cidr ☆
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Description:
CLI to perform various actions on CIDR ranges
Type: Formula  |  Latest Version: 2.3.0@0  |  Tracked Since: Dec 17, 2025
Links: Homepage  |  formulae.brew.sh
Category: Networking
Tags: cli networking cidr ip-address devops
Install: brew install cidr
About:
cidr is a command-line interface tool designed for performing various calculations and validations on CIDR (Classless Inter-Domain Routing) ranges. It provides utilities for expanding ranges, calculating network masks, and determining IP counts. This tool is essential for network engineers and developers managing IP address allocations and infrastructure planning.
Key Features:
  • Expand CIDR ranges to individual IP addresses
  • Calculate network masks and IP counts
  • Validate CIDR notation for correctness
  • Fast and lightweight Go-based implementation
Use Cases:
  • Generating IP address lists for network ACLs or firewall rules
  • Planning and auditing IP address allocations in cloud infrastructure
Alternatives:
  • ipcalc – ipcalc is a classic tool often pre-installed on Linux systems, while cidr offers a modern, cross-platform alternative with a focus on simplicity and speed.
License: MIT
Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, sonoma, arm64_linux, x86_64_linux
Version History
Detected Version Rev Change Commit
Sep 12, 2025 8:29pm 0 VERSION_BUMP bbcbdc5b
Jul 21, 2024 3:27pm 0 VERSION_BUMP d1523d20
Dec 9, 2023 10:20pm 0 VERSION_BUMP 408a60a8
Dec 9, 2023 9:35pm 0 VERSION_BUMP e3c042c2
Dec 4, 2023 10:48am 0 VERSION_BUMP 1a25dde3
Dec 3, 2023 12:55am 0 VERSION_BUMP cff94516
Nov 30, 2023 10:07pm 0 NEW 538c1288
Nov 30, 2023 9:22pm 0 VERSION_BUMP f2d4dbbf
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