Domain WHOIS data is essential for many workflows: checking domain expiry before renewal, detecting ownership changes, finding nameservers, or monitoring competitor domains. Most WHOIS lookups require command-line tools, manual queries, or expensive services. I built Domain WHOIS Lookup API — a simple REST endpoint that returns structured WHOIS data for any domain. What it returns Single POST request gives you: Registrar — who registered the domain Creation date — when the domain was registered Expiry date — when it expires (with days-until-expiry counter) Updated date — last update timestamp Nameservers — DNS servers pointing to domain's host Country — registrant country IP address — resolved IP of the domain Status codes — registration status (locked, active, etc) Organization — registrant organization name Quick start Python import requests url = " https://domain-whois-lookup.p.rapidapi.com/whois " headers = { " X-RapidAPI-Key " : " YOUR_KEY " , " Content-Type " : " application/json " } payload = { "…