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)10.28.232.0/22

network10.28.232.0/22

broadcast10.28.235.255

first host10.28.232.1

last host10.28.235.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.28.232.0/22

address00001010.00011100.11101000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00011100.11101000.00000000

broadcast00001010.00011100.11101011.11111111

green = network part, grey = host part

hex0x0a1ce800

decimal169666560

reverse dns0.232.28.10.in-addr.arpa

ipv4-mapped::ffff:a1c:e800

/22 split into /29 · 128 subnets

close ×

#	network	host range	broadcast
1	10.28.232.0/29	10.28.232.1 – 10.28.232.6	10.28.232.7
2	10.28.232.8/29	10.28.232.9 – 10.28.232.14	10.28.232.15
3	10.28.232.16/29	10.28.232.17 – 10.28.232.22	10.28.232.23
4	10.28.232.24/29	10.28.232.25 – 10.28.232.30	10.28.232.31
5	10.28.232.32/29	10.28.232.33 – 10.28.232.38	10.28.232.39
6	10.28.232.40/29	10.28.232.41 – 10.28.232.46	10.28.232.47
7	10.28.232.48/29	10.28.232.49 – 10.28.232.54	10.28.232.55
8	10.28.232.56/29	10.28.232.57 – 10.28.232.62	10.28.232.63
9	10.28.232.64/29	10.28.232.65 – 10.28.232.70	10.28.232.71
10	10.28.232.72/29	10.28.232.73 – 10.28.232.78	10.28.232.79
11	10.28.232.80/29	10.28.232.81 – 10.28.232.86	10.28.232.87
12	10.28.232.88/29	10.28.232.89 – 10.28.232.94	10.28.232.95
13	10.28.232.96/29	10.28.232.97 – 10.28.232.102	10.28.232.103
14	10.28.232.104/29	10.28.232.105 – 10.28.232.110	10.28.232.111
15	10.28.232.112/29	10.28.232.113 – 10.28.232.118	10.28.232.119
16	10.28.232.120/29	10.28.232.121 – 10.28.232.126	10.28.232.127
17	10.28.232.128/29	10.28.232.129 – 10.28.232.134	10.28.232.135
18	10.28.232.136/29	10.28.232.137 – 10.28.232.142	10.28.232.143
19	10.28.232.144/29	10.28.232.145 – 10.28.232.150	10.28.232.151
20	10.28.232.152/29	10.28.232.153 – 10.28.232.158	10.28.232.159
21	10.28.232.160/29	10.28.232.161 – 10.28.232.166	10.28.232.167
22	10.28.232.168/29	10.28.232.169 – 10.28.232.174	10.28.232.175
23	10.28.232.176/29	10.28.232.177 – 10.28.232.182	10.28.232.183
24	10.28.232.184/29	10.28.232.185 – 10.28.232.190	10.28.232.191
25	10.28.232.192/29	10.28.232.193 – 10.28.232.198	10.28.232.199
26	10.28.232.200/29	10.28.232.201 – 10.28.232.206	10.28.232.207
27	10.28.232.208/29	10.28.232.209 – 10.28.232.214	10.28.232.215
28	10.28.232.216/29	10.28.232.217 – 10.28.232.222	10.28.232.223
29	10.28.232.224/29	10.28.232.225 – 10.28.232.230	10.28.232.231
30	10.28.232.232/29	10.28.232.233 – 10.28.232.238	10.28.232.239
31	10.28.232.240/29	10.28.232.241 – 10.28.232.246	10.28.232.247
32	10.28.232.248/29	10.28.232.249 – 10.28.232.254	10.28.232.255
33	10.28.233.0/29	10.28.233.1 – 10.28.233.6	10.28.233.7
34	10.28.233.8/29	10.28.233.9 – 10.28.233.14	10.28.233.15
35	10.28.233.16/29	10.28.233.17 – 10.28.233.22	10.28.233.23
36	10.28.233.24/29	10.28.233.25 – 10.28.233.30	10.28.233.31
37	10.28.233.32/29	10.28.233.33 – 10.28.233.38	10.28.233.39
