cz ("404") is a domain controlled by six nameservers at ns.nic.cz. Two of them are on the same IP network. lrr.cz, nic.cz, tld.cz, cznic.eu, dnssec.cz and at least twelve other hosts share nameservers with this domain. 3g.cz, ji.cz, k2.cz, bk.cz, ti.cz and at least 100 other hosts are subdomains to this hostname.