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

Non-authoritative answer:
www.clinicalkey.com	canonical name = www.clinicalkey.com.cdn.cloudflare.net.
Name:	www.clinicalkey.com.cdn.cloudflare.net
Address: 104.16.44.60
Name:	www.clinicalkey.com.cdn.cloudflare.net
Address: 104.16.43.60