How to open one domain another?

Question

Domain name market

Hello, there is a 3rd level domain (site.site.ru) and 2 levels (site.ru).
How can I make it so that a 3-level domain opens, and there are 2 levels in the address bar.
You need it for free, without additional registrar services.
Can I change the domain of the record so that everything is as I need?
Or do you need to send the domain to the hosting and make a redirect from there?

Answer 1

Same hosting or different?
Do you have access to hosting settings?