shell:$ nslookup -timeout=2 -retry=1 'online.lifelonglearning.jhu.edu'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
online.lifelonglearning.jhu.edu	canonical name = d1r8uvfrvo9h6y.cloudfront.net.
Name:	d1r8uvfrvo9h6y.cloudfront.net
Address: 3.160.5.123
Name:	d1r8uvfrvo9h6y.cloudfront.net
Address: 3.160.5.75
Name:	d1r8uvfrvo9h6y.cloudfront.net
Address: 3.160.5.98
Name:	d1r8uvfrvo9h6y.cloudfront.net
Address: 3.160.5.93