All Three Classes(A,B,C) Subnets

Class A Subnets
Subnet Mask	Networking Bits	Number of Networks	Number of Hosts
255.255.255.252	/30	4,194,304	2
255.255.255.248	/29	2,097,152	6
255.255.255.240	/28	1,048,576	14
255.255.255.224	/27	524,288	30
255.255.255.192	/26	262,144	62
255.255.255.128	/25	131,072	126
255.255.255.0	/24	65,536	254
255.255.254.0	/23	32,768	510
255.255.252.0	/22	16,384	1,022
255.255.248.0	/21	8,192	2,046
255.255.240.0	/20	4,096	4,094
255.255.224.0	/19	2,048	8,190
255.255.192.0	/18	1,024	16,382
255.255.128.0	/17	512	32,766
255.255.0.0	/16	256	65,534
255.254.0.0	/15	128	131,070
255.252.0.0	/14	64	262,142
255.248.0.0	/13	32	524,286
255.240.0.0	/12	16	1,048,574
255.224.0.0	/11	8	2,097,150
255.192.0.0	/10	4	4,194,302
255.128.0.0	/9	2	8,388,606
255.0.0.0	/8	1	16,777,216

Class B Subnets
Subnet Mask	Networking Bits	Number of Networks	Number of Hosts
255.255.255.252	/30	32,768	2
255.255.255.248	/29	8,192	6
255.255.255.240	/28	4,096	14
255.255.255.224	/27	2,048	30
255.255.255.192	/26	1,024	62
255.255.255.128	/25	512	126
255.255.255.0	/24	256	254
255.255.254.0	/23	128	510
255.255.252.0	/22	64	1,022
255.255.248.0	/21	32	2,046
255.255.240.0	/20	16	4,094
255.255.224.0	/19	8	8,190
255.255.192.0	/18	4	16,382
255.255.128.0	/17	2	32,764
255.255.0.0	/16	1	65,534

Class C Subnets
Subnet Mask	Networking Bits	Number of Networks	Number of Hosts
255.255.255.252	/30	64	2
255.255.255.248	/29	32	6
255.255.255.240	/28	16	14
255.255.255.224	/27	8	30
255.255.255.192	/26	4	62
255.255.255.128	/25	2	126
255.255.255.0	/24	1	254