Check DNS Servers in Mac Terminal

If you need to flush your DNS cache in Mac OS, there are a few methods you can use depending on your operating system version. In this article, we will show you how to check and reset your DNS servers using the Terminal app.

Method for macOS El Capitan and Newer

Starting with macOS El Capitan, Apple introduced a new command to flush the DNS cache. To do this:

1. Open the Terminal app on your Mac.

2. Type `sudo dscacheutil -flushcache` followed by pressing Enter.

3. Next, type `sudo killall -HUP mDNSResponder` and press Enter again.

Alternatively, you can use a shortcut to open the Terminal app: Press `CMD+Space` on your keyboard to bring up Spotlight Search, then type 'Terminal' and select the application from the results list.

Method for macOS Monterey and Older Mac OS X Versions

If you're using an older version of macOS or OS X, such as Mountain Lion or Lion, you can use the following command:

1. Open the Terminal app on your Mac.

2. Type `scutil --set DNSCacheSize 0` followed by pressing Enter.

Why Flush the DNS Cache?

Flushing the DNS cache is useful when you've made changes to your DNS server settings and need those changes to take effect immediately. It's also helpful if you're experiencing issues with website resolution or connectivity.

In this article, we showed you how to check and reset your DNS servers using Terminal on your Mac. Whether you're running macOS El Capitan or an older version of OS X, these methods will help you ensure that your DNS cache is updated correctly. By flushing the DNS cache regularly, you can improve your online browsing experience and resolve connectivity issues quickly.

Check dns servers mac terminal