Deutsche Telekom AG is a German telecommunications company that is headquartered in Bonn and is the largest telecommunications provider in Europe by revenue. 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). Furthermore, Magyar Telekom holds majority shares in Makedonski Telekom (North Macedonia), and Hrvatski Telekom (Croatia) holds majority shares in Crnogorski Telekom (Montenegro).