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How Does Google DNS Server Work?

Published in Computer Networking 2 mins read

Google Public DNS is a free and public Domain Name System (DNS) service offered by Google. It helps translate domain names (like google.com) into numerical IP addresses that computers use to connect to websites.

How it Works:

  1. Request: When you type a website address in your browser, your computer sends a DNS request to your local DNS server.
  2. Caching: If your local DNS server has the IP address cached, it directly provides it to your computer, speeding up the process.
  3. Forwarding: If the address isn't cached, your local DNS server forwards the request to a DNS server configured in your network settings. This could be your ISP's DNS server or, if you're using Google Public DNS, Google's servers.
  4. Resolution: Google's DNS servers receive the request, resolve the domain name to its corresponding IP address, and send it back to your computer.
  5. Connection: Your computer uses this IP address to connect to the website.

Benefits of Using Google Public DNS:

  • Faster Page Load Times: Google's servers are spread across the globe, ensuring faster response times.
  • Improved Security: Google Public DNS helps block malicious websites and phishing attempts.
  • Increased Reliability: Google's servers are highly reliable and resilient, minimizing downtime.
  • Privacy: Google Public DNS does not track or store your browsing history.

Setting up Google Public DNS:

You can configure your computer or router to use Google Public DNS by changing the DNS server settings.

  • Google Public DNS addresses:
    • Primary DNS: 8.8.8.8
    • Secondary DNS: 8.8.4.4

Conclusion:

Google Public DNS is a reliable and efficient way to resolve domain names and access websites. It offers several benefits, including faster page load times, improved security, and enhanced reliability.

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