How to change DNS Settings?

DNS stands for Domain Name Server is the way to maintain a directory of domain names and translate them to corresponding Internet Protocol (IP) addresses which are constantly kept up to date. This is necessary and useful because although people easily remember the domain names, computer or machine access websites based on IP addresses.

Web browsing and most other internet activity rely on DNS to quickly provide the information necessary to connect users to remote hosts.

When you request a domain name through the internet, your computer tries to know where on the internet that domain is situated. Then it sends the request to the DNS containing the name of the domain and gets this information with numeric IP address from the DNS. Then your computer proceeds to connect to that address.

How to change DNS Settings
Domain Name Server


What are the benefits of changing your DNS settings?

  • Sometimes we want to change our default DNS setting on our computer so that we can easily remember the addresses you used for the particular domain.
  • It also act as a good troubleshooting step while solving certain kind of internet connection problem, might help keep your web surfing more private(assuming you choose service that doesn’t log your data), and could even allow you to access sites that your ISP has chosen to block.
  • It filters out known malware sites and is updated quickly as Google discovers bad factor.
  • It’s anycast so that you will get to the network nearest one of many servers.


ISP (Internet Service Provider) which provides its own default DNS for its customers and Internet services include Internet access, Internet transit, domain name registration and the setting for this server are automatically configures via DHCP (Dynamic Host Configuration Protocol).

But luckily you don’t have to use your own ISP’s DNS. Because there are many available free and public DNS server list for a list of primary and secondary DNS server, which you may use one of them instead.


     DNS Provider


       Primary Address


     Secondary Address


Google Public DNS






Comodo Secure DNS


OpenDNS Home


Norton ConnectSafe





















Before making any certain changes on your DNS configuration, mandatory to note down your current DNS address information. So that you can retrieve these changes if necessary.

Let’s use Google public DNS provider:

Here you can use either primary or secondary DNS Server for changing the addresses.

Change your DNS Server setting:


1. Go to the Control panel.

2. Click Network and the Internet

3. Click the large Network and Sharing Center heading

4. And then go to the Change adapter settings link

Note: In Windows 7, the wireless connection is labeled as Wireless Network Connection, while wired ones are usually labeled as Local area Connection.

5. Select the connection for which you want to configure Google Public DNS through the properties.

6. Select the Networking tab and click on Internet Protocol Version 4(TCP/IPv4) or Internet Protocol Version 6(TCP/IPV6) and then click Properties.

7. Click advanced and selects the DNS tab. If there are any DNS server IP addresses listed there, write them down for future reference, and remove them from this window.

8. And then choose the radio button where it specifies the following DNS Server addresses.

9. Enter preferred DNS server as well as an Alternate DNS Server.

For IPv4: and/or

10. Click OK and confirm the DNS changes,  which takes place immediately.

11. Test that your setup is working correctly; see Test your new setting below.

Instructions to change DNS Settings
Test your setup

1. Go to the Apple Menu and then select System Preferences.

2. Click on Network and select your network interfaces from the left side (Wi-fi or Ethernet etc..) for which you want to configure Google Public DNS.

3. Then click the Advanced button in the lower right corner.

Steps to change DNS Settings
Click the Advanced button

4. Choose the DNS tab.

5. Click on the plus(+) button, if you want to add any new DNS Server.

  • If you want to edit an already existing DNS Server, then click twice on the DNS IP address.
  • If you want to remove any DNS Server then select a DNS server IP address and then click either the (-) minus button or hit the delete key.

6. Click Apply and then OK.

Step by step guide to change DNS Settings
Click Apply

1. Click on System and then preferences.

2. Choose the Network Connection and select the connection for which you want to configure Google public DNS.

3. Click Edit, and then select either IPv4 Settings or IPv6 Settings tab.

5. If the selected method is Automatic (DHCP), then choose the automatic addresses only from the dropdown. If the method is set to something else then no need to modify it.

6. Enter the Google public DNS IP addresses separated by a comma in the DNS server’s field.

7. Finally, click Apply to save the changes.

How to change DNS Settings
Click Apply


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