# IPv4 Range Expander

> Enter the first and last address of a range and get the smallest CIDR block that covers it.

- URL: https://prismkit.hippodev.app/en/network/ipv4-range-expander
- Category: Network
- Runs: client-side, no upload

This is an interactive tool — open https://prismkit.hippodev.app/en/network/ipv4-range-expander to use it.