Osu.cz is tracked by us since April, 2011. Over the time it has been ranked as high as 56 143 in the world, while most of its traffic comes from Czech Republic, where it reached as high as 139 position. Portal.osu.cz receives about 43.04% of its total traffic. It was owned by several entities, from Ostravská univerzita v Ostravě temp-c: P_LOK to Ostravská univerzita of Ostravská univerzita, it was hosted by University of Ostrava. While REG-GENREG was its first registrar, now it is moved to CZ-NIC.

Portal.osu has a high Google pagerank and bad results in terms of Yandex topical citation index. We found that Portal.osu.cz is poorly ‘socialized’ in respect to any social network. According to MyWot and Google safe browsing analytics, Portal.osu.cz is quite a safe domain with no visitor reviews.