While the listed free dns servers are from different providers, you will have different levels of quality in their service. On certain countries, using third party dns public servers is also useful to prevent website blocks as it happens in China, Siria, Iran, Venezuela and other countries were Internet goverment controls are very strict.

For example, most local DNS assigned by ISPs will never be as safe and fast as Google DNS servers, because of their anycast dns network.Īnother reason to use other DNS servers from 3rd party companies and ISPs is to prevent your current ISP from taking full control of your web activity, as you will resolve using their DNS servers, and they can log any query you made. Sometimes when you are facing negative caching issues, or not resolving websites and hosts as it should, a good idea is to change your DNS servers for one public free DNS server as the ones listed before.īut not only when you have problems you must change your local network DNS, it can also help you to improve website speed times. This is the main reason on why you may think about switching dns servers on your local PC or network. There a a few situations when you may need to change dns servers. This DNS servers are set in your local router or modem configuration. Your current DNS servers were probably assigned by your ISP, they all do it when you purchase your monthly internet connection service. Why should I change my current DNS Servers?

Norton connectsafe vs opendns