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

Non-authoritative answer:
Name:	opentunnel.net
Address: 172.67.171.219
Name:	opentunnel.net
Address: 104.21.29.213
Name:	opentunnel.net
Address: 2606:4700:3037::ac43:abdb
Name:	opentunnel.net
Address: 2606:4700:3031::6815:1dd5