The process stops and then starts the NCSD service within seconds. Use this command to clear NCSD DNS cache on your Linux machine: sudo /etc/init.d/nscd restartĮnter your password if necessary. Press Ctrl+Alt+T on your keyboard and use the corresponding command to clear the DNS cache for the service your Linux system is running. Some of them are NCSD (Name Service Caching Daemon), dnsmasq, and BIND (Berkely Internet Name Domain).įor every distribution, you need to launch a terminal window. It depends on which service you have on your distribution and whether it is enabled by default. Some distributions, like Ubuntu, don’t have a default DNS service at all. Each Linux distribution might use a different DNS service. Linux distributions are a bit different from Windows and Mac machines. You should get the correct and updated IP mapping from DNS servers next time your machine sends a DNS query. The DNS Cache database on your computer is now clear. Open the Start Menu and start typing command prompt until you see it in the results. Load the Command Prompt as an administrator. Foe the example below, we will be using Windows 10.ġ. The procedure is the same for almost all Windows systems. Sudo discoveryutil mdnsflushcache sudo discoveryutil udnsflushcachesĬlearing DNS cache is an easy and quick process. Sudo dscacheutil -flushcache sudo killall -HUP mDNSResponder You can copy and paste them directly from the table into your terminal.

The table below lists the commands for clearing the DNS cache on most macOS and Mac OS X versions.

For example: sudo killall -HUP mDNSResponder say dns cleared successfully Flush DNS Commands on Older macOS and Mac OS X Versions Note: If you want to hear an audio notification after the DNS flush is complete, type say some text after the first command.

Check dns servers mac terminal