RewriteEngine On

 RewriteCond %{REQUEST_METHOD} ^TRACE

 RewriteRule .* - [F]

 RewriteCond %{http_host} ^XXX.com [NC]
RewriteRule ^(.*)$ http://www.XXX.com/$1 [L,R=301]
Order Allow,Deny
 Allow from all
 Deny from XX.XX.XX.XX
 ErrorDocument 404 /404