133  subfinder(1) - Kailash Tool Reference

133.1 subfinder

subfinder - Subdomain discovery tool — overlay pin (pkgs/subfinder, KA-02.3).

Layer CLASSIC
Category c-01-information-gathering
Safety class safe
Licence MIT
Upstream github.com/projectdiscovery/subfinder

133.1.1 NAME

subfinder - Subdomain discovery tool — overlay pin (pkgs/subfinder, KA-02.3).

133.1.2 SYNOPSIS & usage

Derived from the upstream README at generation time; verify against --help where the tool is installed.

subfinder -h
go install -v github.com/projectdiscovery/subfinder/v2/cmd/subfinder@latest

133.1.3 DESCRIPTION (upstream)

subfinder is a subdomain discovery tool that returns valid subdomains for websites, using passive online sources. It has a simple, modular architecture and is optimized for speed. subfinder is built for doing one thing only - passive subdomain enumeration, and it does that very well. We have made it to comply with all the used passive source licenses and usage restrictions. The passive model guarantees speed and stealthiness that can be leveraged by both penetration testers and bug bounty hunters alike. - Fast and powerful resolution and wildcard elimination modules - Curated passive sources to maximize results - Multiple output formats supported (JSON, file, stdout) - Optimized for

133.1.4 CONFIGURATION (detected)

Config-surface markers detected in the upstream README (7 matches, e.g. config.yaml, provider-config.yaml). A full config reference page for this tool is queued under the config-page policy — this line is the detection record, not the page.

133.1.5 SEE ALSO

ref: v2.17.0-unstable-2026-10-08 - verified 2026-10-14