shell:$ nslookup -timeout=2 -retry=1 'www.ok.ru'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	www.ok.ru
Address: 217.20.147.1
Name:	www.ok.ru
Address: 5.61.23.11
Name:	www.ok.ru
Address: 217.20.155.13