shell:$ nslookup -timeout=2 -retry=1 'server-4501.prod.hosts.ooklaserver.net'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
server-4501.prod.hosts.ooklaserver.net	canonical name = speedtest-fez1.hostoweb.com.
Name:	speedtest-fez1.hostoweb.com
Address: 154.70.207.15
Name:	speedtest-fez1.hostoweb.com
Address: 2c0f:5400:2:2::1