# Install cidr2range with Homebrew

Converts CIDRs to IP ranges. Version 1.2.0 via Homebrew; verified 2026-07-25.

## Install

```sh
sudo av install brew:cidr2range
```

Additional install commands:

### macOS

- Homebrew (100%):

```sh
brew install cidr2range
```

  Evidence: local Homebrew formula metadata

## Package facts

- **Package key:** brew:cidr2range
- **Package manager:** Homebrew
- **Version:** 1.2.0
- **Source summary:** Converts CIDRs to IP ranges
- **Homepage:** <https://ipinfo.io>
- **Repository:** <https://github.com/ipinfo/cli>
- **Last updated:** 2026-07-25T14:20:49-04:00
- **Generated:** 2026-08-03T19:37:03+00:00

## Executables

- cidr2range (alias)

## Install behavior

- Bottle: not available

## Freshness

- Page generated: 2026-08-03
- Package-manager version: 1.2.0
## Project history and usage

cidr2range is one of the standalone helper binaries shipped from IPinfo's official CLI repository; it converts CIDR prefixes into IP ranges.

### Project history

IPinfo's CLI repository was created in October 2020 for the company's official command-line interface. Its README lists cidr2range among the separately shipped subcommand binaries, alongside cidr2ip, range2cidr, range2ip, splitcidr, prips, matchip, and other IP helpers.

### Adoption history

The upstream README says the IPinfo CLI suite is distributed through Homebrew, Ubuntu PPA, Debian or Ubuntu install scripts and debs, FreeBSD ports, Arch AUR, Scoop, Docker, Go install, GitHub release artifacts, and source builds. The batch input records cidr2range itself as a Homebrew formula.

### How it is used

As a standalone binary, cidr2range handles the narrow conversion from CIDR notation to start-end IP ranges. It is part of a family of small IP list, range, and CIDR utilities distributed with IPinfo CLI releases.

### Why package nerds care

cidr2range is useful because package managers can expose a tiny, script-friendly IP conversion tool without requiring users to remember a larger CLI subcommand. It is also an example of one upstream Go repository producing several separately packaged command binaries.

### Timeline

- 2020: IPinfo CLI repository created.
- 2021: cidr2range-1.2.0 release published.
- 2020s: IPinfo CLI README documents cidr2range as a separately shipped subcommand binary.

### Related projects

- Related IPinfo helper binaries include cidr2ip, range2cidr, range2ip, splitcidr, prips, matchip, grepip, randip, and mmdb.

### Sources

- <https://github.com/ipinfo/cli#readme>
- <https://api.github.com/repos/ipinfo/cli>
- <https://api.github.com/repos/ipinfo/cli/releases>


## Security Notes

narrow executable package without higher-risk signals.

- **Geiger risk:** green / low
- narrow executable package without higher-risk signals


## Combined YAML source

View the package source record on GitHub. [combined/cidr2range.yml](https://github.com/mxcl/pkgdb/blob/main/combined/cidr2range.yml)


## Sources

- pkg.so package database
- Geiger risk classifier
- curated package history
- pkgdb category and tag curation
- cross-ecosystem install command graph