What is Google Public DNS?

Google Public DNS is a free, global Domain Name System (DNS) resolution service, that you can use as an alternative to your current DNS provider.

To try it out:

    * Configure your network settings to use the IP addresses 8.8.8.8 and 8.8.4.4 as your DNS servers or
    * Read our configuration instructions.

If you choose to try Google Public DNS, your client programs will perform all DNS lookups by Google Public DNS.
   

Why does DNS matter?

The DNS protocol is an vital part of the web’s infrastructure, serving as the Internet’s phone book: every time you visit a website, your computer performs a DNS lookup. Complex pages often require multiple DNS lookups before they start loading, so your computer may be performing hundreds of lookups a day.
   

Why should you try Google Public DNS?

By by Google Public DNS you can:

    * Speed up your browsing experience.
    * Improve your security.
    * Get the consequences you expect with absolutely no redirection.

Configuring your network settings to use Google Public DNS

When you use Google Public DNS, you are changing your DNS “switchboard” operator from your ISP to Google Public DNS.
In most cases, the IP addresses used by your ISP’s domain name servers are involuntarily set by your ISP via the Dynamic Host Configuration Protocol (DHCP). To use Google Public DNS, you need to explicitly exchange the DNS settings in your operating system or device to use the Google Public DNS IP addresses. The procedure for changing your DNS settings varies according to operating system and version (Windows, Mac or Linux) or the device (computer, phone, or router). We give general procedures here that force not apply for your OS or device; delight consult your vendor documentation for authoritative information.

Note: We recommend that only users who are dexterous with configuring operating system settings make these changes.

Vital: Before you start

Before you exchange your DNS settings to use Google Public DNS, be sure to write down the current server addresses or settings on a piece of paper. It is very vital that you keep these numbers for backup purposes, in case you need to revert to them at any time.
After changing your settings, if you encounter a problem and cannot connect to the Internet, delight call our support numbers for troubleshooting instructions.
We also recommend that you download this page and print it, in the event that you encounter a problem and need to refer to these instructions.

Google Public DNS telephone support

  • 877-590-4367 in the U.S.
  • 770-200-1201 outside the U.S.

Google Public DNS IP addresses

 

The Google Public DNS IP addresses are as follows:

  • 8.8.8.8
  • 8.8.4.4

You can use any number as your primary or secondary DNS server. You can specify both numbers, but do not specify one number as both primary and secondary.

Changing your DNS servers settings

 

Because the instructions differ between different versions/releases of each operating system, we only give one version as an example. If you need point instructions for your operating system/version, delight consult your vendor’s documentation. You may also find answers on Google  user assemble.
Many systems allow you to specify multiple DNS servers, to be contacted in a priority order. In the following instructions, we provide steps to specify only the Google Public DNS servers as the primary and secondary servers, to ensure that your setup will correctly use Google Public DNS in all cases.

Note: Depending on your network setup, you may need administrator/root privileges to exchange these settings.

 

Microsoft Windows

 

DNS settings are specified in the TCP/IP Properties window for the selected network connection.
Example: Changing DNS server settings on Microsoft Windows Outlook

  1. Go the Control Panel.
  2. Click Network and Internet, then Network and Sharing Center, then Manage network relations.
  3. Select the connection for which you want to configure Google Public DNS. For example:

    • To exchange the settings for an Ethernet connection, right-click Local Area Connection, and click Properties.
    • To exchange the settings for a wireless connection, right-click Wireless Network Connection, and click Properties.

    If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

  4. Select the Networking tab. Under This connection uses the following items, click Internet Protocol Version 4 (TCP/IPv4), and then click Properties.
  5. Click Advanced and select the DNS tab. If there are any DNS server IP addresses listed there, write them down for prospect reference, and remove them from this window.
  6. Click OK.
  7. Select Use the following DNS server addresses. If there are any IP addresses listed in the Preferred DNS server or Alternate DNS server, write them down for prospect reference.
  8. Replace those addresses with the IP addresses of the Google DNS servers: 8.8.8.8 and 8.8.4.4.
  9. Restart the connection you selected in step 3.
  10. Test that your setup is working correctly; click here for  Hard your new settings
  11. Repeat the procedure for additional network relations you want to exchange.

