Since many people asked me how to bypass a DNS block (a common method to filter websites that you can surf), I'd made a short guide on this topic.
What is DNS?
Technically, in order to access websites, we'll need to enter its unique IP address (for example to access facebook one will need to type http://220.127.116.11/ on the web browser). Since it is hard to remember, a 'phonebook' is used to translate facebook.com to that number automatically to save the hassle. This 'phonebook' is called the DNS or Domain Name System.
A DNS block is done by simple removing the website from the 'phonebook'.
One can bypass a DNS block in just 5 seconds :) Just use another DNS!
1) Go to Control Panel > Network settings.
2) Click on your LAN or Wifi network connection, and click 'Properties'.
3) Select IPv4 and click 'Properties'.
4) Select 'Use the following DNS Server Addresses' and enter 18.104.22.168 and 22.214.171.124.
5) Click OK and you may now access websites that were blocked by your DNS.
PS: The DNS servers 126.96.36.199 and 188.8.131.52 above are Google's DNS servers. Alternatively you may try other free DNS servers like OpenDNS 184.108.40.206 and 220.127.116.11. Note that some websites are still blocked by these DNS servers.