WP GEO Website Protection is the security plugin to limit access from unwanted counties or IP addresses. The plugin allows you to restrict access to the content of your website. You can enable or disable visitors from certain countries (parts of) the content. For example, your website's content is intended for a specific range of visitors, limited to certain countries so you can customize it. Or if you want to block access from the countries or IP addresses, which are characterized by hack attempts, spamming of your comments and so on, you can do it in a one click.

Demo: https://www.siteguarding.com/en/wordpress-geo-website-protection