See: http://evuln.com/labs/test.bishenke.com/
This question in the light of this query: http://www.urlvoid.com/scan/bishenke.com/
I get a HTTP/1.1 400 Bad Request see: http://myip.ms/info/whois/50.115.138.242
Content-Type: text/html
Date: Sun, 24 Mar 2013 13:06:56 GMT
Connection: close
Content-Length: 39
Bad Request (Invalid Hostname)
polonus