LLC | 46.8K | 1 | 75 |
| AS400186US | SINGING-RIVER-CONNECT - Singing River Connect, LLC | 46.8K | — | 83 |
| AS32329US | MONKEYBRAINS - Another Corporate ISP, LLC | 46.6K | 65.5K | 36 |
| AS400662US | DOBSON-ASN-02 - Dobson Technologies - Transport and Telecom Solutions, LLC | 46.6K | — | 143 |
| AS46410US | CFEC-1 - Central Florida Electric Cooperative, Inc. | 46.6K | 65.5K | 82 |
| AS395015US | SUNY-FREDONIA - SUNY College at Fredonia | 46.6K | — | 91 |
| AS22926US | AS-WISPER - Wisper ISP, LLC | 46.1K | 65.5K | 18 |
| AS571US | DNIC-AS-00571 - United States Department of Defense (DoD) | 46.1K | 1 | 64 |
| AS399007US | EASTMSCONNECT-01 - East Mississippi Connect, LLC | 46.1K | 65.5K | 46 |
| AS21554US | CYBERLYNK - Wisconsin CyberLynk Network, Inc. | 45.8K | 131.1K | 66 |
| AS23470US | RELIABLESITE - ReliableSite.Net LLC | 45.8K | 2.1K | 204 |
| AS23033US | WOW - Wowrack.com | 45.8K | 65.5K | 36 |
| AS14860US | AS-SMARTCOM - SMARTCOM TELEPHONE, LLC | 45.6K | 135.2K | 31 |
| AS394432US | PEG-SG - PEG TECH INC | 45.6K | — | 29 |
| AS22379US | MANIFOLD - Manifold Services Inc | 45.6K | 295.7K | 167 |
| AS33152US | KCEC-ASN - Kit Carson Electric Cooperative, Inc | 45.6K | 65.5K | 40 |
| AS11994US | CZIO-ASN - Cruzio | 45.3K | — | 23 |
| AS20283US | CTC-INTERNET-MN - CONSOLIDATED TELEPHONE COMPANY | 45.3K | 65.5K | 17 |
| AS11191US | CALNET - Cal.net, Inc. | 45.1K | — | 78 |
| AS29789US | REFLECTED - Reflected Networks, Inc. | 45.1K | 65.6K | 58 |
| AS26744US | PCL - Planters Communications, LLC | 45.1K | 131.1K | 73 |
| AS32709US | 1-JOINK - Joink, LLC | 45.1K | 65.5K | 5 |
| AS7151US | COLOGIX-SV - Cologix, Inc | 45.1K | 65.5K | 6 |
| AS30598US | CCL-ASN - Carnival Corporation | 44.8K | 1 | 18 |
| AS10912US | INTERNAP-BLK - Unitas Global | 44.8K | 65.5K | 41 |
| AS393559US | WEBBING-USA - WEBBING USA, INC. | 44.8K | 1.3K | 117 |
| AS5048US | FIBER - FIBERNET Corp. | 44.8K | — | 10 |
| AS25993US | ATT-LABS-AUSTIN-TX - AT&T Enterprises, LLC | 44.5K | 2 | 24 |
| AS53587US | AZT - AZURE TECHNOLOGY CO., LIMITED | 44.5K | 65.5K | 85 |
| AS11396US | TWC-ASN - Williams Information Technology LLC | 44.5K | — | 23 |
| AS21782US | PLATEAU - Plateau Telecommunications Incorporated | 44.3K | 65.5K | 20 |
| AS26463US | MISD-NET - Macomb Intermediate School District | 44.3K | — | 46 |
| AS22697US | ROBLOX-PRODUCTION - Roblox | 44.3K | 267 | 57 |
| AS13692US | DFN-ASN-1 - Douglas FastNet | 44.3K | 65.5K | 30 |
| AS40913US | QTS-SJC - Quality Technology Services, LLC | 44K | 65.6K | 22 |
| AS398378US | BOOST-MOBILE - Boost Mobile | 44K | 2 | 31 |
| AS29968US | ASN-NETSYNC - Dunkirk & Fredonia Telephone Company | 43.8K | — | 38 |
| AS3842US | RAMNODE - InMotion Hosting, Inc. | 43.8K | 14 | 58 |
| AS393397US | LREC-LRT - Lake Region Electric Cooperative, Inc | 43.8K | 65.5K | 64 |