WHOIS Lookup – query domain information
Retrieve structured domain information such as registrar, status, name servers and lifecycle dates to assess ownership, expiry and delegation risks.
What does a WHOIS lookup show?
A WHOIS lookup shows registration information such as registrar, domain status, important dates and name servers.
RDAP vs. WHOIS
RDAP is the standardized successor to classic WHOIS and returns machine-readable JSON that is easier to validate and localize.
Domain status codes explained
EPP statuses such as clientTransferProhibited or redemptionPeriod describe locks, protections or lifecycle phases of a domain.
Monitoring domain expiry
Expiry dates are business-critical because an expired domain can break website, email and SEO signals.
FAQ
Frequently asked questions
What is RDAP?
RDAP stands for Registration Data Access Protocol and provides structured access to domain registration data.
What does clientTransferProhibited mean?
It is an EPP status that blocks transfers to another registrar, usually as protection against unauthorized transfers.
How can I see when a domain expires?
The expiry date is usually exposed as an expiration, expires or registry-expiry event in RDAP/WHOIS data.
Why are WHOIS details sometimes hidden?
Privacy laws such as GDPR often redact personal registrant data while technical information remains visible.
Guide & best practices
WHOIS Lookup – query domain information
Retrieve structured domain information such as registrar, status, name servers and lifecycle dates to assess ownership, expiry and delegation risks.
What does a WHOIS lookup show?
A WHOIS lookup shows registration information such as registrar, domain status, important dates and name servers.
RDAP vs. WHOIS
RDAP is the standardized successor to classic WHOIS and returns machine-readable JSON that is easier to validate and localize.
Domain status codes explained
EPP statuses such as clientTransferProhibited or redemptionPeriod describe locks, protections or lifecycle phases of a domain.
Monitoring domain expiry
Expiry dates are business-critical because an expired domain can break website, email and SEO signals.
Frequently asked questions
What is RDAP?
RDAP stands for Registration Data Access Protocol and provides structured access to domain registration data.
What does clientTransferProhibited mean?
It is an EPP status that blocks transfers to another registrar, usually as protection against unauthorized transfers.
How can I see when a domain expires?
The expiry date is usually exposed as an expiration, expires or registry-expiry event in RDAP/WHOIS data.
Why are WHOIS details sometimes hidden?
Privacy laws such as GDPR often redact personal registrant data while technical information remains visible.