🌐 Subdomain Finder (using c99)

This Python script scraps subdomains from c99.nl subdomain finder for a given domain.
It automatically checks scan pages (by date) until it finds results, filtering out irrelevant entries (like whois check, download json, download csv, IP addresses, etc.).

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🚀 Features

• Rotates User-Agents for requests.
• Goes back in time (previous days) until subdomains are found.
• Filters out unwanted or invalid results.
• Returns unique subdomains for the target domain.

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📦 Requirements

Install dependencies with pip:

pip install requests beautifulsoup4

Usage

python3 c99.py example.com