IP Subnet (CIDR) Calculator
Calculate the network, mask, broadcast and host count from an IP and CIDR prefix.
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Result
254 kullanılabilir host
192.168.1.10/24 → 254 usable hosts
Result in all units
Step-by-step solution
What Is IP Subnet / CIDR?
A subnet is a way of dividing an IP network into smaller subnetworks. CIDR notation (e.g. /24) indicates how many bits of the mask are reserved for the network.
How is it calculated?
How Is It Calculated?
Usable hosts = 2^(32 − prefix) − 2
- Enter the IP address and the prefix (CIDR) value.
- The network and broadcast addresses are subtracted (−2).
For example /24: 2⁸ − 2 = 254 hosts.
Frequently Asked Questions
Why can't 2 addresses be used in every network?
One is the network address and the other the broadcast address; neither can be assigned to devices.