Where can I find the addresses of all organizations working in a particular direction?

Question

Law in IT

Hello. Where can I go to find out the addresses of all organizations in the city that are engaged in a particular business?
I need to find the addresses of all real estate organizations in my city. How can I do that?
I took part from google, part from 2gis, but this is still not all organizations. Moving around the city, I find real estate offices, information about which is not present either in google or in 2gis. Surely there must be some kind of registry in which you can find out. Tell me where can I do it?

Answer 1

A strange question from a person involved in jurisprudence - do the terms OKPO, OKATO tell you anything? This will be the state register by type of activity.

Answer 2

The easiest way I see working with a program like focus contour.