IPv4 CIDR block math. Check if an IPv4 CIDR block is valid and see the IP Range ( Network Address - Broadcast Address ) , the Network Mask, and the number of IP addresses in the block.

Examples: 192.0.2.0/24 , 69.171.240.0/20 , 74.125.38.0/23 , 10.10.10.8/8 , 0.0.0.0/0 , 128.256.3.0/33 , 225.34.3.2/21

For IPv6 CIDR blocks use ipv6/cidr.

More about ip/cidr

           
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