Get company detail while fill GST number?

I want to know how we get company details after fill GST number in Laravel 9. For example, if someone fill GST number in input field so we need to get complete details of the company like business name, email, phone and etc.

For reference please follow the link given below

https://www.moglix.com/checkout

As given reference link when we checkout the products, we have to fill the address, in which when I click on Get GST invoice, then click on Billing Address, in which I have to fill GSTIN number, after filling GST number I get the details of the company.