Subdomain Finder

Discover all subdomains of your domain. Find hidden services, test environments, and forgotten assets.

Free Tool No Registration Fast Search

DNS Records

DNS record analysis

Certificate Transparency

CT logs search

Web Archives

Historical records

Why find subdomains?

What are Subdomains?

A subdomain is a part of a domain that comes before the main domain (e.g., blog.example.com)

Forgotten subdomains often contain vulnerabilities and outdated software

mail.*, api.*, dev.*, staging.*, admin.*, cdn.*