shell:$ nslookup -timeout=2 -retry=1 'sg-vpn.vpntunnel.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
sg-vpn.vpntunnel.com	canonical name = sg.vpntunnel.com.
Name:	sg.vpntunnel.com
Address: 82.102.25.236
Name:	sg.vpntunnel.com
Address: 2a0a:b640:1:b5::4