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Use Google Public DNS To Access Blocked Websites

Google Public DNS is a free domain name resolution service created to speed up web browsing and improve security.

A webpage that generate content from multiple domains could load faster if the web browser is referring to an efficient DNS server. Similarly, a trustworthy DNS server never fails to resolve domain or redirect web client to fictitious web server.

So, Google Public DNS committed to be an efficient and trustworthy DNS server that you can rely on.

In term of security, for example, you may able to access legitimate websites that are accidentally blocked by telco or ISP DNS server.



How to configure Google Public DNS on Windows 7?

This screencast (above) and guide (below) show you how to replace Windows 7 DNS server with Google Public DNS IP address:

1. Right network connection icon that resides at Notification Area (bottom-right corner where the date/time is shown), choose “Open Network and Sharing Center”, Click “Change adapter settings” at left pane, right click on the network card that’s used to access Internet and select “Properties”.

Change Windows 7 DNS server IP.

2. Double click “Internet Protocol Version 4 (TCP/IPv4), select “Use the following DNS server addresses” and enter IP address of both Preferred and Alternate DNS server as 8.8.8.8 and 8.8.4.4 (which is quite easy to remember):

Change Windows 7 DNS server to Google Public DNS server for faster web surfing and better security.

3. Open Command Prompt window with elevated privilege and execute this command to purge the DNS Resolver cache (i.e. to make new DNS server effective immediately without rebooting Windows 7):
ipconfig /flushdns

Now, you should be able to ping the banned domain or access the blocked website with any web browsers. Note, this trick is only applicable if the telco/ISP accidentally blocks the websites at their own DNS server (it won’t work if it’s blocked by mandatory proxy server or firewall).

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