shell:$ nslookup -timeout=2 -retry=1 'speedtest2.opensignal.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
speedtest2.opensignal.com	canonical name = opensignalspeedtest.mdc.akamaized.net.
opensignalspeedtest.mdc.akamaized.net	canonical name = a859.g1.akamai.net.
Name:	a859.g1.akamai.net
Address: 23.223.17.166
Name:	a859.g1.akamai.net
Address: 23.223.17.172