It would be a great idea to add a dns server to next mikrotik version.
It would help a lot of people. With dns server some can make a smaller internet in his local or wan network.

DNS Server is already implemented.
In winbox look under: IP --> DNS

mean dns server.
that in winbox it is a dns server.
in 2.9.27version someone had created a package to run a dns server on mikrotik

Did you see what Letni told you? Other devices can use RouterOS as a DNS server. You can even create your own records and store them in ROS DNS cache

ok thanks my mistake..