How to verify bicycle by frame serial number I have a problem to verify the model of the bicycle.

I have frame number - A4D58277 but can't check anywhere in Google, by which company was made.
Basically, the answer to the title question is "You can't." There's no global database and each manufacturer just uses whatever scheme they want. Unless you've already narrowed it down to a couple of candidate manufacturers, the serial number won't help you.