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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.
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