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)10.3.176.0/22

network10.3.176.0/22

broadcast10.3.179.255

first host10.3.176.1

last host10.3.179.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.3.176.0/22

address00001010.00000011.10110000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000011.10110000.00000000

broadcast00001010.00000011.10110011.11111111

green = network part, grey = host part

hex0x0a03b000

decimal168013824

reverse dns0.176.3.10.in-addr.arpa

ipv4-mapped::ffff:a03:b000

/22 split into /29 · 128 subnets

close ×

#	network	host range	broadcast
1	10.3.176.0/29	10.3.176.1 – 10.3.176.6	10.3.176.7
2	10.3.176.8/29	10.3.176.9 – 10.3.176.14	10.3.176.15
3	10.3.176.16/29	10.3.176.17 – 10.3.176.22	10.3.176.23
4	10.3.176.24/29	10.3.176.25 – 10.3.176.30	10.3.176.31
5	10.3.176.32/29	10.3.176.33 – 10.3.176.38	10.3.176.39
6	10.3.176.40/29	10.3.176.41 – 10.3.176.46	10.3.176.47
7	10.3.176.48/29	10.3.176.49 – 10.3.176.54	10.3.176.55
8	10.3.176.56/29	10.3.176.57 – 10.3.176.62	10.3.176.63
9	10.3.176.64/29	10.3.176.65 – 10.3.176.70	10.3.176.71
10	10.3.176.72/29	10.3.176.73 – 10.3.176.78	10.3.176.79
11	10.3.176.80/29	10.3.176.81 – 10.3.176.86	10.3.176.87
12	10.3.176.88/29	10.3.176.89 – 10.3.176.94	10.3.176.95
13	10.3.176.96/29	10.3.176.97 – 10.3.176.102	10.3.176.103
14	10.3.176.104/29	10.3.176.105 – 10.3.176.110	10.3.176.111
15	10.3.176.112/29	10.3.176.113 – 10.3.176.118	10.3.176.119
16	10.3.176.120/29	10.3.176.121 – 10.3.176.126	10.3.176.127
17	10.3.176.128/29	10.3.176.129 – 10.3.176.134	10.3.176.135
18	10.3.176.136/29	10.3.176.137 – 10.3.176.142	10.3.176.143
19	10.3.176.144/29	10.3.176.145 – 10.3.176.150	10.3.176.151
20	10.3.176.152/29	10.3.176.153 – 10.3.176.158	10.3.176.159
21	10.3.176.160/29	10.3.176.161 – 10.3.176.166	10.3.176.167
22	10.3.176.168/29	10.3.176.169 – 10.3.176.174	10.3.176.175
23	10.3.176.176/29	10.3.176.177 – 10.3.176.182	10.3.176.183
24	10.3.176.184/29	10.3.176.185 – 10.3.176.190	10.3.176.191
25	10.3.176.192/29	10.3.176.193 – 10.3.176.198	10.3.176.199
26	10.3.176.200/29	10.3.176.201 – 10.3.176.206	10.3.176.207
27	10.3.176.208/29	10.3.176.209 – 10.3.176.214	10.3.176.215
28	10.3.176.216/29	10.3.176.217 – 10.3.176.222	10.3.176.223
29	10.3.176.224/29	10.3.176.225 – 10.3.176.230	10.3.176.231
30	10.3.176.232/29	10.3.176.233 – 10.3.176.238	10.3.176.239
31	10.3.176.240/29	10.3.176.241 – 10.3.176.246	10.3.176.247
32	10.3.176.248/29	10.3.176.249 – 10.3.176.254	10.3.176.255
33	10.3.177.0/29	10.3.177.1 – 10.3.177.6	10.3.177.7
34	10.3.177.8/29	10.3.177.9 – 10.3.177.14	10.3.177.15
35	10.3.177.16/29	10.3.177.17 – 10.3.177.22	10.3.177.23
36	10.3.177.24/29	10.3.177.25 – 10.3.177.30	10.3.177.31
37	10.3.177.32/29	10.3.177.33 – 10.3.177.38	10.3.177.39
