Subnetting workflow depth

v10.81 connects IPv4/IPv6 inspection, exact range-to-CIDR conversion, VLSM allocation, fixed-size splitting, route aggregation, binary/reference views, and practice. Deterministic address math stays local in the browser, with copy/export where it helps real network planning.

How to use this Subnet Splitter

Split one IPv4 CIDR block into equal-size child subnets and inspect each boundary.

Enter, paste, upload, or choose the inputs shown in the tool above.
Adjust the available options for the result you need.
Review the output before copying, downloading, or using it elsewhere.

What this tool does

Choose a longer target prefix to page through child networks, usable host ranges, broadcast addresses, and per-subnet capacity entirely in your browser.

Practical tips and limits

Review the inputs and result before using the output elsewhere. Keep the original data when the operation changes or replaces content.