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Subnet Mask Information – Quick Reference Sheet

AddressBitsPrefNetMask
0/32255.255.255.255
1/31255.255.255.254
2/30255.255.255.252
3/29255.255.255.248
16 4/28255.255.255.240
32 5/27255.255.255.224
64 6/26255.255.255.192
128 7/25255.255.255.128
256 8/24255.255.255
512 9/23255.255.254
1 K10/22255.255.252
2 K11/21255.255.248
4 K12/20255.255.240
8 K13/19255.255.224
16 K14/18255.255.192
32 K15/17255.255.128
64 K16/16255.255
128 K17/15255.254
256 K18/14255.252
512 K19/13255.248
1 M20/12255.24
2 M21/11255.224
4 M22/10255.192
8 M23/9255.128
16 M24/8255
32 M25/7254
64 M26/6252
128 M27/5248
256 M28/4240
512 M29/3224
1024 M30/2192
Gineesh Madapparambath

Gineesh Madapparambath

Gineesh Madapparambath is the founder of techbeatly. He is the co-author of The Kubernetes Bible, Second Edition and the author of Ansible for Real Life Automation. He has worked as a Systems Engineer, Automation Specialist, and content author. His primary focus is on Ansible Automation, Containerisation (OpenShift & Kubernetes), and Infrastructure as Code (Terraform). (Read more: iamgini.com)


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