There are still sites you cannot reach without using www in domain name. That is DNS configuration problem, but what if you find that your site is indexed with 2 domain names – one withwww.yourpage.com
and yourpage.com. For search engines, these are two different sites with the same content.
Non WWW to WWW redirection
#Options +FollowSymlinks
RewriteEngine On
RewriteCond %{http_host} ^yoursite.com
RewriteRule ^(.*) http://www.yoursite.com/$1 [R=301,L]
If you have any problem please remove “#” from the first line.