Vlasios Choulidis

Part of United Internet AG, 1 & 1 Telecommunication AG is a German company that provides internet services to private and commercial customers. The company is based in Montabaur, Germany. Martin Witt has been the CEO of the company since 2014. 1&1 Telecommunication AG was acquired by Drillisch AG from United Internet AG on September 08, 2017 for $6,772.12 million.

Part of United Internet AG, Drillisch Online GmbH is a leading provider of cheap and innovative mobile phone solutions. The private company is based in Maintal, Germany and offers attractive tariff models online with a convincing price/performance ratio. Different positioned brands under the roof of Drillisch Online offer the optimal tariff for each user and a large selection of current smartphones. The CEOs of the German company are Justus von Bergmann, Robin Harries, Heiko Hambückers.

Drillisch AG engages in the provision of mobile voice and data services. It operates through the following segments: Online, Offline and Miscellaneous Holding. The company was founded by Marc Brucherseifer, Hans Jochen Drillisch, and Nico Forster in 1983 and is headquartered in Maintal, Germany.

Part of United Internet AG, IQ-optimize Software AG is a software manufacturer and IT service provider founded in 2001. The private 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.