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)10.2.184.0/22

network10.2.184.0/22

broadcast10.2.187.255

first host10.2.184.1

last host10.2.187.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.2.184.0/22

address00001010.00000010.10111000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000010.10111000.00000000

broadcast00001010.00000010.10111011.11111111

green = network part, grey = host part

hex0x0a02b800

decimal167950336

reverse dns0.184.2.10.in-addr.arpa

ipv4-mapped::ffff:a02:b800

/22 split into /29 · 128 subnets

close ×

#	network	host range	broadcast
1	10.2.184.0/29	10.2.184.1 – 10.2.184.6	10.2.184.7
2	10.2.184.8/29	10.2.184.9 – 10.2.184.14	10.2.184.15
3	10.2.184.16/29	10.2.184.17 – 10.2.184.22	10.2.184.23
4	10.2.184.24/29	10.2.184.25 – 10.2.184.30	10.2.184.31
5	10.2.184.32/29	10.2.184.33 – 10.2.184.38	10.2.184.39
6	10.2.184.40/29	10.2.184.41 – 10.2.184.46	10.2.184.47
7	10.2.184.48/29	10.2.184.49 – 10.2.184.54	10.2.184.55
8	10.2.184.56/29	10.2.184.57 – 10.2.184.62	10.2.184.63
9	10.2.184.64/29	10.2.184.65 – 10.2.184.70	10.2.184.71
10	10.2.184.72/29	10.2.184.73 – 10.2.184.78	10.2.184.79
11	10.2.184.80/29	10.2.184.81 – 10.2.184.86	10.2.184.87
12	10.2.184.88/29	10.2.184.89 – 10.2.184.94	10.2.184.95
13	10.2.184.96/29	10.2.184.97 – 10.2.184.102	10.2.184.103
14	10.2.184.104/29	10.2.184.105 – 10.2.184.110	10.2.184.111
15	10.2.184.112/29	10.2.184.113 – 10.2.184.118	10.2.184.119
16	10.2.184.120/29	10.2.184.121 – 10.2.184.126	10.2.184.127
17	10.2.184.128/29	10.2.184.129 – 10.2.184.134	10.2.184.135
18	10.2.184.136/29	10.2.184.137 – 10.2.184.142	10.2.184.143
19	10.2.184.144/29	10.2.184.145 – 10.2.184.150	10.2.184.151
20	10.2.184.152/29	10.2.184.153 – 10.2.184.158	10.2.184.159
21	10.2.184.160/29	10.2.184.161 – 10.2.184.166	10.2.184.167
22	10.2.184.168/29	10.2.184.169 – 10.2.184.174	10.2.184.175
23	10.2.184.176/29	10.2.184.177 – 10.2.184.182	10.2.184.183
24	10.2.184.184/29	10.2.184.185 – 10.2.184.190	10.2.184.191
25	10.2.184.192/29	10.2.184.193 – 10.2.184.198	10.2.184.199
26	10.2.184.200/29	10.2.184.201 – 10.2.184.206	10.2.184.207
27	10.2.184.208/29	10.2.184.209 – 10.2.184.214	10.2.184.215
28	10.2.184.216/29	10.2.184.217 – 10.2.184.222	10.2.184.223
29	10.2.184.224/29	10.2.184.225 – 10.2.184.230	10.2.184.231
30	10.2.184.232/29	10.2.184.233 – 10.2.184.238	10.2.184.239
31	10.2.184.240/29	10.2.184.241 – 10.2.184.246	10.2.184.247
32	10.2.184.248/29	10.2.184.249 – 10.2.184.254	10.2.184.255
33	10.2.185.0/29	10.2.185.1 – 10.2.185.6	10.2.185.7
34	10.2.185.8/29	10.2.185.9 – 10.2.185.14	10.2.185.15
35	10.2.185.16/29	10.2.185.17 – 10.2.185.22	10.2.185.23
36	10.2.185.24/29	10.2.185.25 – 10.2.185.30	10.2.185.31
37	10.2.185.32/29	10.2.185.33 – 10.2.185.38	10.2.185.39
