WHOIS Domain Lookup API — Check Domain Registration and Ownership Details
Look up WHOIS information for any domain including registrar, registration dates, name servers, and owner contact. Free API.
What is WHOIS Lookup?
WHOIS lookup queries domain registration databases to retrieve information about domain ownership, registrar, registration and expiration dates, name servers, and domain status codes. Useful for domain research, competitor analysis, and domain purchase evaluation.
How to Use It
Call GET /api/v1/whois?domain=example.com. Returns { domain: string, registrar: string, creation_date: string, expiration_date: string, updated_date: string, name_servers: string[], status: string[], raw: string }.
Try it live
Test this endpoint in the interactive console
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Frequently Asked Questions
Are WHOIS results always available?
Many domains use WHOIS privacy protection that masks owner contact information. Basic registration data (registrar, dates, nameservers) is always available.