shell:$ nslookup -timeout=2 -retry=1 'server-18-239-50-87.ams58.r.cloudfront.net'
Server:		1.1.1.1
Address:	1.1.1.1#53

Non-authoritative answer:
Name:	server-18-239-50-87.ams58.r.cloudfront.net
Address: 18.239.50.87