shell:$ nslookup -timeout=2 -retry=1 'ipv6-api.speedtest.net'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	ipv6-api.speedtest.net
Address: 2a04:4e42:400::731
Name:	ipv6-api.speedtest.net
Address: 2a04:4e42:200::731
Name:	ipv6-api.speedtest.net
Address: 2a04:4e42::731
Name:	ipv6-api.speedtest.net
Address: 2a04:4e42:600::731