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The Domain Name System: How It Works

The Domain Name System (DNS) is the backbone of the Internet. Without it, you wouldn’t be able to access websites or send email unless you memorized IP addresses. It’s kind of like a phone book for the Internet: it translates domain names into IP addresses so that networked devices can understand each other. In this article, we’ll explain how DNS works and why it’s important for understanding how the world wide web works.

What is the Domain Name System (DNS)?

The Domain Name System (DNS) is a hierarchical distributed naming system for computers, services and other resources connected to the Internet or a private network. The domain name system translates human-friendly computer hostnames into IP addresses. In order to achieve this, it must maintain data about that mapping. This data is stored in a set of interrelated databases called zones.

The Domain Name System was created in 1983 by Paul …

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|In: Computer Network Basics|Last Updated:
A Beginner’s Guide To The Domain Name System (DNS)

The Domain Name System (DNS) is one of the most important elements of the internet, but it’s also one of the most complex. Understanding how DNS works not only helps you get around in your browser, but also empowers you to better understand and troubleshoot websites that run on servers. With this beginner’s guide to DNS, I’ll introduce you to everything from basic concepts like domain names and domain name servers to advanced topics like name records and record types. We’ll cover authoritative vs. recursive name servers; how they work together; what changes when a domain is transferred; why some sites give you bad results when they’re not responding properly; plus much more!

The domain name system, or DNS, is a system of computers that translates human-readable website names into machine-readable IP addresses. In other words, when you type “google.com” into your browser’s address bar and press Enter, the DNS …

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