alex:www ~$ nslookup 213.85.11.2
Server:         212.13.119.161
Address:        212.13.119.161#53

2.11.85.213.in-addr.arpa        name = mail.businessgrad.ru.

alex:www ~$ nslookup mail.reutman.ru 212.13.119.161
Server:         212.13.119.161
Address:        212.13.119.161#53

Non-authoritative answer:
Name:   mail.reutman.ru
Address: 213.85.11.2