shell:$ nslookup -timeout=2 -retry=1 'proxy.trueinternet.co.th'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	proxy.trueinternet.co.th
Address: 203.144.144.146
Name:	proxy.trueinternet.co.th
Address: 2001:fb0:1061:420:203:144:144:146