Explore domain extensions
Search domain extensions
Discover what domain extensions are available for your website. Our database includes hundreds of top-level domains to choose from.
Discover the right domain extension
Instant Domain Search helps you compare and choose the ideal TLD for your website. Check domains in real time and buy from trusted registrars.
Generate creative domain ideas
Use our domain name generator to uncover unique combinations, themes, and extensions tailored to your business or brand.
Compare thousands of domains instantly
We surface the most relevant domain extensions and premium domains in milliseconds, helping you find the best option quickly.
Explore available top-level domains
List of available extensions
.com
Suitable for any type of business, widely recognized and versatile.
.net
Originally intended for network-related businesses, but now used by various industries.
.org
Ideal for non-profit organizations, charities, and advocacy groups.
.ai
Perfect for technology-forward businesses or agencies using artificial intelligence.
.io
Popular among tech startups and companies in the technology industry.
.xyz
A modern and flexible domain choice, appealing to creatives and innovators.
.app
Specifically for mobile apps and application developers, with built-in security features.
.shop
Tailored for e-commerce businesses and online retail stores.
.info
Suitable for informational websites, blogs, and knowledge-based platforms.
.co
Often used as an alternative to .com, ideal for businesses and startups.
.store
Alternative for e-commerce businesses and online retail stores.
.site
Versatile and professional, fitting for personal, business, or portfolio websites.
.online
A global choice for digital-first businesses, freelancers, or anyone building an online presence.
.dev
Designed for developers, coders, and tech communities with enhanced security.
.tech
Focused on technology companies, startups, and innovators in the tech space.
+549 more
Browse hundreds of niche TLDs tailored to specific industries, regions, and communities.
More domain name tools
Instant Domain Search is built to find and secure your domains. Check out our other tools to find the best domain for your website.
Instant domain checker
Our powerful domain search engine pulls from all across the web faster than the eye can see. Search results are returned in less than 100 milliseconds, making it the fastest tool on the internet.
Domain name generator
Get unique and creative domain name suggestions with our AI domain name generator. As you type it confirms availability and where to buy the domain securely.
Buy domains for sale
Find premium domains for sale to make your website stand out. We show available domains for sale, how much they cost, and where to buy them.
Choosing the right extension
What makes a good domain extension?
A good extension is crucial for establishing trustworthiness and relevancy with your audience. Here are important factors when choosing an extension for your domain name:
Choose a memorable extension
Generic domains such as .com, .net, .org are easy to remember because they are so popular. Anyone can buy and register them, and they're perfect for global businesses. That being said, thousands of other TLDs are now available to consider.
Industry-specific
Extensions are a great opportunity to tell people what you do. More than 50 industry-specific TLDs exist, such as .marketing, .agency, .tech, and more. Become relevant to your visitors with an on-brand extension.
Make it short
Shorter extensions are easier to type, share, and remember. We recommend choosing shorter domains (two to four letters) when available, but that's not always necessary. It's an art of choosing an extension that both represents your website while also being simple.
Region-specific
These are extensions such as .us or .uk which represent a specific country (e.g., US and UK). However, not all extensions are available to buy right away. Some regions and countries have specific requirements to buy and register.
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Explore domains from the fundamentals of buying domains to the technology behind Instant Domain Search.
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Domain Extensions FAQs
A domain extension is the last part of a domain name, such as .com, .net, or .org. It represents the TLD (top-level domain) that indicates the purpose or location of a website. Popular extensions like .com are suitable for commercial sites, while other TLDs may have specific purposes.
You can use a TLD search tool to explore available domain extensions. These tools allow you to search by keyword or category and check availability across multiple domain extensions. Some tools also offer a TLD check, which helps you verify if your desired domain is available for registration.
Yes, our tool allows you to see a list of all domain extensions available at once. By entering any domain name, you can see which extensions are available across more than 600 options, ensuring that you find the best one for your website.
You can use an available domain extensions tool to see which domain extensions are still available. This gives you a list of options you can use for your website and allows you to explore different combinations.
If the domain name you want is taken, you can use a TLD checker to see what other extensions are available. For example, if .com is unavailable, you might find that .net, .org, or another domain extension is still an option.
Search millions of domains instantly
The fastest domain search tool on the internet
Instant Domain Search is the ultimate domain search engine to find, buy, and register available domain names and extensions (TLDs). Our tool shows hundreds of results as you type, surfacing the best domain names at the lowest prices. We are an ICANN-accredited domain registrar, so you can search and register domains with confidence.
