Screenshot of the Asus router config web UI, showing a "Use Yandex.DNS" toggle switch. [EDIT: This screenshot is not from the actual router (AC1900 / RT-AC68U V3) but from the Yandex.DNS website.]
https://media.tilde.zone/system/media_attachments/files/111/290/262/397/492/256/original/0a02fc2d353eca28.png