1. The DNS protocol is an important part of the web's infrastructure, serving as the Internet's phone book. Every time when you visit a website, your computer performs a DNS look up.
2.Complex pages often require multiple DNS look ups before they start loading, so your computer may be performing hundreds of look ups each day.
3.If you decide to change the DNS, try Google Public DNS, your client programs will perform all DNS look ups using Google.
Public DNS :
The Google Public DNS IP addresses are as follows:
Primary DNS: 184.108.40.206
Secondary DNS: 220.127.116.11