Even if i add my IP still it informs me that my website is closed (even tho my ip add is appropriate!)

Anybody any ideas what ive done wrong? Thanks

RewriteEngine On
RewriteBase /
RewriteCond %{REMOTE_ADDR} !^82\.28\.***\.***$ 
RewriteCond %{REQUEST_URI} !^/maintenance/index\.php$
RewriteRule ^(.*)$ /maintenance/index.php [L]

You most likely would like your RewriteCond to check on from this regex rather:

RewriteCond %{REMOTE_ADDR} !^82\.28\.[0-9]+\.[0-9]+$