IPv4/v6 CIDR Calculator

(IPv4 and IPv6) CIDR Calculator Tools.

This app provides a networking utility for calculating CIDR subnets on IPv4 or IPv6 addresses.

CIDR (Classless Inter-Domain Routing) calculator computes the following for given IPv4 or IPv6 address and prefix length (using the slider) :-

1) Network Address

2) Broadcast Address

3) Netmask

4) Hostmask

5) Number of Hosts

6) Host Range Start

7) Host Range End

You can also change the color for text and background (including Dark Mode).