CIDR Split & Aggregate

Split IPv4 CIDR networks into smaller prefixes or aggregate overlapping and adjacent ranges locally.

✳ Input stays in this browser. No account needed.

Network or CIDR lines (one per line)Target prefix (for splitting)

Output

This utility processes input in your browser. Verify generated results before use in production systems.

About this utility

Split IPv4 CIDR networks into smaller prefixes or aggregate overlapping and adjacent ranges locally. Double-check results before applying them to production infrastructure, and follow organizational security policies when using third-party websites.

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