ndm.cz is a domain controlled by two nameservers at nextra.cz. They are on the same IP network. Incoming mail for ndm.cz is handled by two mailservers at ndm.cz themselves having a total of three IP numbers. All of them are on the same IP network. t.cz, vf.sk, vf.cz, ti.cz, ica.cz and at least 100 other hosts share nameservers with this domain. vf.sk, vf.cz, bec.cz, vkk.cz, cdl.cz and at least 100 other hosts share mailservers with this domain. mail.ndm.cz and vstupenky.ndm.cz are subdomains to this hostname.