IP Range to CIDR Converter

Convert an IPv4 start and end address to the smallest CIDR list covering exactly that range.

IP Range to CIDR Converter: What does this tool do?

Convert an IPv4 start and end address to the smallest CIDR list covering exactly that range.

IP Range to CIDR Converter: How to use

Enter the start and end addresses. Both endpoints are included, using the fewest CIDR blocks without including addresses outside the range. Only IPv4 is supported; the address count includes network and broadcast addresses.

How does the input data be processed?

Enter contents and files are processed in the current browser and are not sent or stored in the Eduve server.