Karsten Marquardsen

Dumrath & Fassnacht KG GmbH & Co. provides online marketing and advertising solutions. It publishes address and phone directory on its inline platform and social media sites. The company is headquartered in Hamburg, Germany.

Part of Heise Gruppe GmbH & Co. KG, Heise Media Service GmbH & Co. KG is a web design agency that has been creating professional websites for over 15 years. Based in Hannover, Germany, the company offers high-quality, mobile-optimized, and Google-optimized websites developed according to the latest technical standards. The German company also provides on-site web design services tailored to the specific needs and requirements of their clients. In addition, the company offers social media strategies and a free e-book for small and medium-sized enterprises on how to use social networks effectively. The CEOs of the company are Karsten Marquardsen and Ansgar Heise.