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)10.4.36.0/22

network10.4.36.0/22

broadcast10.4.39.255

first host10.4.36.1

last host10.4.39.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.4.36.0/22

address00001010.00000100.00100100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000100.00100100.00000000

broadcast00001010.00000100.00100111.11111111

green = network part, grey = host part

hex0x0a042400

decimal168043520

reverse dns0.36.4.10.in-addr.arpa

ipv4-mapped::ffff:a04:2400

/22 split into /29 · 128 subnets

close ×

#	network	host range	broadcast
1	10.4.36.0/29	10.4.36.1 – 10.4.36.6	10.4.36.7
2	10.4.36.8/29	10.4.36.9 – 10.4.36.14	10.4.36.15
3	10.4.36.16/29	10.4.36.17 – 10.4.36.22	10.4.36.23
4	10.4.36.24/29	10.4.36.25 – 10.4.36.30	10.4.36.31
5	10.4.36.32/29	10.4.36.33 – 10.4.36.38	10.4.36.39
6	10.4.36.40/29	10.4.36.41 – 10.4.36.46	10.4.36.47
7	10.4.36.48/29	10.4.36.49 – 10.4.36.54	10.4.36.55
8	10.4.36.56/29	10.4.36.57 – 10.4.36.62	10.4.36.63
9	10.4.36.64/29	10.4.36.65 – 10.4.36.70	10.4.36.71
10	10.4.36.72/29	10.4.36.73 – 10.4.36.78	10.4.36.79
11	10.4.36.80/29	10.4.36.81 – 10.4.36.86	10.4.36.87
12	10.4.36.88/29	10.4.36.89 – 10.4.36.94	10.4.36.95
13	10.4.36.96/29	10.4.36.97 – 10.4.36.102	10.4.36.103
14	10.4.36.104/29	10.4.36.105 – 10.4.36.110	10.4.36.111
15	10.4.36.112/29	10.4.36.113 – 10.4.36.118	10.4.36.119
16	10.4.36.120/29	10.4.36.121 – 10.4.36.126	10.4.36.127
17	10.4.36.128/29	10.4.36.129 – 10.4.36.134	10.4.36.135
18	10.4.36.136/29	10.4.36.137 – 10.4.36.142	10.4.36.143
19	10.4.36.144/29	10.4.36.145 – 10.4.36.150	10.4.36.151
20	10.4.36.152/29	10.4.36.153 – 10.4.36.158	10.4.36.159
21	10.4.36.160/29	10.4.36.161 – 10.4.36.166	10.4.36.167
22	10.4.36.168/29	10.4.36.169 – 10.4.36.174	10.4.36.175
23	10.4.36.176/29	10.4.36.177 – 10.4.36.182	10.4.36.183
24	10.4.36.184/29	10.4.36.185 – 10.4.36.190	10.4.36.191
25	10.4.36.192/29	10.4.36.193 – 10.4.36.198	10.4.36.199
26	10.4.36.200/29	10.4.36.201 – 10.4.36.206	10.4.36.207
27	10.4.36.208/29	10.4.36.209 – 10.4.36.214	10.4.36.215
28	10.4.36.216/29	10.4.36.217 – 10.4.36.222	10.4.36.223
29	10.4.36.224/29	10.4.36.225 – 10.4.36.230	10.4.36.231
30	10.4.36.232/29	10.4.36.233 – 10.4.36.238	10.4.36.239
31	10.4.36.240/29	10.4.36.241 – 10.4.36.246	10.4.36.247
32	10.4.36.248/29	10.4.36.249 – 10.4.36.254	10.4.36.255
33	10.4.37.0/29	10.4.37.1 – 10.4.37.6	10.4.37.7
34	10.4.37.8/29	10.4.37.9 – 10.4.37.14	10.4.37.15
35	10.4.37.16/29	10.4.37.17 – 10.4.37.22	10.4.37.23
36	10.4.37.24/29	10.4.37.25 – 10.4.37.30	10.4.37.31
