shell:$ nslookup -timeout=2 -retry=1 'ec2-reachability.amazonaws.com'
Server:		75.98.161.224
Address:	75.98.161.224#53

Non-authoritative answer:
Name:	ec2-reachability.amazonaws.com
Address: 54.192.55.26
Name:	ec2-reachability.amazonaws.com
Address: 54.192.55.54
Name:	ec2-reachability.amazonaws.com
Address: 54.192.55.8
Name:	ec2-reachability.amazonaws.com
Address: 54.192.55.92
Name:	ec2-reachability.amazonaws.com
Address: 2600:9000:200e:e800:17:251a:5940:93a1
Name:	ec2-reachability.amazonaws.com
Address: 2600:9000:200e:6c00:17:251a:5940:93a1
Name:	ec2-reachability.amazonaws.com
Address: 2600:9000:200e:6600:17:251a:5940:93a1
Name:	ec2-reachability.amazonaws.com
Address: 2600:9000:200e:d400:17:251a:5940:93a1
Name:	ec2-reachability.amazonaws.com
Address: 2600:9000:200e:a400:17:251a:5940:93a1
Name:	ec2-reachability.amazonaws.com
Address: 2600:9000:200e:4c00:17:251a:5940:93a1
Name:	ec2-reachability.amazonaws.com
Address: 2600:9000:200e:9800:17:251a:5940:93a1
Name:	ec2-reachability.amazonaws.com
Address: 2600:9000:200e:6a00:17:251a:5940:93a1