How to flush DNS cache
Posted by RAJU K, Last modified by Kim S. on 20 February 2016 06:36 PM
Most of your computer systems will temporarily store the website names that you have been visiting lately. This process speeds up name resolution if multiple lookups are done to the same address, such as is common when browsing the web. Hence, if you visit FastWebHost.com second time, the system will already have the name mapped and hence will retrieve the mapping (DNS) quickly.
How to Flush DNS in Microsoft Windows
In Microsoft Windows, you can use the command ipconfig /flushdns to flush the DNS resolver cache. Open the command prompt and type the following:
The above command will completely flush the DNS, deleting any incorrect entries too.
Turning Off DNS Caching under Microsoft Windows (Advacned users)
If you experience frequent issues with DNS caching under Microsoft Windows, you can disable client-side DNS caching with either of these two commands:
This will disable DNS caching until the next reboot. To make the change permanent, use the Service Controller tool or the Services tool to set the DNS Client service startup type to Disabled. You can permanently disable DNS Client by following the below steps:
Flush DNS in Mac OSX
In Mac OSX Leopard, you can use the command dscacheutil -flushcache to flush the DNS resolver cache:
In Mac OSX versions 10.5.1 and before, the command lookupd -flushcache performed the same task:
Flush DNS in Linux
In Linux, the nscd daemon manages the DNS cache. To flush the DNS cache, restart the nscd daemon. To restart the nscd daemon, use the command `/etc/init.d/nscd restart`.
Hope this article helps to resolve DNS cache problems.