DNSdumpster.com is a FREE domain research tool that can discover hosts related to a domain. Finding visible hosts from the attackers perspective is an important part of the security assessment process.
Head over to HackerTarget.com for access to the domain profiler tool. Enumerate a domain and pull back up to 40K subdomains, results are available in a XLS for easy reference. Get the edge whether you are chasing bug bounties or red teaming a new target. Membership includes 9 vulnerabiltiy scanning tools.
Trusted tools hosted for remote easy access.
Map an organizations attack surface with a virtual dumpster dive* of the DNS records associated with the target organization.
*DUMPSTER DIVING: The practice of sifting refuse from an office or technical installation to extract confidential data, especially security-compromising information.