Lookup Company NAIC code or line of business by company name

msacs09

I'm trying to find relevant company's line of business or NAIC code. Idea is to perform a google search by company title and fetch the industry by parsing the search .. any ideas here please??

following is what i do manually and wanted to fetch these programatically
(1) search google by company name like "linkedin about IGOE AND COMPANY" or "linkedin about ruggeddepot"
(2) fetch relevant industry from here

What plugins/extension do we have to fetch these industry names programatically. I have around 1M distinct company names that I need to fetch their relevant industry names 

msacs09

Anyone please ?