נסה את זה:
קוד:
RewriteEngine On
RewriteCond %{HTTP_HOST} (www\.|[^(.*)]){1}domain.com [NC]
RewriteRule .* - [L]
RewriteCond %{HTTP_HOST} ^([^.]+)\.doamin.com [NC]
RewriteRule .* /path/to/doamin/webroot/%1/index.html [L]
RewriteCond %{HTTP_HOST} ^([^.]+)\.([^.]+)\.doamin.com [NC]
RewriteRule .* /path/to/doamin/webroot/%2/%1.html [L]