Search available domain names
Our domain search tool shows you domain and extension combinations in real-time as you type. Explore availability, popularity, and more so you can choose with confidence.
Check more than 1,600 domain extensions
Check domains across the most popular, relevant, and affordable extensions (.com, .org, .ai) for your website URL in seconds.
Domain name generator
Our AI domain generator searches millions of available domains to suggest the most creative, shortest, and unique names.
Explore premium domain names
Discover premium domains for sale that stand out. Identify undervalued options with traffic, backlinks, and domain authority.
Search expired domains
Find expired and expiring domain names with AI-powered search. Explore hundreds of thousands of expired domains in one place.
Bulk domain search
Check availability of thousands of domain names at once. Upload a list or paste domains to search multiple domains instantly.
Instant domain name search tools for finding the best available domains.
Instant Domain Search provides the most comprehensive domain name search tools and features you need to find the perfect domain name.
Domain name checker
Check millions of domains and 1,600+ extensions instantly. Instant Domain Search finds the best available domains with instant results as you type.
Domain price comparison
Compare registrar pricing in real time to find available domains at the lowest prices across top registrars.
Domain history & insights
Track ownership, expiration, and value trends. Find domains that already have traffic, backlinks, or SEO authority.
WHOIS lookup
Look up domain ownership history and registrant information instantly with our built-in WHOIS lookup.
Domain value estimates
Estimate how much a domain might be worth using real market data, comparable sales, and traffic insights.
Premium domain marketplace
Explore high-quality premium domains optimized for branding, traffic, and long-term value.
Tips for choosing a domain
What makes a great domain name?
Choosing the right domain is critical for your website. When you combine it with the right extension, it becomes even more powerful.
Relevant
Your domain name should connect to your brand, business, and web content. It should give visitors a clear idea of what to expect when they land on your site.
Memorable
Great domain names stick in people's minds and stand out from the crowd. Avoid complex or confusing words that challenge spelling.
Short
Short domains are easier to remember and type. Avoid unnecessary words or hyphens that can make your domain name hard to remember.
On-brand
Your domain name and extension offer an opportunity to reinforce your brand identity. Extensions and TLDs specific to your industry can enhance the relevance and credibility of your website.
Guides & blogs
Learn more from domain experts
Explore domains from the fundamentals of buying domains to the technology behind Instant Domain Search.
“Media Guy's pop pick: Instant Domain Search.”
Domain Name Search FAQs
What is a domain name?
A domain name is the address you type into your web browser to visit a website, like "instantdomainsearch.com." It identifies a website on the internet, making it easy for people to find and remember. Like your home address helps people find where you live, a domain name helps people find your website. Our domain search tool helps you find available domains.
Why use Instant Domain Search?
Our free domain name search delivers the fastest search results on the internet. As you type, our tool shows available domains in less than 25 milliseconds using powerful AI and instant search infrastructure. With every query, you see available extensions, suggested similar domains, and premium domains to boost your website performance. You also gain access to a suite of features including price history, WHOIS lookup, estimated value, pronunciation, and where to buy it for the cheapest price.
What if the domain name I want is already taken?
If someone already owns the domain name you want, you still have several options:
- Try a different extension: if someone owns "example.com," check if "example.net," "example.org," or other TLDs remain available. See the full list of available extensions.
- Create a variation: add a word, hyphen, or change the order of words to create a variation of your desired domain name. Our Domain Name Generator suggests similar available domains. Our premium domain search tool also helps you find similar, high-performing domains.
- Contact the owner: the current owner might sell their domain. You can often find owner information by visiting the domain or using WHOIS lookup to locate the owner.
How do I check if a domain name is available?
Use our domain checker to see if a domain name is available. Type the name you want, and you'll receive real-time results that check domains across different extensions (like ".com" or ".net") and provide alternative suggestions.
What are extensions and TLDs, and which one should I choose?
A TLD (Top-Level Domain) represents the part of a domain name that comes after the dot, like ".com" or ".org." The .com extension ranks as the most common, but many others, such as ".net" or industry-specific extensions like ".tech" or ".shop," offer great alternatives. Our domain extension tool helps you explore different TLD options.
How do I buy domains?
Once you find an available domain using our domain search tool, select a registrar to purchase it. We show you pricing from trusted registrars so you can buy with confidence. After buying, you'll connect the domain to your website or hosting provider.