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Check domain name availability instantly and discover subdomains with powerful API endpoints. Verify if domains are available for registration, process bulk domain checks for multiple names simultaneously, and get intelligent domain name suggestions when your preferred choice is taken. Whether you're building domain registration platforms, marketplace tools, brand monitoring systems, or domain investment applications, these endpoints streamline domain research and availability checking with fast, reliable results that help users find the perfect domain name quickly.
Beyond availability checks, discover all subdomains associated with any domain for comprehensive DNS reconnaissance and security analysis. The subdomain lookup endpoint reveals the complete subdomain structure, helping security teams map attack surfaces, developers understand infrastructure layouts, and SEO specialists analyze site architecture. Get creative domain suggestions based on keywords and availability, perfect for helping users find alternatives when their first choice is registered. The bulk availability endpoint handles hundreds of domain checks in one request, ideal for domain investors analyzing portfolios, businesses researching brand variations, or platforms offering domain search functionality to users at scale.