How to clear DNS Cache | Flush DNS | Windows 10 | Server 2016 | 2012

We have to flush the DNS cache for any reason, this article explains how one can follow simples steps to clear the DNS catch on any windows operating system.

There is a simple way you can clear the DNS cache, one of the functions of the DNS resolver stores the websites name and IP addresses that you have visited recently from your local machine, the DNS cache is stored on the local machine, it will be used again when you visit some web page again, the same web site will be must faster than earlier. When there is a need to clear the DNS cache there is a command ipconfig /flush clears the DNS cache, this article explains it with examples.

Flush DNS cache

Below command clears all the local DNS cache entries on the machine, these command is being used by network engineer for their daily host record updates to reflect correctly.

Ipconfig /flushdns

C:\Users\Raj>ipconfig /flushdns

Windows IP Configuration

Successfully flushed the DNS Resolver Cache.

if you run the same command what you will get on the screen.

C:\Users\Raj>ipconfig /displaydns

Windows IP Configuration

Could not display the DNS Resolver Cache.

Note: sometimes new IP changes and the DNS resolution takes much time to reflect the new IP one has to wait for sync.

How to display DNS cache entries

Ipconfig /displaydns

docs.microsoft.com
    ----------------------------------------
    Record Name . . . . . : docs.microsoft.com
    Record Type . . . . . : 5
    Time To Live  . . . . : 1
    Data Length . . . . . : 8
    Section . . . . . . . : Answer
    CNAME Record  . . . . : docs.microsoft.com-c.edgekey.net

Record Name . . . . . : docs.microsoft.com-c.edgekey.net.globalredir.akadns.net
    Record Type . . . . . : 5
    Time To Live  . . . . : 1
    Data Length . . . . . : 8
    Section . . . . . . . : Answer
    CNAME Record  . . . . : e13630.dscb.akamaiedge.net


    Record Name . . . . . : e13630.dscb.akamaiedge.net
    Record Type . . . . . : 1
    Time To Live  . . . . : 1
    Data Length . . . . . : 4
    Section . . . . . . . : Answer
    A (Host) Record . . . : 104.79.103.1


www.youtube.com
    ----------------------------------------
    Record Name . . . . . : www.youtube.com
    Record Type . . . . . : 5
    Time To Live  . . . . : 253
    Data Length . . . . . : 8
    Section . . . . . . . : Answer
    CNAME Record  . . . . : youtube-ui.l.google.com


    Record Name . . . . . : youtube-ui.l.google.com
    Record Type . . . . . : 1
    Time To Live  . . . . : 253
    Data Length . . . . . : 4
    Section . . . . . . . : Answer
    A (Host) Record . . . : 172.217.163.206

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