Since the website uses www.cnop.net as its domain, we want to redirect all cnop.net traffic to www.cnop.net. Following Google’s recommendation, we will use a server-side 301 redirect, the best method to ensure both users and search engines are directed to the correct page. A 301 status code indicates that a webpage has been permanently moved to a new location.
Below we’ll cover two methods to implement a 301 permanent redirect in Apache, which require access to the server’s .htaccess file.
The code is as follows; simply upload it to the website root directory:

RewriteEngine on
RewriteCond %{HTTP_HOST} ^cnop.net$
RewriteRule ^(.*)$ http://www.cnop.net/$1 [R=301,L]
Attachment https://www.cnop.net/uploadfile/2016/0107/20160107035942986.zip