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

Non-authoritative answer:
e.udacity.com	canonical name = custom-tracking.salesloft.com.
Name:	custom-tracking.salesloft.com
Address: 34.48.58.236