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Subdomain Exposure Scanner
Discover active subdomains of your domain using brute-force of 80+ common names and certificate transparency log analysis. Flags admin panels, dev environments, and internal services exposed to the public internet.
Scanning subdomains via brute-force and cert transparency… (10–30s)
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Why Subdomain Exposure Matters
Subdomains like dev.yourcompany.com or admin.yourcompany.com are often set up for internal use but left exposed to the internet. Attackers actively scan for these to find login pages, staging databases, and internal tools that weren't designed to be public.
Certificate transparency logs — public databases of every SSL certificate ever issued — are a gold mine for attackers to enumerate your subdomains. This tool uses the same technique to show you what they can see.