Something
public text v1 · immutablealex: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