IPv4 CIDR Subnet Mask, Network ID & Usable Host Range Calculator
Calculate subnet mask, broadcast address, wildcard mask, and total assignable usable host IP addresses for any CIDR prefix notation (/8 to /32).
Inputs used by this tool
Enter values in the interactive controls when the page loads. The result depends on the assumptions and units shown for each field.
Input type: text
Input type: select
Data handling varies by tool. Review its notes and the Privacy Policy before entering sensitive information.