Ulf Michaelis

Part of Deutsche Telekom AG, congstar GmbH is a mobile phone service provider based in Cologne, Germany. The German company offers prepaid and contract tariffs with various options for mobile, home internet, and landline services. Customers can easily upgrade their plans online and download forms and manuals for their devices. Congstar has been named the mobile phone provider of the year for its affordable and fair contracts with and without fixed terms, and its LTE 50-option for surfing at up to 50 Mbit/s. The company was founded in 2007, and its CEO is Axel Orbach.

Part of Telefónica SA, Telefónica Germany Retail GmbH is a telecommunications company based in Dusseldorf, Germany. The CEOs of the company are Tobias Juchmes, Michael Kieninger, Kai-Uwe Laag.

Telefónica Germany GmbH & Co. oHG engages in telecommunication services. It specializes in digitalisation, protection and security of personal data, ad network processing. The company was founded in May 1995 and is headquartered in Munich, Germany.

Deutsche Glasfaser Holding GmbH provides broadband services. It offers glass fiber, DG router, router, and speedtest. The company is headquartered in Borken, Germany.

Deutsche Glasfaser Asset I GmbH provides high-speed internet, telephone, and television services with up to 1 Gbit/s (1000 Mbit/s) through fiber optic (FTTH) connections. The private company is based in Monheim am Rhein, Germany. The German company offers an easy-to-understand and transparent billing system for its DG-combo packages. The fiber optic installation in your property has many benefits, including increased value, higher attractiveness, and a free full installation. Customers can stay informed about current disruptions and maintenance through the company's website. The CEOs of the company are Thorsten Dirks, Guido Eidmann, Angie Hagemann.

Part of Deutsche Glasfaser Holding GmbH, Deutsche Glasfaser Wholesale GmbH is a German company that delivers internet, telephone, and television services with speeds of up to 1 Gbit/s. The company is based in Borken, Germany. The company connects homes to the internet of the future and offer a range of products and services related to fiber optic technology. The company provides customer support through phone, email, and a contact form. It was founded in 2013 and is led by CEOs Angie Hagemann, Guido Eidmann, and Thorsten Dirks.

Part of Telefónica SA, TGCS Rostock GmbH is a telecommunications company based in Munich, Germany. The CEOs are Maria Cristina Méndez Echevarria, Torsten Brühl. TGCS Rostock provides telecommunications services. The German company was founded in 1995.