shell:$ nslookup -timeout=2 -retry=1 'a2.adform.net'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
a2.adform.net	canonical name = track-us.adformnet.akadns.net.
Name:	track-us.adformnet.akadns.net
Address: 185.167.164.52
Name:	track-us.adformnet.akadns.net
Address: 185.167.164.40