DNS is a system that associates web addresses with their server ip addresses. For example, when you type in google.com, your DNS looks for the ip address that is related to the domain and connects you to the server to which the ip address belongs. Using a DNS service that is different from the default one, can increase your internet speed. In this page, I have displayed the top DNS services that are very useful not only to increase your internet speed but also to increase your online security.
OpenDNS is one of the oldest DNS resolution services. It is a free service but displays ads. You can also opt in for a OpenDNS premium pack which is ad free. Most people use open DNS for the security that is offered. It also offers content filtering and a spell check service. Their DNS IP addresses are 184.108.40.206 and 220.127.116.11
Google Public DNS
Google Public DNS service is very reliable . Google DNS can make a noticeable change in the internet browsing speed.
Google public DNS is preferred over other DNS services because it offers better cache and uses servers that are very close to your geographical position. It also offers the users a better server load-balancing increasing the browsing speed. Their DNS server ip addresses are 18.104.22.168 and 22.214.171.124.
Comodo secure DNS is nice but less widely used DNS service. It includes free internet security and firewall. It also include an optional proxy service. Their DNS server ip is 126.96.36.199 and 188.8.131.52.
These are the top 3 services available. You can make use of them to make internet better, faster and more secure.