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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 | 24,540 |
| AS7018US | ATT-INTERNET4 - AT&T Enterprises, LLC | 117.3M | 644 |
| AS8075US | MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation | 81.6M | 1,305 |
| 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.
32,187 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 | 2,002 |
| AS701US | UUNET - Verizon Business | 43.6M | 993 |
| AS174US | COGENT-174 - Cogent Communications, LLC | 37.6M | 4,362 |
| 256 |
| — |
| 1 |
| AS401720US | UNREDACTED-AS - Unredacted Inc | 256 | 1 | 2 |
| AS400713US | MAXIM-STAFFING - Amergis Healthcare Staffing, Inc. | 256 | — | 1 |
| AS13556US | IVANET-MIAMI - IBASIS INC. | 256 | — | 1 |
| AS397581US | MGS-EXIT-HUB - MIC GLOBAL SERVICES, LLC | 256 | — | 1 |
| AS398111US | MAVERICK-TRANSPORTATION-LLC-01 - Maverick Transportation, LLC | 256 | — | 1 |
| AS400216US | PARKWAY-SCHOOL-DISTRICT - Parkway School District | 256 | — | 1 |
| AS673US | DNIC-AS-00673 - Headquarters, USAISC | 256 | — | 1 |
| AS399496US | SYBT - STOCK YARDS BANK AND TRUST COMPANY | 256 | — | 1 |
| AS400392US | EMPIRE-1 - Empire Resorts, Inc. | 256 | — | 1 |
| AS399424US | RELEASEPOINT1 - Releasepoint | 256 | — | 1 |
| AS401252US | TOMBALLISD - Tomball Independent School District | 256 | — | 1 |
| AS400904US | KEY-MANAGEMENT - Key Investment | 256 | — | 1 |
| AS4374US | CKE-RESTAURANTS - CKE Restaurants Holdings, Inc. | 256 | — | 1 |
| AS31786US | ZOOMINGWORK-LLC - PloxHost | 256 | 2 | 3 |
| AS393904US | CGTNV - Century Gaming Technologies | 256 | — | 1 |
| AS32119US | WESLEYAN-SCHOOL - Wesleyan School, Inc. | 256 | 256 | 2 |
| AS53749US | MWT - Midwest Tape | 256 | — | 1 |
| AS54050US | GPMLIFE - Government Personnel Mutual Life Insurance Company | 256 | — | 1 |
| AS400937US | DCNV-ASN-01 - Douglas County, Nevada | 256 | — | 1 |
| AS54970US | NORTHERN-AIR-CARGO - NORTHERN AIR CARGO | 256 | — | 1 |
| AS26683US | DASH FT - BB - Dash Financial Technologies LLC | 256 | — | 1 |
| AS402217US | COASTELECTRIC-01 - Coast Electric | 256 | — | 1 |
| AS395274US | LAKE-TRAVIS-ISD - Lake Travis ISD | 256 | — | 1 |
| AS402845US | NEROA - Neroa | 256 | 4.1K | 2 |
| AS32685US | AEG-VISION - AEG Vision | 256 | — | 1 |
| AS401151US | MCOR-AS - Marion County | 256 | — | 1 |
| AS23527US | CHRISTCATHEDRALCA - Christ Catholic Cathedral Corporation | 256 | — | 1 |
| AS1909US | CAIDA - San Diego Supercomputer Center | 256 | 2K | 3 |
| AS398707US | PUEBLO-DE-COCHITI-NSN - Pueblo de Cochiti | 256 | 65.5K | 2 |
| AS16533US | AS-SAFETY-INSURANCE - Safety Insurance Company | 256 | — | 1 |
| AS13714US | AS-AFILIAS-SYD1 - Afilias, Inc. | 256 | — | 1 |
| AS46884US | SERVICELINK-2 - ServiceLink Holdings, LLC | 256 | — | 1 |
| AS401523US | AUCTIONHARMONY - Auction Harmony | 256 | 1 | 2 |
| AS402092US | WEBSEC - WEBSEC | 256 | — | 1 |
| AS393389US | ECLIPSE COMMUNICATIONS - Eclipse Communications | 256 | — | 1 |
| AS36359US | WORTH-CIT-SCHOOLS-OH - Worthington City Schools | 256 | 1 | 2 |
| AS32777US | SMART-CITY-IXCC - SMART CITY NETWORKS, LIMITED PARTNERSHIP | 256 | — | 1 |
| AS33376US | CASTLE-HARLAN - Castle Harlan | 256 | — | 1 |
| AS26495US | CTCCP-ASN - Coast to Coast Computer Products | 256 | — | 1 |
| AS400067US | BNP-ASNBLOCK-01 - BNP Media, INC | 256 | — | 1 |
| AS36585US | CITY-OF-GREELEY - City of Greeley | 256 | — | 1 |
| AS30080US | ARNOLD-MAGNETIC-TECHNOLOGIES-CORP-BGP - Arnold Magnetic Technologies Corporation | 256 | — | 1 |
| AS402818US | VENICE-NET-1 - Venice.ai | 256 | — | 1 |
| AS62678US | HORACEMANNSCHOOL - Horace Mann School | 256 | — | 1 |
| AS397120US | CHEMUNGCONY - Chemung County, New York | 256 | — | 1 |
| AS35841US | CHATS-ASN - CHATSWORTH PRODUCTS, INC. | 256 | — | 1 |