crt.name
Scripts that query crt.name Certificate Transparency records to find subdomains, with Bash and Python command-line tools for collecting results and saving them to a file.
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Share on XLicense: MIT
Overview
crt.name provides scripts for finding subdomains from Certificate Transparency records through the crt.name API. It offers a Bash wrapper for quick command-line searches and a Python 3 script with optional interactive domain entry. Both can write discovered domains to a file; the Python script also supports quiet output and custom CA bundles for TLS-inspecting proxy environments. Run either tool with a target domain to collect certificate-related subdomain names.
Key features
- Run subdomain searches from Bash or Python using the crt.name API.
- Save discovered domains to a file; the Python script can also print results quietly.
- Use a custom CA bundle with Python when working behind a TLS-inspecting proxy.
Best for
Useful for people who need to enumerate certificate-related subdomains for a domain they are authorized to assess. Choose the Bash wrapper for a quick command-line search or Python for interactive input and additional TLS options.
- Upstream
- deFr0ggy/crt.name
- Fork on GitHub
- Guo-astro/crt.name
- Upstream stars
- 3
- Category
- Security and networking
- License
- MIT
- Forked
- 2026-10-14
- Sync status
- In syncLast synced 2026-10-19
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