Subnetting Secrets - Learn the Easy Way to Subnet

Learn subnetting in 15 seconds flat with my subnetting cheat sheet in this subnetting tutorial.

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  • Lectures 29
  • Video 2 Hours
  • Skill level all level
  • Languages English
  • Includes Lifetime access
    30 day money back guarantee!
    Available on iOS and Android
    Certificate of Completion

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Course Description

Most IT Engineers Can’t Subnet…here’s why…

Understanding IP Subnetting is a vital skill for every IT engineer and yet most don’t know how to do it or go about it completely the wrong way. Once you understand a few simple techniques of this subnetting tutorial, you can actually easily subnet any IP address in your head.

Does this sound familiar?

  • “I have to use a subnet calculator to work it out”
  • “I can’t pass my exams because I am too slow at subnetting”
  • “I keep failing technical interviews because I can’t subnet”
  • “I’m overwhelmed as to where to start”
  • “I worry about looking stupid at work if there is a subnetting fault on the network”

This is where Subnetting Secrets comes in. When I left the police force and went into IT I used to dread subnetting but when I was forced to write some notes to teach a class one day I stumbled across an easy way to subnet. If you can count to eight in your head then you can use my method explained in this subnetting tutorial to:

  • Learn to subnet
  • Pass exams with ease
  • Answer technical interview questions with confidence
  • Quickly troubleshoot subnetting issues at work
  • Easily work out a simple subnetting design for your office network
  • and much more…

 The techniques taught in this subnetting tutorial have been tried and tested by myself to learn to subnet,  pass my MCSE, A+, Network+, CCNA, CCNP and many other non-IT exams as well as easily  pass interviews for Cisco and BT. They have been used by many other students to effectively study for and pass their exams also. I know they will help you too.

What’s Included in the subnetting tutorial?

Subnetting Secrets includes:

  • Over 40 subnetting lessons in the pdf
  • Network design tips
  • The long and short way to subnet
  • VLSM lessons
  • Wildcard masking tips for access lists and OSPF
  • Over 27 videos on subnetting and design
  • Binary and hex primer
  • Exam style questions
  • How to subnet in your head in seconds
  • and much more…

What am I going to get from this course?

  • Over 29 lectures and 1 hour of content!

What you get with this course?

Not for you? No problem.
30 day money back guarantee

Forever yours.
Lifetime access

Learn on the go.
Desktop, iOS and Android

Get rewarded.
Certificate of completion



Subnetting Secrets has been designed to help you learn to subnet in just a few short lessons. It is designed to help you quickly and accurately get to the answers so you can apply them to networking exams and technical interviews.

If you can tick boxes then you can learn to subnet using my proven formula.

Section 1: Class C Subnetting

How to find an IP address in a Class C subnet with a 25 bit mask.

Class C - 26 Bit Mask
Class C - 27 Bit Mask
Class C - 28 Bit Mask
Class C - 29 Bit Mask
Class C - 30 Bit Mask
Section 2: Class B Subnetting
Class B - 17 Bit Mask
Class B - 18 Bit Mask
Class B - 19 Bit Mask
Class B - 20 Bit Mask
Class B - 21 Bit Mask
Class B - 23 Bit Mask
Class B - 24 Bit Mask
Class B - 25 Bit Mask
Class B - 26 Bit Mask
Class B - 27 Bit Mask
Class B - 28 Bit Mask
Section 3: Class A Subnetting
Class A - 10 Bit Mask
Class A - 12 Bit Mask
Class A - 20 Bit Mask
Class A - 26 Bit Mask
Section 4: Network Design
Design Example 1
Design Example 2
Design Example 3
Section 5: Wildcard Masks
Wildcard Masks Example 1
Wildcard Masks Example 2
Wildcard Masks Example 3
Section 6: Subnetting Secrets in PDF
2.38 MB

127 Page Subnetting Secrets Manual

Instructor Biography

Paul Browning , Cisco Engineer and Internet Entrepreneur

I worked in the police in the UK for 12 years as a patrol officer and detective. While I was in the job I helped teach the new e-mail system to other officers. I took a few IT exams and then left for a career in IT in June 2000.

I took a few more exams with vendors such as Cisco and Microsoft and got a job working for Cisco for two years. I then started an IT training company teaching Cisco and computer networking courses. I built the business until it had several offices in the UK and then sold it.

I now run a publishing business and several websites teaching IT related subjects. I've learned how to build a successful company and how to make it in the world of IT. I hope what I've learned helps you too.

Paul Browning - December 2014

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Average Rating
  1. 5 Stars
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  5. 1 Stars
    • Mark Nations

    Spot on

    Repetition makes the topic sink in. He really is repeating the same technic over and over but I think it is exactly what is needed to get the subnetting concept to stick in your head. Good job. I think I got it now.

    • Regina McLean

    Clear and really helped me understand subnetting.


    • Jim Holloway

    Subnetting Secrets as easy as the title says EASY

    I really like the repetition in these examples, the light bulb starts coming on after the 2nd example and after the 3rd or 4th time I get the confidence I can do this. The more repetitions in the examples helps to reinforce the skill being taught at least for me I need to see if more than once. I LOVE IT.

    • Cello Baca

    Good training

    I didn't like this training is not down-loadable

    • Steve Dant

    Excellent course for understanding subnetting

    Mr. Browning is a very good instructor in that his lessons are well paced, his voice is clear and his diagrams and explanations are very understandable. I know how to subnet but Excel spreadsheet for determining subnets and hosts was the key to learning subnet shortcuts. Thanks for a great course; Well worth the time spent.

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