38	10.28.233.40/29	10.28.233.41 – 10.28.233.46	10.28.233.47
39	10.28.233.48/29	10.28.233.49 – 10.28.233.54	10.28.233.55
40	10.28.233.56/29	10.28.233.57 – 10.28.233.62	10.28.233.63
41	10.28.233.64/29	10.28.233.65 – 10.28.233.70	10.28.233.71
42	10.28.233.72/29	10.28.233.73 – 10.28.233.78	10.28.233.79
43	10.28.233.80/29	10.28.233.81 – 10.28.233.86	10.28.233.87
44	10.28.233.88/29	10.28.233.89 – 10.28.233.94	10.28.233.95
45	10.28.233.96/29	10.28.233.97 – 10.28.233.102	10.28.233.103
46	10.28.233.104/29	10.28.233.105 – 10.28.233.110	10.28.233.111
47	10.28.233.112/29	10.28.233.113 – 10.28.233.118	10.28.233.119
48	10.28.233.120/29	10.28.233.121 – 10.28.233.126	10.28.233.127
49	10.28.233.128/29	10.28.233.129 – 10.28.233.134	10.28.233.135
50	10.28.233.136/29	10.28.233.137 – 10.28.233.142	10.28.233.143
51	10.28.233.144/29	10.28.233.145 – 10.28.233.150	10.28.233.151
52	10.28.233.152/29	10.28.233.153 – 10.28.233.158	10.28.233.159
53	10.28.233.160/29	10.28.233.161 – 10.28.233.166	10.28.233.167
54	10.28.233.168/29	10.28.233.169 – 10.28.233.174	10.28.233.175
55	10.28.233.176/29	10.28.233.177 – 10.28.233.182	10.28.233.183
56	10.28.233.184/29	10.28.233.185 – 10.28.233.190	10.28.233.191
57	10.28.233.192/29	10.28.233.193 – 10.28.233.198	10.28.233.199
58	10.28.233.200/29	10.28.233.201 – 10.28.233.206	10.28.233.207
59	10.28.233.208/29	10.28.233.209 – 10.28.233.214	10.28.233.215
60	10.28.233.216/29	10.28.233.217 – 10.28.233.222	10.28.233.223
61	10.28.233.224/29	10.28.233.225 – 10.28.233.230	10.28.233.231
62	10.28.233.232/29	10.28.233.233 – 10.28.233.238	10.28.233.239
63	10.28.233.240/29	10.28.233.241 – 10.28.233.246	10.28.233.247
64	10.28.233.248/29	10.28.233.249 – 10.28.233.254	10.28.233.255
65	10.28.234.0/29	10.28.234.1 – 10.28.234.6	10.28.234.7
66	10.28.234.8/29	10.28.234.9 – 10.28.234.14	10.28.234.15
67	10.28.234.16/29	10.28.234.17 – 10.28.234.22	10.28.234.23
68	10.28.234.24/29	10.28.234.25 – 10.28.234.30	10.28.234.31
69	10.28.234.32/29	10.28.234.33 – 10.28.234.38	10.28.234.39
70	10.28.234.40/29	10.28.234.41 – 10.28.234.46	10.28.234.47
71	10.28.234.48/29	10.28.234.49 – 10.28.234.54	10.28.234.55
72	10.28.234.56/29	10.28.234.57 – 10.28.234.62	10.28.234.63
73	10.28.234.64/29	10.28.234.65 – 10.28.234.70	10.28.234.71
74	10.28.234.72/29	10.28.234.73 – 10.28.234.78	10.28.234.79
75	10.28.234.80/29	10.28.234.81 – 10.28.234.86	10.28.234.87
76	10.28.234.88/29	10.28.234.89 – 10.28.234.94	10.28.234.95
77	10.28.234.96/29	10.28.234.97 – 10.28.234.102	10.28.234.103
78	10.28.234.104/29	10.28.234.105 – 10.28.234.110	10.28.234.111
79	10.28.234.112/29	10.28.234.113 – 10.28.234.118	10.28.234.119
80	10.28.234.120/29	10.28.234.121 – 10.28.234.126	10.28.234.127
81	10.28.234.128/29	10.28.234.129 – 10.28.234.134	10.28.234.135
82	10.28.234.136/29	10.28.234.137 – 10.28.234.142	10.28.234.143
83	10.28.234.144/29	10.28.234.145 – 10.28.234.150	10.28.234.151
