asn ☆

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Description:
Organization lookup and server tool (ASN / IPv4 / IPv6 / Prefix / AS Path)

Type: Formula | Latest Version: 0.80.0@0 | Tracked Since: Dec 17, 2025

Links: Homepage | formulae.brew.sh

Category: Networking

Tags: networking cli bpg diagnostics security

Install: brew install asn

About:
VersTracker is a Homebrew package directory that provides enriched metadata for the 'asn' command-line tool. This utility performs real-time ASN, IP, and BGP lookups using public APIs, enabling network engineers to quickly identify IP ownership, routing paths, and network prefixes.

Key Features:

Real-time ASN and IP ownership lookup via multiple sources
BGP path analysis and prefix visualization
Integration with tools like nmap and mtr for enhanced network diagnostics
Colorized output and easy-to-read formatting

Use Cases:

Investigating suspicious IP addresses during security incident response
Troubleshooting network routing issues and BGP path analysis
Gathering intelligence on IP infrastructure and ASN ownership

Alternatives:

bgpq4 – Focuses on generating prefix-lists from IRR data, whereas asn provides broader real-time lookup and visualization
whois – Provides raw registry data, while asn offers parsed, enriched output with BGP context

License: MIT

Dependencies: aha, bash, coreutils, grepcidr, ipcalc, jq, mtr, nmap, bind

Bottles available for: all

Version History

Detected	Version	Rev	Change	Commit