.htaccess – Blocking sites by URL

Last week I found the need to block incoming traffic from a particular site. While the author was kind enough to remove the links to my page when I first discovered the issue I was quick to block the traffic just to be safe.

The following code can be placed in your .htaccess file to block incoming traffic by URL.

RewriteEngine on
# Options +FollowSymlinks
RewriteCond %{HTTP_REFERER} FirstSite\.com [NC,OR]
RewriteCond %{HTTP_REFERER} SecondSite\.co\.uk
RewriteRule .* - [F]


The code above blocks traffic from two separate URLs. [NC, OR] should follow every line after the first but excluding the last in order to block more than one site.