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Port Scanner with Nmap. Find open ports and running services (incl. versions), and do OS fingerprinting in a single TCP port check. Inspect Top 100 TCP and UDP ports for free or get a paid plan to automate and schedule extensive custom scans for even more ports.
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.
Test and verify servers, firewalls and network perimeters with Nmap Online providing the most accurate port status of a systems Internet footprint. The Port.Tools works well on both desktop and mobile browser.
Free Port Scan to check any IP address and test 10 common TCP ports with Nmap version detection (-sV) enabled. Once you see how easy it is grab a membership and get immediate full access.
The open port scanner checks if a specific port is open and accessible on a target system. For example, if you want to see if a web server is reachable, you would check if port 80 (HTTP) or port 443 (HTTPS) is open.
Free online port scanner using online nmap's advanced port scanning tool to detect services including down and up hosts. Am authorized to scan this host/network Nmap tcp port scanning
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.