Domain Age Checker
Find out how old any domain is — see its registration date, age in years, and expiry date via RDAP.
Did this tool work for you?
How to use this calculator
- 1
Enter the domain name you want to look up.
- 2
Click "Check Now" to query the RDAP registry for registration details.
- 3
Results show the registration date, domain age, expiry date, and days until expiry.
Frequently asked questions
Where does the registration date come from?
The tool queries rdap.org, a public RDAP (Registration Data Access Protocol) lookup service that forwards the request to the registry responsible for the domain’s top-level domain. It reads the registration, expiration and last changed events from the answer. If the registry cannot be found or returns an error, you see an error line such as RDAP lookup failed with the status code.
Why does a domain show Unknown for the dates?
Some registries return little or no data through RDAP, and some top-level domains do not offer RDAP at all. Where an event is missing from the response, the tool prints Unknown for registered and expiry. In that case a WHOIS lookup or the registry’s own website may help.
Is this the date the website was launched?
No. It is the date the registry says the domain registration was created. A domain can be registered years before a site goes live, or be sold with an existing history. If a domain expired, was deleted and registered again, the new registration date applies. Transferring a domain between registrars does not reset the creation date.
How is the age calculated?
Age is the time between the registration event and the moment of the check, shown in days and as years with one decimal, using 365.25 days per year. A domain 400 days old therefore shows as 1.1 years. Expiry is counted the same way in whole days from now.
What do the Days to Expiry colours mean?
More than 90 days is green, 30 to 90 is amber and under 30 is red, with EXPIRED shown for a past date. The expiry date in the registry is not always the end of the story: registrars commonly allow a grace period after expiry, and the rules differ by registrar and top-level domain.
What does Last Updated show?
It shows the registry’s last changed event, which records an update to the registration record in the registry database, such as changing name servers or status. It is not a record of changes to the website or to DNS records inside your zone.
Does it show the owner, registrar or name servers?
This tool shows only dates. It does not display the owner, registrar or name servers. The separate WHOIS lookup tool on this site reads the same RDAP data for the registrar, status codes and name servers. Many registries now redact personal contact details in any case.
Domain registration age and expiry from RDAP data
What the tool reports
You enter a domain, and the tool returns four values taken from the registry record: the registration date, the domain’s age, the expiry date and the number of days until it expires, plus the last-changed date when the registry provides one. Age is calculated at the moment you run the check, so the figure grows by one day each day. Dates are formatted as plain calendar dates. Hostnames and URLs are reduced to the domain part before lookup, so pasting a full address works, but a subdomain is looked up as written and registries do not hold records for subdomains, so use the registered domain.
How the values are derived
The tool reads the events array of the RDAP response and uses three event types.
| Output line | RDAP event | Calculation or rule |
|---|---|---|
| Registered | registration | Date as given by the registry |
| Domain Age | registration | Days since registration; years = days ÷ 365.25, one decimal |
| Expires | expiration | Date as given by the registry |
| Days to Expiry | expiration | Whole days from now; red under 30, amber under 90, green otherwise |
| Last Updated | last changed | Shown only when present |
Example inputs and how to read them
Enter a bare domain such as example.com or the one you are considering buying. For a domain you own, the most useful line is Days to Expiry: if it is under 90, check that auto-renew is on and that the payment method at your registrar is current. For a domain you do not own, compare the registered date with what the seller claims. A registration that is only weeks old on a domain advertised as established is worth questioning, though a re-registered name can legitimately show a recent date because the registration, not the website, is what the registry dates. Treat age as one data point about history, alongside archived snapshots and backlink history.
Why age alone proves little
The registration date says nothing about how a domain was used. A ten-year-old name may have been parked, sold several times or abandoned, while a new domain may belong to an established business. For security triage, a very recently registered domain in a suspicious email is a common warning sign, and this tool gives you that date in a few seconds. When the lookup fails or returns Unknown, the cause is nearly always the registry’s RDAP coverage rather than a problem with your input, so try the WHOIS lookup tool or the registry’s own search page.
Learn more from an authoritative source:
MDN Web DocsWHOIS Lookup
Look up domain registration information — registrar, dates, nameservers, and status via the RDAP protocol.
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Results are estimates for informational purposes only and do not constitute professional financial, medical, legal, or technical advice. Read full disclaimer →