shell:$ nslookup -timeout=2 -retry=1 'irb.cd'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	irb.cd
Address: 185.230.63.171
Name:	irb.cd
Address: 185.230.63.107
Name:	irb.cd
Address: 185.230.63.186