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)10.1.116.0/22

network10.1.116.0/22

broadcast10.1.119.255

first host10.1.116.1

last host10.1.119.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.1.116.0/22

address00001010.00000001.01110100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000001.01110100.00000000

broadcast00001010.00000001.01110111.11111111

green = network part, grey = host part

hex0x0a017400

decimal167867392

reverse dns0.116.1.10.in-addr.arpa

ipv4-mapped::ffff:a01:7400

/22 split into /28 · 64 subnets

close ×

#	network	host range	broadcast
1	10.1.116.0/28	10.1.116.1 – 10.1.116.14	10.1.116.15
2	10.1.116.16/28	10.1.116.17 – 10.1.116.30	10.1.116.31
3	10.1.116.32/28	10.1.116.33 – 10.1.116.46	10.1.116.47
4	10.1.116.48/28	10.1.116.49 – 10.1.116.62	10.1.116.63
5	10.1.116.64/28	10.1.116.65 – 10.1.116.78	10.1.116.79
6	10.1.116.80/28	10.1.116.81 – 10.1.116.94	10.1.116.95
7	10.1.116.96/28	10.1.116.97 – 10.1.116.110	10.1.116.111
8	10.1.116.112/28	10.1.116.113 – 10.1.116.126	10.1.116.127
9	10.1.116.128/28	10.1.116.129 – 10.1.116.142	10.1.116.143
10	10.1.116.144/28	10.1.116.145 – 10.1.116.158	10.1.116.159
11	10.1.116.160/28	10.1.116.161 – 10.1.116.174	10.1.116.175
12	10.1.116.176/28	10.1.116.177 – 10.1.116.190	10.1.116.191
13	10.1.116.192/28	10.1.116.193 – 10.1.116.206	10.1.116.207
14	10.1.116.208/28	10.1.116.209 – 10.1.116.222	10.1.116.223
15	10.1.116.224/28	10.1.116.225 – 10.1.116.238	10.1.116.239
16	10.1.116.240/28	10.1.116.241 – 10.1.116.254	10.1.116.255
17	10.1.117.0/28	10.1.117.1 – 10.1.117.14	10.1.117.15
18	10.1.117.16/28	10.1.117.17 – 10.1.117.30	10.1.117.31
19	10.1.117.32/28	10.1.117.33 – 10.1.117.46	10.1.117.47
20	10.1.117.48/28	10.1.117.49 – 10.1.117.62	10.1.117.63
21	10.1.117.64/28	10.1.117.65 – 10.1.117.78	10.1.117.79
22	10.1.117.80/28	10.1.117.81 – 10.1.117.94	10.1.117.95
23	10.1.117.96/28	10.1.117.97 – 10.1.117.110	10.1.117.111
24	10.1.117.112/28	10.1.117.113 – 10.1.117.126	10.1.117.127
25	10.1.117.128/28	10.1.117.129 – 10.1.117.142	10.1.117.143
26	10.1.117.144/28	10.1.117.145 – 10.1.117.158	10.1.117.159
27	10.1.117.160/28	10.1.117.161 – 10.1.117.174	10.1.117.175
28	10.1.117.176/28	10.1.117.177 – 10.1.117.190	10.1.117.191
29	10.1.117.192/28	10.1.117.193 – 10.1.117.206	10.1.117.207
30	10.1.117.208/28	10.1.117.209 – 10.1.117.222	10.1.117.223
31	10.1.117.224/28	10.1.117.225 – 10.1.117.238	10.1.117.239
32	10.1.117.240/28	10.1.117.241 – 10.1.117.254	10.1.117.255
33	10.1.118.0/28	10.1.118.1 – 10.1.118.14	10.1.118.15
34	10.1.118.16/28	10.1.118.17 – 10.1.118.30	10.1.118.31
35	10.1.118.32/28	10.1.118.33 – 10.1.118.46	10.1.118.47
36	10.1.118.48/28	10.1.118.49 – 10.1.118.62	10.1.118.63
37	10.1.118.64/28	10.1.118.65 – 10.1.118.78	10.1.118.79
38	10.1.118.80/28	10.1.118.81 – 10.1.118.94	10.1.118.95
39	10.1.118.96/28	10.1.118.97 – 10.1.118.110	10.1.118.111
40	10.1.118.112/28	10.1.118.113 – 10.1.118.126	10.1.118.127
41	10.1.118.128/28	10.1.118.129 – 10.1.118.142	10.1.118.143
42	10.1.118.144/28	10.1.118.145 – 10.1.118.158	10.1.118.159
43	10.1.118.160/28	10.1.118.161 – 10.1.118.174	10.1.118.175
44	10.1.118.176/28	10.1.118.177 – 10.1.118.190	10.1.118.191
45	10.1.118.192/28	10.1.118.193 – 10.1.118.206	10.1.118.207
46	10.1.118.208/28	10.1.118.209 – 10.1.118.222	10.1.118.223
47	10.1.118.224/28	10.1.118.225 – 10.1.118.238	10.1.118.239
48	10.1.118.240/28	10.1.118.241 – 10.1.118.254	10.1.118.255
49	10.1.119.0/28	10.1.119.1 – 10.1.119.14	10.1.119.15
50	10.1.119.16/28	10.1.119.17 – 10.1.119.30	10.1.119.31
51	10.1.119.32/28	10.1.119.33 – 10.1.119.46	10.1.119.47
52	10.1.119.48/28	10.1.119.49 – 10.1.119.62	10.1.119.63
53	10.1.119.64/28	10.1.119.65 – 10.1.119.78	10.1.119.79
54	10.1.119.80/28	10.1.119.81 – 10.1.119.94	10.1.119.95
55	10.1.119.96/28	10.1.119.97 – 10.1.119.110	10.1.119.111
56	10.1.119.112/28	10.1.119.113 – 10.1.119.126	10.1.119.127
57	10.1.119.128/28	10.1.119.129 – 10.1.119.142	10.1.119.143
58	10.1.119.144/28	10.1.119.145 – 10.1.119.158	10.1.119.159
59	10.1.119.160/28	10.1.119.161 – 10.1.119.174	10.1.119.175
60	10.1.119.176/28	10.1.119.177 – 10.1.119.190	10.1.119.191
61	10.1.119.192/28	10.1.119.193 – 10.1.119.206	10.1.119.207
62	10.1.119.208/28	10.1.119.209 – 10.1.119.222	10.1.119.223
63	10.1.119.224/28	10.1.119.225 – 10.1.119.238	10.1.119.239
64	10.1.119.240/28	10.1.119.241 – 10.1.119.254	10.1.119.255

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 →