How to change the DNS settings on a ZTE ZXHN F620 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 ZTE ZXHN F620 router.

Other ZTE ZXHN F620 Guides

This is the dns guide for the ZTE ZXHN F620. 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:

  • Primary:
  • Secondary:

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


Login To The ZTE ZXHN F620

To get started configuring the ZTE ZXHN F620 DNS page you need to login to your router. If you are already logged in you can skip this step.

To login to the ZTE ZXHN F620, follow our ZTE ZXHN F620 Login Guide.

Change the DNS settings on a ZTE ZXHN F620

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 ZTE ZXHN F620 router.

Beginning on the Status page of the ZTE ZXHN_F620 router, click the choice of Network in green along the top of the page. Then, to the left, pick LAN, and DHCP Server.

Configure the DNS section of your ZTE ZXHN F620

router DHCP lan mac address binding internet settings
This is the dhcp page from your ZTE ZXHN F620 router.

You are now on the page you see above. Scroll down and uncheck the box labeled Assign Isp DNS.

Below that, in the box labeled DNS Server1 IP Address, enter the desired primary DNS Server address. This address is the one that is always used first.

Key in the secondary DNS server address in the box labeled DNS Server2 IP Address. This address is a backup and is only used if the first can't be found.

When you are finished on this page, click the Submit button.

There is one other page we recommend setting, click the choice at the top of the page labeled Application. Then on the left, pick DNS Service, and DNS.

router dns setting
This is the dns page from your ZTE ZXHN F620 router.

On this page, if the DNS servers reflect what is on the DHCP page you are done. However, if this is not the case, go ahead and enter the same primary DNS server address you entered on the last page in the box labeled DNS Server1. Input the same secondary DNS server address that you entered on the previous page in the box labeled DNS Server2. Then, click Submit 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 ZTE ZXHN F620 Info

Don't forget about our other ZTE ZXHN F620 info that you might be interested in.

This is the dns guide for the ZTE ZXHN F620. We also have the following guides for the same router: