PulseSub

PulseSub is a fast Python CLI tool to check which subdomains are live and reachable.
It’s ideal for bug bounty hunters, penetration testers, and anyone needing to filter a large list of subdomains.

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Features

• Accepts single domains, files, or piped input.
• Fast, concurrent checking using multiprocessing.
• Outputs live subdomains with their IP and HTTP status code.
• CLI flags for flexible usage and output customization.

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Requirements

• Python 3.x
• Python modules: requests, multiprocessing, socket (all standard except requests)
• A list of subdomains (e.g., subdomains.txt)

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Installation

pip install requests

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Usage

1. Single Domain

python3 pulsesub.py -t example.com

2. From a File

python3 pulsesub.py -f subdomains.txt

3. Via Pipe

cat subdomains.txt | python3 pulsesub.py

4. Custom Output File & Concurrency

python3 pulsesub.py -f subdomains.txt -o results.csv -c 8

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Example Output

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License

(c) 2025 Aayush Samriya
MIT License

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Author

github.com/MAAYTHM