How do I check if a port is open on a server?

Enter the hostname or IP address and port number in Toollo's port checker. It will probe the port and report whether it's open, closed, or filtered within seconds.

What ports can I check?

You can check any TCP port from 1 to 65535. Common ports to check include 80 (HTTP), 443 (HTTPS), 22 (SSH), 3306 (MySQL), and 5432 (PostgreSQL).

Is the port checker tool free?

Yes, Toollo's port checker is completely free with no limits. You can check any number of ports on any publicly accessible server without signing up.

Port Checker

Check if a port is open

Hostname

Port

Common Ports:

About this tool

This tool attempts to connect to the specified host and port from your browser. Due to browser security restrictions, only HTTP/HTTPS ports can be reliably checked. For non-HTTP ports (SSH, MySQL, etc.), use command-line tools like nmap -p PORT HOST or nc -zv HOST PORT for accurate results.

FAQ

How do I check if a port is open on a server?: Enter the hostname or IP address and port number in Toollo's port checker. It will probe the port and report whether it's open, closed, or filtered within seconds.
What ports can I check?: You can check any TCP port from 1 to 65535. Common ports to check include 80 (HTTP), 443 (HTTPS), 22 (SSH), 3306 (MySQL), and 5432 (PostgreSQL).
Is the port checker tool free?: Yes, Toollo's port checker is completely free with no limits. You can check any number of ports on any publicly accessible server without signing up.