htaccess http to http www

Options +FollowSymLinks
RewriteEngine on
RewriteCond %{HTTP_HOST} ^arpan.com [NC]
RewriteRule ^(.*)$ http://www.arpan.com/$1 [L,R=301]

---------------------------------------------------------------------

/****************** Start - redirecting index.php to root /*****************************

RewriteCond %{THE_REQUEST} ^.*/index.php
RewriteRule ^(.*)index.php$ http://www.arpan.com/$1 [R=301,L]


/****************** End - redirecting index.php to root /*****************************