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Columbus Project

Fast subdomain enumeration from CT logs and DNS, API-first

FreeOpen SourceApache-2.0APIWebCLI

Description

API-first subdomain enumeration service that takes a registrable domain and returns its known subdomains, sourced from Certificate Transparency logs and DNS data. Accessible as a REST API returning JSON, a web interface, or via curl with plain-text output; the demo returns hundreds of subdomains for a domain in well under a second.

Tool Chain

Tools that can use this tool's outputs as inputs

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