Command-line tool

asnmap

brew/asnmap

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

Quickly map organization network ranges using ASN information

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 asnmap

Linux

brew install asnmap

Look up CIDR ranges for an ASN

asnmap -a AS5650 -silent

Look up CIDR ranges for an IP address

asnmap -i 100.19.12.21 -silent

Look up CIDR ranges for a domain

asnmap -d example.com -silent

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