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

Non-authoritative answer:
www.itu.int	canonical name = www46.site.itu.ch.
www46.site.itu.ch	canonical name = sdc.itu.ch.
Name:	sdc.itu.ch
Address: 156.106.253.250