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What Is A DNS Server And How It Works [Explained]

You should definitely know about certain aspects when you register for a domain name and start working to build an online presence for your business. The Domain Name System (DNS) is one of the primary factors that require vivid insight.

It performs as a valuable part of the internet. The human-friendly names are translated into machine-readable addresses to help you secure an online platform. The domain names are processed, managed and maintained by the DNS. 

If you need enough information regarding this domain then here, we will help you know what is a DNS server and how it works.

DNS Server

DNS tries to locate and present the websites to the users’ private network that they were looking for. The service accessible across the internet is hosted by a DNS server.

A DNS server stores domain names, network names, internet hosts, DNS records and other information related to it, as a database. Translating the domain name into the respective IP address is the most important function of a DNS server. 

DNS searches the records after receiving a query for domain name resolution and reverts back after finding it. If it fails to find any record, it passes the query to other DNS servers until the doubt is settled.

In a hierarchy consisting of a number of DNS servers, the DNS works as a distributary system. A computer that registers to join the DNS is called a DNS server. When the web browser gets a domain name that a user has entered, the browser seeks the IP address from the DNS server for the domain. 

DNS Servers’ Purpose

It is easy to remember the name of a website instead of its IP address. As an example, anyone can remember Google.com. However, remembering the IP address is difficult. But if you consider computers and networks, then it is exactly the opposite. You can search any website easily using its IP address because locating a website through its domain name is pretty tough.

If DNS never existed then users would have to remember all the IP addresses of the sites they want to visit. Now, you can easily find any website by searching for its domain name. When any web site’s IP address changes without any particular reason, DNS connects the new IP address to the domain name. Thus, you do not have to face any trouble in the near future.

DNS System

For internet registered systems, many DNS server supply resolutions to IP address mapping, it is called Domain Server System. There are a number of organizations from the United States, who own and manage the root (main) DNS servers.

Other companies connect their DNS servers to the main servers in a hierarchical organization and supply a distributed system. To use the internet you do not have to create DNS records or manage a DNS server. 

Accessing the DNS server is the ultimate necessity, which you have to do using the IP address that your internet provider grants. Most of the systems can acquire the DNS server IP address automatically.

DNS Root Servers

The DNS system is located under the umbrella named DNS Root server. In the whole world, as a matter of fact, 13 DNS root servers are there. All the domain names and their associated IP addresses’ complete database is stored in those 13 DNS root servers. 

If there is no server whose IP address matches a DNS request, it will reach the DNS root server. The Names of these DNS servers are the first 13 letters of the alphabet. There are 10 servers in the US. One in Stockholm, one in Japan and the last one in London.

Primary and Secondary DNS Servers

On your computer or router, a primary and a secondary server is built, as soon as you connect your device to the internet service provider. The prime reason behind their existence of the two DNS servers is that if one breaks down another will work to resolve the domain name you are searching for.

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