IPv4 Subnet & Host Range Calculator

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Calculate network address, broadcast, usable host ranges, and binary masks.

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IPv4 Host Address

CIDR Prefix (/24)

Interactive Prefix Slider/24

Subnet Mask255.255.255.0/24

Usable Hosts254of 256 total

Network Address192.168.1.0Base subnet route

Broadcast Address192.168.1.255Subnet broadcast

Subnet Network Specifications

First Usable Host:192.168.1.1

Last Usable Host:192.168.1.254

Wildcard Mask:0.0.0.255

IP Scope & Class:Class C (Private RFC 1918)

Binary IP:11000000.10101000.00000001.01100100

Binary Mask:11111111.11111111.11111111.00000000

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All computation executes exclusively inside your device memory using Web APIs and WebAssembly. No data or files ever leave your browser.

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Zero network roundtrips. Operates offline without sending external API requests, delivering instantaneous sub-millisecond computation.

Developer-First Architecture

Engineered with RFC standards, cryptographic primitives (Web Crypto Subtle API), and production-grade formatting libraries.

Step-by-Step: How to Use IPv4 Subnet & Host Range Calculator

Enter IP: Input your target IPv4 address.
Select CIDR: Choose your subnet CIDR prefix (e.g. /24, /16, /28).
Inspect: View network address, broadcast address, and copy host specs.

Frequently Asked Questions

What is the difference between network and broadcast address?

The network address is the first address in a subnet identifying the network itself, while the broadcast address is the last address used to communicate with all hosts.

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