shell:$ nslookup -timeout=2 -retry=1 'pages.coursera.org'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
pages.coursera.org	canonical name = coursera.mktoweb.com.
coursera.mktoweb.com	canonical name = ab23.mktossl.com.
Name:	ab23.mktossl.com
Address: 104.17.70.206
Name:	ab23.mktossl.com
Address: 104.17.74.206
Name:	ab23.mktossl.com
Address: 104.17.73.206
Name:	ab23.mktossl.com
Address: 104.17.71.206
Name:	ab23.mktossl.com
Address: 104.17.72.206