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IPv4 Subnetting

A subnet allows the flow of network traffic between computers to be segregated based on a network configuration. subnetting can improve network security and performance.

CIDR		Subnet Mask 		Addresses 		Wildcard 
/32 		255.255.255.255 	1			0.0.0.0
/31 		255.255.255.254 	2 			0.0.0.1
/30 		255.255.255.252 	4 			0.0.0.3
/29 		255.255.255.248 	8 			0.0.0.7
/28 		255.255.255.240 	16 			0.0.0.15
/27 		255.255.255.224 	32 			0.0.0.31
/26 		255.255.255.192 	64 			0.0.0.63
/25 		255.255.255.128 	128 			0.0.0.127
/24 		255.255.255.0 		256 			0.0.0.255
/23 		255.255.254.0 		512 			0.0.1.255
/22 		255.255.252.0 		1,024 			0.0.3.255
/21 		255.255.248.0 		2,048 			0.0.7.255
/20 		255.255.240.0 		4,096 			0.0.15.255
/19 		255.255.224.0 		8,192 			0.0.31.255
/18 		255.255.192.0 		16,384 			0.0.63.255
/17 		255.255.128.0 		32,768 			0.0.127.255
/16 		255.255.0.0 		65,536 			0.0.255.255
/15 		255.254.0.0 		131,072 		0.1.255.255
/14 		255.252.0.0 		262,144 		0.3.255.255
/13 		255.248.0.0 		524,288 		0.7.255.255
/12 		255.240.0.0 		1,048,576 		0.15.255.255
/11 		255.224.0.0 		2,097,152 		0.31.255.255
/10 		255.192.0.0 		4,194,304 		0.63.255.255
/9 		255.128.0.0 		8,388,608 		0.127.255.255
/8 		255.0.0.0 		16,777,216 		0.255.255.255
/7 		254.0.0.0 		33,554,432 		1.255.255.255
/6 		252.0.0.0 		67,108,864 		3.255.255.255
/5 		248.0.0.0 		134,217,728 		7.255.255.255
/4 		240.0.0.0 		268,435,456 		15.255.255.255
/3 		224.0.0.0 		536,870,912 		31.255.255.255
/2 		192.0.0.0 		1,073,741,824 		63.255.255.255
/1 		128.0.0.0 		2,147,483,648 		127.255.255.255
/0 		0.0.0.0 		4,294,967,296 		255.255.255.255 

 

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