WHOIS is an internet service that provides detailed information about a specific domain name. It's like a "yellow pages" for the internet, where you can lookup who owns a domain, their contact information, when it was registered, when it expires, and more
A WHOIS lookup will retrieve this information from the database, presenting you with details about the domain. But remember, this data is as accurate as the information given at the time of registration If you want to purchase a domain but it's already taken, WHOIS can help you find out who owns it, potentially opening up negotiations for its acquisition
REGISTERED - the domain is already registered. DELEGATED - The domain is delegated, i.e. DNS servers are configured for it. NOT DELEGATED - the domain is not delegated, i.e. no DNS servers are configured for it. UNVERIFIED - the data of the domain owner has not been verified. VERIFIED - the data of the domain owner has been verified. ok - normal state of the domain, no special statuses. clientTransferProhibited - the current registrar has banned the transfer of the domain to another registrar. pendingTransfer - domain in the process of transfer to another registrar (usually transfer lasts 5 full days). redemptionPeriod - the period of the expired domain, when the domain can not be renewed normally, but can be restored at a significantly higher cost (contact your current registrar for details). pendingDelete - the domain is in the process of being removed from the registry. clientHold - the domain has been removed from the registrar. serverHold - the domain is removed from delegation by the registry. autoRenewPeriod - domain was automatically renewed by the registry, such renewal may be canceled at the initiative of the registrar or in case of registrar change. Often this status is assigned to domains that were not renewed before the registration period expired.