C4.cz is tracked by us since April, 2011. Over the time it has been ranked as high as 81 299 in the world, while most of its traffic comes from Czech Republic, where it reached as high as 1 080 position. It was owned by several entities, from Jan Chyský nsset: NSS:CWEB:1 to Jan Chyský of ČESKÝ WEBHOSTING s.r.o., it was hosted by CESKY WEBHOSTING s.r.o, CESKY WEBHOSTING s.r.o. and others. While REG-GENREG was its first registrar, now it is moved to CZ-NIC.

C4 has a high Google pagerank and bad results in terms of Yandex topical citation index. We found that C4.cz is poorly ‘socialized’ in respect to any social network. According to Google safe browsing analytics, C4.cz is quite a safe domain with no visitor reviews.