shell:$ nslookup -timeout=2 -retry=1 'www.digitalocean.vn'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
www.digitalocean.vn	canonical name = digitalocean.vn.
Name:	digitalocean.vn
Address: 45.119.84.172