Network Toolkit

Subnet calculators, DNS lookups, and WHOIS queries running live in your browser. Command generators produce ready-to-run terminal lines. Your data never touches our servers.

Live calculators

Real-time math and live API queries: number conversions, subnetting, DNS lookups, and WHOIS.

Command generators

Ready-to-run commands for Linux, macOS, and Windows. Each one paired with Network+ study notes.

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Number system converter

Convert between decimal, binary, hex, and IPv4 octet formats in real time.

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IP Calculator

Subnet math for IPv4 and IPv6, wildcard masks, and a CIDR notation reference.

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DNS & WHOIS

Run real DNS lookups and WHOIS queries live from the browser. Rate limited to keep it fair.

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Command generator

Generate ping, traceroute, and port-scan commands ready to paste into any terminal.

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Guide

A full Network+ study guide covering OSI layers, ports, protocols, cabling, wireless, routing, security, and cloud.

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