OSINT
subfinder
Fast passive subdomain discovery by ProjectDiscovery.
Authorized testing only. Practice on systems you own, isolated labs, or targets with written permission. Unauthorized access is illegal.
When
Quick passive subdomain collection before active scanning.
How
Provide domain(s), optionally configure API keys in config.yaml.
Why
Speed + reliability; perfect pipeline first stage.
Commands & usage
subfinder -d example.com -o subs.txt
subfinder -dL domains.txt -all -o all-subs.txt
Commands are educational examples. Adapt hosts, paths, and rates to your authorized scope.
Tags
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