Domain Availability Checker
Check if your desired domain name is available across multiple extensions.
Enter domain without extension (we'll check all selected TLDs)
What Is a Domain Name?
A domain name is your website’s address on the internet. It is what people type into their browser to visit your site, like topsitehosters.com or google.com. Every website needs one, and choosing the right domain is one of the first decisions you make when building an online presence.
Domain names are managed by registries, each responsible for a specific extension. Verisign manages .com and .net, EURid manages .eu, and each country has its own registry for its national extension like .no, .de, or .nl. When you register a domain, you are reserving that name through a registrar who communicates with the registry on your behalf.
How to Use This Tool
Enter the domain name you want without any extension. Select which extensions you want to check, then click Check Availability. The tool queries the official RDAP registry servers in real time to determine whether each domain is currently registered or available.
Results are colour coded. Green means the domain is available and you can register it immediately. Red means it is already taken. Grey means the lookup could not determine availability, which occasionally happens with certain country code extensions.
Choosing the Right Domain Name
A good domain name is short, easy to spell, and easy to remember. Ideally it reflects your brand, your business, or the purpose of your website.
Avoid hyphens and numbers where possible. They make the domain harder to communicate verbally and easier to mistype. If someone hears your domain name in conversation, they should be able to type it correctly without asking twice.
If your preferred .com is taken, consider whether a country specific extension fits your audience. A business targeting Norwegian customers might be better served by a .no domain than a long or awkward .com alternative. European extensions like .eu, .de, .nl, and .se carry strong regional trust signals and are often less competitive than .com.
For tech companies and startups, .io, .dev, and .app have become widely recognised alternatives. The .ai extension has grown popular with companies in the artificial intelligence space, though it comes at a higher registration cost.
What to Do After Finding Your Domain
Once you find an available domain, register it quickly. Popular names get taken fast, and there is no way to reserve a domain without registering it.
Choose a reputable registrar with transparent pricing and no hidden renewal fees. Cloudflare Registrar offers domains at cost price with no markup. Namecheap and Porkbun are well regarded for competitive pricing and straightforward management. Avoid registrars that offer very cheap first year pricing but charge significantly more on renewal.
After registering, you will need hosting to build your website on that domain. See our hosting comparison to find a provider that fits your needs, or read our guide on what web hosting is if you are just getting started.