What is the problem, why the site is not accessible via http?

Question

Domain Name System

Guys, tell me what the problem is, why the site is available only if a subdomain is specified, that is, the site is not available at http\://example.ru , but there is access to sub.\example.ru . DNS addresses indicated, aliases too, which is not so. I use a local openserver, I think the problem may be somewhere in the host settings

Answer 1

You need a "white" (public, that is, static, moreover) IP address, or forwarding port 80 on some router with a public address. Otherwise, the site will be available only on the local network.

Answer 2

you are seriously configured to reach from the outside on the 80th port of house IP?