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You can scan ports for free twice a day for a single IP or hostname. This open port scan we provide on the house checks for the Top 100 TCP and UDP ports and also reports the running services’ versions (-sV is enabled in scan configuration).
Free Port Checker Online - Check Open Ports (TCP & UDP Ports) Simply leverage our port checker, designed to identify open and closed ports. It combines traditional TCP and UDP scanning techniques to ensure 100% accurate results.
Find open ports with our free online port scanner powered by Nmap. Scan up to 100 TCP or UDP ports of your choice, or the top 100 most common ports. Simply enter a target IP address, specify the protocol and ports to be scanned, and let our port scanner get to work.
Online Port Scanner is a free online tool for scanning most common ports on your computer, useful when testing port forwarding setup or security purpose in general.
Nmap is a free and open-source network scanner. Nmap is used to discover hosts and services on a computer network by sending packets and analyzing the responses. Nmap provides a number of features for probing computer networks, including host discovery and service and operating system detection.
Use our port checker to find the status of any port associated with an IP address or domain. This port scanner checks if a port on your system is open or closed
Use Nmap to find open ports on Internet facing systems with this online port scanner. Test servers, firewalls and network perimeters with Nmap Online providing the most accurate port status of a systems Internet footprint. It is simply the easiest way to perform an external port scan.