- To delete the cache from Microsoft Windows operating system:
1- Open the Run menu, you can do so from the Start menu or by pressing
the button with the Windows icon + the R button from the keyboard.
2- Open the command server by typing cmd and pressing OK.
3-Type the ipconfig /flushdns command.
MAC v10.6 operating system
Execute the command: dscacheutil -flushcache, from the Terminal.
Mountain Lion or Lion operating system
Execute the command: sudo killall -HUP mDNSResponder.
Linux operating system
Execute the command: /etc/rc.d/init.d/nscd restart, from the Terminal.