A crucial stage in reconnaissance during bug bounty hunting and penetration testing is subdomain enumeration, which helps organisations identify proprietary computer networks and systems.
ShuffleDNS, an open-source tool created by ProjectDiscovery, is expressly designed to rapidly resolve subdomains by merging mass DNS resolution with wordlists.
It can be used with massdns, which is designed expressly for bulk DNS lookup jobs, and supports various other features, including wildcard filtering, custom resolver lists, and stdin input.
The massdns tool can be used with ShuffleDNS to resolve a large number of subdomains quickly, aiding in the identification of vulnerabilities and the assessment of organisational networks.