About SubDomains Finder
Open Source Intelligence for Domain Discovery
What We Do
SubDomains Finder is an OSINT (Open Source Intelligence) based tool designed to help security researchers, penetration testers, and IT professionals discover subdomains associated with any given domain.
Our platform aggregates and presents publicly available information from the internet, providing you with comprehensive insights into a domain's infrastructure without performing any active scanning or intrusive reconnaissance.
How It Works
Unlike traditional subdomain enumeration tools that actively probe target servers, SubDomains Finder operates entirely on passive data collection. We gather information from:
- Public DNS records and certificate transparency logs
- Historical internet scan databases (Shodan, Censys, etc.)
- Web archives and cached data from search engines
- Public WHOIS and ASN information
Key Points
No Active Scanning
We never send requests to target domains
100% Passive
All data comes from public sources
Legal & Ethical
Using only publicly available information
Cached Results
Fast responses from our cached database
Who Uses This Tool?
SubDomains Finder is designed for legitimate security research purposes:
- Security Researchers – Conducting authorized assessments
- Bug Bounty Hunters – Discovering attack surface for bug bounty programs
- IT Administrators – Monitoring their own organization's exposure
- Penetration Testers – Reconnaissance phase of authorized engagements