A Port Scanner will automatically check the latency of the host to be scanned when a scan commences. This check determines the maximum time time for each port to be scanned so the speed depends on the delay determined during this set up time. A list of recent hosts/IP addresses is maintained so it is very easy to re-scan a previously entered host.
When A Port Scanner has completed a scan, the resulting list shows all the open ports within the port range selected. Additionally, there is a quick reference section showing relevant details from the completed scan.
The way to ping and check ports, just easy to use, plus its doge
Great little free tool does what it says and worth the download