domain-intel

You can gather passive domain OSINT data without API keys by using a skill that automates subdomain discovery, SSL certificate inspection, WHOIS retrieval, and DNS resolution using only the Python standard library. It outputs structured JSON for single or bulk domain investigations.

Certificate log subdomain discovery works by querying SSL certificate records to identify associated subdomains across target domains. When applied to bulk domain analysis, this passive method maps a domain's external footprint and outputs structured JSON without needing external API keys.

Yes, you can check SSL certificate expiry and resolve DNS records (A, AAAA, MX, NS, TXT, CNAME) for multiple domains in bulk. The process automates these checks passively and returns the results in a structured JSON format.

The best way to monitor domain security posture and brand abuse passively is to automate the collection of WHOIS status, SSL certificates, and subdomain signals across your domains. This approach uses the Python standard library to output structured JSON for ongoing analysis.

No, you do not need external API keys or additional dependencies to run subdomain discovery and WHOIS retrieval. The skill relies entirely on the Python standard library to fetch and structure domain intelligence data.

Passive OSINT techniques are preferred for domain intelligence because they gather subdomains, DNS records, and SSL data without directly probing or alerting the target infrastructure. This method uses standard library queries to safely build a security posture profile.