How to make a domain without a domain zone?

Question

Domain Name System

Examples:
https://beans.agency/
https://whiterussian.studio/

Answer 1

agency and studio are the zones.

Answer 2

This is done easily. Download the web server. Look for the hosts file and add any domains to it. That's it, now you have your own, new (albeit not global) Internet (with a big stretch).
Those domain zones which you specified - exist. You may be surprised, but there are .xxx and .google and many others.
The list can be viewed here - List of top-level domains (you can also look at the English version)
Prices for such domains can be viewed, for example, on reg.ru

Answer 3

Install Openserver (or something else), sketch out a site and there will be a local domain without a zone!