Jan Lange

1&1 Versatel GmbH engages in the provision of telecommunication services for small, medium-sized, and large enterprises, public institutions, communities, and municipal companies. It offers telephone, Internet, mobile, hosting, voice and site networking, personal consulting, email and web protection services. The firm also manages and develops a fiber network infrastructure. The company was founded in 1999 and is headquartered in Berlin, Germany.

Vodafone Deutschland GmbH engages in the provision of television, telecommunications, and multimedia services. It focuses on areas such as Internet, telephone, cable television, and wireless mobile networks. The company was founded on December 17, 2002 and is headquartered in Unterfoehring, Germany.

UPC Cablecom Holdings GmbH provides cable television services. It offers comprehensive, interactive communications for both residential and business customers. The company's brand cablecom digital TV provides more than 100 television channels as well as broadband internet services. The company was founded in 1931 and is headquartered in Zurich, Switzerland.

Part of United Internet AG, IQ-optimize Software AG is a software manufacturer and IT service provider founded in 2001. The company is based in Maintal, Germany and provides modern, innovative software technology to optimize business processes, develop software solutions, and design web shops/websites. IQ-optimize Software offers reliable and customer-oriented IT services to its customers.

1&1 Internet AG provides web hosting services. The private company is based in Montabaur, Germany.

Part of Liberty Global Plc, UPC Cablecom Austria GmbH is an Austrian company that provides cable and other pay television services. The company is based in Vienna, Austria.

Part of United Internet AG, TROPOLYS Netz GmbH is a German company that provides telecommunication services. The company is based in Dusseldorf, Germany. The CEOs are Guido Mannshausen, Jörg Elsäßer, Walter Denk. The company was founded in 2009.

Part of United Internet AG, Tropolys Service GmbH is a German company that provides electrical installation services. The company is based in Dusseldorf, Germany. The CEOs of the company are Guido Mannshausen, Jörg Elsäßer, Walter Denk.