What are domain names and how do they work?

Key takeaways:

• A domain name is your website’s unique online address, helping visitors find and remember your brand more easily.
• The Domain Name System (DNS) translates your domain name into an IP address so browsers can connect visitors to your website.
• Choosing the right domain name and extension can build trust, support your branding, and make your website easier for your target audience to find.

A domain name is your website’s address on the internet. It’s what people type into their browser to find you online. Think of it like a home address, but for your website. For example, typing google.com or openai.com takes you directly to those sites.

A domain name replaces a long, hard-to-remember numerical IP address with a simple, readable name that is easier to recall and share. It also forms part of a website’s uniform resource locator (URL). Since your domain is often one of the first things people see when they interact with your brand online, choosing the right one matters from day one.

A domain name consists of two main parts: the name and the extension. For instance, in example.com, “example” is the name and “.com” is the domain extension. Ideally, the name should reflect your brand, business, or website’s purpose so it feels relevant and memorable to your audience.

In this article, you’ll learn:

• How domain names work
• The structure of domain names
• The different types of domain names
• How to choose and buy a domain name
• How domain registrars help you manage your domain

How domain names work

When someone enters a domain name into their browser, their device sends a request to the Domain Name System (DNS). The DNS works like the internet’s phone book, matching the domain name to its corresponding IP address so the browser knows which website to load.

This process happens behind the scenes in milliseconds, allowing visitors to reach a website without having to remember its numerical address.

Here’s how it works:

1. Request

When you type a domain name into your browser, such as google.com, your device needs to find the website’s IP address. It first sends a request to a DNS resolver, which is usually provided by your internet service provider.

2. Server lookup

If the resolver does not already have the IP address stored, it begins searching for it. It contacts other DNS servers until it finds the server responsible for the domain.

3. Authoritative DNS server

The authoritative DNS server stores the official DNS records for the domain. Once contacted, it returns the correct IP address for the website.

4. Response

The DNS resolver sends the IP address back to your device. It may also temporarily store the result so future visits can load more quickly.

5. Connection

Your browser uses the IP address to connect to the website’s hosting server. Once the connection is established, the requested webpage loads on your screen.

Components of domain names   

A domain name is made up of different parts that each serve a purpose. Knowing what these parts are can help you choose a better domain, manage it more effectively, and understand how the internet connects users to websites.

Let’s break down the key components using this example URL:

https://blog.example.com/resources

Protocol

The protocol appears at the beginning of a web address, usually as http:// or https://. It tells the browser how to communicate with the website’s server. HTTPS provides a more secure connection by encrypting the data exchanged between the browser and server.

Subdomain

A subdomain appears before the main domain and creates a separate section of a website. Look at the example URL above; “blog” is the subdomain.

Businesses commonly use subdomains for areas such as a blog, online store, or help center while keeping them connected to the main website.

Second-level domain

The second-level domain is “example”. It is the part of the domain name that appears directly before the top-level domain.

Second-level domains are the unique identifiers businesses, organizations, and individuals use online. When choosing one, it is important to select something memorable, relevant to your brand, and easy to type.

Top-level domain (TLD)

The TLD is .com. It is the highest level in the domain name system and can indicate a website’s purpose, category, or location. Common TLDs include .com, .org, and country-specific extensions such as .uk or .ca.

Subdirectory or path

The subdirectory or path is /resources. It follows the domain name and points to a specific folder, page, or location within the website.

How is a domain name different from a URL?

Element	Description	Example
Domain	The name that identifies your site	example.com
URL	The full web address to a specific page	https://example.com/about

While a domain and a URL might sound similar, they have distinct meanings.

By definition, a domain is the human-readable address that identifies a website, such as example.com. It represents the online identity of a business or individual.

Meanwhile, a URL, or uniform resource locator, is the complete web address that specifies the exact location of a specific page or resource on the internet. It often includes the protocol (http:// or https://), the domain name, and the specific path or resource on the server, such as folders, subfolders, or a filename.

In simpler terms, a domain is the broad identifier for a website, while a URL provides the specific address used to access a particular page within that website.

Types of domain names

There are many types of domain names you can use for your website. Let’s look at each one.

Type	Description	Example
gTLD	General, global extensions anyone can register	.com, .net, .org
ccTLD	Country-specific domains for local audiences	.us, .uk, .ca, .au
IDN ccTLD	Local-language versions	.中国, .рф, .السعودية
Subdomain	A separate section of a main domain	blog.example.com
sTLD	Sponsored extensions for specific organizations or communities	.edu, .gov, .mil

Generic top-level domains (gTLD)

These are the most well-known top-level domain (TLD) extensions worldwide. They are not tied to any specific country or region and are usually available for domain registration by anyone. Here are some of the most popular gTLDs:  

• .com  
• .net  
• .biz  
• .org  
• .info  

Among all these domain extensions, .com is widely regarded as the most popular gTLD. As of 2025, approximately 60% of global websites used a .com top-level domain, according to our domain insights report for Q1 2026.    

Country code top-level domains (ccTLDs)

Unlike gTLDs, ccTLDs are two-letter domain extensions that indicate the country or region a website is associated with.  

For example:  

• .us is for the United States  
• .uk is for the United Kingdom  
• .ca is for Canada  
• .au is for Australia  

This domain extension is best for domain owners who have a local business and want to target a specific audience in a region or country.

