From Domain Name to Company Intel: Building an Enrichment API With Zero External APIs

Give me a domain name. I'll give you the company's tech stack, social profiles, contact emails, WHOIS history, DNS records, and email provider — all from first principles, no Clearbit required. The $99/Month Problem Company enrichment APIs are everywhere. Clearbit, Apollo, ZoomInfo, Hunter.io. They charge $99-499/month. But most of that data is publicly available — in HTML, DNS records, WHOIS registration, and SSL certificates. So I built my own. Zero external API calls. Just Node.js, DNS lookups, and clever HTML parsing. What You Get From a Single Domain enrichCompany("stripe.com") returns: { "company_name" : "Stripe" , "technologies" : [ "React" , "Next.js" , "AWS" , "Stripe" , "Google Workspace" ], "social_profiles" : { "twitter" : { "handle" : "stripe" }, "linkedin" : { "handle" : "stripe" }, "github" : { "handle" : "stripe" } }, "contact" : { "emails" : [ "jane.diaz@stripe.com" ] }, "domain_info" : { "age" : "30y 6m" , "registrar" : "Safenames Ltd" }, "dns" : { "mx" : [ "aspmx