What is DNS and How Does it Work?

Abhijeet Modi/ July 26, 2021/ Blog

DNS stands for Domain Name System, which is considered an integral component of the internet. People research information and companies through domain names. For example, they type the domain address of the website on the internet to get access to the data online. The main job of the DNS is to convert domain names to the IP address, in order to make it easier for the browser to load information. Each computer has a unique IP address that tells you the place where the device is being used. The domain name system makes it easier for people to research any device without having to remember the complex IP address of the device. Let’s understand how DNS work.

As mentioned earlier, DNS is used for translating the domain name of the website into the IP address. For example, if the website’s domain is www.type.com, the DNS resolution converts it into the site’s IP address or the numerical code, like 120.134.1.1. Note that every device attached to the internet comes with a unique IP address, which is displayed in numerical terms. And, the DNS is used to decode the IP address from the domain name.

The Domain Name System and Its Functions

Just like how people use street or colony addresses to find a house, the IP address is used by cybersecurity to locate the device using a particular website. Each device (whether it’s a smartphone or a laptop) is assigned an IP address. When you type the domain name of the webpage you are looking for in the search bar, the DNS translates this information into the computer-friendly IP address of the webpage to locate it. That’s because the internet hosts millions of websites, which makes it impossible for users to find a webpage without knowing the IP address of the device. That’s what the DNS helps you with.

A DNS query has to go through many hardware components in order to convert the domain name of the website into its IP address. While the process takes only a few seconds, the conversion is quite complex. There is nothing required on the user’s end. The only thing you are supposed to do is initiate a query, which only requires you to type the name of the domain in the Google search bar and hit “search”. The entire DNS lookup process is executed behind the scenes. Let’s check out the details of the process.

  1. The query is typed by the user in the search bar and is submitted to the DNS recursive resolver.
  2. From there, it reaches the DNS root nameserver
  3. The root server manages the query by pointing it to the .com or .net TLD – whatever the domain of the website is.
  4. The TLD server gives the IP address

To put it in simple terms, DNS is one of the easiest and fastest ways to translate the characters into numbers in order to make it easier for the internet to provide you with the results you are looking for.

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