Deutsche Telekom is a German telecommunications company headquartered in Bonn and by revenue the largest telecommunications provider in Europe.

Deutsche Telekom was formed in 1995. The company operates several subsidiaries worldwide, including the mobile communications brand T-Mobile.

Deutsche Telekom also holds substantial shares in other telecom companies, including Central European subsidiaries Slovak Telekom (Slovakia), Magyar Telekom (Hungary). 

As of March 2020, the German government holds a 14.5% stake in company stock directly, and another 17.4% through the government bank KfW. The company is a component of the Euro Stoxx 50 stock market index. 

According to en.wikipedia