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: 54.192.55.8
Name:	ec2-reachability.amazonaws.com
Address: 54.192.55.92
Name:	ec2-reachability.amazonaws.com
Address: 54.192.55.54
Name:	ec2-reachability.amazonaws.com
Address: 54.192.55.26
Name:	ec2-reachability.amazonaws.com
Address: 2600:9000:200e:ca00:17:251a:5940:93a1
Name:	ec2-reachability.amazonaws.com
Address: 2600:9000:200e:2000:17:251a:5940:93a1
Name:	ec2-reachability.amazonaws.com
Address: 2600:9000:200e:da00:17:251a:5940:93a1
Name:	ec2-reachability.amazonaws.com
Address: 2600:9000:200e:fe00:17:251a:5940:93a1
Name:	ec2-reachability.amazonaws.com
Address: 2600:9000:200e:8c00:17:251a:5940:93a1
Name:	ec2-reachability.amazonaws.com
Address: 2600:9000:200e:ea00:17:251a:5940:93a1
Name:	ec2-reachability.amazonaws.com
Address: 2600:9000:200e:2a00:17:251a:5940:93a1
Name:	ec2-reachability.amazonaws.com
Address: 2600:9000:200e:5000:17:251a:5940:93a1