37	10.4.37.32/29	10.4.37.33 – 10.4.37.38	10.4.37.39
38	10.4.37.40/29	10.4.37.41 – 10.4.37.46	10.4.37.47
39	10.4.37.48/29	10.4.37.49 – 10.4.37.54	10.4.37.55
40	10.4.37.56/29	10.4.37.57 – 10.4.37.62	10.4.37.63
41	10.4.37.64/29	10.4.37.65 – 10.4.37.70	10.4.37.71
42	10.4.37.72/29	10.4.37.73 – 10.4.37.78	10.4.37.79
43	10.4.37.80/29	10.4.37.81 – 10.4.37.86	10.4.37.87
44	10.4.37.88/29	10.4.37.89 – 10.4.37.94	10.4.37.95
45	10.4.37.96/29	10.4.37.97 – 10.4.37.102	10.4.37.103
46	10.4.37.104/29	10.4.37.105 – 10.4.37.110	10.4.37.111
47	10.4.37.112/29	10.4.37.113 – 10.4.37.118	10.4.37.119
48	10.4.37.120/29	10.4.37.121 – 10.4.37.126	10.4.37.127
49	10.4.37.128/29	10.4.37.129 – 10.4.37.134	10.4.37.135
50	10.4.37.136/29	10.4.37.137 – 10.4.37.142	10.4.37.143
51	10.4.37.144/29	10.4.37.145 – 10.4.37.150	10.4.37.151
52	10.4.37.152/29	10.4.37.153 – 10.4.37.158	10.4.37.159
53	10.4.37.160/29	10.4.37.161 – 10.4.37.166	10.4.37.167
54	10.4.37.168/29	10.4.37.169 – 10.4.37.174	10.4.37.175
55	10.4.37.176/29	10.4.37.177 – 10.4.37.182	10.4.37.183
56	10.4.37.184/29	10.4.37.185 – 10.4.37.190	10.4.37.191
57	10.4.37.192/29	10.4.37.193 – 10.4.37.198	10.4.37.199
58	10.4.37.200/29	10.4.37.201 – 10.4.37.206	10.4.37.207
59	10.4.37.208/29	10.4.37.209 – 10.4.37.214	10.4.37.215
60	10.4.37.216/29	10.4.37.217 – 10.4.37.222	10.4.37.223
61	10.4.37.224/29	10.4.37.225 – 10.4.37.230	10.4.37.231
62	10.4.37.232/29	10.4.37.233 – 10.4.37.238	10.4.37.239
63	10.4.37.240/29	10.4.37.241 – 10.4.37.246	10.4.37.247
64	10.4.37.248/29	10.4.37.249 – 10.4.37.254	10.4.37.255
65	10.4.38.0/29	10.4.38.1 – 10.4.38.6	10.4.38.7
66	10.4.38.8/29	10.4.38.9 – 10.4.38.14	10.4.38.15
67	10.4.38.16/29	10.4.38.17 – 10.4.38.22	10.4.38.23
68	10.4.38.24/29	10.4.38.25 – 10.4.38.30	10.4.38.31
69	10.4.38.32/29	10.4.38.33 – 10.4.38.38	10.4.38.39
70	10.4.38.40/29	10.4.38.41 – 10.4.38.46	10.4.38.47
71	10.4.38.48/29	10.4.38.49 – 10.4.38.54	10.4.38.55
72	10.4.38.56/29	10.4.38.57 – 10.4.38.62	10.4.38.63
73	10.4.38.64/29	10.4.38.65 – 10.4.38.70	10.4.38.71
74	10.4.38.72/29	10.4.38.73 – 10.4.38.78	10.4.38.79
75	10.4.38.80/29	10.4.38.81 – 10.4.38.86	10.4.38.87
76	10.4.38.88/29	10.4.38.89 – 10.4.38.94	10.4.38.95
77	10.4.38.96/29	10.4.38.97 – 10.4.38.102	10.4.38.103
78	10.4.38.104/29	10.4.38.105 – 10.4.38.110	10.4.38.111
79	10.4.38.112/29	10.4.38.113 – 10.4.38.118	10.4.38.119
80	10.4.38.120/29	10.4.38.121 – 10.4.38.126	10.4.38.127
81	10.4.38.128/29	10.4.38.129 – 10.4.38.134	10.4.38.135
82	10.4.38.136/29	10.4.38.137 – 10.4.38.142	10.4.38.143
83	10.4.38.144/29	10.4.38.145 – 10.4.38.150	10.4.38.151
