Censys Subdomain Finder

CLI that enumerates subdomains from certificate transparency logs stored in Censys Search

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Censys Subdomain Finder is an open-source command-line tool that lists a domain's subdomains from the certificate transparency logs indexed by Censys Search. Because it reads certificate records, it surfaces any host that has ever been issued a public SSL certificate, and can save results to a text file. It requires Censys API credentials and is used by penetration testers and researchers mapping an authorised target.

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Full match profile

Behind the summary, Matchbox keeps a richer profile of Censys Subdomain Finder - the signals our matcher actually reads to decide when to surface it. It stays private; claim the listing to see and control it.

Problem & pain-point mapping
Who we surface it to (audience fit)
What it's a strong alternative to
Trust & credibility signals

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