Batch IP Resolver

Resolve IP addresses for a list of domains in bulk and save results to a timestamped TSV file.

Features

• Batch input: read domains from input.txt (one per line)
• Deduplicates: removes duplicate domains while preserving order
• Robust resolution: strips http/https prefixes; handles errors gracefully
• Timestamped output: writes to results_YYYYMMDD.txt (tab-separated with header)

Requirements

• Python 3.11+ (project targets 3.11 by default)
  No external dependencies required.

Quickstart (CLI)

1. Clone the repo
2. (Optional) Create and activate a virtual environment
3. Create an input.txt (or copy input.sample.txt to input.txt)
4. Run the script

Windows PowerShell:

python -m venv .venv
.\.venv\Scripts\Activate.ps1
copy input.sample.txt input.txt
python ip_resolver.py

macOS/Linux:

python3 -m venv .venv
source .venv/bin/activate
cp input.sample.txt input.txt
python ip_resolver.py

Output will be saved as a file like results_20250528.txt in the project root.

Web UI

You can also use a minimal web interface.

Start the app:

python app.py

Then open http://127.0.0.1:5000 in your browser. Paste domains or upload a .txt file, then click Resolve. You can also download results as a TSV file.

Docker

Build and run locally:

docker build -t batch-ip-resolver .
docker run -p 5000:5000 --rm batch-ip-resolver

Visit http://127.0.0.1:5000.

Environment variables:

• PORT: port to bind (default 5000)
• DEBUG: set to true to enable Flask debug when running via python app.py

Input format

• One domain per line
• You can include http:// or https:// prefixes; they will be stripped automatically

Example (input.sample.txt):

example.com
openai.com
python.org

License

This project is licensed under the MIT License. See LICENSE for details.