84	10.28.234.152/29	10.28.234.153 – 10.28.234.158	10.28.234.159
85	10.28.234.160/29	10.28.234.161 – 10.28.234.166	10.28.234.167
86	10.28.234.168/29	10.28.234.169 – 10.28.234.174	10.28.234.175
87	10.28.234.176/29	10.28.234.177 – 10.28.234.182	10.28.234.183
88	10.28.234.184/29	10.28.234.185 – 10.28.234.190	10.28.234.191
89	10.28.234.192/29	10.28.234.193 – 10.28.234.198	10.28.234.199
90	10.28.234.200/29	10.28.234.201 – 10.28.234.206	10.28.234.207
91	10.28.234.208/29	10.28.234.209 – 10.28.234.214	10.28.234.215
92	10.28.234.216/29	10.28.234.217 – 10.28.234.222	10.28.234.223
93	10.28.234.224/29	10.28.234.225 – 10.28.234.230	10.28.234.231
94	10.28.234.232/29	10.28.234.233 – 10.28.234.238	10.28.234.239
95	10.28.234.240/29	10.28.234.241 – 10.28.234.246	10.28.234.247
96	10.28.234.248/29	10.28.234.249 – 10.28.234.254	10.28.234.255
97	10.28.235.0/29	10.28.235.1 – 10.28.235.6	10.28.235.7
98	10.28.235.8/29	10.28.235.9 – 10.28.235.14	10.28.235.15
99	10.28.235.16/29	10.28.235.17 – 10.28.235.22	10.28.235.23
100	10.28.235.24/29	10.28.235.25 – 10.28.235.30	10.28.235.31
101	10.28.235.32/29	10.28.235.33 – 10.28.235.38	10.28.235.39
102	10.28.235.40/29	10.28.235.41 – 10.28.235.46	10.28.235.47
103	10.28.235.48/29	10.28.235.49 – 10.28.235.54	10.28.235.55
104	10.28.235.56/29	10.28.235.57 – 10.28.235.62	10.28.235.63
105	10.28.235.64/29	10.28.235.65 – 10.28.235.70	10.28.235.71
106	10.28.235.72/29	10.28.235.73 – 10.28.235.78	10.28.235.79
107	10.28.235.80/29	10.28.235.81 – 10.28.235.86	10.28.235.87
108	10.28.235.88/29	10.28.235.89 – 10.28.235.94	10.28.235.95
109	10.28.235.96/29	10.28.235.97 – 10.28.235.102	10.28.235.103
110	10.28.235.104/29	10.28.235.105 – 10.28.235.110	10.28.235.111
111	10.28.235.112/29	10.28.235.113 – 10.28.235.118	10.28.235.119
112	10.28.235.120/29	10.28.235.121 – 10.28.235.126	10.28.235.127
113	10.28.235.128/29	10.28.235.129 – 10.28.235.134	10.28.235.135
114	10.28.235.136/29	10.28.235.137 – 10.28.235.142	10.28.235.143
115	10.28.235.144/29	10.28.235.145 – 10.28.235.150	10.28.235.151
116	10.28.235.152/29	10.28.235.153 – 10.28.235.158	10.28.235.159
117	10.28.235.160/29	10.28.235.161 – 10.28.235.166	10.28.235.167
118	10.28.235.168/29	10.28.235.169 – 10.28.235.174	10.28.235.175
119	10.28.235.176/29	10.28.235.177 – 10.28.235.182	10.28.235.183
120	10.28.235.184/29	10.28.235.185 – 10.28.235.190	10.28.235.191
121	10.28.235.192/29	10.28.235.193 – 10.28.235.198	10.28.235.199
122	10.28.235.200/29	10.28.235.201 – 10.28.235.206	10.28.235.207
123	10.28.235.208/29	10.28.235.209 – 10.28.235.214	10.28.235.215
124	10.28.235.216/29	10.28.235.217 – 10.28.235.222	10.28.235.223
125	10.28.235.224/29	10.28.235.225 – 10.28.235.230	10.28.235.231
126	10.28.235.232/29	10.28.235.233 – 10.28.235.238	10.28.235.239
127	10.28.235.240/29	10.28.235.241 – 10.28.235.246	10.28.235.247
128	10.28.235.248/29	10.28.235.249 – 10.28.235.254	10.28.235.255

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 →