shell:$ nslookup -timeout=2 -retry=1 'opensignal.openvpn.com'
Server: 127.0.0.53
Address: 127.0.0.53#53
Non-authoritative answer:
Name: opensignal.openvpn.com
Address: 104.18.20.80
Name: opensignal.openvpn.com
Address: 104.18.21.80
Name: opensignal.openvpn.com
Address: 2606:4700::6812:1550
Name: opensignal.openvpn.com
Address: 2606:4700::6812:1450
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