$ ping -c1 -p 00e397f487333b8b0e598677471a0a00 unhack.ca
 
$ curl http://unhack.ca/p/e397f487333b8b0e598677471a0a
 
$ dig e397f487333b8b0e598677471a0a @unhack.ca
 
$ dig e397f487333b8b0e598677471a0a.ns.unhack.ca
 
C:\> nslookup e397f487333b8b0e598677471a0a unhack.ca
 
C:\> type \\unhack.ca\e397f487333b8b0e598677471a0a\f.txt
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/e397f487333b8b0e598677471a0a">]>
    <foo>&xxe;</foo>
 
Waiting for ping...