Which statement describes Sublist3r most accurately?

• A. It is an online service for discovering subdomains and their IPs including network information and their HTTP servers.
• B. It is a Python-based tool that enumerates subdomains of a domain name using multiple search engines.
• C. It is a port scanning toolkit.
• D. It is a password auditing tool.

Answer: (B)

Sublist3r is a Python-based recon tool designed to discover subdomains by querying multiple search engines and sources. It takes a target domain and gathers subdomain names from several engines (and other passive sources), then outputs them for use in further testing. This approach leverages publicly visible information to map an organization’s subdomain surface, often finding more entries than brute-forcing alone and helping you plan the next steps in assessment. It’s not an online service, not a port-scanning toolkit, and not a password auditing tool—its purpose is to enumerate subdomains for reconnaissance.