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 TCP/UDP tools and library
About TCP/UDP tools
Find port number
Find port number by word
Check all open ports
IP range port scanner
 Ranges of ports in library
TCP ports list range 0-1024
TCP ports list range 1024-7000
TCP ports list range 7000-20000
TCP ports list range 20000-49151
UDP ports list range 0-1024
UDP ports list range 1024-7000
UDP ports list range 7000-20000
UDP ports list range 20000-49151

Free Online IP range port scanner, scan IP range port, scan hosts

This is free online IP range port scanner, this tool created for scanning of ip's range with some port (scan hosts). Few words about how it's working, range of IP address can be given as two different ip address from one subnetwork (example:ip1 = 123.12.45.50, ip2 = 123.12.45.80), it's easy to see that this ip range consist of 30 ip addresses, tools will scan this 30 address with using numeric port, and you will get list of different hosts with opened port. Do not try to set ip range like 123.12.1.1 - 123.12.255.1, because ip range with 65565 addresses and scan ip range port will huge amount of time. We want to prevent harmful effect from scan and this is reason why we added limits for usage: limit per IP and limit per destination.

This tool using TCP connection scan option, but you can also try to use our "check all open ports" tool for get more options for scan.
You can stop IP range scan with using "stop scan" button without losing results. If you will reload page - all results will disappears.
Starting from IP:example: 91.19.91.10
Last IP in range:example: 91.19.91.170
Port number: or
Timeout (bigger means slower):