Subnetting Made Super Simple

Subnetting does not have to be as hard as most make it out to be. Start from the beginning and take it step by step.
5 reviews
  • Linda Roeder IT Professional

    Linda has a Bachelor degree in both IT and Accounting and currently works in the IT industry. Since 1998 she has also worked as an online writer for companies such as and By putting all her skills together from her accounting (math), IT (computers), and online writing (educating), she has designed a course for beginners on subnetting and hopes to create more courses in the future.

  • Lifetime access to 16 lectures and 6 quizzes
  • A community of 700+ students learning together!

Subnetting Made Super Simple

Subnetting does not have to be as hard as most make it out to be. Start from the beginning and take it step by step.
5 reviews


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Whether you're just starting to learn subnetting or have been struggling with it for awhile, this guide will show you the easy way to learn to it and have you subnetting like a pro in no time. Starting with how to read binary numbers and IP addresses, you will then be walked through the process of breaking them down and creating any kind of network.

    • Basic knowledge of computer networking.
    • Basic math skills
    • Over 16 lectures and 1.5 hours of content!
    • Learn to read and create binary numbers from 0 thru 255
    • Learn to read and create hexadecimal numbers from 0 through 9 and A through F
    • Discover the difference between Classful and Classless networking
    • How to subnet using A, B, and C networks
    • Find out how to subnet with both IPv4 and IPv6
    • Save IPv4 addresses using VLSM
    • People studying for CCNA or CCENT / 100-101 ICND1 Exams
    • Networking professional who wants to learn to create subnets
    • Anyone else who wants to learn to subnet


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  • SECTION 1:
    Just the Basics
  • 1
    Welcome to Subnetting Made Super Simple

    Introduction to the course.

  • 2
    Basic Binary

    Learn to use the binary numbers that you will need when subnetting. Convert binary numbers to decimal numbers and back again. Step by step format to make it easy to follow along.

  • 3
    Classful IP Addressing

    IP addresses used to be broken down into classes. Learn about IP address classification and how it's used.

  • 4
    Basic Subnet Masks

    There is a second part to an IP address known as a subnet mask. Find out how the subnet masks that go with your classful IP addresses.

  • SECTION 2:
    IPv4 Subnetting
  • 5
    VLSM / CIDR / Route Summarization

    Moving onto more modern IPv4 subnetting. You'll be learning about VLSM and CIDR which are the backbone of subnetting. Once you understand this, you'll be able to conquor subnetting.

  • 6
    The Numbers Behind Subnetting

    Understanding the math behind the subnetting is important if you want to make sure you always get your subnetting right. This will walk you through how the math works with three very different examples.

  • 7
    Subnetting the Easy Way

    Now that you understand the way subnetting works, I'm going to show you something that will make your life a little easier.

  • SECTION 3:
    IPv4 Quizzes - Test Your Knowledge
  • 8
    Practicing Binary Numbers
    20 questions
  • 9
    Classes and Reserved IP Addresses
    20 questions
  • 10
    Powers of 2
    16 questions
  • 11
    CIDR and Route Summarization
    10 questions
  • 12
    Subnetting using VLSM
    7 questions
  • 13
    Taking bits, Counting spaces
    6 questions
  • SECTION 4:
    Subnetting IPv6
  • 14
    Hexadecimal Numbers

    Learn to read and write hexadecimal numbers so you can subnet in IPv6.

  • 15
    Summarize IPv6 Addresses

    IPv6 addresses are very long, but there are ways to shorten them.

  • 16
    IPv6 Prefix Length

    A prefix length is similar to the IPv4 subnet mask, learn how to use it.

  • 17
    Subnetting IPv6 Addresses

    Learn how to do basic IPv6 subnetting. The different parts of the IPv6 address are discussed, and then you're shown how to break it down into subnets and host IDs.

  • SECTION 5:
    Conclusion and Extras
  • 18
  • 19
    What to Do Next
    1 page

    When you're finished learning subnetting and think you really have a thorough understanding, you're ready to move onto more advanced CCNA training. Here are my recommendations for CCNA training courses for you here on Udemy.

  • 20
    IPv4 Charts
    1 page

    Charts for your use as you're going through the IPv4 section of this course.

  • 21
    VLSM Charts
    2 pages

    Charts to use while your working through the VLSM section of this course.

  • 22
    IPv6 Charts
    1 page

    Charts to help as you work through the IPv6 section of this course.


Hours of video content
Course Enrollments


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  • Rich Miller
    Good for a quick review on subnetting

    There was a little too much time spent on basics (binary numbers, hex, etc.) -- anyone who is studying for a Network+ or Cisco cert should already have that stuff down pat. However, it was a decent refresher of the mechanics of calculating subnets.

  • Robert Volk
    Very good course

    Great course to gain the basics of subnetting. Easy to follow. There were a couple things I would have liked explained a little clearer such as the IPv6 subnets when the /xx bits are not divisible by 4. However, if you are understanding the material you will be able to figure it out. I would recommend this course to my peers.

  • Graham Howard

    Only a few lectures in and I already know way more than the almost nothing that I knew previous to me taking this class. I can only look forward to the rest of the lectures and the knowledge that I will gain!

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