Subnet Visualizer takes an IPv4 CIDR like 192.168.1.0/24 and shows network, broadcast, first/last host, wildcard mask, and a binary visualization of the mask. It complements CIDR Calculator with a more visual UX.
What Subnet Visualizer does
Explains a subnet visually.
- Network and broadcast
- First/last host
- Wildcard mask
- Binary mask rows
Who Subnet Visualizer is for
- Network engineers teaching subnets
- Students learning CIDR
- Admins planning VLANs
- Developers reading ACL docs
How to use Subnet Visualizer
1. Enter an IPv4 CIDR.
2. Click Visualize.
3. Read ranges and binary mask.
4. Copy the summary if needed.
Features
- Complements cidr-calculator
- Local IPv4 math
- Related WireGuard tool
- Copy summary
Examples
- Visualize 10.0.0.0/8 vs /16.
- Show students host bits flipping.
- Check wildcard for ACL notes.
Tips and limits
- IPv4 only in this version.
- /31 and /32 edge cases are handled carefully for hosts.
- Confirm with your IPAM for production allocations.
- Binary view is for teaching, not packet capture.
Related tools
FAQ
How is this different from CIDR Calculator?
Same family of math, with binary mask visualization and a visual summary focus.
IPv6?
Not in this version.
Extra notes
Subnet Visualizer runs entirely in your browser so drafts and secrets never need to leave your device for processing. Keep a backup of long outputs in your own notes if you rely on them for production servers or live events. Accessibility friendly labels come from the module UI strings, and the layout follows the shared BeeForge .bf-tool shell for consistent spacing and buttons.
Support for developers, marketers, and everyday users is the same client-side model: open the page, configure options, copy or download, then paste into your workflow. BeeForge related links on the tool page point to companion utilities so you can move between related generators without hunting the hub.
When you share results with a teammate, paste into a ticket or gist rather than screenshotting alone, so the text remains searchable. If a browser privacy mode blocks clipboard helpers, select the output manually. Local processing also means the tool works offline after the page and scripts have loaded once.
Validate generated configs or hashes in a staging environment before production use. Prefer regenerating secrets after any accidental paste into chat. For teaching sessions, walk through one sample input end to end so students see how live updates and copy buttons behave together.