shell:$ nslookup -timeout=2 -retry=1 'server-18-161-49-49.cgk50.r.cloudfront.net' Server: 127.0.0.53 Address: 127.0.0.53#53 Non-authoritative answer: Name: server-18-161-49-49.cgk50.r.cloudfront.net Address: 18.161.49.49