You can allow or prevent some IP addresses or even whole countries from accessing your website by using one of the following methods:
Via IP Manager
Adding some lines of code on your .htaccess file
How to Manage Access With the IP Manager
Go to Websites → Manage, search for IP Manager on the sidebar and click on it:
There, you will be able to find two options - add IPs to allow and block access to your website:
Just add an IP you wish to create rules for, leave a note (optional), and click on Add. The list of all the rules is available below:
With the IP Manager, you can set rules for specific IP addresses. If you want to set rules for a range of IP addresses, you can do it via .htaccess.