I have detected that a range of IP addresses may be used in a malicious way and I don't know how to block it.
I would like to block the range 66.249.74.* from accessing my website by using the .htaccess file.
You could use:
Order Allow,Deny
Deny from 66.249.74.0/24
Allow from all
Or you could use this:
RewriteEngine on
RewriteCond %{REMOTE_ADDR} ^66\.249\.74\.
RewriteRule ^ - [F]