Naked Whois
Check one domain or five hundred. No login. No upsells.
How to check if a domain name is available
Enter any domain name above (or paste a list of hundreds), and Naked Whois checks availability against the registrar and authoritative nameservers. No account or login required, no rate-limited WHOIS queries. Searches are not logged or stored.
Free bulk domain availability checker
Most domain tools check one name at a time. Naked Whois accepts up to 500 at once, streaming results as each check completes. Useful when you're brainstorming brand names, validating a list of potential acquisitions, or checking availability across multiple TLDs for the same name. Once results are in, the filter tabs above the table narrow to only available or only taken domains, and the sort toggle switches between "available first" and original order.
Export domain availability results as CSV
After a search completes, click the CSV button above the results table to download every domain checked, its availability status, and its premium registration price as a spreadsheet. Useful for sharing a shortlist with a client or keeping a record of which names you've already evaluated.
Look up WHOIS records for taken domains
Every taken domain in the results has a WHOIS button. Clicking it expands the row to show what the registry has on file: the registrar of record, the date the domain was first registered, the date the current registration expires, and the nameservers it uses. WHOIS data is fetched via RDAP (the modern HTTP-based replacement for the legacy WHOIS protocol) and cached for one hour.
Detect premium domains and their registration prices
When the registrar API is reachable, Naked Whois flags premium domains and shows the registration price alongside the result. Premium domains are reserved by the registry and priced above standard registrations. A DNS-only check cannot distinguish a premium domain from any other unregistered domain, which is why Naked Whois layers a registrar API in front of the DNS check when one is configured.
How DNS-based availability checking works
Registering a domain adds a delegation record (NS record) to the TLD's authoritative nameservers. If a domain has no NS delegation, it's not registered, and therefore available. This tool queries the TLD nameservers directly, bypassing caches and giving you the most authoritative answer available without going through a registrar API.
Naked Whois caches results for five minutes. Recently registered or dropped domains may not reflect their actual status yet, since DNS propagation takes time.
Check domain availability without login
There's no account, no email, no cookies. Type in your domains, get your results, leave. The only data stored is a short-lived cache of DNS results to avoid hammering nameservers on repeated lookups.
Browse availability by TLD
Each TLD has its own landing page with registry history, audience, and any policy quirks worth knowing before you register. The checker on each page is preset to that TLD.