An early “mass university”

The catchment area of the University of Vienna in the Middle Ages

The University of Vienna not only is one of the oldest north of the Alps and east of the Rhine, from the end of the 14th to the beginning of the 16th century it also had the highest number of students in this area.

Current university statistics reveal, among other things, the national or regional origin of their students, with an international composition being seen a sign for a high attraction and thus for high quality of the university.

How was this handled in the Middle Ages? Did the university even record the origin of their students? Are regional focuses noticeable and did these change over time?