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)10.3.112.0/22

network10.3.112.0/22

broadcast10.3.115.255

first host10.3.112.1

last host10.3.115.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.3.112.0/22

address00001010.00000011.01110000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000011.01110000.00000000

broadcast00001010.00000011.01110011.11111111

green = network part, grey = host part

hex0x0a037000

decimal167997440

reverse dns0.112.3.10.in-addr.arpa

ipv4-mapped::ffff:a03:7000

/22 split into /29 · 128 subnets

close ×

#	network	host range	broadcast
1	10.3.112.0/29	10.3.112.1 – 10.3.112.6	10.3.112.7
2	10.3.112.8/29	10.3.112.9 – 10.3.112.14	10.3.112.15
3	10.3.112.16/29	10.3.112.17 – 10.3.112.22	10.3.112.23
4	10.3.112.24/29	10.3.112.25 – 10.3.112.30	10.3.112.31
5	10.3.112.32/29	10.3.112.33 – 10.3.112.38	10.3.112.39
6	10.3.112.40/29	10.3.112.41 – 10.3.112.46	10.3.112.47
7	10.3.112.48/29	10.3.112.49 – 10.3.112.54	10.3.112.55
8	10.3.112.56/29	10.3.112.57 – 10.3.112.62	10.3.112.63
9	10.3.112.64/29	10.3.112.65 – 10.3.112.70	10.3.112.71
10	10.3.112.72/29	10.3.112.73 – 10.3.112.78	10.3.112.79
11	10.3.112.80/29	10.3.112.81 – 10.3.112.86	10.3.112.87
12	10.3.112.88/29	10.3.112.89 – 10.3.112.94	10.3.112.95
13	10.3.112.96/29	10.3.112.97 – 10.3.112.102	10.3.112.103
14	10.3.112.104/29	10.3.112.105 – 10.3.112.110	10.3.112.111
15	10.3.112.112/29	10.3.112.113 – 10.3.112.118	10.3.112.119
16	10.3.112.120/29	10.3.112.121 – 10.3.112.126	10.3.112.127
17	10.3.112.128/29	10.3.112.129 – 10.3.112.134	10.3.112.135
18	10.3.112.136/29	10.3.112.137 – 10.3.112.142	10.3.112.143
19	10.3.112.144/29	10.3.112.145 – 10.3.112.150	10.3.112.151
20	10.3.112.152/29	10.3.112.153 – 10.3.112.158	10.3.112.159
21	10.3.112.160/29	10.3.112.161 – 10.3.112.166	10.3.112.167
22	10.3.112.168/29	10.3.112.169 – 10.3.112.174	10.3.112.175
23	10.3.112.176/29	10.3.112.177 – 10.3.112.182	10.3.112.183
24	10.3.112.184/29	10.3.112.185 – 10.3.112.190	10.3.112.191
25	10.3.112.192/29	10.3.112.193 – 10.3.112.198	10.3.112.199
26	10.3.112.200/29	10.3.112.201 – 10.3.112.206	10.3.112.207
27	10.3.112.208/29	10.3.112.209 – 10.3.112.214	10.3.112.215
28	10.3.112.216/29	10.3.112.217 – 10.3.112.222	10.3.112.223
29	10.3.112.224/29	10.3.112.225 – 10.3.112.230	10.3.112.231
30	10.3.112.232/29	10.3.112.233 – 10.3.112.238	10.3.112.239
31	10.3.112.240/29	10.3.112.241 – 10.3.112.246	10.3.112.247
32	10.3.112.248/29	10.3.112.249 – 10.3.112.254	10.3.112.255
33	10.3.113.0/29	10.3.113.1 – 10.3.113.6	10.3.113.7
34	10.3.113.8/29	10.3.113.9 – 10.3.113.14	10.3.113.15
35	10.3.113.16/29	10.3.113.17 – 10.3.113.22	10.3.113.23
36	10.3.113.24/29	10.3.113.25 – 10.3.113.30	10.3.113.31
37	10.3.113.32/29	10.3.113.33 – 10.3.113.38	10.3.113.39
