ioc.ac.ru is delegated to three nameservers, however one delegated nameserver is missing in the zone. Two of them are on the same IP network. Incoming mail for ioc.ac.ru is handled by one mailserver at ioc.ac.ru themselves. by, ac.ru, iis.ru, edu.ru, rfbr.ru and at least 34 other hosts share nameservers with this domain. ns1.ioc.ac.ru share mailservers with this domain. l2.ioc.ac.ru, ns2.ioc.ac.ru, hcc.ioc.ac.ru, glc.ioc.ac.ru, ns1.ioc.ac.ru and at least 100 other hosts are subdomains to this hostname. ac.ru is a domain controlled by five nameservers. All of them are on different IP networks.