38	10.2.185.40/29	10.2.185.41 – 10.2.185.46	10.2.185.47
39	10.2.185.48/29	10.2.185.49 – 10.2.185.54	10.2.185.55
40	10.2.185.56/29	10.2.185.57 – 10.2.185.62	10.2.185.63
41	10.2.185.64/29	10.2.185.65 – 10.2.185.70	10.2.185.71
42	10.2.185.72/29	10.2.185.73 – 10.2.185.78	10.2.185.79
43	10.2.185.80/29	10.2.185.81 – 10.2.185.86	10.2.185.87
44	10.2.185.88/29	10.2.185.89 – 10.2.185.94	10.2.185.95
45	10.2.185.96/29	10.2.185.97 – 10.2.185.102	10.2.185.103
46	10.2.185.104/29	10.2.185.105 – 10.2.185.110	10.2.185.111
47	10.2.185.112/29	10.2.185.113 – 10.2.185.118	10.2.185.119
48	10.2.185.120/29	10.2.185.121 – 10.2.185.126	10.2.185.127
49	10.2.185.128/29	10.2.185.129 – 10.2.185.134	10.2.185.135
50	10.2.185.136/29	10.2.185.137 – 10.2.185.142	10.2.185.143
51	10.2.185.144/29	10.2.185.145 – 10.2.185.150	10.2.185.151
52	10.2.185.152/29	10.2.185.153 – 10.2.185.158	10.2.185.159
53	10.2.185.160/29	10.2.185.161 – 10.2.185.166	10.2.185.167
54	10.2.185.168/29	10.2.185.169 – 10.2.185.174	10.2.185.175
55	10.2.185.176/29	10.2.185.177 – 10.2.185.182	10.2.185.183
56	10.2.185.184/29	10.2.185.185 – 10.2.185.190	10.2.185.191
57	10.2.185.192/29	10.2.185.193 – 10.2.185.198	10.2.185.199
58	10.2.185.200/29	10.2.185.201 – 10.2.185.206	10.2.185.207
59	10.2.185.208/29	10.2.185.209 – 10.2.185.214	10.2.185.215
60	10.2.185.216/29	10.2.185.217 – 10.2.185.222	10.2.185.223
61	10.2.185.224/29	10.2.185.225 – 10.2.185.230	10.2.185.231
62	10.2.185.232/29	10.2.185.233 – 10.2.185.238	10.2.185.239
63	10.2.185.240/29	10.2.185.241 – 10.2.185.246	10.2.185.247
64	10.2.185.248/29	10.2.185.249 – 10.2.185.254	10.2.185.255
65	10.2.186.0/29	10.2.186.1 – 10.2.186.6	10.2.186.7
66	10.2.186.8/29	10.2.186.9 – 10.2.186.14	10.2.186.15
67	10.2.186.16/29	10.2.186.17 – 10.2.186.22	10.2.186.23
68	10.2.186.24/29	10.2.186.25 – 10.2.186.30	10.2.186.31
69	10.2.186.32/29	10.2.186.33 – 10.2.186.38	10.2.186.39
70	10.2.186.40/29	10.2.186.41 – 10.2.186.46	10.2.186.47
71	10.2.186.48/29	10.2.186.49 – 10.2.186.54	10.2.186.55
72	10.2.186.56/29	10.2.186.57 – 10.2.186.62	10.2.186.63
73	10.2.186.64/29	10.2.186.65 – 10.2.186.70	10.2.186.71
74	10.2.186.72/29	10.2.186.73 – 10.2.186.78	10.2.186.79
75	10.2.186.80/29	10.2.186.81 – 10.2.186.86	10.2.186.87
76	10.2.186.88/29	10.2.186.89 – 10.2.186.94	10.2.186.95
77	10.2.186.96/29	10.2.186.97 – 10.2.186.102	10.2.186.103
78	10.2.186.104/29	10.2.186.105 – 10.2.186.110	10.2.186.111
79	10.2.186.112/29	10.2.186.113 – 10.2.186.118	10.2.186.119
80	10.2.186.120/29	10.2.186.121 – 10.2.186.126	10.2.186.127
81	10.2.186.128/29	10.2.186.129 – 10.2.186.134	10.2.186.135
82	10.2.186.136/29	10.2.186.137 – 10.2.186.142	10.2.186.143
83	10.2.186.144/29	10.2.186.145 – 10.2.186.150	10.2.186.151
