When you make a change to your domain, like update the nameservers, switch it to another IP address, or change the A or CNAME records, you’ll likely need to flush your local DNS cache to get the updated information.
Open the Start menu
Click on Run
Type cmd and press the OK button
In the command prompt, type ipconfig /flushdns and press the Enter key
Open a terminal window
Type /etc/rc.d/init.d/nscd restart and press the Enter key
Open a terminal window
Type dscacheutil -flushcache and press the Enter key