We all have users who log onto our website from different IPs. In certain cases, it makes sense to limit the number of IPs allowed per user. The Limit Max IPs Per User plugin lets you do just that. You will be able to set a max number of IPs allowed per user. There is also an option to set the # of days to keep logged IPs.
You will be able to see the number of IPs recorded per user and the last unique one. You can clear a user’s recorded IPs with the push of a button. When users hit their limit, they are shown an error message when trying to login.
This is a free plugin. You can try it here.