Port Scanner Online Test

How to use

1. Enter host
Type your own server’s IP address or domain.

2. Extra ports
Add up to five custom ports (1-65535). Leave blank for default list.

3. Scan
Open ports appear in green – click “Open” to test them in a new tab.

FAQ

Why scan?
High-risk ports like 3306 (MySQL) exposed to the internet invite brute-force attempts and resource abuse.

Close what?
Block or firewall any service you don’t absolutely need accessible from the public web.

Legal notice
Use only on hosts you own or have written permission to test. Unauthorized scanning is prohibited.

Need help?
Visit our Support Center for assistance or suggestions.