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Security tool · cloud

mapcidr

Expands, aggregates, and slices CIDR ranges into IP lists for scanning. Pairs with asnmap to turn owned ranges into scannable hosts.

cidripreconprojectdiscovery
Stable IDtool:mapcidrLast updatedLast verifiedLegacy review pendingProvenanceSource-linked
Overview

Where mapcidr fits

Expands, aggregates, and slices CIDR ranges into IP lists for scanning. Pairs with asnmap to turn owned ranges into scannable hosts.

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 -v github.com/projectdiscovery/mapcidr/cmd/mapcidr@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

Expand CIDRAuthorization required

Populate placeholders only with assets that are explicitly in scope.

echo {cidr} | mapcidr -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

ToolasnmapToolnaabu
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.