84	10.4.38.152/29	10.4.38.153 – 10.4.38.158	10.4.38.159
85	10.4.38.160/29	10.4.38.161 – 10.4.38.166	10.4.38.167
86	10.4.38.168/29	10.4.38.169 – 10.4.38.174	10.4.38.175
87	10.4.38.176/29	10.4.38.177 – 10.4.38.182	10.4.38.183
88	10.4.38.184/29	10.4.38.185 – 10.4.38.190	10.4.38.191
89	10.4.38.192/29	10.4.38.193 – 10.4.38.198	10.4.38.199
90	10.4.38.200/29	10.4.38.201 – 10.4.38.206	10.4.38.207
91	10.4.38.208/29	10.4.38.209 – 10.4.38.214	10.4.38.215
92	10.4.38.216/29	10.4.38.217 – 10.4.38.222	10.4.38.223
93	10.4.38.224/29	10.4.38.225 – 10.4.38.230	10.4.38.231
94	10.4.38.232/29	10.4.38.233 – 10.4.38.238	10.4.38.239
95	10.4.38.240/29	10.4.38.241 – 10.4.38.246	10.4.38.247
96	10.4.38.248/29	10.4.38.249 – 10.4.38.254	10.4.38.255
97	10.4.39.0/29	10.4.39.1 – 10.4.39.6	10.4.39.7
98	10.4.39.8/29	10.4.39.9 – 10.4.39.14	10.4.39.15
99	10.4.39.16/29	10.4.39.17 – 10.4.39.22	10.4.39.23
100	10.4.39.24/29	10.4.39.25 – 10.4.39.30	10.4.39.31
101	10.4.39.32/29	10.4.39.33 – 10.4.39.38	10.4.39.39
102	10.4.39.40/29	10.4.39.41 – 10.4.39.46	10.4.39.47
103	10.4.39.48/29	10.4.39.49 – 10.4.39.54	10.4.39.55
104	10.4.39.56/29	10.4.39.57 – 10.4.39.62	10.4.39.63
105	10.4.39.64/29	10.4.39.65 – 10.4.39.70	10.4.39.71
106	10.4.39.72/29	10.4.39.73 – 10.4.39.78	10.4.39.79
107	10.4.39.80/29	10.4.39.81 – 10.4.39.86	10.4.39.87
108	10.4.39.88/29	10.4.39.89 – 10.4.39.94	10.4.39.95
109	10.4.39.96/29	10.4.39.97 – 10.4.39.102	10.4.39.103
110	10.4.39.104/29	10.4.39.105 – 10.4.39.110	10.4.39.111
111	10.4.39.112/29	10.4.39.113 – 10.4.39.118	10.4.39.119
112	10.4.39.120/29	10.4.39.121 – 10.4.39.126	10.4.39.127
113	10.4.39.128/29	10.4.39.129 – 10.4.39.134	10.4.39.135
114	10.4.39.136/29	10.4.39.137 – 10.4.39.142	10.4.39.143
115	10.4.39.144/29	10.4.39.145 – 10.4.39.150	10.4.39.151
116	10.4.39.152/29	10.4.39.153 – 10.4.39.158	10.4.39.159
117	10.4.39.160/29	10.4.39.161 – 10.4.39.166	10.4.39.167
118	10.4.39.168/29	10.4.39.169 – 10.4.39.174	10.4.39.175
119	10.4.39.176/29	10.4.39.177 – 10.4.39.182	10.4.39.183
120	10.4.39.184/29	10.4.39.185 – 10.4.39.190	10.4.39.191
121	10.4.39.192/29	10.4.39.193 – 10.4.39.198	10.4.39.199
122	10.4.39.200/29	10.4.39.201 – 10.4.39.206	10.4.39.207
123	10.4.39.208/29	10.4.39.209 – 10.4.39.214	10.4.39.215
124	10.4.39.216/29	10.4.39.217 – 10.4.39.222	10.4.39.223
125	10.4.39.224/29	10.4.39.225 – 10.4.39.230	10.4.39.231
126	10.4.39.232/29	10.4.39.233 – 10.4.39.238	10.4.39.239
127	10.4.39.240/29	10.4.39.241 – 10.4.39.246	10.4.39.247
128	10.4.39.248/29	10.4.39.249 – 10.4.39.254	10.4.39.255

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 →