domain-intel

You can find subdomains without API keys by using Python stdlib to query certificate transparency logs. This passive OSINT approach identifies subdomains by inspecting SSL certificate SANs, avoiding external service authentication requirements.

Passive domain reconnaissance works by gathering DNS records, WHOIS data, and SSL certificate details without actively scanning the target. It uses standard Python libraries to retrieve public infrastructure information for security audits.

Yes, you can check SSL certificate details using Python stdlib. The process inspects TLS certificates to retrieve expiry dates, cipher suites, Subject Alternative Names (SANs), and issuer information without requiring external API authentication.

The best way to check domain availability is to combine DNS queries, WHOIS lookups, and SSL certificate signals. This multi-signal approach verifies whether a domain is registered by cross-referencing registration records and active infrastructure.

Yes, you can run bulk WHOIS and DNS lookups in parallel. The process executes multiple checks across multiple domains simultaneously, retrieving registration information and DNS records efficiently for competitor analysis or domain research.

During domain intelligence gathering, you can inspect A, AAAA, MX, NS, TXT, and CNAME records. Retrieving these DNS records provides comprehensive visibility into the target domain's routing, mail servers, and name server configuration.