Does anyone have experience with using a script for pulling relevant contact info for reaching out to prospective businesses?

I am in the process of compiling lists of potential businesses to contact. These lists will not have contact info immediately available, so I would like to use an automated tool to try to obtain contact info for the business that I identify.

If anyone has created or used a useful tool, or even outsourced the creation of the tool, would love your input!

Thanks!