Online port scanner. Scan an IP address for open ports using Nmap port scanner.
- Online port scanner. Verify if a specific TCP or UDP port is open or closed on any domain or IP address with this free online tool. View open TCP ports, check what services are running on your server, test your firewall with this online TCP port scanner. Scan any domain or IP address for open, closed, or filtered ports using TCP or UDP protocols. Port checker is a utility used to identify your external IP address and detect open ports on your connection. Learn how to use our port checker tool, what ports are, and how to troubleshoot common issues. Enter your IP/Host and port to check, or use common port numbers for FTP, SSH, HTTP and more. . Jul 9, 2025 ยท Use Nmap Online portscan to find open TCP and UDP ports and services on target servers. This tool is useful for finding out if your port forwarding is setup correctly or if your server applications are being blocked by a firewall. Scan an IP address for open ports using Nmap port scanner. umv gvh lhu rjuw fwm lheedti lfwj dwcx aqmkc krnhzh