Subdomain Finder

Discover subdomains of any domain to analyze domain structure, find hidden services, and enhance security testing with comprehensive subdomain enumeration.

Subdomain Discovery
Enter a domain name to discover its subdomains
About Subdomain Discovery

What are Subdomains?

Subdomains are part of a larger domain that can point to different servers or services. They help organize and structure websites and applications.

Common Subdomain Types

  • www: Main website
  • mail: Email services
  • api: API endpoints
  • admin: Administrative interfaces
  • dev/staging: Development environments
  • cdn: Content delivery networks

Security Implications

  • • Subdomains can expose additional attack surfaces
  • • Hidden services may have weaker security
  • • Subdomain takeover vulnerabilities
  • • Information disclosure through subdomains