Website operator:
Definetz e.V.
Friedrich-Ebert-Straße 75
59425 Unna
Germany

Contact information:
Phone: Phone: 0 23 03 - 92 91 006
E-mail: post@definetz.com
Website: www.definetz.org

Authorised representative:
Dr Christian Fastenrath (Chairman),
Friedrich Nölle (Chairman),
Dirk Wilke (Treasurer),
Thorsten Würz (Secretary)

Company registration:
Register court: Hamm 
Commercial register number: VR 1913
Sales tax ID according to § 27a UStG: DE124652049

Last updated:
18.10.2025