ToolsSubdomain Finder

Subdomain Finder

Discover public-facing subdomains and hidden entry points.

Why it matters

Subdomains often expose test environments, legacy services, or forgotten systems.

These overlooked assets are common targets for attackers.

Knowing what is publicly accessible is essential for attack surface awareness.

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example.com

Subdomain Finder

score

Medium

Score

68/100

Signal

Status

Subdomains

67

Active Hosts

18

Exposed Services

5

Unused Entries

7

SSL Issues

2

Sample result · Full report generated after analysis

What this tool does?

Identifies public subdomains by querying certificate transparency logs and domain intelligence databases, then checks basic availability and exposure signals.

Subdomain Discovery
DNS Records
Active Hosts
Exposure Points

What you get?

List of discovered subdomains
Associated IP addresses
HTTP response status
SSL configuration indicators
Page titles and basic metadata

When to use it

Mapping external attack surface
Supporting penetration testing or reconnaissance
Finding forgotten or unmanaged services
Pre-assessment before security engagements

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Attack Surface

What Is an Attack Surface — and Why It Keeps Growing

Your organization’s attack surface expands with every new domain, API, and cloud service.

calendar Jul 14
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