htaccess redirect to subdomain

Any ideas how to do that please?

Anyone please?
I think that would be a short htaccess code, but I have no knowledge in htaccess.

Thank you.

Any ideas?

Something here here might help:
https://www.google.com/search?q=htaccess+redirect

@mattmatt88 Try this in your .htaccess file:

RewriteEngine On
Options +FollowSymlinks
RewriteCond %{HTTP_HOST} ^(www\.)?mypage\.de$ [NC]
RewriteRule ^ https://de.mypage.com [R,L]

If you would like to change your WordPress URL from mypage.de to de.mypage.com you need to update the WordPress Address (URL) and the Site Address (URL) to https://mydomain.com/network from your Admin area-> Settings -> General Settings.

You may check this link for more details:
https://en.support.wordpress.com/changing-blog-address/

If you would like to create a redirection through your .htaccess file you may use the following .htaccess generator:

@davidp98: Thank you for your code but it just works for the main url not for all pages. Like “mypage.de/site2” should be moved to “de.mypage.com/site2”