This simple tool helps you extract domains from certs using Subject Alternative Names (SANs)

This script was inspired by the awesome work done in cero by glebarez and was created in Python just for fun! The simplicity and focus of cero motivated me to build a tool specifically for extracting SANs from SSL certificates. Check it out for more great SSL certificate insights!

• Python 3.x

Clone the repo and navigate to the project directory:

git clone https://github.com/girorme/sslsans.git
cd sslsans

To fetch the SANs for a given host (e.g., example.com), run:

python3 sslsans.py --hostname https://example.com

By default, it connects over port 443, but you can specify a different port if needed:

python3 sslsans.py --hostname https://example.com --port 8443

You can specify the output format as either text or json.

python3 sslsans.py --hostname https://example.com --output text

python3 sslsans.py --hostname https://example.com --output json

example.com
www.example.com
api.example.com

["example.com", "www.example.com", "api.example.com"]

LICENSE

MIT