André Krause

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.

Sunrise Communications AG engages in the provision of telecommunications services. The firm offers mobile, Internet, landline, and television network. It distributes its products under the Sunrise and yallo brands. The company was founded in 1996 and is headquartered in Zurich, Switzerland.

O2 Germany GmbH & Co. OHG provides telecommunications services. It provides mobile services to subscribers in Germany. Its customers include BMW, Christian Dior and TCHIBO. The company introduced 3G service to business and consumer customers and it has a joint venture with TCHIBO to sell pre-paid service under the Tchibo Mobilfunk name. The company was founded in 1995 and is headquartered in Munich, Germany.

Sunrise Communications Group AG operates as a holding company which provides telecommunication services. The company operates through following segments: Residential, Business, Wholesale, and Head Office. The Residential segment provides fixed line and mobile services to residential end customers as well as sales of handsets. The Business segment offers a full range of products and services, from fixed-line and mobile communications to Internet and data services as well as integration services to different business areas such as small and home office, small and medium enterprises, and large corporate clients. The Wholesale segment includes product portfolio which covers voice, data, internet and infrastructure services such as carrier and roaming services, which are marketed to national and international telecom service providers as well as mobile virtual network operators. The Head Office segment comprises support units such as network, information technology, and operations, as well as staff functions like finance, human resources and strategy. The company was founded on January 13, 2015 and is headquartered in Zurich, Switzerland.

Sunrise Communications International SA operates as a holding company, with interest in the telecommunications sector. The company was founded on September 9, 2010 and is headquartered in Luxembourg.

Sunrise Communications Holdings SA provides telecommunication services. The firm also specializes in landline internet. The company was founded on September 9, 2010 and is headquartered in Luxembourg.

Mobile Challenger Intermediate Group SA provides telecommunication solutions. The company was founded on February 25, 2011 and is headquartered in Luxembourg.