This is useful for SEO so all your ranking gets added to one url and not divided between two. Use the following example to create a redirect from your root domain to your www sub-domain: RewriteCond %{HTTP_HOST} ^mycurrentdomain.com [NC] RewriteRule ^(.*)?$ http://www.mycurrentdomain.com/$1 [R=301,L] To use this method you need have mod_rewrite installed and enabled on [...]