301 redirect for all pages code example
Example 1: 301 redirect
301, "Moved Permanently"—recommended for SEO
302, "Found" or "Moved Temporarily"
Meta Refresh
Example 2: how to create a 301 redirect with domain.com
RewriteEngine On
RewriteCond %{HTTP_HOST} ^DOMAIN.com [NC]
RewriteCond %{SERVER_PORT} 80
RewriteRule ^(.*)$ https://www.DOMAIN.com/$1 [R=301,L]