shell:$ nslookup -timeout=2 -retry=1 'www.usthb.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.usthb.dz	canonical name = portail2023.usthb.dz.
Name:	portail2023.usthb.dz
Address: 41.106.128.70