Use the database of traffic police to learn about the host machine in the room. Best contact to any of the traffic police with the request.
If the request is official, you can provide your personal data, the circumstances that forced you to apply, and the goal that you are pursuing.
Please note that the information the competent authorities are reluctant to share, so make queries with all the same power structures: through the Prosecutor's office, Ministry of interior, court.
If this option does not suit you, for whatever reason, try to use a base, laid out in free access on the Internet.
For example:
Please note that some databases contain the latest information, and some of them are paid.