Order a Johannes Gutenberg-Universität Mainz diploma. How long to get a fake Johannes Gutenberg-Universität Mainz degree? Make a Johannes Gutenberg-Universität Mainz Urkunde. Buy a fake diploma online. The full name of the University of Mainz is Johannes Gutenberg-Universität Mainz, also known as the University of Mainz. It is located in Rhineland-Palatinate and is a member of the German U15 University Alliance, a key university alliance in Germany. The university was founded in 1477 and currently has more than 34,000 students. It has various departments such as law, economics, medicine, and philosophy, as well as the right to confer doctoral degrees.