.htaccess - redirect ID numbers to sub domain -

www.mydomain.com/1233.html This is the main topic of the website and I need to delete my script. And whoever will ever enter this link will be redirected to the following link

myprogram.mydomain.com/v2/1233.html

What is the procedure for doing this? Need setup and setup for the file below? .htaccess

The following should be placed in your document root. If you want to match it to www.example.com, for example delete the first line and example.com or myprogram.example.com.

  # RewriteCond% {HTTP_HOST} ^ Www \ .example \ .com $ RewriteRule ^ / (\ d + \ .html) $ http://myprogram.example.com/v2/$1 [L]