Dennis is also a member of the Supervisory Board at [[DENIC]]<ref>[https://www.denic.de/en/whats-new/press-releases/article/changes-to-the-supervisory-and-executive-boards/ DENIC Press Release 28.04.2016]</ref>. | Dennis is also a member of the Supervisory Board at [[DENIC]]<ref>[https://www.denic.de/en/whats-new/press-releases/article/changes-to-the-supervisory-and-executive-boards/ DENIC Press Release 28.04.2016]</ref>. |