$ ping -c1 -p 00bfd05c47e10b6ca55e0098563ae400 unhack.ca
 
$ curl http://unhack.ca/p/bfd05c47e10b6ca55e0098563ae4
 
$ dig bfd05c47e10b6ca55e0098563ae4 @unhack.ca
 
$ dig bfd05c47e10b6ca55e0098563ae4.ns.unhack.ca
 
C:\> nslookup bfd05c47e10b6ca55e0098563ae4 unhack.ca
 
C:\> type \\unhack.ca\bfd05c47e10b6ca55e0098563ae4\f.txt
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/bfd05c47e10b6ca55e0098563ae4">]>
    <foo>&xxe;</foo>
 
Waiting for ping...