Subdomain Enumeration Tool

Enter a domain name without protocol (http/https)

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Subdomain Enumeration

Subdomain enumeration is a technique used to discover subdomains of a target domain. This tool helps security researchers, penetration testers, and network administrators identify potential entry points and attack surfaces.

Subdomains can reveal:

  • Development and staging environments
  • Internal services and applications
  • Third-party integrations and APIs
  • Forgotten or abandoned services

How It Works

This tool queries various sources to discover subdomains:

Source Description
Certificate Transparency Logs SSL/TLS certificates often contain subdomain information
DNS Records Active DNS records and zone transfers
Search Engines Indexed subdomains from web crawlers

FAQs

What sources are used?
Certificate Transparency logs and other public sources are queried to discover subdomains.
Are results exhaustive?
Enumeration is best‑effort; visibility depends on public data. New entries appear as CT logs update.
Any rate limits?
Excessive queries may be rate‑limited. Use responsibly and cache/export results for later analysis.
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