CIDR to IP Range Converter

Enter a CIDR block to see its first/last addresses, total addresses, usable hosts, mask, and wildcard.

IPv4 CIDR

—Network / first

—Broadcast / last

—Mask

—Total addresses

Ready—

How to use this CIDR to IP Range Converter

Convert IPv4 CIDR notation to network, broadcast, and usable address ranges. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.