Clearing your DNS cache

Clearing your DNS cache makes sure that you get any recent changes you have made to your Policy. It also makes sure that the log page (located at displays any new domains you visit.

The process varies for different devices. Please select your operating system below:

After completing these steps, you may also need to clear your browser’s cache.


  1. Open the command prompt:
    Follow the step for your version of Windows:
  • Windows 8:
    Open the Start screen. Type “cmd”. Right-click the Command Prompt and select “Run as Administrator”.
  • Windows 7 & Windows Vista:
    Open the Start menu and type the “cmd” in the search field. Right-click on “cmd.exe” and select “Run as Administrator”.
  • Windows XP:
    Open the Start menu, click on run, type “cmd”, and press Enter.
  1. Type “ipconfig /flushdns” without the quotes and press Enter.
  2. That’s it!

Mac OS X

  1. Open the Terminal:
  2. In the menu bar at the top of the screen, select the Spotlight search icon on the right (a magnifying glass).
  3. Type in “Terminal”. The Terminal application should appear. Open it.
  4. Find your version of Mac OS X:
  5. In the menu bar at the top of the screen, click on the Apple icon on the left. Then select “About This Mac”.
  6. In the window that opens, look for the version number. Close the window and click on your version number below:
  7. Type the proper command into the Terminal and press Return:
  • Yosemite (10.10.4 and newer)
    sudo killall -HUP mDNSResponder
  • Yosemite (10.10.0 – 10.10.3)
    sudo discoveryutil mdnsflushcache
  • Mavericks, Mountain Lion, or Lion (10.9, 10.8, 10.7)
    sudo killall -HUP mDNSResponder
  • Snow Leopard (10.6)
    sudo dscacheutil -flushcache
  1. When you are prompted, type your Mac OS X password.
    You will not see anything happening as you type your password. Press Return to finish the command.
  2. That’s it!

Phones and Tablets:

  1. Disable and re-enable WiFi. On many devices this will clear the DNS cache.
  2. If this fails to clear the cache, restart the device and try again.