Rated 5 out of 5 stars

Best addon to ban range of sites with subdomains, even entire upper domain
My example of contentblock-regex.txt:

^https?:\/\/(.+?\.)?(\w{2,60}\.)+(ru|su|рф)
^https?:\/\/(.+?\.)?vk\.com

This review is for a previous version of the add-on (3.1.0).  This user has a previous review of this add-on.