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)10.1.152.0/22

network10.1.152.0/22

broadcast10.1.155.255

first host10.1.152.1

last host10.1.155.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.1.152.0/22

address00001010.00000001.10011000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000001.10011000.00000000

broadcast00001010.00000001.10011011.11111111

green = network part, grey = host part

hex0x0a019800

decimal167876608

reverse dns0.152.1.10.in-addr.arpa

ipv4-mapped::ffff:a01:9800

/22 split into /28 · 64 subnets

close ×

#	network	host range	broadcast
1	10.1.152.0/28	10.1.152.1 – 10.1.152.14	10.1.152.15
2	10.1.152.16/28	10.1.152.17 – 10.1.152.30	10.1.152.31
3	10.1.152.32/28	10.1.152.33 – 10.1.152.46	10.1.152.47
4	10.1.152.48/28	10.1.152.49 – 10.1.152.62	10.1.152.63
5	10.1.152.64/28	10.1.152.65 – 10.1.152.78	10.1.152.79
6	10.1.152.80/28	10.1.152.81 – 10.1.152.94	10.1.152.95
7	10.1.152.96/28	10.1.152.97 – 10.1.152.110	10.1.152.111
8	10.1.152.112/28	10.1.152.113 – 10.1.152.126	10.1.152.127
9	10.1.152.128/28	10.1.152.129 – 10.1.152.142	10.1.152.143
10	10.1.152.144/28	10.1.152.145 – 10.1.152.158	10.1.152.159
11	10.1.152.160/28	10.1.152.161 – 10.1.152.174	10.1.152.175
12	10.1.152.176/28	10.1.152.177 – 10.1.152.190	10.1.152.191
13	10.1.152.192/28	10.1.152.193 – 10.1.152.206	10.1.152.207
14	10.1.152.208/28	10.1.152.209 – 10.1.152.222	10.1.152.223
15	10.1.152.224/28	10.1.152.225 – 10.1.152.238	10.1.152.239
16	10.1.152.240/28	10.1.152.241 – 10.1.152.254	10.1.152.255
17	10.1.153.0/28	10.1.153.1 – 10.1.153.14	10.1.153.15
18	10.1.153.16/28	10.1.153.17 – 10.1.153.30	10.1.153.31
19	10.1.153.32/28	10.1.153.33 – 10.1.153.46	10.1.153.47
20	10.1.153.48/28	10.1.153.49 – 10.1.153.62	10.1.153.63
21	10.1.153.64/28	10.1.153.65 – 10.1.153.78	10.1.153.79
22	10.1.153.80/28	10.1.153.81 – 10.1.153.94	10.1.153.95
23	10.1.153.96/28	10.1.153.97 – 10.1.153.110	10.1.153.111
24	10.1.153.112/28	10.1.153.113 – 10.1.153.126	10.1.153.127
25	10.1.153.128/28	10.1.153.129 – 10.1.153.142	10.1.153.143
26	10.1.153.144/28	10.1.153.145 – 10.1.153.158	10.1.153.159
27	10.1.153.160/28	10.1.153.161 – 10.1.153.174	10.1.153.175
28	10.1.153.176/28	10.1.153.177 – 10.1.153.190	10.1.153.191
29	10.1.153.192/28	10.1.153.193 – 10.1.153.206	10.1.153.207
30	10.1.153.208/28	10.1.153.209 – 10.1.153.222	10.1.153.223
31	10.1.153.224/28	10.1.153.225 – 10.1.153.238	10.1.153.239
32	10.1.153.240/28	10.1.153.241 – 10.1.153.254	10.1.153.255
33	10.1.154.0/28	10.1.154.1 – 10.1.154.14	10.1.154.15
34	10.1.154.16/28	10.1.154.17 – 10.1.154.30	10.1.154.31
35	10.1.154.32/28	10.1.154.33 – 10.1.154.46	10.1.154.47
36	10.1.154.48/28	10.1.154.49 – 10.1.154.62	10.1.154.63
37	10.1.154.64/28	10.1.154.65 – 10.1.154.78	10.1.154.79
38	10.1.154.80/28	10.1.154.81 – 10.1.154.94	10.1.154.95
39	10.1.154.96/28	10.1.154.97 – 10.1.154.110	10.1.154.111
40	10.1.154.112/28	10.1.154.113 – 10.1.154.126	10.1.154.127
41	10.1.154.128/28	10.1.154.129 – 10.1.154.142	10.1.154.143
42	10.1.154.144/28	10.1.154.145 – 10.1.154.158	10.1.154.159
43	10.1.154.160/28	10.1.154.161 – 10.1.154.174	10.1.154.175
44	10.1.154.176/28	10.1.154.177 – 10.1.154.190	10.1.154.191
45	10.1.154.192/28	10.1.154.193 – 10.1.154.206	10.1.154.207
46	10.1.154.208/28	10.1.154.209 – 10.1.154.222	10.1.154.223
47	10.1.154.224/28	10.1.154.225 – 10.1.154.238	10.1.154.239
48	10.1.154.240/28	10.1.154.241 – 10.1.154.254	10.1.154.255
49	10.1.155.0/28	10.1.155.1 – 10.1.155.14	10.1.155.15
50	10.1.155.16/28	10.1.155.17 – 10.1.155.30	10.1.155.31
51	10.1.155.32/28	10.1.155.33 – 10.1.155.46	10.1.155.47
52	10.1.155.48/28	10.1.155.49 – 10.1.155.62	10.1.155.63
53	10.1.155.64/28	10.1.155.65 – 10.1.155.78	10.1.155.79
54	10.1.155.80/28	10.1.155.81 – 10.1.155.94	10.1.155.95
55	10.1.155.96/28	10.1.155.97 – 10.1.155.110	10.1.155.111
56	10.1.155.112/28	10.1.155.113 – 10.1.155.126	10.1.155.127
57	10.1.155.128/28	10.1.155.129 – 10.1.155.142	10.1.155.143
58	10.1.155.144/28	10.1.155.145 – 10.1.155.158	10.1.155.159
59	10.1.155.160/28	10.1.155.161 – 10.1.155.174	10.1.155.175
60	10.1.155.176/28	10.1.155.177 – 10.1.155.190	10.1.155.191
61	10.1.155.192/28	10.1.155.193 – 10.1.155.206	10.1.155.207
62	10.1.155.208/28	10.1.155.209 – 10.1.155.222	10.1.155.223
63	10.1.155.224/28	10.1.155.225 – 10.1.155.238	10.1.155.239
64	10.1.155.240/28	10.1.155.241 – 10.1.155.254	10.1.155.255

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 →