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What Is DNS and How Does It Work?

What Is DNS and How Does It Work?

February 20, 2026

Aalok Saxena

Illustration showing how DNS works by translating a domain name into an IP address, connecting a browser request to web servers through the domain name system.

If you’ve ever wondered what is DNS, you’re not alone. DNS is one of the most important parts of how the internet works, yet most people never notice it running quietly in the background. Every time you open a website, send an email, or connect to an online service, DNS helps your device find the right destination.

In simple terms, DNS makes the internet easier for humans to use by translating domain names into machine-readable IP addresses.

For example, when you type webhostingpeople.com into your browser, DNS helps your computer locate the exact server where that website is hosted.

Understanding DNS in Simple Words

DNS stands for Domain Name System. It works like the contact list on your phone.

You don’t remember people’s phone numbers—you remember their names. DNS does the same thing for websites. Instead of remembering a long number like:

142.250.183.206

You can simply type:

google.com

DNS converts the name into the number behind the scenes.

How the Domain Name System Works (Step-by-Step)

How the Domain Name System Works

Here’s what happens in milliseconds when you visit a website:

1. You Type a Domain Name

You enter a website address in your browser, such as example.in.

2. Your Browser Checks Local Cache

Your device first checks if it already knows the IP address from a previous visit.

3. Request Goes to a DNS Resolver

If not found, the request is sent to a DNS resolver (usually provided by your hosting company or ISP).

4. Resolver Contacts Root Servers

The resolver asks the root DNS servers where to find information for that domain extension (like .com or .in).

5. TLD Server Responds

The Top-Level Domain (TLD) server directs the resolver to the authoritative nameserver.

6. Authoritative Nameserver Gives the Answer

This server provides the exact IP address of the website.

7. Website Loads

Your browser now connects directly to that server and displays the website.

All of this typically happens in under one second.

Why DNS Is Important for Every Website

DNS is not just a technical detail—it directly affects:

  • Website speed
  • Reliability
  • Email delivery
  • Security
  • Global accessibility

Without DNS, users would need to memorize numerical IP addresses for every site they visit.

Real Example for Indian Website Owners

Let’s say you register a .in domain for your business. That domain must be connected to your hosting server using DNS records.

At WebHostingPeople, we act as an accredited registrar for .in domains, which means domains are issued directly under official registry standards. For instance, a .in domain is available at ₹555 per year, and DNS configuration is included as part of normal domain management so your website connects correctly.

register a .in domain name

Common Types of DNS Records (You’ll See These in Your Control Panel)

Record TypePurposeExample Use Case
A RecordConnects domain to an IP addressPoint domain to hosting server
CNAMERedirects one name to anotherwww to root domain
MX RecordHandles email routingConnect domain to email service
TXT RecordVerification & securitySPF, DKIM setup
NS RecordDefines nameserversLinks domain to DNS provider

These records are usually managed from your hosting or domain dashboard.

difference between domain and hosting

How DNS Affects Website Speed

A slow DNS lookup can delay your website before it even starts loading. That’s why quality DNS infrastructure matters.

Reliable DNS ensures:

  • Faster initial connection
  • Reduced downtime risk
  • Better global performance
  • Improved user experience

This is especially important for Indian businesses serving visitors across different regions.

DNS vs Domain vs Hosting (Quick Comparison)

FeatureDomainDNSHosting
What it isYour website nameTranslator systemWhere files live
Visible to usersYesNoNo
Needed to run a siteYesYesYes
Exampleyourbusiness.inConverts to IPStores website data

Think of it like this:

  • Domain = Address
  • DNS = Google Maps
  • Hosting = The Building

People Also Ask

Is DNS the same as a domain name?

No. A domain name is the human-readable address, while DNS is the system that translates it into an IP address.

Can a website work without DNS?

Not practically. Without DNS, users would need to enter IP addresses manually.

Does DNS affect SEO?

Indirectly, yes. Faster DNS resolution improves site speed and availability, which supports better search performance.

Who manages DNS for a website?

Usually your domain registrar or hosting provider manages DNS settings.

ICANN overview of how DNS works

When Do You Need to Configure DNS?

You typically update DNS when:

  • Connecting a new domain to hosting
  • Migrating to a new server
  • Setting up business email
  • Adding CDN or security services
  • Launching a new website

Most users only interact with DNS occasionally, but it’s critical during setup.

FAQs

How long do DNS changes take to update?

Usually between a few minutes and 24 hours, depending on propagation.

Is DNS difficult to manage for beginners?

No. Most providers offer simple dashboards where records can be added or edited without technical knowledge.

What is DNS propagation?

It’s the time required for updated DNS information to spread across global servers.

Can wrong DNS settings break a website?

Yes. Incorrect records can prevent your domain from connecting to the correct server.

Do I need to change DNS after buying a domain?

Only if your hosting is on a different provider. Otherwise, it may already be configured.

DNS is one of the internet’s foundational systems. It quietly translates domain names into IP addresses so users can access websites without needing to understand the technical structure behind them.

Whether you’re launching a personal blog or a business site, understanding how DNS works helps you make better decisions about domains, hosting, and performance. It’s not something you manage every day—but when you need it, knowing the basics saves time and prevents confusion.

For website owners using services like WebHostingPeople, DNS is already integrated into the domain and hosting environment, making it easier to connect your domain, configure records, and keep your site accessible without dealing with complex infrastructure.

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