IPv4/IPv6 subnet calculator and hierarchical IPv6 addressing plan builder
This is the online version of GestióIPv3's embedded subnet calculator. GestióIP is a free, web-based IP address management software.
To calculate an IP address select the IP version, introduce an IP address, choose a bitmask/prefix length and click "calculate".
The subnet calculator can also be used as IP address converter. It accepts the following IP address formats as input: dot-decimal notation (IPv4), colon-hexadecimal notation (IPv6), binary, integer, hexadecimal.
The online version of the subnet calculator includes an advanced IPv6 addressing plan builder which permits to create an organization specific hierarchical IPv6 addressing plan. Read more...
Suggestions, comments, bugs: mail to contact@gestioip.net