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DNS - What is this technology and why we need it

Domain Name System (DNS) is an Internet technology for recognizing the IP addresses of websites by their name. Its operation is based on the principle of matching, when you enter the name of any website in the address bar, the web browser contacts the DNS server, which matches this name with the IP address in its database and creates a connection to the requested page.

Best DNS for Web Surfing

Most Internet service providers create their own DNS servers, but unfortunately, it is not always possible to find the required name / IP address match in their databases. In such cases, the request is redirected to root DNS servers with larger databases, which in turn slows down the connection speed and takes longer to access the desired site. Therefore, power users use DNS servers from web giants such as Google Corporation. Using DNS or you will get faster access to sites than with the provided servers of your provider.

The purpose of DNS on a router

If your device is configured to automatically obtain an IP address and DNS server, then when connecting to a router to access the Internet, you will use the router's DNS. Therefore, changing the DNS server on the router not only increases the connection speed but also saves time that would have to be spent changing the DNS settings on each device in your network separately. We will describe further how to perform a quick DNS change on a router using popular devices as an example.

Asus RT-AC51

Changing the DNS server on this device is very easy and simple.

  1. We connect to the settings of the router through a web browser. To do this, write your choice of or router.asus.com in the address bar and press Enter.


  2. Go through the authorization procedure for this you need to enter a username and password, by default they have the values "admin" and "admin".
  3. Go to "Advanced settings" and select the menu item "Local network".


  4. Click the DHCP Server tab.


  5. Scroll down to the “DNS and WINS Server Setting” section and in the “DNS Server” field, enter the IP address of the new DNS, then save your changes by clicking the “Apply” button.


D-Link DIR 825

It will not be difficult to change DNS to faster ones on this router, just do the following.

  1. Go to the router, for this, in the address bar of any browser, write the following request or, depending on the device settings. You will see an authorization window in which you need to enter your login and password for access (by default admin and admin).
  2. Scroll the main menu to advanced settings, open them and select the "DNS" sub-item.


  3. The firmware allows you to configure separate DNS servers for IPv4 and separately for IPv6. Activate the settings for using your own DNS by clicking on the switch, write the IP addresses in the appropriate fields, and save the changes by clicking on the "Apply" button.


Tenda AC6

If the DNS servers provided by your provider do not suit you, you can change them in the following way.

  1. Launch a web browser and write a request for in the address bar. After opening the authorization window, enter your username and password, by default they have the value admin.
  2. In the main menu on the left, select "Internet Settings".


  3. In the right part of the window, opposite the Primary DNS server and Secondary DNS server values, write down their new IP addresses. To complete the settings, click on the "Connect" button and restart the router.


Before changing DNS servers, you must be sure that their quality is better than the ones you are currently using. Be very careful when you are going to use DNS IP addresses. Modern routers allow, in addition to making changes manually, choosing to use one of the many DNS services with access to root databases, this option can also significantly increase the speed of connection to landing pages, in addition, it allows you to try several options without unnecessary effort.