Subnet calculator
Turn an IPv4 or IPv6 CIDR into its address range, mask and host count, and split it into smaller subnets.
IPv4, 256 addresses.
192.168.1.0/24Private
Address typePrivate · RFC 1918
Usable hosts leave out the network and broadcast addresses.
Binary
Address11000000.10101000.00000001.00000000
Netmask11111111.11111111.11111111.00000000
Network11000000.10101000.00000001.00000000
The 24 network bits are highlighted; the rest are for hosts.
Split into smaller subnets
2 subnets of 128 addresses each.
- 192.168.1.0/25192.168.1.0 to 192.168.1.127
- 192.168.1.128/25192.168.1.128 to 192.168.1.255
Does this address fit?
Type an address, or a CIDR to check a whole block.
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