Subnet / CIDR Calculator
Work out network ranges, masks and host counts for IPv4 and IPv6, then split a block into subnets.
Network details
Binary view
Subnet splitter
A count that is not a power of two is rounded up (e.g. 5 subnets → 8).
Work out network ranges, masks and host counts for IPv4 and IPv6, then split a block into subnets.
A count that is not a power of two is rounded up (e.g. 5 subnets → 8).