Subdomain Scanner
Analyze and discover hidden subdomains associated with any domain.
Scanning common subdomain records
Ready to Scan
Enter a domain above to perform an automated DNS reconnaissance of common subdomains.
About Subdomain Discovery
What are Subdomains?
A subdomain is a domain that is part of a larger domain. For example, blog.n4r.org and api.n4r.org are subdomains of the root domain n4r.org.
Security Importance
Unused or forgotten subdomains can pose a significant security risk, often leading to Subdomain Takeover vulnerabilities or exposing sensitive development environments.
How our Scanner Works
Our scanner performs passive and active DNS enumeration by checking for common naming conventions (like dev, mail, staging) against the target root domain.
Technical Specs:
- Recursive DNS resolution
- Automated A record checking
- Real-time IP mapping
- Zero-storage privacy model