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Developer

IP subnet & CIDR calculator

Calculate IPv4 network, broadcast, mask, and host range from CIDR — free client-side math.

Recent results

Saved locally in your browser only.

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No saved results yet. Run the tool to capture output here.

Free — no login

Processed in your browser — files are not uploaded.

IPv4 CIDR

Class

C

Prefix

/24

Total addresses

256

Usable hosts

254

Network

192.168.1.0

Broadcast

192.168.1.255

Subnet mask

255.255.255.0

Wildcard

0.0.0.255

First host

192.168.1.1

Last host

192.168.1.254

Pure client-side IPv4 math — no network scanning.

Frequently Asked Questions

No. All calculations run locally in your browser.

Version 1 focuses on IPv4 CIDR notation only.

No. This tool is free.