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)10.76.24.0/22

network10.76.24.0/22

broadcast10.76.27.255

first host10.76.24.1

last host10.76.27.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.76.24.0/22

address00001010.01001100.00011000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.01001100.00011000.00000000

broadcast00001010.01001100.00011011.11111111

green = network part, grey = host part

hex0x0a4c1800

decimal172759040

reverse dns0.24.76.10.in-addr.arpa

ipv4-mapped::ffff:a4c:1800

/22 split into /28 · 64 subnets

close ×

#	network	host range	broadcast
1	10.76.24.0/28	10.76.24.1 – 10.76.24.14	10.76.24.15
2	10.76.24.16/28	10.76.24.17 – 10.76.24.30	10.76.24.31
3	10.76.24.32/28	10.76.24.33 – 10.76.24.46	10.76.24.47
4	10.76.24.48/28	10.76.24.49 – 10.76.24.62	10.76.24.63
5	10.76.24.64/28	10.76.24.65 – 10.76.24.78	10.76.24.79
6	10.76.24.80/28	10.76.24.81 – 10.76.24.94	10.76.24.95
7	10.76.24.96/28	10.76.24.97 – 10.76.24.110	10.76.24.111
8	10.76.24.112/28	10.76.24.113 – 10.76.24.126	10.76.24.127
9	10.76.24.128/28	10.76.24.129 – 10.76.24.142	10.76.24.143
10	10.76.24.144/28	10.76.24.145 – 10.76.24.158	10.76.24.159
11	10.76.24.160/28	10.76.24.161 – 10.76.24.174	10.76.24.175
12	10.76.24.176/28	10.76.24.177 – 10.76.24.190	10.76.24.191
13	10.76.24.192/28	10.76.24.193 – 10.76.24.206	10.76.24.207
14	10.76.24.208/28	10.76.24.209 – 10.76.24.222	10.76.24.223
15	10.76.24.224/28	10.76.24.225 – 10.76.24.238	10.76.24.239
16	10.76.24.240/28	10.76.24.241 – 10.76.24.254	10.76.24.255
17	10.76.25.0/28	10.76.25.1 – 10.76.25.14	10.76.25.15
18	10.76.25.16/28	10.76.25.17 – 10.76.25.30	10.76.25.31
19	10.76.25.32/28	10.76.25.33 – 10.76.25.46	10.76.25.47
20	10.76.25.48/28	10.76.25.49 – 10.76.25.62	10.76.25.63
21	10.76.25.64/28	10.76.25.65 – 10.76.25.78	10.76.25.79
22	10.76.25.80/28	10.76.25.81 – 10.76.25.94	10.76.25.95
23	10.76.25.96/28	10.76.25.97 – 10.76.25.110	10.76.25.111
24	10.76.25.112/28	10.76.25.113 – 10.76.25.126	10.76.25.127
25	10.76.25.128/28	10.76.25.129 – 10.76.25.142	10.76.25.143
26	10.76.25.144/28	10.76.25.145 – 10.76.25.158	10.76.25.159
27	10.76.25.160/28	10.76.25.161 – 10.76.25.174	10.76.25.175
28	10.76.25.176/28	10.76.25.177 – 10.76.25.190	10.76.25.191
29	10.76.25.192/28	10.76.25.193 – 10.76.25.206	10.76.25.207
30	10.76.25.208/28	10.76.25.209 – 10.76.25.222	10.76.25.223
31	10.76.25.224/28	10.76.25.225 – 10.76.25.238	10.76.25.239
32	10.76.25.240/28	10.76.25.241 – 10.76.25.254	10.76.25.255
33	10.76.26.0/28	10.76.26.1 – 10.76.26.14	10.76.26.15
34	10.76.26.16/28	10.76.26.17 – 10.76.26.30	10.76.26.31
35	10.76.26.32/28	10.76.26.33 – 10.76.26.46	10.76.26.47
36	10.76.26.48/28	10.76.26.49 – 10.76.26.62	10.76.26.63
37	10.76.26.64/28	10.76.26.65 – 10.76.26.78	10.76.26.79
38	10.76.26.80/28	10.76.26.81 – 10.76.26.94	10.76.26.95
39	10.76.26.96/28	10.76.26.97 – 10.76.26.110	10.76.26.111
40	10.76.26.112/28	10.76.26.113 – 10.76.26.126	10.76.26.127
41	10.76.26.128/28	10.76.26.129 – 10.76.26.142	10.76.26.143
42	10.76.26.144/28	10.76.26.145 – 10.76.26.158	10.76.26.159
43	10.76.26.160/28	10.76.26.161 – 10.76.26.174	10.76.26.175
44	10.76.26.176/28	10.76.26.177 – 10.76.26.190	10.76.26.191
45	10.76.26.192/28	10.76.26.193 – 10.76.26.206	10.76.26.207
46	10.76.26.208/28	10.76.26.209 – 10.76.26.222	10.76.26.223
47	10.76.26.224/28	10.76.26.225 – 10.76.26.238	10.76.26.239
48	10.76.26.240/28	10.76.26.241 – 10.76.26.254	10.76.26.255
49	10.76.27.0/28	10.76.27.1 – 10.76.27.14	10.76.27.15
50	10.76.27.16/28	10.76.27.17 – 10.76.27.30	10.76.27.31
51	10.76.27.32/28	10.76.27.33 – 10.76.27.46	10.76.27.47
52	10.76.27.48/28	10.76.27.49 – 10.76.27.62	10.76.27.63
53	10.76.27.64/28	10.76.27.65 – 10.76.27.78	10.76.27.79
54	10.76.27.80/28	10.76.27.81 – 10.76.27.94	10.76.27.95
55	10.76.27.96/28	10.76.27.97 – 10.76.27.110	10.76.27.111
56	10.76.27.112/28	10.76.27.113 – 10.76.27.126	10.76.27.127
57	10.76.27.128/28	10.76.27.129 – 10.76.27.142	10.76.27.143
58	10.76.27.144/28	10.76.27.145 – 10.76.27.158	10.76.27.159
59	10.76.27.160/28	10.76.27.161 – 10.76.27.174	10.76.27.175
60	10.76.27.176/28	10.76.27.177 – 10.76.27.190	10.76.27.191
61	10.76.27.192/28	10.76.27.193 – 10.76.27.206	10.76.27.207
62	10.76.27.208/28	10.76.27.209 – 10.76.27.222	10.76.27.223
63	10.76.27.224/28	10.76.27.225 – 10.76.27.238	10.76.27.239
64	10.76.27.240/28	10.76.27.241 – 10.76.27.254	10.76.27.255

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 →