This tool compares the WHOIS information of domains to identify similarities and determine if they likely belong to the same company. It utilizes the python-whois library for fetching WHOIS information and provides a similarity score based on relevant fields.

1. Install dependencies:

   pip install -r requirements.txt

2. Run the script with the following command:

   python whois_check.py -t <threshold> -b <baseline_file> -dl <domain_list_file>

   • -t, --threshold: Threshold for similarity score (default is 1.0, an exact match).
   • -b, --baseline: Baseline domain list file, used to establish a baseline for comparison.
   • -dl, --domain-list: Domain list file with target domains to check if WHOIS is similar to baseline domains.

3. Example:

   python whois_check.py -t 0.8 -b baseline_domains.txt -dl test_domains.txt

• -t, --threshold: Set the threshold for the similarity score. Only print results with a score greater than or equal to the threshold.
• -b, --baseline: Specify the baseline domain list file.
• -dl, --domain-list: Specify the domain list file to check for similarity.
• -sc, --show-score, --no-show-score: Show domains with score, useful for when looking for write similarity score (default: False)

The tool will print the similarity score between each test domain and the baseline domains, based on the specified threshold.

• python-whois
• difflib
• argparse

This project is licensed under the MIT License - see the LICENSE file for details.