Subnet Cheat Sheet – 24 Subnet Mask, 30, 26, 27, 29, and other IP Address CIDR Network References
In simplest way possible, describe the 'impact' of shifting an IP subnet mask bit one position to the left (assume the starting mask is 255.255.255.0) what does that change accomplish? - Quora
Subnet Cheat Sheet – 24 Subnet Mask, 30, 26, 27, 29, and other IP Address CIDR Network References
Subnet Mask - Network Encyclopedia
How to find your IP address and Subnet Mask in CIDR notation? | From basics| Windows | Linux | by Arijit Sarkar | Medium