Block all except one

Hi i need a littel help to make a script to block all country ips except one country ips for each ip i have on my routerboard

how can i do this?

Hi.

I recomend you to use a address-list with the IP of the contry you wan to permit and then block everything else.

This page would help you https://www.countryipblocks.net/country_selection.php