What is DNS and how does it connect your domain to your website?

DNS is what connects your domain name to the server where your website lives. Learn how DNS works, what DNS records are, and why it matters for your site.

You type a website name into your browser and the page appears. Simple, right? But your browser does not actually understand website names. It needs a number to find the right server. Something has to translate the name you typed into that number. That something is DNS, the Domain Name System.

If you already understand what a domain name is and how web hosting works, DNS is the piece that connects the two. Without it, your domain would not know where to send visitors, and your hosting would not know which domain is asking.

How does DNS work?

DNS works like a phone book for the internet. When you type a domain name, your browser asks the DNS system to look up the matching server address. Here is how that happens, step by step.

You type a website name. Your browser checks if it already knows the address from a previous visit (that is the local cache). If not, it asks a DNS resolver, which is like a librarian that knows where to look. The resolver checks with nameservers, which are the servers that store the actual records for each domain. The nameserver finds the right address and sends it back. Your browser then connects to the correct server and loads the website.

This entire process usually takes less than a second. DNS explained in simple terms: it turns the name you type into the number your browser needs.

What is a DNS record?

A DNS record is a piece of information stored on a nameserver that tells the internet how to handle requests for your domain. Different types of records serve different purposes.

1. A record

Points your domain name to the server address where your website is stored. This is the most basic and common DNS record.

2. CNAME record

Points one domain name to another domain name. This is often used when you want a subdomain (like blog.yourbrand.com) to load the same content as your main site.

3. MX record

Tells the internet where to deliver emails for your domain. Without an MX record, emails sent to your domain would not reach your inbox.

4. TXT record

Stores text-based information for verification purposes. It is commonly used to verify domain ownership and to set up email authentication.

What is a nameserver?

A nameserver is the server that stores all the DNS records for your domain. When someone types your domain name, the DNS system asks your nameserver for the correct records. Your hosting provider or domain registrar gives you nameserver addresses when you set up your domain. Pointing your domain to the right nameservers is what connects everything together.

What is DNS propagation?

When you update your DNS records, the changes do not take effect everywhere at once. DNS propagation is the time it takes for the updated records to spread across all the DNS servers around the world. This can take anywhere from a few minutes to 48 hours. During this time, some visitors might see the old version of your site while others see the new one. This is normal and temporary.

DNS is one of those things you set up once and rarely think about again, but it is what keeps your domain and your hosting connected at all times. For a more detailed walkthrough, read what is DNS and why does it matter for your website. If you want to understand how propagation timing and TTL values work together, read what is TTL and how does it impact DNS propagation.

Frequently asked questions