Look up port 443
query = 443
Result: 443 - HTTPS - Web (TCP)
Port Number Lookup
Enter a port number to find the service, or a service name to find the port. Includes security recommendations for each port.
Enter your values and press Calculate — the result appears here.
Worked examples
Find MySQL port
query = MySQL
Result: 3306 - MySQL - Database (TCP)
Frequently asked questions
Why is port 22 important?
Port 22 is SSH (Secure Shell). It is the primary remote access protocol. Always use key-based authentication and disable password login.
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