shell:$ nslookup -timeout=2 -retry=1 'ec2-54-255-8-44.ap-southeast-1.compute.amazonaws.com' Server: 127.0.0.53 Address: 127.0.0.53#53 Non-authoritative answer: Name: ec2-54-255-8-44.ap-southeast-1.compute.amazonaws.com Address: 54.255.8.44