38	10.3.113.40/29	10.3.113.41 – 10.3.113.46	10.3.113.47
39	10.3.113.48/29	10.3.113.49 – 10.3.113.54	10.3.113.55
40	10.3.113.56/29	10.3.113.57 – 10.3.113.62	10.3.113.63
41	10.3.113.64/29	10.3.113.65 – 10.3.113.70	10.3.113.71
42	10.3.113.72/29	10.3.113.73 – 10.3.113.78	10.3.113.79
43	10.3.113.80/29	10.3.113.81 – 10.3.113.86	10.3.113.87
44	10.3.113.88/29	10.3.113.89 – 10.3.113.94	10.3.113.95
45	10.3.113.96/29	10.3.113.97 – 10.3.113.102	10.3.113.103
46	10.3.113.104/29	10.3.113.105 – 10.3.113.110	10.3.113.111
47	10.3.113.112/29	10.3.113.113 – 10.3.113.118	10.3.113.119
48	10.3.113.120/29	10.3.113.121 – 10.3.113.126	10.3.113.127
49	10.3.113.128/29	10.3.113.129 – 10.3.113.134	10.3.113.135
50	10.3.113.136/29	10.3.113.137 – 10.3.113.142	10.3.113.143
51	10.3.113.144/29	10.3.113.145 – 10.3.113.150	10.3.113.151
52	10.3.113.152/29	10.3.113.153 – 10.3.113.158	10.3.113.159
53	10.3.113.160/29	10.3.113.161 – 10.3.113.166	10.3.113.167
54	10.3.113.168/29	10.3.113.169 – 10.3.113.174	10.3.113.175
55	10.3.113.176/29	10.3.113.177 – 10.3.113.182	10.3.113.183
56	10.3.113.184/29	10.3.113.185 – 10.3.113.190	10.3.113.191
57	10.3.113.192/29	10.3.113.193 – 10.3.113.198	10.3.113.199
58	10.3.113.200/29	10.3.113.201 – 10.3.113.206	10.3.113.207
59	10.3.113.208/29	10.3.113.209 – 10.3.113.214	10.3.113.215
60	10.3.113.216/29	10.3.113.217 – 10.3.113.222	10.3.113.223
61	10.3.113.224/29	10.3.113.225 – 10.3.113.230	10.3.113.231
62	10.3.113.232/29	10.3.113.233 – 10.3.113.238	10.3.113.239
63	10.3.113.240/29	10.3.113.241 – 10.3.113.246	10.3.113.247
64	10.3.113.248/29	10.3.113.249 – 10.3.113.254	10.3.113.255
65	10.3.114.0/29	10.3.114.1 – 10.3.114.6	10.3.114.7
66	10.3.114.8/29	10.3.114.9 – 10.3.114.14	10.3.114.15
67	10.3.114.16/29	10.3.114.17 – 10.3.114.22	10.3.114.23
68	10.3.114.24/29	10.3.114.25 – 10.3.114.30	10.3.114.31
69	10.3.114.32/29	10.3.114.33 – 10.3.114.38	10.3.114.39
70	10.3.114.40/29	10.3.114.41 – 10.3.114.46	10.3.114.47
71	10.3.114.48/29	10.3.114.49 – 10.3.114.54	10.3.114.55
72	10.3.114.56/29	10.3.114.57 – 10.3.114.62	10.3.114.63
73	10.3.114.64/29	10.3.114.65 – 10.3.114.70	10.3.114.71
74	10.3.114.72/29	10.3.114.73 – 10.3.114.78	10.3.114.79
75	10.3.114.80/29	10.3.114.81 – 10.3.114.86	10.3.114.87
76	10.3.114.88/29	10.3.114.89 – 10.3.114.94	10.3.114.95
77	10.3.114.96/29	10.3.114.97 – 10.3.114.102	10.3.114.103
78	10.3.114.104/29	10.3.114.105 – 10.3.114.110	10.3.114.111
79	10.3.114.112/29	10.3.114.113 – 10.3.114.118	10.3.114.119
80	10.3.114.120/29	10.3.114.121 – 10.3.114.126	10.3.114.127
81	10.3.114.128/29	10.3.114.129 – 10.3.114.134	10.3.114.135
82	10.3.114.136/29	10.3.114.137 – 10.3.114.142	10.3.114.143
83	10.3.114.144/29	10.3.114.145 – 10.3.114.150	10.3.114.151
