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Scan a server or IP address for open ports to identify running services and potential security vulnerabilities.
Our Open Port Scanner is a network diagnostic tool that checks a server or IP address for open TCP ports. It helps administrators and security professionals identify which services are running (like web servers, mail servers, or databases) and verify if firewalls are correctly configured. By sending connection requests to common ports, it determines if they are "Open" (accepting connections), "Closed" (rejecting connections), or "Filtered" (dropped by a firewall). This is an essential first step in securing any network infrastructure.
Enter the domain name or IP address you want to scanSelect whether to scan common ports or a specific rangeOur server attempts to establish a TCP connection to each portBased on the server's response (ACK, RST, or Timeout), we determine the statusResults are displayed in a clear list showing the service on each portSecurity recommendations are provided for open insecure ports
Discover unintended open ports, verify firewall rules, and identify outdated services.
Confirm web server availability, troubleshoot email connectivity, and debug application issues.
Test ISP port blocking, verify VPN port forwarding, and check game server connectivity.
We don't log or store any IP addresses or search queries
All data is transmitted over encrypted HTTPS
Results are generated in real-time, not from a database
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