Premium Member Database last update: Tuesday, December 18, 2018 14:03:20 GMT-0700

CIDR Network Calculator

Country IP Blocks is pleased to annouce the release of its new CIDR Network Calculator.

Enter a legal IPv4 address and select a CIDR/Netmask from the dropdown and submit the data.

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.

Please give it a try by clicking here.