1.11.22. - This is subnet 10.231.22.0/255.255.255.0
188.8.131.52 - unique IP Address
Block Unwanted Visitors with .htaccess using password
/path/to/htpasswd/file/ has to be a valid path to your .htpasswd file. Use a password encryption program to create your passwords. Paste the lines into your .htpasswd file and save the file. You will have one line for every username that requires access.
Change "Name of Area" to the name of the site section being protected.