asnmap ☆
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Description:
Quickly map organization network ranges using ASN information
Type: Formula  |  Latest Version: 1.1.1@0  |  Tracked Since: Dec 17, 2025
Links: Homepage  |  @pdiscoveryio  |  formulae.brew.sh
Category: Security
Tags: security networking reconnaissance osint cli
Install: brew install asnmap
About:
asnmap is a network reconnaissance tool that leverages ASN (Autonomous System Number) data to quickly identify and map IP ranges associated with specific organizations. It queries various public data sources to aggregate IP blocks, enabling security professionals to understand an entity's network footprint efficiently. This facilitates better scope definition and attack surface management during security assessments.
Key Features:
  • Fast IP range discovery via ASN lookups
  • Supports multiple output formats (JSON, CSV)
  • Integrates with Project Discovery ecosystem (httpx, naabu)
  • Queries various public data sources for comprehensive results
Use Cases:
  • Reconnaissance phase of penetration tests to map target infrastructure
  • Defensive security to identify and monitor owned IP ranges
  • OSINT investigations to link organizations to network infrastructure
Alternatives:
  • masscan – Masscan is for port scanning large networks, whereas asnmap is for discovery via ASN metadata.
  • whois – Standard whois lookups are often slower and less automated for bulk ASN queries compared to asnmap.
License: MIT
Bottles available for: arm64_tahoe, arm64_sequoia, arm64_sonoma, arm64_ventura, arm64_monterey, sonoma, ventura, monterey, arm64_linux, x86_64_linux
Version History
Detected Version Rev Change Commit
Sep 13, 2025 1:27pm 0 VERSION_BUMP 3359f020
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