Performs network mapping of attack surfaces and external asset discovery using open source information gathering and active reconnaissance techniques.

Can get a lot more subdomain but it’s slow.

Installation

sudo apt-get install amass

Enumerating Subdomains

amass enum -d tesla.com
Subcommand Description
amass intel Discover targets for enumerations
amass enum Perform enumerations and network mapping
amass viz Visualize enumeration results
amass track Track differences between enumerations
amass db Manipulate the Amass graph database