shell:$ nslookup -timeout=2 -retry=1 'fr.univ-batna2.dz'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
fr.univ-batna2.dz	canonical name = rproxy.univ-batna2.dz.
Name:	rproxy.univ-batna2.dz
Address: 41.111.218.138