shell:$ nslookup -timeout=2 -retry=1 'cdn-4.convertexperiments.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
cdn-4.convertexperiments.com	canonical name = cdn-4.convertexperiments.com.edgekey.net.
cdn-4.convertexperiments.com.edgekey.net	canonical name = e5289.dscb.akamaiedge.net.
Name:	e5289.dscb.akamaiedge.net
Address: 23.218.4.253
Name:	e5289.dscb.akamaiedge.net
Address: 2600:1405:d400:282::14a9
Name:	e5289.dscb.akamaiedge.net
Address: 2600:1405:d400:285::14a9