I dunno if it'll do the job you want, but WS Ping Pro (url is for a 30-day shareware) can scan a range of ip's you set, within a timeout you can vary. It won't return specific ping times for each ip, ...

There are three commands you can use to find out what the IP address of a website is, and they’re all easy to use. Let’s see what you’re required to do: Find the IP address using the ping command Find ...

Computers that connect to a TCP/IP network such as the Internet are assigned an IP address, a label consisting of 32-bits and represented in dotted-decimal notation, such as 192.168.0.1. PCs also have ...