How To: Flush DNS Mac OS X

If you are experiencing issues browsing web pages in your Safari, Firefox, or Google Chrome, you may need to flush your DNS cache.

1. Open Terminal (Applications -> Utilities -> Terminal)

2. Type the following:

sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder;

3. You will be prompted to enter your Mac account password. Your cache will be flushed and complete similar to below.