domain-intel

Passive domain reconnaissance can be performed by querying certificate transparency logs, WHOIS servers, and DNS-over-HTTPS endpoints. This approach aggregates subdomains, SSL certificate details, and DNS records without triggering active security alerts or requiring external API keys.

Yes, certificate transparency logs are queried directly to discover subdomains. By inspecting SSL certificate data issued for a target domain, you can aggregate multiple passive signals to map infrastructure without sending direct probes to the target.

You can check SSL certificate expiry and WHOIS registration data by querying WHOIS servers and inspecting SSL certificates. This infrastructure auditing process verifies the security posture and registration status of a target domain using standard Python libraries.

Yes, passive OSINT domain reconnaissance operates using standard Python libraries to ensure cross-platform compatibility. The skill functions completely without external dependencies, requiring no API keys or specialized environment setups to query DNS and SSL data.

The best way to check domain availability is by aggregating passive signals from DNS-over-HTTPS endpoints and WHOIS servers. This verifies whether a new project name is available by querying registration data without actively probing the target infrastructure.

Passive reconnaissance should not be used when you need to verify live service responses or detect active port vulnerabilities. It is limited to querying certificate transparency logs and DNS records, and does not send direct requests to the target's servers.