Ralph Dommermuth is a businessperson who founded United Internet AG and 1&1 IONOS SE and who has been the head of 6 different companies. He is Chief Executive Officer for United Internet AG and Chairman-Supervisory Board at Drillisch Netz AG and Chief Executive Officer at 1&1 Drillisch AG (both are subsidiaries of United Internet AG). In the past Mr. Dommermuth was Co-Managing Director at RD-II Projektentwicklungs GmbH & Co. KG, Chairman of United Internet Media AG, Chief Executive Officer of Drillisch AG and Member-Supervisory Board at 1&1 IONOS SE.

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