Flush DNS on MacOS

To flush the Domain Name System (DNS) cache on a Mac, you can use Terminal to enter the following command string:

1. Open Finder
2. Click Applications
3. Scroll down to Utilities and click it
4. Open Terminal

5. In the Terminal window, enter the command:

   sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder
   

6. Click Enter, then input your admin password

7. Click Enter again