Site not opening

Hey I have been trying to open my site but it just won't, don't know if there is something wrong with it because it was working until now.
http://silveroaks.altervista.org

it says:

ERROR

The requested URL could not be retrieved

While trying to retrieve the URL: http://silveroaks.altervista.org/index.html

The following error was encountered:

Connection to 78.129.205.38 Failed
The system returned:

(110) Connection timed out
The remote host or network may be down. Please try the request again.

Your cache administrator is webmaster.
Generated Mon, 20 Oct 2014 16:08:53 GMT by localhost (Exinda)

Your website is online, please post the results of the tests you can find here: http://forum.en.altervista.org/issue...-problems.html, there seems to be an issue on the network you are connecting from.