IP Range Expander

Expand CIDR & IP Ranges Easily

Welcome to IP Range Expander — the effortless way to turn CIDR notation and IP ranges into complete lists of IPv4 addresses.

Whether you’re planning subnets, building firewall rules, or auditing network access, this tool saves you time and eliminates manual errors.

Use this tool to:

• Generate exhaustive IP lists for firewall rules and ACLs
• Prepare scan targets for security audits
• Validate and document network inventories
• Integrate with automation workflows and scripts

Built for simplicity and speed, IP Range Expander works right in your browser — no installs, no signup required. Just paste your input, expand, and export.

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