Cases when it is necessary to find out the data of the owner of the car, a lot: got a boor on the road, or you got into a traffic accident, and the culprit escaped.
Most often at our disposal only the brand of the car, its color and registration number.
But this data is enough.
Use the database of the traffic police to find out about the owner of the car by number. It is best to contact directly to any of the traffic police officers with a request.
If the request is official, then indicate your personal data, the circumstances that forced you to apply, and the goal that you pursue.
Please note that the competent authorities share information with reluctance, so make inquiries with the help of the same power structures: through the prosecutor's office, the Ministry of Internal Affairs, the court.
If such an option does not suit you for some reason, then try using databases that are freely available on the Internet.
Note that some databases do not contain the most up-to-date information, and some of them are paid.