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)10.99.52.0/22

network10.99.52.0/22

broadcast10.99.55.255

first host10.99.52.1

last host10.99.55.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.99.52.0/22

address00001010.01100011.00110100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.01100011.00110100.00000000

broadcast00001010.01100011.00110111.11111111

green = network part, grey = host part

hex0x0a633400

decimal174273536

reverse dns0.52.99.10.in-addr.arpa

ipv4-mapped::ffff:a63:3400

/22 split into /28 · 64 subnets

close ×

#	network	host range	broadcast
1	10.99.52.0/28	10.99.52.1 – 10.99.52.14	10.99.52.15
2	10.99.52.16/28	10.99.52.17 – 10.99.52.30	10.99.52.31
3	10.99.52.32/28	10.99.52.33 – 10.99.52.46	10.99.52.47
4	10.99.52.48/28	10.99.52.49 – 10.99.52.62	10.99.52.63
5	10.99.52.64/28	10.99.52.65 – 10.99.52.78	10.99.52.79
6	10.99.52.80/28	10.99.52.81 – 10.99.52.94	10.99.52.95
7	10.99.52.96/28	10.99.52.97 – 10.99.52.110	10.99.52.111
8	10.99.52.112/28	10.99.52.113 – 10.99.52.126	10.99.52.127
9	10.99.52.128/28	10.99.52.129 – 10.99.52.142	10.99.52.143
10	10.99.52.144/28	10.99.52.145 – 10.99.52.158	10.99.52.159
11	10.99.52.160/28	10.99.52.161 – 10.99.52.174	10.99.52.175
12	10.99.52.176/28	10.99.52.177 – 10.99.52.190	10.99.52.191
13	10.99.52.192/28	10.99.52.193 – 10.99.52.206	10.99.52.207
14	10.99.52.208/28	10.99.52.209 – 10.99.52.222	10.99.52.223
15	10.99.52.224/28	10.99.52.225 – 10.99.52.238	10.99.52.239
16	10.99.52.240/28	10.99.52.241 – 10.99.52.254	10.99.52.255
17	10.99.53.0/28	10.99.53.1 – 10.99.53.14	10.99.53.15
18	10.99.53.16/28	10.99.53.17 – 10.99.53.30	10.99.53.31
19	10.99.53.32/28	10.99.53.33 – 10.99.53.46	10.99.53.47
20	10.99.53.48/28	10.99.53.49 – 10.99.53.62	10.99.53.63
21	10.99.53.64/28	10.99.53.65 – 10.99.53.78	10.99.53.79
22	10.99.53.80/28	10.99.53.81 – 10.99.53.94	10.99.53.95
23	10.99.53.96/28	10.99.53.97 – 10.99.53.110	10.99.53.111
24	10.99.53.112/28	10.99.53.113 – 10.99.53.126	10.99.53.127
25	10.99.53.128/28	10.99.53.129 – 10.99.53.142	10.99.53.143
26	10.99.53.144/28	10.99.53.145 – 10.99.53.158	10.99.53.159
27	10.99.53.160/28	10.99.53.161 – 10.99.53.174	10.99.53.175
28	10.99.53.176/28	10.99.53.177 – 10.99.53.190	10.99.53.191
29	10.99.53.192/28	10.99.53.193 – 10.99.53.206	10.99.53.207
30	10.99.53.208/28	10.99.53.209 – 10.99.53.222	10.99.53.223
31	10.99.53.224/28	10.99.53.225 – 10.99.53.238	10.99.53.239
32	10.99.53.240/28	10.99.53.241 – 10.99.53.254	10.99.53.255
33	10.99.54.0/28	10.99.54.1 – 10.99.54.14	10.99.54.15
34	10.99.54.16/28	10.99.54.17 – 10.99.54.30	10.99.54.31
35	10.99.54.32/28	10.99.54.33 – 10.99.54.46	10.99.54.47
36	10.99.54.48/28	10.99.54.49 – 10.99.54.62	10.99.54.63
37	10.99.54.64/28	10.99.54.65 – 10.99.54.78	10.99.54.79
38	10.99.54.80/28	10.99.54.81 – 10.99.54.94	10.99.54.95
39	10.99.54.96/28	10.99.54.97 – 10.99.54.110	10.99.54.111
40	10.99.54.112/28	10.99.54.113 – 10.99.54.126	10.99.54.127
41	10.99.54.128/28	10.99.54.129 – 10.99.54.142	10.99.54.143
42	10.99.54.144/28	10.99.54.145 – 10.99.54.158	10.99.54.159
43	10.99.54.160/28	10.99.54.161 – 10.99.54.174	10.99.54.175
44	10.99.54.176/28	10.99.54.177 – 10.99.54.190	10.99.54.191
45	10.99.54.192/28	10.99.54.193 – 10.99.54.206	10.99.54.207
46	10.99.54.208/28	10.99.54.209 – 10.99.54.222	10.99.54.223
47	10.99.54.224/28	10.99.54.225 – 10.99.54.238	10.99.54.239
48	10.99.54.240/28	10.99.54.241 – 10.99.54.254	10.99.54.255
49	10.99.55.0/28	10.99.55.1 – 10.99.55.14	10.99.55.15
50	10.99.55.16/28	10.99.55.17 – 10.99.55.30	10.99.55.31
51	10.99.55.32/28	10.99.55.33 – 10.99.55.46	10.99.55.47
52	10.99.55.48/28	10.99.55.49 – 10.99.55.62	10.99.55.63
53	10.99.55.64/28	10.99.55.65 – 10.99.55.78	10.99.55.79
54	10.99.55.80/28	10.99.55.81 – 10.99.55.94	10.99.55.95
55	10.99.55.96/28	10.99.55.97 – 10.99.55.110	10.99.55.111
56	10.99.55.112/28	10.99.55.113 – 10.99.55.126	10.99.55.127
57	10.99.55.128/28	10.99.55.129 – 10.99.55.142	10.99.55.143
58	10.99.55.144/28	10.99.55.145 – 10.99.55.158	10.99.55.159
59	10.99.55.160/28	10.99.55.161 – 10.99.55.174	10.99.55.175
60	10.99.55.176/28	10.99.55.177 – 10.99.55.190	10.99.55.191
61	10.99.55.192/28	10.99.55.193 – 10.99.55.206	10.99.55.207
62	10.99.55.208/28	10.99.55.209 – 10.99.55.222	10.99.55.223
63	10.99.55.224/28	10.99.55.225 – 10.99.55.238	10.99.55.239
64	10.99.55.240/28	10.99.55.241 – 10.99.55.254	10.99.55.255

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 →