LionScripts IP Blocker Pro is built by WordPress Perfectionists and works absolutely fine, just like the other reputed plugins does.
There are all kind of settings available in IP Blocker Pro which which you to accomplish all your requirements. If you want to exclude any IPV4 or IPV6 IPs then just exclude them. Yuo can also enable the Auto-IP Blocking Feature which automatically blocks the suspicious users based on your set criteria (e.g. Number of visits in a specific time).
You can read more details at the IP Blocker Page - http://www.lionscripts.com/product/wordpress-ip-address-blocker-pro/