CIDR / Subnet Calculator
FreeCalculate subnet details from CIDR notation. Network address, broadcast, host range and more.
Network Address
192.168.1.0
Broadcast Address
192.168.1.255
Subnet Mask
255.255.255.0
Wildcard Mask
0.0.0.255
First Usable Host
192.168.1.1
Last Usable Host
192.168.1.254
Total IP Addresses
256
Usable Host IPs
254
IP Class
C
IP Type
Private (RFC 1918)
Subnet Mask (binary)
11111111.11111111.11111111.00000000
CIDR Notation
192.168.1.0/24
Prefix /24 — Bit Distribution
Network (24 bits)Host (8 bits)
Split into /25 subnets (first 8 shown)
| CIDR | Usable Hosts |
|---|---|
| 192.168.1.0/25 | 126 |
| 192.168.1.128/25 | 126 |
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