How to remove subdomain redirect to www?

Question

htaccess

There was a question, I made a subdomain on cloudflare, but it does not work due to the fact that it redirects to www. Already tried different options in .htaccess but nothing helps. Can you help me remove this redirect? At the moment, the folder with the subdomain is empty, there is only the .htaccess file

Answer 1

those. so that www.a.mysite.ru opens with a.mysite.ru ?

RewriteEngine On
RewriteCond %{HTTP_HOST} ^www\.(.*) [NC]
RewriteRule ^(.*)$ https://%1/$1 [R=301,L]

Answer 2

1. First you need to make sure that there is an A record www.a.site.ru
Otherwise, the redirect will not work.
Well, no one bothers you to clarify the condition

RewriteCond %{HTTP_HOST} ^www\.a\mysyte\.ru [NC]
RewriteRule ^(.*)$ https://mysyte.ru/$1 [R=301,L]