Free Fast DNS Servers List

The Domain Name System (DNS) is a hierarchical naming system for computers, services, or any resource participating in the Internet. It associates various information with domain names assigned to such participants. Most importantly, it translates domain names meaningful to humans into the numerical (binary) identifiers associated with networking equipment for the purpose of locating and addressing these devices world-wide. An often used analogy to explain the Domain Name System is that it serves as the "phone book" for the Internet by translating human-friendly computer hostnames into IP addresses. 

source: wikipedia

Most DNS servers are now private, meaning that they are configured to only provide service to the people and organizations who own and maintain them.

A few domain name servers on the Internet provide DNS resolutions for anyone who requests it. These are known as “Public DNS Servers.” 

source: tech-faq

Most operating systems and DNS clients will automatically cache IP Addresses and other DNS results, this is done in order to speed up subsequent requests to the same hostname. Sometimes bad results will be cached and therefore need to be cleared from the cache in order for you to communicate with the host correctly. All major operating systems allow you to force this process, so follow these steps in order to flush DNS cache. source: whatsmydns

I recommend norton DNS and ClearCloud DNS. I think they're the best services for preventing malicious websites.

Fast public dns servers:

The Google Public DNS IP addresses (IPv4):

8.8.8.8

8.8.4.4

The Google Public DNS IPv6 addresses:

2001:4860:4860::8888

2001:4860:4860::8844

Dns Advantage:

156.154.70.1

156.154.71.1

OpenDNS:

208.67.222.222

208.67.220.220

Norton DNS:

198.153.192.1

198.153.194.1

GTEI DNS (now Verizon) (Broomfield, CO, US) server IP address:

4.2.2.1

4.2.2.2

4.2.2.3

4.2.2.4

4.2.2.5

4.2.2.6

ScrubIt  dns server address:

67.138.54.100

207.225.209.66

GFI's ClearCloud DNS server address:

Preferred DNS server: 74.118.212.1

Alternate DNS server: 74.118.212.2

Cisco (San Jose, CA, US)

64.102.255.44

128.107.241.185

Comodo Secure DNS

156.154.70.22

156.154.71.22

OpenNIC DNS

202.83.95.227 (AU)

178.63.26.173 (DE)

217.79.186.148 (DE)

89.16.173.11 (UK)

216.87.84.211(US)

Full list of available OpenNIC servers here.

How do I change or setup DNS server IP address?

Linux operating system

FreeBSD operating system

Sun Solaris operating system

Microsoft Windows 7 / Vista / XP / Server 2000 / 2003 / 2008 operating system.

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