IP CIDR Calculator
Calculate IPv4 CIDR ranges.
Check subnet boundaries for docs, local labs, firewall notes, and QA environment planning.
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CIDR result
Input: 192.168.1.10/24
Network: 192.168.1.0
Broadcast: 192.168.1.255
Subnet mask: 255.255.255.0
First usable: 192.168.1.1
Last usable: 192.168.1.254
Usable hosts: 254- Prefix
- /24
- Usable hosts
- 254