shell:$ nslookup -timeout=2 -retry=1 'udacity.com'
Server:		127.0.0.53
Address:	127.0.0.53#53

Non-authoritative answer:
Name:	udacity.com
Address: 18.238.80.111
Name:	udacity.com
Address: 18.238.80.107
Name:	udacity.com
Address: 18.238.80.36
Name:	udacity.com
Address: 18.238.80.21