How the check works
We ask the registry that runs the domain's top-level domain, using RDAP, the standard lookup protocol that replaced WHOIS. RDAP answers with the official registration record: dates, registrar and status codes.
Age is counted in whole days from the registration date to the moment the answer was produced.
Reading the result
The registration date is when the domain was first created at the registry. A domain that was dropped and registered again shows the newer date, so age reflects the current registration, not necessarily the first time the name existed.
Status codes such as client transfer prohibited are normal protections set by the registrar. Codes that mention a hold or a pending delete are worth a closer look.
A very new domain is not a problem by itself, but it is one signal worth weighing when you are checking a sender, a store or a link you did not expect.
Limits worth knowing
Some registries do not publish a registration date, and a few top-level domains have no RDAP service at all. When that happens the result says so instead of guessing.
Registrant names and contact details are not shown: most registries redact them, and we do not collect them. Enter the registered domain, not a subdomain such as mail.example.com.
Frequently asked questions
Is this the same as WHOIS?
It answers the same question from the newer RDAP system, which registries now use as their official source. You get structured data instead of free-form text.
Why does it say the domain is not registered?
The registry has no record of that exact name. Check the spelling and the ending, and enter the main domain rather than a subdomain.
Can I see who owns the domain?
No. Owner details are redacted by most registries for privacy, and this tool does not try to get around that.
Why is the age different from what I expected?
If a domain expired and was registered again, the registry shows the new registration date. The age here follows the current registration.