How to Scrape Domain and WHOIS Data (Free APIs)

Domain data is valuable for sales, security, and SEO teams. Free WHOIS APIs RDAP (Official, Free) async function whoisLookup ( domain ) { const res = await fetch ( `https://rdap.org/domain/ ${ domain } ` ); return res . json (); } const data = await whoisLookup ( " example.com " ); ip-api.com (IP Geolocation, Free) https://ip-api.com/json/example.com SecurityTrails (Free Tier) DNS history, subdomains, WHOIS records. Data Available Domain registration date Expiry date Registrar Nameservers DNS records (A, MX, TXT) IP address and hosting provider SSL certificate info Use Cases Lead generation — find domains about to expire Competitive intelligence — hosting and tech stack Security research — subdomain enumeration SEO analysis — domain age and authority Brand protection — similar domain monitoring Resources SEO Audit Tool Email Finder Complete Index Need domain or WHOIS data? $20. Email: Spinov001@gmail.com | Hire me