38	10.3.177.40/29	10.3.177.41 – 10.3.177.46	10.3.177.47
39	10.3.177.48/29	10.3.177.49 – 10.3.177.54	10.3.177.55
40	10.3.177.56/29	10.3.177.57 – 10.3.177.62	10.3.177.63
41	10.3.177.64/29	10.3.177.65 – 10.3.177.70	10.3.177.71
42	10.3.177.72/29	10.3.177.73 – 10.3.177.78	10.3.177.79
43	10.3.177.80/29	10.3.177.81 – 10.3.177.86	10.3.177.87
44	10.3.177.88/29	10.3.177.89 – 10.3.177.94	10.3.177.95
45	10.3.177.96/29	10.3.177.97 – 10.3.177.102	10.3.177.103
46	10.3.177.104/29	10.3.177.105 – 10.3.177.110	10.3.177.111
47	10.3.177.112/29	10.3.177.113 – 10.3.177.118	10.3.177.119
48	10.3.177.120/29	10.3.177.121 – 10.3.177.126	10.3.177.127
49	10.3.177.128/29	10.3.177.129 – 10.3.177.134	10.3.177.135
50	10.3.177.136/29	10.3.177.137 – 10.3.177.142	10.3.177.143
51	10.3.177.144/29	10.3.177.145 – 10.3.177.150	10.3.177.151
52	10.3.177.152/29	10.3.177.153 – 10.3.177.158	10.3.177.159
53	10.3.177.160/29	10.3.177.161 – 10.3.177.166	10.3.177.167
54	10.3.177.168/29	10.3.177.169 – 10.3.177.174	10.3.177.175
55	10.3.177.176/29	10.3.177.177 – 10.3.177.182	10.3.177.183
56	10.3.177.184/29	10.3.177.185 – 10.3.177.190	10.3.177.191
57	10.3.177.192/29	10.3.177.193 – 10.3.177.198	10.3.177.199
58	10.3.177.200/29	10.3.177.201 – 10.3.177.206	10.3.177.207
59	10.3.177.208/29	10.3.177.209 – 10.3.177.214	10.3.177.215
60	10.3.177.216/29	10.3.177.217 – 10.3.177.222	10.3.177.223
61	10.3.177.224/29	10.3.177.225 – 10.3.177.230	10.3.177.231
62	10.3.177.232/29	10.3.177.233 – 10.3.177.238	10.3.177.239
63	10.3.177.240/29	10.3.177.241 – 10.3.177.246	10.3.177.247
64	10.3.177.248/29	10.3.177.249 – 10.3.177.254	10.3.177.255
65	10.3.178.0/29	10.3.178.1 – 10.3.178.6	10.3.178.7
66	10.3.178.8/29	10.3.178.9 – 10.3.178.14	10.3.178.15
67	10.3.178.16/29	10.3.178.17 – 10.3.178.22	10.3.178.23
68	10.3.178.24/29	10.3.178.25 – 10.3.178.30	10.3.178.31
69	10.3.178.32/29	10.3.178.33 – 10.3.178.38	10.3.178.39
70	10.3.178.40/29	10.3.178.41 – 10.3.178.46	10.3.178.47
71	10.3.178.48/29	10.3.178.49 – 10.3.178.54	10.3.178.55
72	10.3.178.56/29	10.3.178.57 – 10.3.178.62	10.3.178.63
73	10.3.178.64/29	10.3.178.65 – 10.3.178.70	10.3.178.71
74	10.3.178.72/29	10.3.178.73 – 10.3.178.78	10.3.178.79
75	10.3.178.80/29	10.3.178.81 – 10.3.178.86	10.3.178.87
76	10.3.178.88/29	10.3.178.89 – 10.3.178.94	10.3.178.95
77	10.3.178.96/29	10.3.178.97 – 10.3.178.102	10.3.178.103
78	10.3.178.104/29	10.3.178.105 – 10.3.178.110	10.3.178.111
79	10.3.178.112/29	10.3.178.113 – 10.3.178.118	10.3.178.119
80	10.3.178.120/29	10.3.178.121 – 10.3.178.126	10.3.178.127
81	10.3.178.128/29	10.3.178.129 – 10.3.178.134	10.3.178.135
82	10.3.178.136/29	10.3.178.137 – 10.3.178.142	10.3.178.143
83	10.3.178.144/29	10.3.178.145 – 10.3.178.150	10.3.178.151
