SUBNET.IM

The ultimate subnet calculator with visual binary representation and comprehensive cheat sheet

Subnet Calculator

IP Address

CIDR

IP Lookup / Info

Private (RFC1918)

Private IP address reserved for internal networks, unable to lookup information

Location

N/A

ISP / Organization

N/A

Autonomous System

N/A

CIDR	Subnet Mask	Wildcard Mask	Total IPs	Usable Hosts	Network Bits	Host Bits
/32	255.255.255.255	0.0.0.0	1	1	32	0
/31	255.255.255.254	0.0.0.1	2	2	31	1
/30	255.255.255.252	0.0.0.3	4	2	30	2
/29	255.255.255.248	0.0.0.7	8	6	29	3
/28	255.255.255.240	0.0.0.15	16	14	28	4
/27	255.255.255.224	0.0.0.31	32	30	27	5
/26	255.255.255.192	0.0.0.63	64	62	26	6
/25	255.255.255.128	0.0.0.127	128	126	25	7
/24	255.255.255.0	0.0.0.255	256	254	24	8
/23	255.255.254.0	0.0.1.255	512	510	23	9
/22	255.255.252.0	0.0.3.255	1,024	1,022	22	10
/21	255.255.248.0	0.0.7.255	2,048	2,046	21	11
/20	255.255.240.0	0.0.15.255	4,096	4,094	20	12
/19	255.255.224.0	0.0.31.255	8,192	8,190	19	13
/18	255.255.192.0	0.0.63.255	16,384	16,382	18	14
/17	255.255.128.0	0.0.127.255	32,768	32,766	17	15
/16	255.255.0.0	0.0.255.255	65,536	65,534	16	16
/15	255.254.0.0	0.1.255.255	131,072	131,070	15	17
/14	255.252.0.0	0.3.255.255	262,144	262,142	14	18
/13	255.248.0.0	0.7.255.255	524,288	524,286	13	19
/12	255.240.0.0	0.15.255.255	1,048,576	1,048,574	12	20
/11	255.224.0.0	0.31.255.255	2,097,152	2,097,150	11	21
/10	255.192.0.0	0.63.255.255	4,194,304	4,194,302	10	22
/9	255.128.0.0	0.127.255.255	8,388,608	8,388,606	9	23
/8	255.0.0.0	0.255.255.255	16,777,216	16,777,214	8	24
/7	254.0.0.0	1.255.255.255	33,554,432	33,554,430	7	25
/6	252.0.0.0	3.255.255.255	67,108,864	67,108,862	6	26
/5	248.0.0.0	7.255.255.255	134,217,728	134,217,726	5	27
/4	240.0.0.0	15.255.255.255	268,435,456	268,435,454	4	28
/3	224.0.0.0	31.255.255.255	536,870,912	536,870,910	3	29
/2	192.0.0.0	63.255.255.255	1,073,741,824	1,073,741,822	2	30
/1	128.0.0.0	127.255.255.255	2,147,483,648	2,147,483,646	1	31
/0	0.0.0.0	255.255.255.255	4,294,967,296	4,294,967,294	0	32