A couple of years ago googling such numbers and blocking them was quite a sufficient solution. But now the number of calls is way above all the prudent limits. Now I use this service to find out whose number? https://shoustar.com/phones/ Helps me a lot now. Over a couple of months since I started using it and blocking the numbers. The spam calls decreased greatly
Great great. The service looks interesting. I've looked for the numbers in search engines and seen this website. I guess I will search for it there directly there