01 Sep 2022 Macbooks Networking

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How to Flush DNS Cache on MacBook: Terminal Command

Flushing DNS cache on a MacBook requires opening Terminal and running `sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder`. Enter your administrator password when prompted. This command works on macOS Monterey, Ventura, and Sonoma. Older macOS versions may use slightly different commands, but this two-part command covers most modern Mac systems.

CloudScale AI SEO - Article Summary
  • 1.
    What it is
    This article provides a terminal command to clear DNS cache on Mac computers using a sudo command in Terminal.
  • 2.
    Why it matters
    Flushing DNS cache can resolve website loading issues, connection problems, or force your system to fetch fresh DNS records when network configurations change.
  • 3.
    Key takeaway
    Use Terminal with a sudo command to quickly flush DNS cache on Mac when experiencing network connectivity issues.
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I am not going to tell you why you would need to flush your DNS cache (you will know if you need to). So, to flush DNS on a mac simply fire up Terminal and run the following sudo command:

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sudo dscacheutil -flushcache
sudo killall -HUP mDNSResponder
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