A domain name service (DNS) translates a human-friendly Internet address such as “yahoo.com” into an IP address, such as “188.8.131.52”.
DNS blocking is often used to censor web sites because it relatively easily to implement. However, it is also easy to avoid. For example, you can use one of the public servers listed below. Here’s how to change your DNS:
- Windows users will need to go into their network device’s properties, then go into the IPv4 properties, and then change the DNS servers in the bottom section of the window.
- Mac OS X users will need to go into their System Preferences, click on “Network“, choose their network device, click on “Advanced”, and then enter DNS servers after clicking on the DNS tab.
- Linux users will need to click on their network applet, choose Edit Connections, click on “Edit” for your network device, and under the “IPv4 Settings” tab, choose the “Automatic (DHCP) addresses only” profile, and then add the DNS servers into the DNS servers textbox, with each server address separated by a comma.
Public DNS Severs
Here are some free and public DNS server you can use, the first two listed are most private:
|Provider||Primary DNS Server||Secondary DNS Server|
|Comodo Secure DNS||184.108.40.206||220.127.116.11|
- The DNS servers listed here for OpenNIC are just two of many around the world. Instead of using the OpenNIC DNS servers listed above, see their complete list of public DNS servers use two that are close to you. OpenNIC also offers a few IPv6 public DNS servers.
- The censurfridns.dk DNS servers are uncensored and operated by a privately funded individual. They are located in Denmark. More info about them here. IPv6 DNS servers are also available at 2002:d596:2a92:1:71:53:: and 2002:5968:c28e::53
- These Public-Root DNS servers are the only two currently operating in the US but if you’re located outside the US, see their complete list here and choose one close by.
- The DNS servers listed above as Level3 will automatically route to the nearest DNS server operated by Level3 Communications. This company provides access to the Internet backbone.
- Google also offers IPv6 public DNS servers: 2001:4860:4860::8888 and 2001:4860:4860::8844
- OpenDNS Home also offers DNS servers that block adult content, called OpenDNS FamilyShield. It’s also free but you must sign up. They also offer a premium DNS called OpenDNS Home VIP.
- GreenTeamDNS “blocks 18 categories which include malware, botnets, dangerous websites, adult related content, aggressive/violent sites as well as advertisements and drug-related websites”
- Register here with SafeDNS for content filtering options in several areas
- Hurricane Electric also has a IPv6 public DNS server available: 2001:470:20::2
- puntCAT is located near Barcelona, Spain. The IPv6 version of their DNS server is 2a00:1508:0:4::9