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Analyze an IPv4 or IPv6 prefix to review address range and capacity
Analyze an IPv4 or IPv6 prefix to review address range and capacity.
Flagship use case · Developer, Data & AI
IP Network Planner
Design and validate IPv4 and IPv6 networks with prefix analysis, overlap detection, gateway checks, and exportable address plans.
App v2.0.0Site v6.2.0Local by default
Interface preview
Working application structure
This representative capture shows the application shell and primary workspace. Actual results depend on the information entered and the workflow completed.
Desktop viewport · representative interface stateOpen live application →
Visible methodAssumptions and record logic remain reviewable.
Local-first postureData handling is stated in the application.
Portable outputExports support review and continuity.
Explicit boundariesLimitations are part of the product evidence.
User and problem
Where the tool fits
Designed for: Network engineers, administrators, architects, and technical planners creating or reviewing IP address plans.
Problem addressed: Address plans fail when prefix math, usable ranges, gateways, VLAN records, or overlapping networks are handled inconsistently.
Core workflow
From input to decision-ready output
Frame→Structure→Analyze→Export
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Add planned networks with site, VLAN, purpose, gateway, and notes
Add planned networks with site, VLAN, purpose, gateway, and notes.
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Run overlap and gateway checks, then export the address plan as JSON or CSV
Run overlap and gateway checks, then export the address plan as JSON or CSV.
Method
Transparent calculation and record logic
The methodology is intentionally visible so users can challenge the assumptions and validate the result against authoritative evidence.
How the application works
- Uses binary prefix arithmetic to calculate network boundaries and address capacity.
- Compares planned address intervals to detect overlaps.
- Checks whether a proposed gateway belongs to the entered network and records plan metadata separately from address math.
Illustrative output
10.42.16.0/22 Range: 10.42.16.0 – 10.42.19.255 Addresses: 1,024 Overlap status: Clear
Boundaries
What the result does not prove
- Usable-host conventions vary for special networks and IPv6 does not use IPv4 broadcast behavior.
- The tool does not query routers, DHCP, DNS, IPAM, or routing tables.
- Deployment plans still require organizational standards, security review, and change control.
Working data remains local to this browser unless the application explicitly describes an external request or the user exports a file. Browser storage can be lost when data is cleared or the device changes.