How can I ping a range of IP addresses simultaneously [closed]

I have a bunch of machines on an IP address range which I want to ping simultaneously as a quick and dirty way of telling which ones are switched on. What (free) software can I use to do this?

I'm using Windows Vista.


The quickest way is to use Angry IP Scanner

alt text

I use it for the same way you want to!


Nmap is available for Windows:

# nmap -sP 10.0.10.1-100

I've used this command

for %%i in 200 to 254 do ping 10.1.1.%%i 

in a batch file for a similar reason


Free IP Scanner 1.6

Here is the range of IP addresses as you can notice in:

Alt text