 Mac OS X

 

DNS settings are specified in the Network window.
Example: Changing DNS server settings on Mac OS 10.5

  1. From the Apple menu, click System Preferences, then click Network. 
  2. If the lock icon in the lower left-hand corner of the window is locked, click the icon to make changes, and when prompted to authenticate, enter your password.
  3. Select the connection for which you want to configure Google Public DNS. For example:

    • To exchange the settings for an Ethernet connection, select Built-In Ethernet, and click Advanced.
    • To exchange the settings for a wireless connection, select Airport, and click Advanced.
  4. Select the DNS tab.
  5. Click + to replace any listed addresses with, or add, the Google IP addresses at the top of the list: 8.8.8.8 and 8.8.4.4.
  6. Click Apply and OK.
  7. Test that your setup is working correctly;click here for  Hard your new settings
  8. Repeat the procedure for additional network relations you want to exchange.

Linux

 

In most modern Linux distributions, DNS settings are configured through Network Administrator.

Example: Changing DNS server settings on Ubuntu

  1. In the System menu, click Preferences, then click Network Relations.
  2. Select the connection for which you want to configure Google Public DNS. For example:
    • To exchange the settings for an Ethernet connection, select the Wired tab, then select your network interface in the list. It is usually called eth0.
    • To exchange the settings for a wireless connection, select the Wireless tab, then select the appropriate wireless network.
  3. Click Edit, and in the window that appears, select the IPv4 Settings tab.
  4. If the selected method is Automatic (DHCP), open the dropdown and select Automatic (DHCP) addresses only instead. If the method is set to something else, do not exchange it.
  5. In the DNS servers field, enter the Google Public DNS IP addresses, separated by a space: 8.8.8.8  8.8.4.4
  6. Click Apply to save the exchange. If you are prompted for a password or confirmation, type the password or provide confirmation.
  7. Test that your setup is working correctly; click here for  Hard your new settings
  8. Repeat the procedure for additional network relations you want to exchange.

If your distribution doesn’t use Network Administrator, your DNS settings are specified in /etc/resolv.conf.

Example: Changing DNS server settings on a Debian server

  1. Edit /etc/resolv.conf: 

    sudo vi /etc/resolv.conf
  2. If any nameserver lines appear, write down the IP addresses for prospect reference.
  3. Replace the nameserver lines with, or add, the following lines: 

    nameserver 8.8.8.8nameserver 8.8.4.4
  4. Save and exit.
  5. Restart any Internet clients you are by.
  6. Test that your setup is working correctly; click here for  Hard your new settings

Additionally, if you are by DHCP client software that overwrites the settings in /etc/resolv.conf, you will need to set up the client accordingly by editing the client’s configuration file.

Example: Configuring DHCP client sofware on a Debian server

  1. Back up /etc/resolv.conf: 

    sudo cp /etc/resolv.conf /etc/resolv.conf.auto
  2. Edit /etc/dhcp3/dhclient.conf: 

    sudo vi /etc/dhcp3/dhclient.conf
  3. If there is a line containing domain-name-servers, write down the IP addresses for prospect reference.
  4. Replace that line with, or add, the following line: 

    prepend domain-name-servers 8.8.8.8, 8.8.4.4;
  5. Save and exit.
  6. Restart any Internet clients you are by.
  7. Test that your setup is working correctly; click here for  Hard your new settings

Routers

Every router uses a different user interface for configuring DNS server settings; we provide only a generic procedure not more than. For more information, delight consult your router documentation.

Note: Some ISPs hard-code their DNS servers into the equipment they provide; if you are by such a device, you will not be able to configure it to use Google Public DNS. Instead, you can configure each of the computers connected to the router, as described above.

To exchange your settings on a router:

  1. In your browser, enter the IP address to access the router’s administration console. 
  2. When prompted, enter the password to access network settings.
  3. Find the screen in which DNS server settings are specified. 
  4. If there are IP addresses specified in the fields for the primary and seconday DNS servers, write them down for prospect reference.
  5. Replace those addresses with Google IP addresses: 8.8.8.8 and 8.8.4.4.
  6. Save and exit.
  7. Restart your browser.
  8. Test that your setup is working correctly; click here for  Hard your new settings

Mobile or other devices

DNS servers are typically specified under advanced wi-fi settings. But, as every mobile device uses a different user interface for configuring DNS server settings, we provide only a generic procedure not more than. For more information, delight consult your mobile provider’s documentation.
To exchange your settings on a mobile device:

  1. Go to the screen in which wi-fi settings are specified.
  2. Find the screen in which DNS server settings are specified.
  3. If there are IP addresses specified in the fields for the primary and seconday DNS servers, write them down for prospect reference.
  4. Replace those addresses with Google IP addresses: 8.8.8.8 and 8.8.4.4.
  5. Save and exit.
  6. Test that your setup is working correctly; click here for  Hard your new settings

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