The subnet calculator helps you design networks by taking an IP address and network mask and returning information such as network, broadcast address, and host range.
One of a set of tools we're offering as a way of saying thank you for being a part of the community.
Design-time preview tab
Component tray for design-time work with .NET data providers
Enhanced Report Explorer
Design-time support for custom parameters
Design-time unbound fields
http://www.componentsource.com/products/activereports-net/index.html