IP blacklists define list of IP's for which access to the application is restricted.
If a tracking link is accessed from a blacklisted IP, it will result into an invalid click.
If any other location is accessed from a blacklisted IP, it will result into a bad request.
IP's can be added manually by user or automatically by the script if a defined threshold is reached during click registration process. To enable IP threshold click on "settings" button located in the top-right corner.
Next you can set maximum number of clicks allowed in a 24 hour interval. If number of clicks coming from same IP is reached in this interval, it is automatically blacklisted. To disabled threshold set 0 (zero) or empty value into the threshold field.