How to change the DNS settings on a Arris DG860A router

This page shows how to change the DNS settings on the Arris DG860A router.

Other Arris DG860A Guides

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 "", your are really connecting to an IP address that is mapped through DNS to a number such as:

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 "" and "" 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:

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

Login To The Arris DG860A

To get started configuring the Arris DG860A DNS page you need to login to your router. If you are already logged in you can skip this step.

To login to the Arris DG860A, follow our Arris DG860A Login Guide.

Change the DNS settings on a Arris DG860A

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

You should now be on this page of the Arris DG860A router. First you need to click the tab at the top of the page labeled LAN Setup. Then on the left of the page click the link LAN Settings.

Configure the DNS section of your Arris DG860A

On this page, scroll down and click the small box titled Enable DNS Override. This allows you to override the Internet Service Providers DNS server.

Under this is the Primary DNS Server IP. Enter the primary address of the DNS server you have chosen for your home network.

In the box marked Secondary DNS Server IP enter the secondary IP address of the DNS server.

Place a check in the box labeled Enable DNS Relay.

Click Apply at the bottom of the page and you are finished!

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 Arris DG860A Info

Don't forget about our other Arris DG860A info that you might be interested in.

Rachel Bauer

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Rachel Bauer is an owner and primary author for She is available on Google+ and you can find more of her articles in the Networking section of our site.