Networking Tool

IPv4 Subnet Calculator

Calculate network, broadcast and usable host ranges from CIDR.

Runs entirely in your browser.

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Related tools & practical resources

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Networking

IPv4 Range & CIDR Converter

Convert a CIDR block into network, broadcast, address range and host counts.

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MAC Address Formatter

Normalize a MAC address into colon, dash, dotted or plain formats.

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Data Transfer Time Calculator

Estimate how long a file transfer will take from data size and network throughput.

GuideLearn the workflowChecklistValidate the taskOfficial downloadsVendor sources onlyTemplatesReusable IT starters

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Network Security & Segmentation

FortiGate Segmentation Without Any-to-Any Policy Sprawl

A practical FortiGate segmentation model for explicit rules, controlled exceptions and maintainable policy as the network grows.

Read insight Network Security & Segmentation

How to Segment a Growing Healthcare Network Without Disrupting Operations

A migration-first approach to VLANs and policy boundaries that starts with inventory and dependencies, protects legacy services and moves risk in controlled steps.

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