mapcidr ☆
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Description:
Subnet/CIDR operation utility
Type: Formula  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  @projectdisco  |  formulae.brew.sh
Category: Networking
Tags: networking cidr subnet security cli
Install: brew install mapcidr
About:
Mapcidr is a utility designed to transform and manipulate IP subnets and CIDR ranges. It enables security professionals and network engineers to efficiently convert lists of IPs into CIDR blocks, split networks, and perform various calculations. This tool streamlines network asset management and reconnaissance workflows by providing fast, programmatic access to subnet operations.
Key Features:
  • Converts IP lists into consolidated CIDR blocks
  • Splits large networks into smaller subnets
  • Performs fast CIDR and IP range calculations
  • Supports input from STDIN for pipeline integration
Use Cases:
  • Consolidating scattered IP addresses into CIDR ranges for firewall rules
  • Splitting large network ranges for subnet scanning and enumeration
  • Filtering and processing IP lists during network reconnaissance
Alternatives:
  • netaddr – Python library offering comprehensive IP address manipulation, but requires scripting.
  • ipcalc – Standard CLI tool for network address calculation, generally less focused on bulk processing.
Version History
Detected Version Rev Change Commit
Oct 9, 2025 11:03am 0 VERSION_BUMP 12910089
Oct 7, 2025 2:18pm 0 VERSION_BUMP ad132acf
Sep 30, 2025 11:44am 0 VERSION_BUMP 8085c2a9
Sep 16, 2025 3:41am 0 VERSION_BUMP 5b3f2619
Sep 13, 2024 8:02pm 0 VERSION_BUMP 7b032437
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