Free Port Scanner Online
Scan common TCP ports on any IP address or domain name instantly. Check your firewall security and detect open ports for free.
How to Use
Enter the target IP address or Domain Name.
Optionally enter specific ports to scan (comma separated), or leave blank to scan the 13 most common web and database ports.
Click the "Start Scan" button.
Our server will attempt to establish a TCP connection to the specified ports.
Review the results to see which ports are Open, Closed, or Filtered (Timeout).
Features
FAQ
Securing a server starts with understanding your network attack surface. Our free online Port Scanner is a vital tool for cybersecurity professionals and DevOps engineers in 2026. Instantly scan a target IP address or hostname to identify open TCP ports that could expose vulnerable services like SSH, FTP, or unauthenticated databases. By sending connection requests directly from our remote servers, you get an accurate external view of your firewall configuration. Our fast scanning engine quickly categorizes ports as Open, Closed, or Filtered (Timeout), allowing you to audit your infrastructure's security posture in seconds without installing complex CLI tools.
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