shell:$ nslookup -timeout=2 -retry=1 'img.email.cashback.opera.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
img.email.cashback.opera.com	canonical name = img.mailin.fr.
Name:	img.mailin.fr
Address: 104.17.156.243
Name:	img.mailin.fr
Address: 104.17.155.243
Name:	img.mailin.fr
Address: 104.17.158.243
Name:	img.mailin.fr
Address: 104.17.159.243
Name:	img.mailin.fr
Address: 104.17.157.243