[mirror names]
au = Australia (AARNET)
-de-m = Germany (Ludwig-Maximilians-Universität, München)
+de-m = Germany (G-Node, LMU Munich)
de-md = Germany (University of Magdeburg)
de-v = Germany (Nikolaus Valentin Haenel, Vogtland)
gr = Greece (Aristotle University of Thessaloniki)