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109 tools

/ IP Address Calculator

IP Address

Enter IP address with optional CIDR notation

CIDR Prefix (optional)

Default: 24 (if not specified in IP address)

/ Selected Tool

IP Address Calculator

Calculate subnet information from IP/CIDR notation

■ 01

What is IP Subnetting?

IP subnetting is the practice of dividing a network into smaller, more manageable pieces called subnets. Each subnet has its own network address, broadcast address, and range of usable host addresses. CIDR (Classless In…

■ 02

How does it work?

Key Concepts Network Address: First address in subnet, identifies the network Broadcast Address: Last address in subnet, used to reach all hosts Subnet Mask: Defines which bits are network vs host bits Wildcard Mask: In…

■ 03

Sample Cases

Covers Home network, Point-to-point link, and Large corporate network so you can compare common inputs and outputs quickly.

/ Code

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/ Integration

Source code from the selected tool, shown here alongside the live version on the right.

/ Source Code

TypeScript

typescript

// No external dependencies needed - pure JavaScript/TypeScript

interface SubnetInfo {
  networkAddress: string;
  broadcastAddress: string;
  subnetMask: string;
  firstHost: string;
  lastHost: string;
  usableHosts: number;
}