The tool will search for subdomains of this domain.


About this tool

'Find Subdomains' allows you to discover subdomains of your target domain and increase your attack surface.

Finding subdomains is useful in a penetration test because they point to different applications and indicate different external network ranges used by the target company. For instance, points to IP and points to IP Now you know two different ip ranges possibly owned by your target and you can extend the attack surface.

Furthermore, subdomains sometimes host 'non-public' applications (e.g. test, development, restricted) which are usually less secure than the public applications so they can be the primary attack targets.


  • Domain name: is the target domain (ex.,, etc)
  • Include IP information: this option instructs the tool to do whois queries in order to determine the network owners and country for each IP addresses

How it works

This tool uses multiple techniques to find subdomains such as: DNS zone transfer, DNS enumeration based on a specially chosen wordlist and public search engines queries.