Domain Profiler by Hacker Target is a reconnaissance tool designed for attack surface discovery. It utilizes Open Source Intelligence (OSINT) techniques to passively discover an organization's Internet footprint. Domain Profiler performs automated reconnaissance against a domain name, providing a quick overview of an organization's Internet-facing infrastructure within minutes. It collects standard DNS records through lookups, including Domain Servers (NS Records) and Mail Servers (MX Records), and gathers sub-domains through a host record search API.