By playing an active part in merging smaller companies into a powerful network, the Tele Columbus Group unites a larger number of individual companies under a unified management and one brand. The 100 percent shareholdings in the Tele Columbus Group include a number of regional subsidiaries by the same name, such as Tele Columbus Multimedia GmbH, Tele Columbus Netze Berlin GmbH or Tele Columbus Sachsen-Thüringen GmbH, as well as other wholly-owned subsidiaries, such as BMB Geschäftsführung GmbH, RFC Radio-, Fernseh- und Computertechnik GmbH, PrimaCom Holding GmbH, pepcom GmbH or HL Komm Telekommunikations GmbH.
The Tele Columbus Group also holds other interests, for example in the operators MDCC Magdeburg-City-Com GmbH, which also acts as a telephone carrier for Tele Columbus, BBcom Berlin-Brandenburgische Communicationsgesellschaft mbH and Kabelfernsehen München ServiCenter GmbH & Co. KG.
