How to change the DNS settings on a Netgear C3700-100NAS 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 Netgear C3700-100NAS router.

Other Netgear C3700-100NAS Guides

This is the dns guide for the Netgear C3700-100NAS.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 "", 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 Netgear C3700-100NAS

To get started configuring the Netgear C3700-100NAS DNS page you need to login to your router. If you are already logged in you can skip this step.

To login to the Netgear C3700-100NAS, follow our Netgear C3700-100NAS Login Guide.

Change the DNS settings on a Netgear C3700-100NAS

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

router setup
This is the setup page from your Netgear router.

To configure the DNS server settings, begin on the Basic Home page of the Netgear C3700-100NAS router.

Click the tab at the top of the page labeled Advanced.

Next, click the Setup option in the left sidebar.

Below that hit the option of Internet Setup.

Configure the DNS section of your Netgear C3700-100NAS

router wan setup
This is the wan page from your Netgear router.

First, locate the heading of Domain Name Server (DNS) Address.

Under this heading click the radio button labeled Use These DNS Servers.

Next, enter the main DNS server address you want to use in the boxes labeled Primary DNS. This is the address you will always use unless there is a problem.

Below that is the Secondary DNS. Enter an alternate DNS server address here. This address is only used when there is a problem with the primary one.

If you want to enter a third DNS server address, go ahead and do so in the boxes labeled Tertiary DNS. Most likely this address will never get used so feel free to leave it blank if you want.

That's it, just don't forget to click the green Apply button before you exit.

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 Netgear C3700-100NAS Info

Don't forget about our other Netgear C3700-100NAS info that you might be interested in.

This is the dns guide for the Netgear C3700-100NAS.We also have the following guides for the same router: