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Open Port Checker — Test If a Port Is Open Online

Check whether a TCP or UDP port on any server, router, or website is open, closed, or filtered — instantly, from your browser, with results from 300+ worldwide locations. No installation, signup, or credit card required.

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  • All check locations in the report
  • TLS, headers & timing details
  • Scheduled reports
  • REST API access
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Why is a port tester tool important

Every port’s status is important for functionality and security of the wide variety of web-related services and port scan tool, our Host-Tracker team provides, will help in solving a lot of connectivity and software stability and usability issues. Our ports checker online will allow you to save time on checking the status of your ports.

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How our port scanner works

HostTracker’s online check port tool is working with TCP and UDP protocols to achieve a more precise result. When you want to check if a server port open - our tool sends a data packet to its destination - port on a specified server. After the online port scan is complete - you get the result with port status.

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Advantages of our port scanner tool

It is possible to check port server status from several locations to gather maximum information about connectivity. In addition port open check online is capable of running the check utility from a variety of network nodes around the globe. Host-Tracker’s port check service provides a fully user-friendly interface and report.

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More about port checking — open vs closed vs filtered, mail ports, and common questions.

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