666.cz is tracked by us since April, 2011. Over the time it has been ranked as high as 820 799 in the world. It was owned by several entities, from Martin Toman temp-c: PES to Roman Wytrzens of Metalshop.cz s.r.o., it was hosted by webhosting services, NETHOST s.r.o. and others. While REG-INTERNET-CZ was its first registrar, now it is moved to CZ-NIC.

666 has a decent Google pagerank and bad results in terms of Yandex topical citation index. We found that 666.cz is poorly ‘socialized’ in respect to any social network. According to MyWot, Siteadvisor and Google safe browsing analytics, 666.cz is a fully trustworthy domain with no visitor reviews.