84	10.3.178.152/29	10.3.178.153 – 10.3.178.158	10.3.178.159
85	10.3.178.160/29	10.3.178.161 – 10.3.178.166	10.3.178.167
86	10.3.178.168/29	10.3.178.169 – 10.3.178.174	10.3.178.175
87	10.3.178.176/29	10.3.178.177 – 10.3.178.182	10.3.178.183
88	10.3.178.184/29	10.3.178.185 – 10.3.178.190	10.3.178.191
89	10.3.178.192/29	10.3.178.193 – 10.3.178.198	10.3.178.199
90	10.3.178.200/29	10.3.178.201 – 10.3.178.206	10.3.178.207
91	10.3.178.208/29	10.3.178.209 – 10.3.178.214	10.3.178.215
92	10.3.178.216/29	10.3.178.217 – 10.3.178.222	10.3.178.223
93	10.3.178.224/29	10.3.178.225 – 10.3.178.230	10.3.178.231
94	10.3.178.232/29	10.3.178.233 – 10.3.178.238	10.3.178.239
95	10.3.178.240/29	10.3.178.241 – 10.3.178.246	10.3.178.247
96	10.3.178.248/29	10.3.178.249 – 10.3.178.254	10.3.178.255
97	10.3.179.0/29	10.3.179.1 – 10.3.179.6	10.3.179.7
98	10.3.179.8/29	10.3.179.9 – 10.3.179.14	10.3.179.15
99	10.3.179.16/29	10.3.179.17 – 10.3.179.22	10.3.179.23
100	10.3.179.24/29	10.3.179.25 – 10.3.179.30	10.3.179.31
101	10.3.179.32/29	10.3.179.33 – 10.3.179.38	10.3.179.39
102	10.3.179.40/29	10.3.179.41 – 10.3.179.46	10.3.179.47
103	10.3.179.48/29	10.3.179.49 – 10.3.179.54	10.3.179.55
104	10.3.179.56/29	10.3.179.57 – 10.3.179.62	10.3.179.63
105	10.3.179.64/29	10.3.179.65 – 10.3.179.70	10.3.179.71
106	10.3.179.72/29	10.3.179.73 – 10.3.179.78	10.3.179.79
107	10.3.179.80/29	10.3.179.81 – 10.3.179.86	10.3.179.87
108	10.3.179.88/29	10.3.179.89 – 10.3.179.94	10.3.179.95
109	10.3.179.96/29	10.3.179.97 – 10.3.179.102	10.3.179.103
110	10.3.179.104/29	10.3.179.105 – 10.3.179.110	10.3.179.111
111	10.3.179.112/29	10.3.179.113 – 10.3.179.118	10.3.179.119
112	10.3.179.120/29	10.3.179.121 – 10.3.179.126	10.3.179.127
113	10.3.179.128/29	10.3.179.129 – 10.3.179.134	10.3.179.135
114	10.3.179.136/29	10.3.179.137 – 10.3.179.142	10.3.179.143
115	10.3.179.144/29	10.3.179.145 – 10.3.179.150	10.3.179.151
116	10.3.179.152/29	10.3.179.153 – 10.3.179.158	10.3.179.159
117	10.3.179.160/29	10.3.179.161 – 10.3.179.166	10.3.179.167
118	10.3.179.168/29	10.3.179.169 – 10.3.179.174	10.3.179.175
119	10.3.179.176/29	10.3.179.177 – 10.3.179.182	10.3.179.183
120	10.3.179.184/29	10.3.179.185 – 10.3.179.190	10.3.179.191
121	10.3.179.192/29	10.3.179.193 – 10.3.179.198	10.3.179.199
122	10.3.179.200/29	10.3.179.201 – 10.3.179.206	10.3.179.207
123	10.3.179.208/29	10.3.179.209 – 10.3.179.214	10.3.179.215
124	10.3.179.216/29	10.3.179.217 – 10.3.179.222	10.3.179.223
125	10.3.179.224/29	10.3.179.225 – 10.3.179.230	10.3.179.231
126	10.3.179.232/29	10.3.179.233 – 10.3.179.238	10.3.179.239
127	10.3.179.240/29	10.3.179.241 – 10.3.179.246	10.3.179.247
128	10.3.179.248/29	10.3.179.249 – 10.3.179.254	10.3.179.255

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 →