How to make different redirects from index for subdomains?

Question

htaccess

Interested in how to make the correct redirect to all subdomains in the .htaccess file, now the following is written:

RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /index\.html\ HTTP/ 
RewriteRule ^index\.html$ http://site.ru/ [R=301,L]

RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /index\.php\ HTTP/ 
RewriteRule ^index\.php$ http://site.ru/ [R=301,L]

But if you go to the "moscow.site.ru/index.php" subdomain, it redirects to site.ru (yes, I understand what the rule is and is written in my .htaccess, but how can I correct it for subdomains?)

Answer 1

Implemented as follows

RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /index\.html\ HTTP/ 
RewriteRule ^index\.html$ %{HTTP_REFERER} [R=301,L]

RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /index\.php\ HTTP/ 
RewriteRule ^index\.php$ %{HTTP_REFERER} [R=301,L]