IPv4 Subnet Calculator

Enter an IP with a CIDR prefix or a subnet mask to see its network, broadcast, host range, and host count. You can also split the network into smaller subnets.

Try:192.168.1.10/24 10.0.0.0/8 172.16.5.4/20 203.0.113.9/29

IPv6 calculator →

private IP (RFC 1918)10.10.232.0/22

network10.10.232.0/22

broadcast10.10.235.255

first host10.10.232.1

last host10.10.235.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.10.232.0/22

address00001010.00001010.11101000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00001010.11101000.00000000

broadcast00001010.00001010.11101011.11111111

green = network part, grey = host part

hex0x0a0ae800

decimal168486912

reverse dns0.232.10.10.in-addr.arpa

ipv4-mapped::ffff:a0a:e800

/22 split into /28 · 64 subnets

close ×

#	network	host range	broadcast
1	10.10.232.0/28	10.10.232.1 – 10.10.232.14	10.10.232.15
2	10.10.232.16/28	10.10.232.17 – 10.10.232.30	10.10.232.31
3	10.10.232.32/28	10.10.232.33 – 10.10.232.46	10.10.232.47
4	10.10.232.48/28	10.10.232.49 – 10.10.232.62	10.10.232.63
5	10.10.232.64/28	10.10.232.65 – 10.10.232.78	10.10.232.79
6	10.10.232.80/28	10.10.232.81 – 10.10.232.94	10.10.232.95
7	10.10.232.96/28	10.10.232.97 – 10.10.232.110	10.10.232.111
8	10.10.232.112/28	10.10.232.113 – 10.10.232.126	10.10.232.127
9	10.10.232.128/28	10.10.232.129 – 10.10.232.142	10.10.232.143
10	10.10.232.144/28	10.10.232.145 – 10.10.232.158	10.10.232.159
11	10.10.232.160/28	10.10.232.161 – 10.10.232.174	10.10.232.175
12	10.10.232.176/28	10.10.232.177 – 10.10.232.190	10.10.232.191
13	10.10.232.192/28	10.10.232.193 – 10.10.232.206	10.10.232.207
14	10.10.232.208/28	10.10.232.209 – 10.10.232.222	10.10.232.223
15	10.10.232.224/28	10.10.232.225 – 10.10.232.238	10.10.232.239
16	10.10.232.240/28	10.10.232.241 – 10.10.232.254	10.10.232.255
17	10.10.233.0/28	10.10.233.1 – 10.10.233.14	10.10.233.15
18	10.10.233.16/28	10.10.233.17 – 10.10.233.30	10.10.233.31
19	10.10.233.32/28	10.10.233.33 – 10.10.233.46	10.10.233.47
20	10.10.233.48/28	10.10.233.49 – 10.10.233.62	10.10.233.63
21	10.10.233.64/28	10.10.233.65 – 10.10.233.78	10.10.233.79
22	10.10.233.80/28	10.10.233.81 – 10.10.233.94	10.10.233.95
23	10.10.233.96/28	10.10.233.97 – 10.10.233.110	10.10.233.111
24	10.10.233.112/28	10.10.233.113 – 10.10.233.126	10.10.233.127
25	10.10.233.128/28	10.10.233.129 – 10.10.233.142	10.10.233.143
26	10.10.233.144/28	10.10.233.145 – 10.10.233.158	10.10.233.159
27	10.10.233.160/28	10.10.233.161 – 10.10.233.174	10.10.233.175
28	10.10.233.176/28	10.10.233.177 – 10.10.233.190	10.10.233.191
29	10.10.233.192/28	10.10.233.193 – 10.10.233.206	10.10.233.207
30	10.10.233.208/28	10.10.233.209 – 10.10.233.222	10.10.233.223
31	10.10.233.224/28	10.10.233.225 – 10.10.233.238	10.10.233.239
32	10.10.233.240/28	10.10.233.241 – 10.10.233.254	10.10.233.255
33	10.10.234.0/28	10.10.234.1 – 10.10.234.14	10.10.234.15
34	10.10.234.16/28	10.10.234.17 – 10.10.234.30	10.10.234.31
35	10.10.234.32/28	10.10.234.33 – 10.10.234.46	10.10.234.47
36	10.10.234.48/28	10.10.234.49 – 10.10.234.62	10.10.234.63
37	10.10.234.64/28	10.10.234.65 – 10.10.234.78	10.10.234.79
38	10.10.234.80/28	10.10.234.81 – 10.10.234.94	10.10.234.95
39	10.10.234.96/28	10.10.234.97 – 10.10.234.110	10.10.234.111
40	10.10.234.112/28	10.10.234.113 – 10.10.234.126	10.10.234.127
41	10.10.234.128/28	10.10.234.129 – 10.10.234.142	10.10.234.143
42	10.10.234.144/28	10.10.234.145 – 10.10.234.158	10.10.234.159
43	10.10.234.160/28	10.10.234.161 – 10.10.234.174	10.10.234.175
44	10.10.234.176/28	10.10.234.177 – 10.10.234.190	10.10.234.191
45	10.10.234.192/28	10.10.234.193 – 10.10.234.206	10.10.234.207
46	10.10.234.208/28	10.10.234.209 – 10.10.234.222	10.10.234.223
47	10.10.234.224/28	10.10.234.225 – 10.10.234.238	10.10.234.239
48	10.10.234.240/28	10.10.234.241 – 10.10.234.254	10.10.234.255
49	10.10.235.0/28	10.10.235.1 – 10.10.235.14	10.10.235.15
50	10.10.235.16/28	10.10.235.17 – 10.10.235.30	10.10.235.31
51	10.10.235.32/28	10.10.235.33 – 10.10.235.46	10.10.235.47
52	10.10.235.48/28	10.10.235.49 – 10.10.235.62	10.10.235.63
53	10.10.235.64/28	10.10.235.65 – 10.10.235.78	10.10.235.79
54	10.10.235.80/28	10.10.235.81 – 10.10.235.94	10.10.235.95
55	10.10.235.96/28	10.10.235.97 – 10.10.235.110	10.10.235.111
56	10.10.235.112/28	10.10.235.113 – 10.10.235.126	10.10.235.127
57	10.10.235.128/28	10.10.235.129 – 10.10.235.142	10.10.235.143
58	10.10.235.144/28	10.10.235.145 – 10.10.235.158	10.10.235.159
59	10.10.235.160/28	10.10.235.161 – 10.10.235.174	10.10.235.175
60	10.10.235.176/28	10.10.235.177 – 10.10.235.190	10.10.235.191
61	10.10.235.192/28	10.10.235.193 – 10.10.235.206	10.10.235.207
62	10.10.235.208/28	10.10.235.209 – 10.10.235.222	10.10.235.223
63	10.10.235.224/28	10.10.235.225 – 10.10.235.238	10.10.235.239
64	10.10.235.240/28	10.10.235.241 – 10.10.235.254	10.10.235.255

