Address Calculator

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The forms below give you the ability to calculate various properties of IP addresses and the texts around them give you some hints about how to use them.

IPv4 Addresses


IPv4 to IPv6 Transitional


IPv6 Addresses and Networks


JS Addr Calc revision 20120802
© Konrad Rosenbaum, 2012
This script is protected under the GNU GPL version 3 or at your option any newer.

Please mail patches to me ( if you have any interesting additions for it.