Subnet Splitter & Merger

Split subnets into smaller ranges, merge contiguous blocks, or check for CIDR overlaps

Source Subnet (CIDR)

Split Into (Target Prefix)

Quick Examples

About This Tool

Split a larger subnet into smaller, equal-sized subnets. Useful for network planning and IP address management. For example, split a /20 into sixteen /24 subnets.

100% Client-Side Analysis

This tool runs 100% in your browser. No data is sent to any server.