I have a list of 300 domains. I want to find out which of them are banned on Google. How can I easily find out which ones would have Google penalties?
How to mass test a list of domains to find out if any of them banned by Google?
google;multiple domains;testing
Seeing if a domain name is penalized isn't an easy process.  Google is tight lipped about penalties; it only shares information about the penalty (or even the fact that there is a penalty) with a verified webmaster for that domain.The typical way to see if the domain has been penalized it to verify the domain in Google Webmaster Tools and look for messages from Google.  You would need to own the domain names and manually review them one at a time for this to work.There are some third party tools that will give you a great deal of information about domains.  While they won't tell you specifically if Google penalizes them, they will give you metrics that can help you decide whether or not Google is likely to penalize them.  One such tool is Moz's Open Site Explorer.  It won't let you do 300 easily, but you can do five at a time: