Parsing. You need to create a database of URLs for a search query

It is necessary to create a database of addresses of companies in Russia, Belarus, Ukraine and Kazakhstan I td (by search query "enterprise" on Yandex)
Then you need to create a program that will collect all these necessary information (mail, phone, Skype companies, etc.)
The ultimate goal is to obtain a database of all enterprises in the territory of the post-Soviet countries. If there are other suggestions on how to do this, I look forward to your suggestions.
Also, tell a server to send emails (letters) so that you do not enter into spam.