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Port Checker is an online tool designed for checking open ports on remote hosts and networks. It enables users to verify port status—whether ports are open, closed, or filtered—by scanning specific IP addresses or hostnames, supporting both TCP port scanning and UDP port scanning in real time.
Key features include quick scans of individual ports, port ranges, or multiple endpoints, with results showing response times, connected services, and basic network details. The tool identifies open TCP ports and open UDP ports, helping network administrators, firewall managers, and IT professionals assess connectivity, detect potential vulnerabilities, and troubleshoot issues like blocked ports or service availability.
Users can perform port checks from a web browser without installing software, making it suitable for tasks such as validating firewall rules, monitoring server accessibility, or conducting basic network discovery. It provides clear outputs on port scanner results, including status indicators and details on running services where applicable, streamlining workflows for online port scanner needs.
Website: port-checker.net
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