Premium Member Database last update: Sunday, February 19, 2017 18:02:52 GMT-0700

CIDR Network Calculator for Classless Networks

Instructions: Enter a valid IPv4 address, select a CIDR/Netmask and then click submit.

The form will output the following: IP address, CIDR Network (Route), network and broadcast addresess, Network/CIDR, Network/Netmask, Network/Cisco, bit mask, hosts bits, Netmask. number of subnets, number of hosts and the first and last host nodes within the network.