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)10.167.88.0/22

network10.167.88.0/22

broadcast10.167.91.255

first host10.167.88.1

last host10.167.91.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.167.88.0/22

address00001010.10100111.01011000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.10100111.01011000.00000000

broadcast00001010.10100111.01011011.11111111

green = network part, grey = host part

hex0x0aa75800

decimal178739200

reverse dns0.88.167.10.in-addr.arpa

ipv4-mapped::ffff:aa7:5800

/22 split into /28 · 64 subnets

close ×

#	network	host range	broadcast
1	10.167.88.0/28	10.167.88.1 – 10.167.88.14	10.167.88.15
2	10.167.88.16/28	10.167.88.17 – 10.167.88.30	10.167.88.31
3	10.167.88.32/28	10.167.88.33 – 10.167.88.46	10.167.88.47
4	10.167.88.48/28	10.167.88.49 – 10.167.88.62	10.167.88.63
5	10.167.88.64/28	10.167.88.65 – 10.167.88.78	10.167.88.79
6	10.167.88.80/28	10.167.88.81 – 10.167.88.94	10.167.88.95
7	10.167.88.96/28	10.167.88.97 – 10.167.88.110	10.167.88.111
8	10.167.88.112/28	10.167.88.113 – 10.167.88.126	10.167.88.127
9	10.167.88.128/28	10.167.88.129 – 10.167.88.142	10.167.88.143
10	10.167.88.144/28	10.167.88.145 – 10.167.88.158	10.167.88.159
11	10.167.88.160/28	10.167.88.161 – 10.167.88.174	10.167.88.175
12	10.167.88.176/28	10.167.88.177 – 10.167.88.190	10.167.88.191
13	10.167.88.192/28	10.167.88.193 – 10.167.88.206	10.167.88.207
14	10.167.88.208/28	10.167.88.209 – 10.167.88.222	10.167.88.223
15	10.167.88.224/28	10.167.88.225 – 10.167.88.238	10.167.88.239
16	10.167.88.240/28	10.167.88.241 – 10.167.88.254	10.167.88.255
17	10.167.89.0/28	10.167.89.1 – 10.167.89.14	10.167.89.15
18	10.167.89.16/28	10.167.89.17 – 10.167.89.30	10.167.89.31
19	10.167.89.32/28	10.167.89.33 – 10.167.89.46	10.167.89.47
20	10.167.89.48/28	10.167.89.49 – 10.167.89.62	10.167.89.63
21	10.167.89.64/28	10.167.89.65 – 10.167.89.78	10.167.89.79
22	10.167.89.80/28	10.167.89.81 – 10.167.89.94	10.167.89.95
23	10.167.89.96/28	10.167.89.97 – 10.167.89.110	10.167.89.111
24	10.167.89.112/28	10.167.89.113 – 10.167.89.126	10.167.89.127
25	10.167.89.128/28	10.167.89.129 – 10.167.89.142	10.167.89.143
26	10.167.89.144/28	10.167.89.145 – 10.167.89.158	10.167.89.159
27	10.167.89.160/28	10.167.89.161 – 10.167.89.174	10.167.89.175
28	10.167.89.176/28	10.167.89.177 – 10.167.89.190	10.167.89.191
29	10.167.89.192/28	10.167.89.193 – 10.167.89.206	10.167.89.207
30	10.167.89.208/28	10.167.89.209 – 10.167.89.222	10.167.89.223
31	10.167.89.224/28	10.167.89.225 – 10.167.89.238	10.167.89.239
32	10.167.89.240/28	10.167.89.241 – 10.167.89.254	10.167.89.255
33	10.167.90.0/28	10.167.90.1 – 10.167.90.14	10.167.90.15
34	10.167.90.16/28	10.167.90.17 – 10.167.90.30	10.167.90.31
35	10.167.90.32/28	10.167.90.33 – 10.167.90.46	10.167.90.47
36	10.167.90.48/28	10.167.90.49 – 10.167.90.62	10.167.90.63
37	10.167.90.64/28	10.167.90.65 – 10.167.90.78	10.167.90.79
38	10.167.90.80/28	10.167.90.81 – 10.167.90.94	10.167.90.95
39	10.167.90.96/28	10.167.90.97 – 10.167.90.110	10.167.90.111
40	10.167.90.112/28	10.167.90.113 – 10.167.90.126	10.167.90.127
41	10.167.90.128/28	10.167.90.129 – 10.167.90.142	10.167.90.143
42	10.167.90.144/28	10.167.90.145 – 10.167.90.158	10.167.90.159
43	10.167.90.160/28	10.167.90.161 – 10.167.90.174	10.167.90.175
44	10.167.90.176/28	10.167.90.177 – 10.167.90.190	10.167.90.191
45	10.167.90.192/28	10.167.90.193 – 10.167.90.206	10.167.90.207
46	10.167.90.208/28	10.167.90.209 – 10.167.90.222	10.167.90.223
47	10.167.90.224/28	10.167.90.225 – 10.167.90.238	10.167.90.239
48	10.167.90.240/28	10.167.90.241 – 10.167.90.254	10.167.90.255
49	10.167.91.0/28	10.167.91.1 – 10.167.91.14	10.167.91.15
50	10.167.91.16/28	10.167.91.17 – 10.167.91.30	10.167.91.31
51	10.167.91.32/28	10.167.91.33 – 10.167.91.46	10.167.91.47
52	10.167.91.48/28	10.167.91.49 – 10.167.91.62	10.167.91.63
53	10.167.91.64/28	10.167.91.65 – 10.167.91.78	10.167.91.79
54	10.167.91.80/28	10.167.91.81 – 10.167.91.94	10.167.91.95
55	10.167.91.96/28	10.167.91.97 – 10.167.91.110	10.167.91.111
56	10.167.91.112/28	10.167.91.113 – 10.167.91.126	10.167.91.127
57	10.167.91.128/28	10.167.91.129 – 10.167.91.142	10.167.91.143
58	10.167.91.144/28	10.167.91.145 – 10.167.91.158	10.167.91.159
59	10.167.91.160/28	10.167.91.161 – 10.167.91.174	10.167.91.175
60	10.167.91.176/28	10.167.91.177 – 10.167.91.190	10.167.91.191
61	10.167.91.192/28	10.167.91.193 – 10.167.91.206	10.167.91.207
62	10.167.91.208/28	10.167.91.209 – 10.167.91.222	10.167.91.223
63	10.167.91.224/28	10.167.91.225 – 10.167.91.238	10.167.91.239
64	10.167.91.240/28	10.167.91.241 – 10.167.91.254	10.167.91.255

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 →