Security tool · cloud
asnmap
Maps an organization (or ASN/IP) to its owned CIDR ranges - the fastest way to expand scope from a company name to owned IP space.
Overview
Where asnmap fits
Maps an organization (or ASN/IP) to its owned CIDR ranges - the fastest way to expand scope from a company name to owned IP space.
Detection-first use
Start with the least intrusive template that can distinguish your hypothesis from a normal response. Preserve raw output and a negative control.
Install
Installation references
Install with goAuthorization required
go install github.com/projectdiscovery/asnmap/cmd/asnmap@latest- Positive signal
- Tool-specific output that supports the stated hypothesis.
- Negative control
- No result, or identical behavior against a known-safe control.
- Intrusiveness
- Review flags and target scope before execution.
Test safely
Command templates
Org → CIDRsAuthorization required
Populate placeholders only with assets that are explicitly in scope.
asnmap -org '{org}' -silent- Positive signal
- Tool-specific output that supports the stated hypothesis.
- Negative control
- No result, or identical behavior against a known-safe control.
- Intrusiveness
- Review flags and target scope before execution.
Related
Continue the workflow
Sources
Attribution and verification
Version history: normalized permanent page created 2026-08-20. Upstream activity and popularity are separate signals and do not establish tool safety.