Internationalized country code top-level domains (IDN ccTLD)  

These domain extensions let businesses use website addresses in their own native language and characters, instead of just using the English alphabet.  

For example:  

• .中国 is the Chinese version of .cn for China  
• .рф is the Cyrillic version of .ru for Russia  
• .السعودية is the Arabic version of .sa for Saudi Arabia  

These domains help make the internet more accessible and inclusive for people who read and write in different languages. 

Subdomains  

A subdomain is a part of your main domain that works like a separate section of your website. It appears before your main domain name, like blog.yourfashionstore.com.  

Subdomains are great for organizing content. You can use one for your blog, shop, or help center while keeping everything tied to your main site. It’s a simple way to keep things structured without needing a new domain.  

Sponsored top-level domains (sTLD)  

sTLDs are domain extensions that are sponsored by a specific organization or community. These domains are often used by groups that share a common interest or goal. In addition, these organizations also ensure that websites using these domains meet specific requirements.  

For example:  

• .edu is for educational institutions  
• .gov is for government entities  
• .mil is for the military  

These domain extensions are typically restricted to certain types of organizations or groups, and not all are accessible to the public.  

Other domain terms you should know

You may also encounter these terms when registering or managing a domain:

• Root domain: The main domain name without any subdomains or page paths. For example, example.com is the root domain of blog.example.com.
• Alias domain: An additional domain that directs visitors to another domain or website instead of hosting separate content.
• Naked domain: A domain written without the www prefix, such as example.com instead of www.example.com.
• Primary domain: The main domain used for a website or account. Other connected domains may direct visitors to this domain.
• Secondary domain: An additional domain connected to the same website or account. Businesses may use one to support another brand, market, or domain variation.
• Domain alias: Another domain name that points to the same website as the primary domain. It allows visitors to reach the site using more than one address.
• Redirected domain: A domain configured to automatically send visitors to a different domain or URL.

The role of domain registrars

When registering and purchasing a domain name, you need a domain registrar. Domain registrars are companies authorized by the Internet Corporation for Assigned Names and Numbers (ICANN) to register and manage domain names.    

ICANN is a non-profit organization responsible for managing and coordinating the DNS and the allocation of IP addresses. This organization ensures the stability, security, and integrity of the DNS. They also set policies and guidelines for domain registrars and registries.  

Common responsibilities of domain registrars include: 

• Domain name registration: These organizations allow individuals and businesses to register and purchase domain names for a specific duration, typically on an annual basis.  
• DNS management: Domain registrars provide tools and interfaces to manage DNS settings, including setting up custom nameservers, managing DNS records, and configuring domain-related services.   
• WHOIS management: Registrars collect and maintain WHOIS data, including the domain owner’s information, contact details, and registration dates. They also ensure compliance with ICANN’s policies regarding WHOIS data accuracy and privacy.   
• Support and assistance: Registrars offer customer support and assistance with domain-related issues, including technical support, domain transfers, and renewals.   

One of ICANN’s trusted registrars is Network Solutions. We have served various small businesses, helping them get online seamlessly and securely. Partnering with a registrar will ensure you have trouble-free domain name management.      

How to choose a domain name  

A domain name is often one of the first things people see when they visit your site. It plays a key role in how professional and trustworthy your online presence appears. A custom domain can also give visitors confidence that they’re in the right place.

Here are a few tips for choosing one:

• Think of domain name ideas that fit your brand: Keep the name short, relevant, and easy to remember.
• Make it easy to say and spell: Avoid numbers, hyphens, or unusual spellings that may confuse visitors.
• Check domain availability: Use a WHOIS lookup tool to see whether the name is already registered.
• Choose a suitable extension: .com is widely recognized, but alternatives such as .net, .co, or industry-specific extensions may also work.
• Make it brandable and unique: Avoid names that are too generic or too similar to your competitors.

For more detailed guidance, read our domain name guide for small businesses.

How to buy a domain name 

Buying a domain isn’t just about picking a name. It’s also about knowing where to look and how to get the best deal.

1. Choose and register a domain: Pick a domain name that reflects your brand and is easy to remember. Use a domain registrar, such as Network Solutions, to check whether it’s available. If it is, register it to secure the name for your website.
2. Negotiate: If the domain you want is already owned, consider contacting the owner or working with a trusted broker. Research the domain’s history and value, set a budget, and keep the process professional.
3. Consider domain auctions: Auctions can help you find expired domains, premium names, and other options that aren’t available through a standard search. Research each domain carefully before placing a bid.
4. Secure your domain: Keep your domain renewed and protect it with features such as an SSL certificate and domain privacy protection.

For a more detailed walkthrough, read our guide on how to buy a domain name.

Frequently asked questions 

Find the perfect domain to help you break through  

Your domain represents your brand, so it must be memorable and easy to recall to create a lasting impression on users. Since domain names are expected to grow in the future, you should create and register one that best represents your business and resonates with your target audience.    

We offer an AI Domain Name Generator that provides several domain name suggestions that are available on the market. We also offer Domain Privacy + Protection to mask your personal information in the public WHOIS database. You can also choose from our different extensions and pair them with a custom email address and other services that can improve your online presence.