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How to Flush Your DNS Cache

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Flushing your DNS cache on your local computer can ensure that you’re pulling the most current version of a website. In this article we will review the simplest methods to flush your DNS cache for a variety of different Operating Systems.

Windows 2000 / Windows XP

  1. Open up a command prompt  by clicking the Start button
  2. Search for Run
  3. Enter in cmd
  4. Type in the command ipconfig /flushdns  


Windows Vista / Windows 7

  1. Click the start button and navigate to the command prompt, Start > All Programs > Accessories > Command Prompt
  2. Make sure that you right click on the command prompt and choose Run as Administrator
  3. Type in the command ipconfig /flushdns  


Mac OS X Leopard

  1. Open up a Terminal session
  2. Run the command dscacheutil -flushcache  


Mac OS X 10.51 / Older

  1. Open a command terminal
  2. Run the command lookupd -flushcache 



  1. Open up a command terminal, either as root, or run step 2 with sudo
  2. Run the command /etc/init.d/nscd restart