How to weed out traffic from subdomains?

Question

Google Analytics

There is a site with the address site.ru, how to weed out traffic from subdomains like user1.site.ru user2.site.ru, etc.?
By the name of the subdomain, do not suggest that they are created for each user and the user himself sets the names of this subdomain.
I use GTM for tracking.

Answer 1

Well, according to the full match of the URL and do the filtering
Either "starts with" if there are internal pages