I need to get all subdomains of a specific website (100k+).
Simple solutions DO NOT work. You'll have to use Google + Proxies + Words List to get all the subdomains:
e.g of Google Search:
"site:xxxx.com car" -> Get all the results
"site:xxxx.com house" -> Get all the results
If you run several thousands words, you'll get all the results.
Easy part: Once you get all the subdomains, make a call to Linkedin and get company info (subdomain = company name).
This is the first step of a big project that will need a part-time/full-time project manager SOON!