shell:$ nslookup -timeout=2 -retry=1 'secure.cdn.fastclick.net'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
secure.cdn.fastclick.net	canonical name = secure2.cdn.fastclick.net.edgekey.net.
secure2.cdn.fastclick.net.edgekey.net	canonical name = e4536.g.akamaiedge.net.
Name:	e4536.g.akamaiedge.net
Address: 23.204.205.209