Subdomain Scanner
Scan and discover all subdomains of any domain. A powerful tool for security analysis, SEO audits, and understanding website infrastructure.
What is a Subdomain Scanner?
A subdomain scanner is a tool that discovers and lists all the subdomains associated with a given domain name. Subdomains are prefixes added to a root domain (e.g., mail.example.com, blog.example.com) and are commonly used to organize different sections of a website.
How Does a Subdomain Scanner Work?
A subdomain scanner works by querying various data sources such as DNS records, certificate transparency logs, search engines, and public databases to enumerate subdomains associated with a target domain.
Why is Subdomain Scanning Important?
Subdomain scanning helps security professionals identify potential attack surfaces, forgotten or misconfigured services, and shadow IT assets. For webmasters, it provides insight into the complete structure of their web presence.