84	10.2.186.152/29	10.2.186.153 – 10.2.186.158	10.2.186.159
85	10.2.186.160/29	10.2.186.161 – 10.2.186.166	10.2.186.167
86	10.2.186.168/29	10.2.186.169 – 10.2.186.174	10.2.186.175
87	10.2.186.176/29	10.2.186.177 – 10.2.186.182	10.2.186.183
88	10.2.186.184/29	10.2.186.185 – 10.2.186.190	10.2.186.191
89	10.2.186.192/29	10.2.186.193 – 10.2.186.198	10.2.186.199
90	10.2.186.200/29	10.2.186.201 – 10.2.186.206	10.2.186.207
91	10.2.186.208/29	10.2.186.209 – 10.2.186.214	10.2.186.215
92	10.2.186.216/29	10.2.186.217 – 10.2.186.222	10.2.186.223
93	10.2.186.224/29	10.2.186.225 – 10.2.186.230	10.2.186.231
94	10.2.186.232/29	10.2.186.233 – 10.2.186.238	10.2.186.239
95	10.2.186.240/29	10.2.186.241 – 10.2.186.246	10.2.186.247
96	10.2.186.248/29	10.2.186.249 – 10.2.186.254	10.2.186.255
97	10.2.187.0/29	10.2.187.1 – 10.2.187.6	10.2.187.7
98	10.2.187.8/29	10.2.187.9 – 10.2.187.14	10.2.187.15
99	10.2.187.16/29	10.2.187.17 – 10.2.187.22	10.2.187.23
100	10.2.187.24/29	10.2.187.25 – 10.2.187.30	10.2.187.31
101	10.2.187.32/29	10.2.187.33 – 10.2.187.38	10.2.187.39
102	10.2.187.40/29	10.2.187.41 – 10.2.187.46	10.2.187.47
103	10.2.187.48/29	10.2.187.49 – 10.2.187.54	10.2.187.55
104	10.2.187.56/29	10.2.187.57 – 10.2.187.62	10.2.187.63
105	10.2.187.64/29	10.2.187.65 – 10.2.187.70	10.2.187.71
106	10.2.187.72/29	10.2.187.73 – 10.2.187.78	10.2.187.79
107	10.2.187.80/29	10.2.187.81 – 10.2.187.86	10.2.187.87
108	10.2.187.88/29	10.2.187.89 – 10.2.187.94	10.2.187.95
109	10.2.187.96/29	10.2.187.97 – 10.2.187.102	10.2.187.103
110	10.2.187.104/29	10.2.187.105 – 10.2.187.110	10.2.187.111
111	10.2.187.112/29	10.2.187.113 – 10.2.187.118	10.2.187.119
112	10.2.187.120/29	10.2.187.121 – 10.2.187.126	10.2.187.127
113	10.2.187.128/29	10.2.187.129 – 10.2.187.134	10.2.187.135
114	10.2.187.136/29	10.2.187.137 – 10.2.187.142	10.2.187.143
115	10.2.187.144/29	10.2.187.145 – 10.2.187.150	10.2.187.151
116	10.2.187.152/29	10.2.187.153 – 10.2.187.158	10.2.187.159
117	10.2.187.160/29	10.2.187.161 – 10.2.187.166	10.2.187.167
118	10.2.187.168/29	10.2.187.169 – 10.2.187.174	10.2.187.175
119	10.2.187.176/29	10.2.187.177 – 10.2.187.182	10.2.187.183
120	10.2.187.184/29	10.2.187.185 – 10.2.187.190	10.2.187.191
121	10.2.187.192/29	10.2.187.193 – 10.2.187.198	10.2.187.199
122	10.2.187.200/29	10.2.187.201 – 10.2.187.206	10.2.187.207
123	10.2.187.208/29	10.2.187.209 – 10.2.187.214	10.2.187.215
124	10.2.187.216/29	10.2.187.217 – 10.2.187.222	10.2.187.223
125	10.2.187.224/29	10.2.187.225 – 10.2.187.230	10.2.187.231
126	10.2.187.232/29	10.2.187.233 – 10.2.187.238	10.2.187.239
127	10.2.187.240/29	10.2.187.241 – 10.2.187.246	10.2.187.247
128	10.2.187.248/29	10.2.187.249 – 10.2.187.254	10.2.187.255

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 →