shell:$ nslookup -timeout=2 -retry=1 'www.univ-chlef.dz'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
www.univ-chlef.dz	canonical name = web.univ-chlef.dz.
Name:	web.univ-chlef.dz
Address: 41.111.183.199