Network tool
IP Range to CIDR Converter
Convert an inclusive IPv4 range into the smallest exact set of CIDR blocks locally.
Example: start 192.168.1.1, end 192.168.1.50
What this result means
CIDR notation represents an aligned address block. An arbitrary range can require multiple blocks to cover it exactly without adding addresses.
How this check works
The converter chooses the largest aligned CIDR block available at each address, then repeats until it reaches the supplied end address. This produces a minimal exact decomposition.