shell:$ nslookup -timeout=2 -retry=1 'cdn1.smartadserver.com'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
cdn1.smartadserver.com	canonical name = cdn1.smartadserver.com.edgesuite.net.
cdn1.smartadserver.com.edgesuite.net	canonical name = a1993.dscb.akamai.net.
Name:	a1993.dscb.akamai.net
Address: 23.212.239.211
Name:	a1993.dscb.akamai.net
Address: 23.212.239.206
Name:	a1993.dscb.akamai.net
Address: 2600:1405:d400:b::17c7:36ad
Name:	a1993.dscb.akamai.net
Address: 2600:1405:d400:b::17c7:36a4