modifying .htaccess file to block social spamming

My question is where exactly to add code to my .htaccess file. I learned with 301 redirects and my hosting server, that the modification had to be placed above the standard WordPress Rewrite code as this example:

RewriteCond %{HTTP_HOST} ^XXXX\.com$ [OR]
RewriteCond %{HTTP_HOST} ^www\.XXXX\.com$
RewriteRule ^landscape\-design\/$ "http\:\/\/XXXX\.com\/residential\/res\-landscape\-design\/" [R=301,L]

RewriteCond %{HTTP_HOST} ^XXXXX\.com$ [OR]
RewriteCond %{HTTP_HOST} ^www\.XXXX\.com$
RewriteRule ^residential\-portfolio\/$ "http\:\/\/XXXX.com\/portfolio\/photo\-gallery\/" [R=301,L]

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress

SO, my question is where exactly in the above code would I place the code below? My inclination is to insert right above the </IfModule> closing tag.

I want to add the following to my .htaccess file on each of my client websites:

## STOP REFERRER SPAM ##
RewriteCond %{HTTP_REFERER} ^([^.]+.)*?anticrawler\.org [NC,OR]
RewriteCond %{HTTP_REFERER} ^([^.]+.)*?bestwebsitesawards\.com [NC,OR]
RewriteCond %{HTTP_REFERER} ^([^.]+.)*?blackhatworth\.com [NC,OR]
RewriteCond %{HTTP_REFERER} ^([^.]+.)*?buttons-for-website\.com [NC,OR]
RewriteCond %{HTTP_REFERER} ^([^.]+.)*?econom\.co [NC,OR]
RewriteCond %{HTTP_REFERER} ^([^.]+.)*?darodar\.com [NC,OR]
RewriteCond %{HTTP_REFERER} ^([^.]+.)*?hulfingtonpost\.com [NC,OR]
RewriteCond %{HTTP_REFERER} ^([^.]+.)*?humanorightswatch\.org [NC,OR]
RewriteCond %{HTTP_REFERER} ^([^.]+.)*?ilovevitaly\.com [NC,OR]
RewriteCond %{HTTP_REFERER} ^([^.]+.)*?7makemoneyonline\.com [NC,OR]
RewriteCond %{HTTP_REFERER} ^([^.]+.)*?o-o-6-o-o\.com [NC,OR]
RewriteCond %{HTTP_REFERER} ^([^.]+.)*?priceg\.com [NC,OR]
RewriteCond %{HTTP_REFERER} ^([^.]+.)*?social-buttons\.com [NC,OR]
RewriteCond %{HTTP_REFERER} ^([^.]+.)*?semalt\.com [NC,OR]
RewriteCond %{HTTP_REFERER} ^([^.]+.)*?smailik\.org [NC,OR]
RewriteCond %{HTTP_REFERER} ^([^.]+.)*?simple-share-buttons\.com [NC]
RewriteRule .* – [F]
## STOP REFERRER SPAM ##

Thank you for your help

Ben