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How to change the DNS settings on a Asus RT-N12B1 router

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Setup Router Staff
(Last Updated: ) | Reading Time: 4 minutes

This page shows how to change the DNS settings on the Asus RT-N12B1 router.

Other Asus RT-N12B1 Guides

This is the dns guide for the Asus RT-N12B1. We also have the following guides for the same router:

What is the DNS setting on a Router

When you connect a router to the Internet it gets a few settings from your ISP automatically. One of the settings that the ISP sets in your router is the DNS setting. DNS stands for Domain Name System and it is used to convert Internet names into actual IP addresses. For instance, when you go to "google.com", your are really connecting to an IP address that is mapped through DNS to a number such as:

  • 173.194.33.73

This mapping happens automatically every time you visit any page on the Internet.

Why Change Your Router's DNS Setting

Some ISPs choose to abuse the DNS system and map unknown names to servers that they control. This can be done in a way that you don't know it is happening since your router is getting its DNS settings from your ISP. For instance, if you have one of these ISPs who is hijacking your DNS, and you try to surf the web to "some-random-site.com" and "some-random-site.com" does not exist, you might get a page back from your ISP with local advertisements on it.

By changing your DNS setting in your router you will effectively change the DNS setting for every computer on your network. This is because when a device is connected to your network your router automatically hands out its own DNS settings to that device. This way you can protect your entire network from ISP hijacking with just one setting.

What Should I Change My DNS To

There are 2 really great DNS servers on the Internet that you can choose from right now: Google Public DNS and OpenDNS. If you are not sure which one to pick then just use Google Public DNS.

When you change the DNS settings in your router, you usually have to enter a Primary and a Secondary setting. The secondary is only used if the primary can not be located. Here are common settings:

If you want to use Google Public DNS, use the following settings:

  • Primary: 8.8.8.8
  • Secondary: 8.8.4.4

If you want to use OpenDNS, use the following settings:

  • 208.67.222.222
  • 208.67.220.220

Login To The Asus RT-N12B1

To get started configuring the Asus RT-N12B1 DNS page you need to login to your router. If you are already logged in you can skip this step.

To login to the Asus RT-N12B1, follow our Asus RT-N12B1 Login Guide.

Change the DNS settings on a Asus RT-N12B1

If you followed our login guide above then you should see this screen.

router status mac address internet IP
This is the status page from your Asus RT-N12B1 router.

You should see the Home page of the Asus RT-N12B1. Click the link on the left side of the page labeled Advanced Settings, and below that LAN.

You are taken to a new page where you need to click the tab at the top of the page labeled DHCP Server.

Configure the DNS section of your Asus RT-N12B1

router DHCP lan mac address binding internet settings
This is the dhcp page from your Asus RT-N12B1 router.

Scroll down this new page until you see the heading of DNS and WINS Server Setting.

Under this heading, place your cursor in the box labeled DNS Server and enter the primary address of the DNS server you have chosen for your network.

Click the Apply button at the bottom of the page.

You need to enter the DNS Server addresses one more place. To get there, click the choice on the left labeled WAN and make sure the tab Internet Connection is picked.

router wan setup
This is the wan page from your Asus RT-N12B1 router.

On this page, find the heading of WAN DNS Setting. Click the radio dot labeled No next to the question reading Connect to DNS Server automatically?.

Next is the DNS Server1 and DNS Server2. Enter the primary address in the box labeled DNS Server1 and the secondary address in the box titled DNS Server2.

Save your changes.

That's it, you did it!

Possible Problems when Changing your DNS settings

Most devices on your network will not begin using the new DNS settings until they have been rebooted. After rebooting a device you can go to it's network settings and verify that it is using the DNS servers that you specified.

Other Asus RT-N12B1 Info

Don't forget about our other Asus RT-N12B1 info that you might be interested in.

This is the dns guide for the Asus RT-N12B1. We also have the following guides for the same router: