IP Subnetting Explained in 7 Minutes

IP Subnetting is one of those fundamental computer science topics that I have seen so many people struggle with in my years of coaching.

You’ll need it sooner or later when working with AWS, VPCs, or networking in general.

I cover:
- How IP addresses are built (binary → decimal)
- What subnet masks & CIDR blocks mean
- How to find network ranges, host addresses, and broadcast addresses

👉 Here you can find the subnet calculator so you can practice on your own: https://jodies.de/ipcalc?host=192.168.10.45&mask1=27&mask2=

👉 Also, read my Substack article on this topic, where you can find the image I worked with (here with the correct number blocks in the Mask line*): https://open.substack.com/pub/andreaskretz/p/ip-subnetting-explained-youll-need?r=306ax8&utm_campaign=post&utm_medium=web&showWelcomeOnShare=true

*Note: As I mentioned in the video, I created the used image with ChatGPT. Unfortunately, an error has crept in and the blocks with all ones in the Mask line have 9 instead of 8 ones.

#ipaddress #subnetting #techtutorial #networking

Видео IP Subnetting Explained in 7 Minutes канала Andreas Kretz