Subnet Calculator
Calculate subnet mask, network, broadcast, and host range for IPv4 CIDR blocks.
IPv4 address
CIDR prefix: /24
- Subnet mask
- 255.255.255.0
- Network
- 192.168.1.0
- Broadcast
- 192.168.1.255
- First host
- 192.168.1.1
- Last host
- 192.168.1.254
- Usable hosts
- 254
Note: /31 and /32 behave differently (point-to-point and single-host). This calculator reflects that.
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