How do I get rid of the many DNS entries on our office server

When I run the IPconfig /all command on our office 2012 r2 server, I am receiving a large number of DNS servers in the list. Instead of the responce just listing the IP address of the server itself (172.16.4.1 and 127.0.0.1) and then letting the forwarder on this server take over, I also see the following DNS servers in the list.

4.2.2.1
4.2.2.2
208.67.222.222
208.67.220.220
8.26.56.26
8.20.247.20
156.154.70.1
156.154.71.1

How do I remove all of these entries?

Thanks for your assistance.

Sean
skenny10IT ManagerAsked:
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footechCommented:
Go to the properties of your NIC > then the TCP/IP v4 properties > advanced > DNS tab.  Remove all DNS servers except your internal ones.  I can't imagine why someone would add all of these.

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skenny10IT ManagerAuthor Commented:
Thanks very much.
Natty GregIn Theory (IT)Commented:
they are added for redundancy, they are all free and public dns , comdo, opendns, norton dns and dns advantage
footechCommented:
It's fine to have them as forwarders in the DNS config, but they should never be used on the NIC configuration of a domain machine.
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