Request: IP address based automatic login instead of username / password

Hi, I am building up a blog. I want to put subscription for my blog for users who want to access premium features on my blog. What I want to do is to give something like an educational license or school bundle to schools and universities. All students who are accessing my website using the university’s IP address should be able to access the premium features without need to login by username and password (Automatic login). I want to have control over subscribed/non-subscribed IP addresses from the admin Dashboard. Sounds like a plug-in to me. I looked into the plug-ins section using several tags but most IP address plug-ins were designed to block users from certain users and not do the functionality I need.

Can someone help with this please?