Domain Subfinder using Python

By Suresh Mahto

Domain Subfinder Python script leveraging crt.sh API to find subdomains of a domain, aiding in reconnaissance for security assessments and bug bounty programs.

Domain Subfinder utilizes the crt.sh API to discover subdomains of a specified domain. It constructs a query URL targeting crt.sh's search functionality for subdomains related to the given domain. Upon receiving the response, the script parses the JSON data, extracting subdomain entries. It then stores these subdomains in a set, filtering out duplicates. Finally, it prints the discovered subdomains. crt.sh is a widely used tool for subdomain enumeration, offering insights into domain infrastructure. However, it's crucial to respect terms of service and use such reconnaissance tools ethically and responsibly.

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