Subnet Calculator Blog

Free educational articles about networking, subnetting, and IP addresses. Start learning today!

Getting Started

• Beginner
  Understanding Subnets: A Beginner's Guide
  Learn what subnets are and why they matter for your network.
• Beginner
  Subnetting for Beginners: Start Here
  Complete beginner's guide - start here if you're new.
• Beginner
  What Is a Subnet Mask?
  Simple explanation with real examples.

Core Concepts

• Core
  How to Calculate Subnets: Step-by-Step
  The math behind subnetting explained.
• Core
  CIDR Notation Explained (/24, /25, /26...)
  What slash notation means and how to use it.
• Core
  How Many Hosts Per Subnet?
  Complete reference table for all subnet sizes.
• Core
  Network Address vs Broadcast Address
  The two reserved addresses in every subnet.

IP Address Types

• IP
  Private vs Public IP Addresses
  What's the difference and when to use each.
• IP
  IPv4 vs IPv6: What's the Difference?
  Why we needed a new address system.
• IP
  IP Address Classes: Class A, B, C
  The historical classful system explained.

Practical Networks

• Practical
  Why Subnet? The Business Case
  Security, performance, and manageability benefits.
• Practical
  Real-World Subnetting Examples
  Practical scenarios with actual IP addresses.
• Practical
  Home Network Subnets
  Setting up your home for better security.

Cloud Networking

• Cloud
  Subnetting in AWS (VPC)
  Planning subnets in Amazon Web Services.
• Cloud
  Subnetting in Azure
  Virtual network planning in Microsoft Azure.
• Cloud
  Subnetting in GCP
  Google Cloud Platform subnet design.

Tools & Troubleshooting

• Tools
  Subnet Calculator: Your Essential Tool
  How to use our subnet calculator effectively.
• Tools
  Finding Your Subnet Mask
  Windows, Mac, and Linux commands.
• Troubleshoot
  Troubleshooting Connectivity Issues
  Common problems and solutions.

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