Where can I find the IMEI base?

Question

Data request

Where can I find the IMEI base or the API with the base? of course free. (it's hard to believe, but suddenly someone knows)
You just need to check the IMEI entered on the website and display the name of the phone ...
I found a lot of all kinds of paid analogues, but where do they get this entire database from? maybe they all have almost the same pages on the site with brands and phones, like a carbon copy ...
It used to be imei.info, it was free once, but then I didn’t need it, but now I can’t find it.
In short, I will be glad for any information)) I
also found the GSMA website, but there you need to submit some kind of application from the company and I did not find what exactly they provide and whether they even have an API.