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

Non-authoritative answer:
cdn.refersion.com	canonical name = d3ei4ipx30jdgx.cloudfront.net.
Name:	d3ei4ipx30jdgx.cloudfront.net
Address: 99.86.57.110
Name:	d3ei4ipx30jdgx.cloudfront.net
Address: 99.86.57.78
Name:	d3ei4ipx30jdgx.cloudfront.net
Address: 99.86.57.115
Name:	d3ei4ipx30jdgx.cloudfront.net
Address: 99.86.57.82