How to make subdomains on a separate IP address?

Question

htaccess

I welcome everyone!
And so, I implemented auto-subdomains through the .htaccess file:

RewriteBase /
RewriteCond %{HTTP_HOST} !^www\.sitename\.ru$
RewriteCond %{HTTP_HOST} ^(.*)\.sitename\.ru$
RewriteRule ^(.*)$ http://sitename.ru/blog.php?user=%1 [L,P]

Everything works fine, but I need to bind a custom domain to this subdomain.
Those. so that the subdomain user1.sitename.ru opens on the purchased domain user1.ru
How can this be implemented? IP addresses, aliases - the same for the main domain and any of the subdomains

Answer 1

In order to display one site at another address, you need a proxy . Try to raise on your domain, for example, google.com.
The entire script is from a single php file , to which all requests must be redirected via .htaccess.