.exit is a top-level pseudo- domain used to indicate on the fly the preferred output node in the Tor network , without the need to edit the Tor configuration file (torrc).
The syntax of this domain is the domain name + output node + .exit, so if the user wants to access http://www.torproject.org/ through the tor26 node, he needs to enter the URL http: //www.torproject.org.tor26 .exit .
This domain is used in order to gain access to the site, which is accessible only to residents of certain regions, and / or in order to verify the functionality of the site.