IPv4 Subnet Table

CIDR Notation	Subnet Mask	Total Hosts	Usable Hosts	Usable IP Range
/0	0.0.0.0	4,294,967,296	4,294,967,294	0.0.0.1 - 255.255.255.254
/1	128.0.0.0	2,147,483,648	2,147,483,646	0.0.0.1 - 127.255.255.254
/2	192.0.0.0	1,073,741,824	1,073,741,822	0.0.0.1 - 63.255.255.254
/3	224.0.0.0	536,870,912	536,870,910	0.0.0.1 - 31.255.255.254
/4	240.0.0.0	268,435,456	268,435,454	0.0.0.1 - 15.255.255.254
/5	248.0.0.0	134,217,728	134,217,726	0.0.0.1 - 7.255.255.254
/6	252.0.0.0	67,108,864	67,108,862	0.0.0.1 - 3.255.255.254
/7	254.0.0.0	33,554,432	33,554,430	0.0.0.1 - 1.255.255.254
/8	255.0.0.0	16,777,216	16,777,214	0.0.0.1 - 0.255.255.254
/9	255.128.0.0	8,388,608	8,388,606	0.0.0.1 - 0.127.255.254
/10	255.192.0.0	4,194,304	4,194,302	0.0.0.1 - 0.63.255.254
/11	255.224.0.0	2,097,152	2,097,150	0.0.0.1 - 0.31.255.254
/12	255.240.0.0	1,048,576	1,048,574	0.0.0.1 - 0.15.255.254
/13	255.248.0.0	524,288	524,286	0.0.0.1 - 0.7.255.254
/14	255.252.0.0	262,144	262,142	0.0.0.1 - 0.3.255.254
/15	255.254.0.0	131,072	131,070	0.0.0.1 - 0.1.255.254
/16	255.255.0.0	65,536	65,534	0.0.0.1 - 0.0.255.254
/17	255.255.128.0	32,768	32,766	0.0.0.1 - 0.0.127.254
/18	255.255.192.0	16,384	16,382	0.0.0.1 - 0.0.63.254
/19	255.255.224.0	8,192	8,190	0.0.0.1 - 0.0.31.254
/20	255.255.240.0	4,096	4,094	0.0.0.1 - 0.0.15.254
/21	255.255.248.0	2,048	2,046	0.0.0.1 - 0.0.7.254
/22	255.255.252.0	1,024	1,022	0.0.0.1 - 0.0.3.254
/23	255.255.254.0	512	510	0.0.0.1 - 0.0.1.254
/24	255.255.255.0	256	254	0.0.0.1 - 0.0.0.254
/25	255.255.255.128	128	126	0.0.0.1 - 0.0.0.126
/26	255.255.255.192	64	62	0.0.0.1 - 0.0.0.62
/27	255.255.255.224	32	30	0.0.0.1 - 0.0.0.30
/28	255.255.255.240	16	14	0.0.0.1 - 0.0.0.14
/29	255.255.255.248	8	6	0.0.0.1 - 0.0.0.6
/30	255.255.255.252	4	2	0.0.0.1 - 0.0.0.2
/31	255.255.255.254	2	0	Point-to-Point Only
/32	255.255.255.255	1	0	Single Host Only