Jupiter Telecommunications Co., Ltd. operates as a multiple system and channel operator in Japan. It offers multi-channel cable television services through J:COM TV and J:COM TV Digital; high-speed Internet access services through J:COM NET; telephony services through J:COM PHONE; and mobile phone services through J:COM MOBILE. The company also invests in and operates 17 premium channels, which are provided to cable television, satellite, and Internet protocol multicast providers; and provides J:COM Earthquake Alert services. The company was founded in 1995 and is headquartered in Tokyo, Japan. Jupiter Telecommunications Co., Ltd. is a subsidiary of LGI/Sumisho Super Media, LLC.