shell:$ nslookup -timeout=2 -retry=1 'js.createsend1.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
js.createsend1.com	canonical name = d33w6v2v5ta015.cloudfront.net.
Name:	d33w6v2v5ta015.cloudfront.net
Address: 18.160.213.79
Name:	d33w6v2v5ta015.cloudfront.net
Address: 18.160.213.55
Name:	d33w6v2v5ta015.cloudfront.net
Address: 18.160.213.20
Name:	d33w6v2v5ta015.cloudfront.net
Address: 18.160.213.127