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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 | 24,555 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,303 |
| 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.
32,168 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 | 3,885 |
| AS714US | APPLE-ENGINEERING - Apple Inc. | 44.8M | 1,995 |
| AS701US | UUNET - Verizon Business | 43.6M | 994 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,354 |
| 512 |
| 4.1K |
| 3 |
| AS399488US | DSB - Demotte State Bank | 512 | — | 2 |
| AS53581US | IDL-76-53581 - Inland FIber | 512 | — | 2 |
| AS401239US | ASN-RKECO-NET - Roanoke County | 512 | — | 2 |
| AS395737US | UFCU - University Federal Credit Union | 512 | — | 2 |
| AS395740US | CHOCTAW-NATION-OF-OKLAHOMA - Choctaw Nation of Oklahoma | 512 | — | 2 |
| AS26282US | SYMANTEC-US - Avago Technologies U.S. Inc. | 512 | 2 | 4 |
| AS401468US | WVW - WvW | 512 | 257 | 4 |
| AS40347US | EAUCLAIRE-COUNTY - Eau Claire County | 512 | — | 1 |
| AS397925US | REDEYE-ATL-DC2 - RedEye Network Solutions LLC | 512 | — | 2 |
| AS54528US | RICHIE-USA - Richie Software USA, Inc. | 512 | 17 | 4 |
| AS36569US | KMBC-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS40666US | SABIC-INNOVATIVE-PLASTICS-US-LLC - SABIC INNOVATIVE PLASTICS US, LLC | 512 | — | 2 |
| AS7234US | RUSSELL7234 - Frank Russell | 512 | — | 1 |
| AS23433US | STAMPS-COM - STAMPS.COM | 512 | — | 2 |
| AS394049US | UWHCA - University of Wisconsin Hospital and Clinics | 512 | — | 2 |
| AS401459US | AS-UADA - Division of Agriculture of the University of Arkansas | 512 | — | 2 |
| AS399947US | AURORA-GEO - Pacific Dataport Inc. | 512 | — | 1 |
| AS14528US | SHOTSPOTTER-01 - SHOTSPOTTER, INC. | 512 | — | 2 |
| AS399658US | CH3 - Guaranteed Rate Inc | 512 | — | 2 |
| AS16856US | BLESSING-HEALTH-SYSTEM-AS - Blessing Hospital | 512 | — | 2 |
| AS258US | BRAGGSRI-EGP-AS - Headquarters, USAISC | 512 | — | 2 |
| AS40639US | KORBELINC - F Korbel & Bros Inc | 512 | — | 2 |
| AS1642US | COLORCON - Colorcon Inc | 512 | — | 2 |
| AS397133US | USG-NPE-WEST01 - ULTIMATE SOFTWARE GROUP | 512 | — | 2 |
| AS36578US | WISN-TV - Hearst-Argyle Television, Inc. | 512 | — | 2 |
| AS25699US | WILSONART-INTL - Wilsonart International | 512 | — | 2 |
| AS19860US | OPTIV-US-AS1 - OPTIVER US LLC | 512 | — | 2 |
| AS40442US | ARCUSTECH - Arcustech, LLC | 512 | — | 2 |
| AS400703US | BB-7700 - Bankers' Bank | 512 | — | 2 |
| AS395183US | ETEC-CORP-AS - ETEC | 512 | — | 2 |
| AS394918US | TBI-ASN-3 - TrueBlue, Inc. | 512 | — | 1 |
| AS394358US | SECU-1 - State Employees' Credit Union | 512 | — | 2 |
| AS400012US | YISD-COLO-500 - Ysleta Independent School District | 512 | — | 2 |
| AS16737US | STABLEHOST - Nerdie Networks LLC | 512 | — | 2 |
| AS63165US | CCPS-17ASN - Clayton County Public Schools | 512 | — | 2 |
| AS395695US | TEGNA-KPNX - TEGNA Inc. | 512 | — | 2 |
| AS53775US | SEKISUI KYDEX - Sekisui KYDEX, LLC | 512 | — | 2 |
| AS11479US | BRM-SUN-AS - Oracle Corporation | 512 | — | 2 |
| AS40338US | B-F - Brown-Forman Corporation | 512 | — | 1 |
| AS32606US | MARCUS-CORP - The Marcus Corporation | 512 | — | 2 |
| AS54620US | GNSGLOBAL - Generic Network Systems, LLC | 512 | — | 2 |
| AS394040US | WELLS-ENTERPRISES - Wells Enterprises, Inc. | 512 | — | 2 |
| AS399929US | MAA-ASN-01 - Mid-America Apartments, L.P. | 512 | — | 2 |
| AS394623US | AHA-MH-BGP - American Hospital Association | 512 | — | 2 |
| AS7448US | CHOICE-HOTELS - Choice Hotels International, Inc. | 512 | — | 2 |
| AS398863US | WHITECAP - White Cap Construction Supply | 512 | — | 2 |