shell:$ nslookup -timeout=2 -retry=1 'server-31853.prod.hosts.ooklaserver.net'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
server-31853.prod.hosts.ooklaserver.net	canonical name = speedtest3.djezzy.dz.
Name:	speedtest3.djezzy.dz
Address: 129.45.0.71