01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefix	subnet mask	addresses	hosts	in your /22
/0	0.0.0.0	4,294,967,296	4,294,967,294	-
/1	128.0.0.0	2,147,483,648	2,147,483,646	-
/2	192.0.0.0	1,073,741,824	1,073,741,822	-
/3	224.0.0.0	536,870,912	536,870,910	-
/4	240.0.0.0	268,435,456	268,435,454	-
/5	248.0.0.0	134,217,728	134,217,726	-
/6	252.0.0.0	67,108,864	67,108,862	-
/7	254.0.0.0	33,554,432	33,554,430	-
/8	255.0.0.0	16,777,216	16,777,214	-
/9	255.128.0.0	8,388,608	8,388,606	-
/10	255.192.0.0	4,194,304	4,194,302	-
/11	255.224.0.0	2,097,152	2,097,150	-
/12	255.240.0.0	1,048,576	1,048,574	-
/13	255.248.0.0	524,288	524,286	-
/14	255.252.0.0	262,144	262,142	-
/15	255.254.0.0	131,072	131,070	-
/16	255.255.0.0	65,536	65,534	-
/17	255.255.128.0	32,768	32,766	-
/18	255.255.192.0	16,384	16,382	-
/19	255.255.224.0	8,192	8,190	-
/20	255.255.240.0	4,096	4,094	-
/21	255.255.248.0	2,048	2,046	-
/22	255.255.252.0	1,024	1,022	1
/23	255.255.254.0	512	510	2 split →
/24	255.255.255.0	256	254	4 split →
/25	255.255.255.128	128	126	8 split →
/26	255.255.255.192	64	62	16 split →
/27	255.255.255.224	32	30	32 split →
/28	255.255.255.240	16	14	64 split →
/29	255.255.255.248	8	6	128 split →
/30	255.255.255.252	4	2	256 split →
/31	255.255.255.254	2	2	512 split →
/32	255.255.255.255	1	1	1,024 split →

02 / faq

About this calculator.

How do I use this subnet calculator?

▼

Type an IP address followed by a prefix, like 192.168.1.10/24, or by a subnet mask, like 192.168.1.10 255.255.255.0. Without a prefix it uses /24. Click a row in the table to split the network into smaller subnets.

Why are usable hosts always 2 fewer?

▼

The first address in a subnet is the network address and the last is the broadcast address, so neither can go to a device. The exceptions are /31 (point-to-point links, RFC 3021) and /32 (a single address), which use every address.

Can I use it from a terminal?

▼

Yes. curl 'ipku.in/en/tools/ipv4-subnet-calculator?q=192.168.1.10/24' returns the result as plain text.

Learn how to work it out →