Frequently Asked Question

Flushing DNS Cache on a Mac
Last Updated 9 years ago

Mac computers automatically cache the hostname of the websites they visit, so pages will load faster. If the IP address of a website changes, it takes some time for the Mac to notice. To speed this update on your computer to get rid of the related “Page Not Found" errors try flushing your DNS cache.

1. Go to Applications -> Utilities -> Terminal.
2. Type the DNS command.

3. This command differs depending on which OS X version you use.

Mountain Lion or Lion: sudo killall -HUP mDNSResponder

Snow Leopard: dscacheutil -flushcache

Leopard and older: lookupd –flushcache

5. Type the administrator's password and press Enter on your keyboard.

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