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How do I flush and clear DNS cache on Mac?
To flush your DNS cache on macOS Big Sur:
- Type in Terminal, and double-click the Terminal application under Top Hit to open it.
- Once Terminal is open, enter this command: sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder.
- Enter your Mac’s password and then press Enter to clear the DNS cache.
Can you flush DNS on Mac?
There are a few different commands to use for flushing DNS cache on OS X and macOS depending on the version you are running….Flush DNS Commands on Older macOS and Mac OS X Versions.
| Mac OS X or macOS version | Terminal Command |
|---|---|
| Tiger (version 10.4) | lookupd -flushcache |
Is Flushing DNS bad?
It’s important to flush a DNS cache for a few reasons. The first is the cache may contain outdated information. Even if you clear your browser history, the DNS cache will still have the old information, and the server needs to be flushed to get the updated results. Another reason to clear the cache is privacy.
How to clear DNS cache on macOS High Sierra?
For macOS Catalina, Mojave, High Sierra, Sierra, and macOS El Capitan the command is the same. Open Terminal using Launchpad or Use Finder → Applications → Utilities, or Spotlight Search (Command+Space Bar) for this.
Is there a way to flush out the DNS cache?
We’ll show you how to flush out DNS cache in MacOS Sierra 10.12 and later. Note: this uses the command line and thus is aimed at more advanced users. It’s fairly rare that a novice Mac OS user would need to reset their DNS cache anyway, but often just rebooting will achieve the same effect.
Why is my DNS cache stale on my Mac?
Additionally, sometimes name servers and domains may not resolve as intended if you have stale DNS cache on the Mac, another situation where resetting DNS cache can often be the solution. We’ll show you how to flush out DNS cache in MacOS Sierra 10.12 and later.
What’s the latest version of macOS High Sierra?
If the above approach doesn’t work for whatever reason, you can break the command syntax down into smaller components: This applies for macOS High Sierra, which is versioned as Mac OS 10.13.x.