DNS Roaming is one free λογισμικό αλλαγής DNS ανοιχτού κώδικα για τα Windows για αυτόματη εναλλαγή DNS βάσει κανόνων. Η application it can change DNS when the network adapter changes, the network name and when you are given a specific IP range.
It runs in the background and waits for the network or IP to change to apply the rules. It supports popular secure DNS servers such as Cloudflare DNS, Google, Quad9, etc. But you can also add your own custom DNS server.
You can set multiple DNS switching rules and they will work accordingly. It runs as a Windows service and offers a simple user interface (UI) through it system tray to change the settings.
It even creates log files for DNS client or service changes. You can check the logs at any time and find out which DNS server was running at a particular time.
You can download it software from here. Install and then you will find its icon in the system tray. With a right click on it you will see all the available options.