shell:$ nslookup -timeout=2 -retry=1 'ec2-3-1-196-64.ap-southeast-1.compute.amazonaws.com' Server: 75.98.161.224 Address: 75.98.161.224#53 Non-authoritative answer: Name: ec2-3-1-196-64.ap-southeast-1.compute.amazonaws.com Address: 3.1.196.64