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Public DNS Servers

Domain Name Service (or Server or System) is an internet service that translate easily memorized domain names into IP numbers and vice-versa. DNS Servers can be better understands as Yellow page directory to the Internet.
Every ISP runs DNS services for their customers and users. A user can also runs DNS service for its own.

There are many DNS servers which are open for all, commonly known as Public DNS Servers.
IP addresses of main Public DNS Servers are :-

Google Public DNS Servers
1.   8.8.8.8
2.   8.8.4.4
3.  2001:4860:4860::8888
4.  2001:4860:4860::8844

 Level 3 Public DNS Servers
5.    4.2.2.1
6.    4.2.2.2
7.    4.2.2.3
8.    4.2.2.4
9.    4.2.2.5
10.  4.2.2.6

 OpenDNS Public DNS Servers
11.     208.67.222.222
12.     208.67.222.222
13.     2620:0:ccc::2
14.     2620:0:ccd::2

 Norton Public DNS Servers
15.   198.153.192.1
16.   198.153.194.1

 Comodo Secure Public DNS Server
17.   8.26.56.26
18.   8.20.247.20

 Other Public DNS Server
19.   195.46.39.39
20.   195.46.39.40
21.   156.154.70.1
22.   156.154.71.1
23.   216.146.35.35
24.   216.146.36.36
25.   151.236.6.156
26.   118.88.20.195

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