Question : IP addresses currently in use

looking for a web based(inexpensive) tool to show all currently used IP addresses on a given segment.

I have nearly 100 segments so a tool that would span segments would be best..

Answer : IP addresses currently in use

Softperfect network scanner is a great tool, finds MAC addresses, NIC vendors, hostnames, open ports, and even shared folders for security audit purposes.  And it's free, and they have a portable version, and it's ok to donate to my awesomeness through paypal at [email protected]om.

http://www.softperfect.com/products/networkscanner/