IPv4 Range Expander Online - List Addresses Between Two IPs
Expand an inclusive start and end IPv4 range into one dotted address per line.
About this tool
Enter two IPv4 addresses separated by whitespace, comma or hyphen. The tool converts them to integers and lists every address in ascending order.
How to use
- Enter or select the source data.
- Run the tool locally with the required options.
- Review and copy or download the result.
Features
- Inclusive start and end.
- Ascending dotted IPv4 output.
- Maximum range of 4096 addresses.
Common use cases
- Create a small allowlist candidate.
- Inspect a test network interval.
- Prepare address-by-address input.
Common issues and tips
- The end address must not precede the start.
- Large ranges beyond 4096 addresses are rejected to protect the browser.
Privacy
Processing runs locally in your browser. Input and generated output are not uploaded to Tools12345.
Frequently asked questions
Are both endpoints included?
Yes.
What is the maximum output?
4096 addresses.
Does it accept CIDR?
No, provide a start and end address.