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Where is the router DNS modified?
When the router dials up, it will generate a DNS by default. This DNS is usually the local DNS. Normally, there is no problem, so many people may ignore the settings here. 
As shown in the above figure, you can manually set the DNS server in "Network Parameters" - "WAN Settings", "Advanced Settings". We only need to check the option of “Manually set DNS serverâ€, then fill in the DNS IP in the following DNS server, and save it. The operation is very simple.
How to find the fastest DNS?
Changing a DNS server helps the router. So how do you find the fastest DNS?
Here you can try Gibson Research DNS toolbar, this tool can display real-time DNS server with your host's fastest response. You enter the router, you can enter the best DNS server address given by the toolbar, so that the connection speed will be greatly improved. 
After the Internet speed is faster, whether it is using smart TV episodes or the experience of mobile Internet access will rise a lot, and smart TVs will also be able to more smoothly watch a variety of blockbuster movies at home. 
The sofa butler client also has quick tools to modify the DNS, and the method is much simpler.
Open the "toolbox" of the sofa butler client, you can see the "DNS optimization" option. 
Click to enter the system will be assigned to you more appropriate DNS optimization program, no extra operation, a key to complete. 
Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, TV boxes, smart TVs, smart TV software, etc. Answering questions.
How to find the fastest DNS? Learn these two moves to double your internet speed
The impact of routers on network speed is great. A good router will perform better in terms of speed and stability. Although there are many tutorials on the Internet to modify the DNS, but you know that to modify the DNS, which DNS is best for your router? Follow the small series of tutorials to see it ~