AT-X (アニメシアターX, Anime Shiatā X, lit. "Anime Theater X") is a Japanese anime television network owned by AT-X, Inc. (株式会社エー・ティー・エックス Kabushiki kaisha Ē-Tī-Ekkusu?). AT-X, Inc. was founded on June 26, 2000 as a subsidiary of TV Tokyo Medianet, which, in turn, is a subsidiary of TV Tokyo. Its headquarters are in Minato, Tokyo. AT-X network has been broadcasting anime via satellite and cable since December 24, 1997.
The network aired some TV Tokyo anime series, like Medaka Box, Golgo 13, and Naruto, anime aired in other networks like Sword Art Online and Muv-Luv Alternative Total Eclipse, even uncensored anime like Panty and Stocking with Garterbelt.
In April 18, 2013, My Little Pony: Friendship Is Magic marked the first non-Japanese cartoon to air on AT-X after its japanese dub release on TV Tokyo. Which AT-X will start airing Harmony Unleashed: Human Ponidox Continuum Shift the day after. Also, they will air Harmony Unleashed: Anthro Bunraku: THE ANIMATION in September part of the Harmony Unleashed Zone programming block airing on Friday Nights, along with Equestrian Trinity while it is still running on TV Tokyo since July.