84	10.3.114.152/29	10.3.114.153 – 10.3.114.158	10.3.114.159
85	10.3.114.160/29	10.3.114.161 – 10.3.114.166	10.3.114.167
86	10.3.114.168/29	10.3.114.169 – 10.3.114.174	10.3.114.175
87	10.3.114.176/29	10.3.114.177 – 10.3.114.182	10.3.114.183
88	10.3.114.184/29	10.3.114.185 – 10.3.114.190	10.3.114.191
89	10.3.114.192/29	10.3.114.193 – 10.3.114.198	10.3.114.199
90	10.3.114.200/29	10.3.114.201 – 10.3.114.206	10.3.114.207
91	10.3.114.208/29	10.3.114.209 – 10.3.114.214	10.3.114.215
92	10.3.114.216/29	10.3.114.217 – 10.3.114.222	10.3.114.223
93	10.3.114.224/29	10.3.114.225 – 10.3.114.230	10.3.114.231
94	10.3.114.232/29	10.3.114.233 – 10.3.114.238	10.3.114.239
95	10.3.114.240/29	10.3.114.241 – 10.3.114.246	10.3.114.247
96	10.3.114.248/29	10.3.114.249 – 10.3.114.254	10.3.114.255
97	10.3.115.0/29	10.3.115.1 – 10.3.115.6	10.3.115.7
98	10.3.115.8/29	10.3.115.9 – 10.3.115.14	10.3.115.15
99	10.3.115.16/29	10.3.115.17 – 10.3.115.22	10.3.115.23
100	10.3.115.24/29	10.3.115.25 – 10.3.115.30	10.3.115.31
101	10.3.115.32/29	10.3.115.33 – 10.3.115.38	10.3.115.39
102	10.3.115.40/29	10.3.115.41 – 10.3.115.46	10.3.115.47
103	10.3.115.48/29	10.3.115.49 – 10.3.115.54	10.3.115.55
104	10.3.115.56/29	10.3.115.57 – 10.3.115.62	10.3.115.63
105	10.3.115.64/29	10.3.115.65 – 10.3.115.70	10.3.115.71
106	10.3.115.72/29	10.3.115.73 – 10.3.115.78	10.3.115.79
107	10.3.115.80/29	10.3.115.81 – 10.3.115.86	10.3.115.87
108	10.3.115.88/29	10.3.115.89 – 10.3.115.94	10.3.115.95
109	10.3.115.96/29	10.3.115.97 – 10.3.115.102	10.3.115.103
110	10.3.115.104/29	10.3.115.105 – 10.3.115.110	10.3.115.111
111	10.3.115.112/29	10.3.115.113 – 10.3.115.118	10.3.115.119
112	10.3.115.120/29	10.3.115.121 – 10.3.115.126	10.3.115.127
113	10.3.115.128/29	10.3.115.129 – 10.3.115.134	10.3.115.135
114	10.3.115.136/29	10.3.115.137 – 10.3.115.142	10.3.115.143
115	10.3.115.144/29	10.3.115.145 – 10.3.115.150	10.3.115.151
116	10.3.115.152/29	10.3.115.153 – 10.3.115.158	10.3.115.159
117	10.3.115.160/29	10.3.115.161 – 10.3.115.166	10.3.115.167
118	10.3.115.168/29	10.3.115.169 – 10.3.115.174	10.3.115.175
119	10.3.115.176/29	10.3.115.177 – 10.3.115.182	10.3.115.183
120	10.3.115.184/29	10.3.115.185 – 10.3.115.190	10.3.115.191
121	10.3.115.192/29	10.3.115.193 – 10.3.115.198	10.3.115.199
122	10.3.115.200/29	10.3.115.201 – 10.3.115.206	10.3.115.207
123	10.3.115.208/29	10.3.115.209 – 10.3.115.214	10.3.115.215
124	10.3.115.216/29	10.3.115.217 – 10.3.115.222	10.3.115.223
125	10.3.115.224/29	10.3.115.225 – 10.3.115.230	10.3.115.231
126	10.3.115.232/29	10.3.115.233 – 10.3.115.238	10.3.115.239
127	10.3.115.240/29	10.3.115.241 – 10.3.115.246	10.3.115.247
128	10.3.115.248/29	10.3.115.249 – 10.3.115.254	10.3.115.255

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 →