shell:$ nslookup -timeout=2 -retry=1 'server-38812.prod.hosts.ooklaserver.net'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
server-38812.prod.hosts.ooklaserver.net	canonical name = speedtest.sudatel.sd.
Name:	speedtest.sudatel.sd
Address: 197.252.200.10