Command-line tool

cidr

brew/cidr

Checked 25 Oct 2026, 21:09 UTC · Listing refreshed from Homebrew, winget, npm, Scoop and cargo; npm packages checked against OSV.dev

CLI to perform various actions on CIDR ranges

Website Source

At a glance

Type

Command-line tool

Install on

macOS, Linux

Last checked

25 Oct 2026, 21:09 UTC

Install it

macOS

brew install cidr

Linux

brew install cidr

Explain a CIDR range

cidr explain 10.0.0.0/16

Check whether an address belongs to a CIDR range

cidr contains 10.0.0.0/16 10.0.14.5

Get a count of all addresses in a CIDR range

cidr count 10.0.0.0/16

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