How the domain availability checker works
Enter a name such as mybrand or a full domain such as mybrand.io. We query each extension's registry directly over RDAP, the official registration data protocol. If the registry has no record, the domain is not registered and is very likely available. For the few extensions without RDAP, we check whether the domain is delegated in DNS, which is a reliable but slightly less certain signal ("probably available").
Tips for choosing a domain name
- Keep it short and easy to spell. Avoid hyphens and numbers that people will mishear.
- Prefer .com for broad audiences, a country code (.de, .co.uk) for local businesses, and .io, .dev or .ai for tech products.
- Check trademarks before buying, to avoid disputes under the UDRP.
- Register common typos and other extensions of important brands to prevent phishing.
- Turn on auto-renew and registrar lock so you never lose the domain by accident.
What if the domain I want is taken?
Look it up in WHOIS. If it is close to its expiry date or in redemption period or pending delete, it may become available soon. You can also contact the owner through the registrar's contact form, or try a different extension or a small variation of the name.
Frequently asked questions
Is "available" a guarantee?
Almost always, but premium names, reserved names and names registered seconds ago may still be unavailable at checkout. Your registrar has the final word.
Why are some extensions marked "probably available"?
Those registries do not publish RDAP, so we infer availability from DNS. A registered domain without name servers could still appear available.