shell:$ nslookup -timeout=2 -retry=1 'www.sitel.dz'
;; communications error to 75.98.161.224#53: timed out
Server:		69.39.86.5
Address:	69.39.86.5#53

Non-authoritative answer:
www.sitel.dz	canonical name = sitel.dz.
Name:	sitel.dz
Address: 197.140.11.222