ns.adt.ru has one IP number , but the reverse is rotor.lamport.ru. php4.ru, ns.art.ru, dns1.com.ru, ns.aviacia.ru, ns.krutilka.ru and at least one other host point to the same IP. adt.ru, mch.ru, art.ru, tuda.ru, rsds.ru and at least 22 other hosts use this as a nameserver. adt.ru is a domain controlled by two nameservers at adt.ru themselves. They are on different IP networks. Incoming mail for adt.ru is handled by seven mailservers having a total of 28 IP numbers. Some of them are on the same IP network. adt.ru has one IP number. ns.adt.ru is hosted on a server in Russian Federation.