When using the shared hosting service, you need to specify our NS servers:
ns1.tuthost.com ns2.tuthost.com ns3.tuthost.com ns4.tuthost.com
If the domain is registered with us, then make these changes you can in the personal office, section “Products / Services” -> “Domains” then select the domain for which you want to make changes and on top there will be a button “NS”.
If the domain is not registered with us, you need to make these changes at your registrar.
When using the VPS service, you can set up your own NS servers on the server and still manage the records yourself. To do this, you only need to specify your own NS servers for the domain.
If you use our DNS hosting service, you need to specify the following NS servers for the domain:
More about the service: https://tuthost.ua/domens/dns/