3netCalc is a j2me java subnet calculator midlet for the mobile phone.
Input an ip address and subnet mask/mask bits/number of hosts wanted and it will display the hosts, network address, broadcast address, 1st IP address , last IP address, and inverse subnet mask.
It has menus for alternative input of details using the navigation keys.
Example
Installation
Installation:
subnetcalculator.zip
Extract the files into a directory.
Downloading from a PC
Use your device connectivity software to install the downloaded files onto your device using a cable or an infra-red link - see device manual for details.
You can also run the applications using a MIDP emulator, such as the J2ME Wireless Toolkit found on:
http://java.sun.com/products/j2mewtoolkit/download.html
i.e. For Nokia 6310i use "Nokia Installer" on the Nokia Data Suite
These Midlets can also be directly installed from http://www.midletcentral.com/:
i.e. http://www.midletcentral.com/support/nokia_6310i.jsp
Some Supported Phones:
Motorola A008, Motorola i50x, Motorola i85s, Motorola v60i, Motorola v66i, Nokia 6310i, Nokia 3410, Nokia 7210, Nokia 7650, Nokia 9210, Siemens SL45i, Trium Eclipse, Any phone or PDA capable of running Java Midlets.
3net Calc 
