To flush the DNS cache, you can use the following commands depending on your operating system:

Windows:

1. Open the Command Prompt as an administrator.
2. Type the following command and press Enter:
   bash

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   ipconfig /flushdns


macOS:

The command may vary slightly depending on the macOS version:

• macOS Big Sur and later:
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  sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder

• macOS Catalina:
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  sudo killall -HUP mDNSResponder

• macOS Mojave and High Sierra:
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  sudo killall -HUP mDNSResponder

• Older versions (e.g., macOS Yosemite):
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  sudo discoveryutil udnsflushcaches


Make sure to enter your password when prompted.

Linux:

• Systemd-based systems (e.g., Ubuntu, Fedora):
  arduino

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  sudo systemd-resolve --flush-caches

• Using nscd (Name Service Cache Daemon):
  bash

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  sudo /etc/init.d/nscd restart

• Using dnsmasq:
  bash

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  sudo /etc/init.d/dnsmasq restart


Make sure to use the appropriate command for your specific setup!