DomainIntel is a free domain intelligence tool for developers and security teams. From a single report you can run WHOIS and RDAP lookups, DNS-record checks, SSL certificate inspection, SPF and DMARC validation, security-header audits, and blacklist and reputation checks, so you can assess a domain's setup and hygiene in one place instead of stitching together several tools. It's also available as an MCP server, a CLI, and a GitHub Action, so the same checks can run inside AI agents and CI pipelines. Built for developers, security teams, and anyone investigating or monitoring domains.