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Check domain age and public WHOIS data
Check the published registration date and the domain age calculated from it in years, months and days. In addition, you can see registrars, statuses and name servers – without replacing missing data with estimates.
Start of test
Their results
RDAP as structured access to domain data
RDAP provides registration information in a machine-readable format. The checker determines the responsible service via the IANA directory and queries the specified domain there. The visible source makes it clear from which registry the answer comes. Enter the registered domain, for example, example.org; a subdomain such as www.example.org usually does not have its own domain object.
What information can be included in the result
Depending on the registry, the registration date, last time of change, expiration date, registrar, status codes and name servers appear. Not every service publishes the same fields. Missing data are not estimated. In particular, a registry expiration date is not a reliable termination date for your hosting contract; your registrar is decisive for contract periods.
Correctly classify domain age and status
The age is calculated only at a unique, valid registration date, relative to the query day in UTC. Missing, future or conflicting data remains open. Last change and archive date are not a replacement. An early registration time does not automatically describe the age of the current website or its content. In the meantime, a domain may have changed hands or been used differently. Similarly, a transfer lock is not necessarily a problem: it can be deliberately set up. Use status and dates for technical administration, not as a blanket proof of quality or ranking.
No binding availability information
An RDAP error, a 404 response or a missing IANA endpoint does not mean that a domain is registrable. Some names are reserved, managed differently or are temporarily unavailable via the service. Availability and purchase conditions must be checked with the registrar. The basis of the service search is IANA-RDAP directory for DNS.
Example of classification
A registrar and a registration date have been delivered, the expiration date is missing: the checker shows the existing data and does not supplement a presumed end date.
Frequent questions
Does the check show the name of the domain owner?
No. Personal owner data will not be issued. Publication is also often restricted by the registry.
Why does a subdomain not work?
Registration data usually refers to the registered domain. www or other subdomains usually do not have their own RDAP object.
Is a domain without hits free?
This cannot be deduced from this. A binding availability check takes place at the registrar.
Why is the domain age missing for some. De-Domains?
Depending on the registry, RDAP publishes fields other than the web query. If the registration date is missing, no age is estimated. Then check the DENIC web query.