The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
Net Calc calculates various parameters of an IPv4 network. Just enter a valid IP address and the length of the subnet. The following values are calculated:: -Net Mask -Net Address -Broadcast Address -Minimum and Maximum Address of a Node -Maximum Number of Nodes in the Net -Maximum Number of possible Subnets If one input parameter (IP address and/or subnet) is changed, all other parameters will be re-calculated. If the input parameters follow a certain scheme, a textual description and the defining RFC are displayed.