Blocking users with specific IP addresses from accessing your site using the .htaccess editor

Block users from specific IP addresses or a range of IP addresses from accessing your site

1. Log into the .htaccess Editor, and then click Block IP Addresses.
2. Select the directory from which you want to block access. The current settings for the selected directory display in the Current Settings section.
3. To add a new IP address or range, enter it in the designated field.
4. Click Save to save your settings. Optionally, click Reset to clear the field.
5. To delete an IP entry, click the delete icon in the Blocked IP Addresses/Ranges table.

To block an IP range, enter the first IP address in the range followed by a forward slash and a Classless inter-domain routing (CIDR) suffix. E.g. 123.45.67.0/30
Be careful of performing range blocks because you may end up blocking people who are not the problem. 

Important: All subdirectories of the selected directory will inherit the settings for the directory unless you apply different settings to specific subdirectories.