Subdomain Finder

Subdomain enumeration is a crucial part of reconnaissance in security testing. This tool uses DNS queries to discover subdomains that may not be immediately visible.

How it works: The tool queries DNS servers for common subdomain patterns (www, mail, api, dev, etc.) and returns any that resolve to valid addresses.

• Discovers publicly accessible subdomains
• Identifies hidden services and infrastructure
• Maps attack surface for security assessments
• Useful for bug bounty and penetration testing

For authorized security testing only. Use responsibly.

This tool performs DNS lookups using public DNS resolvers. No queries are logged or stored beyond daily usage limits.