How to find site subdomains?

Question

PHP

How to find subdomains on a site if there is only one domain? It is very necessary to find out all the "live" subdomains of the domain.

I thought that using htaccess you can make a redirect to a php file that would write subdomains to the list. It seems that somewhere I saw such a script, but I can not find it in any way. Please help!

Answer 1

How to check if a site has subdomains?

Answer 2

As an option, but not exactly) parsi search engine on requestsite:*.site.ru