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

Non-authoritative answer:
www.post.lu	canonical name = post.lu.
Name:	post.lu
Address: 78.141.185.153
Name:	post.lu
Address: 2001:7e8:8010:64::10