How to set up a router to access Netflix, Hulu and more?

Question

Domain Name System

At one time, I remember how I set up an Asus router in such a way that when accessing netflix.com, hulu.com and others, the connection went through tunlr / unotelli or some other DNS, and when accessing other resources, everything worked as usual and without speed drop. I did this for a long time and, to be honest, I did not go deep into the issue. Yesterday I bought a new router (Zyxel Keenetic Ultra), so far it has not been possible to set it up, I need help.
Or perhaps there is another way?