You can enter an IP Address using shorthand notation:
Or using a subnet mask:
If you are practicing then you can fill out the boxes on
your own. When you press the Show Answers button any boxes
that you have attempted will either turn green or red
depending on if you answered correctly or not. If the box is
empty then the correct answer will be shown in the box.
Therefore, if you are having trouble solving for a box you
can clear it and click the Show Answers button to see what
answer the calculator was looking for.
The drop down menu will fill in the binary
representation of whatever you select from the drop-down.
The Show Colors button is able to help you solve
without giving away all the answers.
Subnetting Calculator v1.1
Developed by Jacob Conrads
Contact me at [email protected]
Feel free to modify and/or distribute.
Javascript is not able to run. You need to allow your browser to run scripts in order
for the Subnetting Calculator to work. There should be a warning on the page with a button to press.
The reason for this warning is because you are running the file locally instead of from a web server.
The JavaScript is harmless and the source code is commented and easy to understand.