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)10.167.150.0/24

network10.167.150.0/24

broadcast10.167.150.255

first host10.167.150.1

last host10.167.150.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.167.150.0/24

address00001010.10100111.10010110.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.10100111.10010110.00000000

broadcast00001010.10100111.10010110.11111111

green = network part, grey = host part

hex0x0aa79600

decimal178755072

reverse dns0.150.167.10.in-addr.arpa

ipv4-mapped::ffff:aa7:9600

/24 split into /31 · 128 subnets

close ×

#	network	host range	broadcast
1	10.167.150.0/31	10.167.150.0 – 10.167.150.1	10.167.150.1
2	10.167.150.2/31	10.167.150.2 – 10.167.150.3	10.167.150.3
3	10.167.150.4/31	10.167.150.4 – 10.167.150.5	10.167.150.5
4	10.167.150.6/31	10.167.150.6 – 10.167.150.7	10.167.150.7
5	10.167.150.8/31	10.167.150.8 – 10.167.150.9	10.167.150.9
6	10.167.150.10/31	10.167.150.10 – 10.167.150.11	10.167.150.11
7	10.167.150.12/31	10.167.150.12 – 10.167.150.13	10.167.150.13
8	10.167.150.14/31	10.167.150.14 – 10.167.150.15	10.167.150.15
9	10.167.150.16/31	10.167.150.16 – 10.167.150.17	10.167.150.17
10	10.167.150.18/31	10.167.150.18 – 10.167.150.19	10.167.150.19
11	10.167.150.20/31	10.167.150.20 – 10.167.150.21	10.167.150.21
12	10.167.150.22/31	10.167.150.22 – 10.167.150.23	10.167.150.23
13	10.167.150.24/31	10.167.150.24 – 10.167.150.25	10.167.150.25
14	10.167.150.26/31	10.167.150.26 – 10.167.150.27	10.167.150.27
15	10.167.150.28/31	10.167.150.28 – 10.167.150.29	10.167.150.29
16	10.167.150.30/31	10.167.150.30 – 10.167.150.31	10.167.150.31
17	10.167.150.32/31	10.167.150.32 – 10.167.150.33	10.167.150.33
18	10.167.150.34/31	10.167.150.34 – 10.167.150.35	10.167.150.35
19	10.167.150.36/31	10.167.150.36 – 10.167.150.37	10.167.150.37
20	10.167.150.38/31	10.167.150.38 – 10.167.150.39	10.167.150.39
21	10.167.150.40/31	10.167.150.40 – 10.167.150.41	10.167.150.41
22	10.167.150.42/31	10.167.150.42 – 10.167.150.43	10.167.150.43
23	10.167.150.44/31	10.167.150.44 – 10.167.150.45	10.167.150.45
24	10.167.150.46/31	10.167.150.46 – 10.167.150.47	10.167.150.47
25	10.167.150.48/31	10.167.150.48 – 10.167.150.49	10.167.150.49
26	10.167.150.50/31	10.167.150.50 – 10.167.150.51	10.167.150.51
27	10.167.150.52/31	10.167.150.52 – 10.167.150.53	10.167.150.53
28	10.167.150.54/31	10.167.150.54 – 10.167.150.55	10.167.150.55
29	10.167.150.56/31	10.167.150.56 – 10.167.150.57	10.167.150.57
30	10.167.150.58/31	10.167.150.58 – 10.167.150.59	10.167.150.59
31	10.167.150.60/31	10.167.150.60 – 10.167.150.61	10.167.150.61
32	10.167.150.62/31	10.167.150.62 – 10.167.150.63	10.167.150.63
33	10.167.150.64/31	10.167.150.64 – 10.167.150.65	10.167.150.65
34	10.167.150.66/31	10.167.150.66 – 10.167.150.67	10.167.150.67
35	10.167.150.68/31	10.167.150.68 – 10.167.150.69	10.167.150.69
36	10.167.150.70/31	10.167.150.70 – 10.167.150.71	10.167.150.71
37	10.167.150.72/31	10.167.150.72 – 10.167.150.73	10.167.150.73
38	10.167.150.74/31	10.167.150.74 – 10.167.150.75	10.167.150.75
39	10.167.150.76/31	10.167.150.76 – 10.167.150.77	10.167.150.77
40	10.167.150.78/31	10.167.150.78 – 10.167.150.79	10.167.150.79
41	10.167.150.80/31	10.167.150.80 – 10.167.150.81	10.167.150.81
42	10.167.150.82/31	10.167.150.82 – 10.167.150.83	10.167.150.83
43	10.167.150.84/31	10.167.150.84 – 10.167.150.85	10.167.150.85
44	10.167.150.86/31	10.167.150.86 – 10.167.150.87	10.167.150.87
45	10.167.150.88/31	10.167.150.88 – 10.167.150.89	10.167.150.89
46	10.167.150.90/31	10.167.150.90 – 10.167.150.91	10.167.150.91
47	10.167.150.92/31	10.167.150.92 – 10.167.150.93	10.167.150.93
48	10.167.150.94/31	10.167.150.94 – 10.167.150.95	10.167.150.95
49	10.167.150.96/31	10.167.150.96 – 10.167.150.97	10.167.150.97
50	10.167.150.98/31	10.167.150.98 – 10.167.150.99	10.167.150.99
51	10.167.150.100/31	10.167.150.100 – 10.167.150.101	10.167.150.101
52	10.167.150.102/31	10.167.150.102 – 10.167.150.103	10.167.150.103
53	10.167.150.104/31	10.167.150.104 – 10.167.150.105	10.167.150.105
54	10.167.150.106/31	10.167.150.106 – 10.167.150.107	10.167.150.107
55	10.167.150.108/31	10.167.150.108 – 10.167.150.109	10.167.150.109
56	10.167.150.110/31	10.167.150.110 – 10.167.150.111	10.167.150.111
57	10.167.150.112/31	10.167.150.112 – 10.167.150.113	10.167.150.113
58	10.167.150.114/31	10.167.150.114 – 10.167.150.115	10.167.150.115
59	10.167.150.116/31	10.167.150.116 – 10.167.150.117	10.167.150.117
60	10.167.150.118/31	10.167.150.118 – 10.167.150.119	10.167.150.119
61	10.167.150.120/31	10.167.150.120 – 10.167.150.121	10.167.150.121
62	10.167.150.122/31	10.167.150.122 – 10.167.150.123	10.167.150.123
63	10.167.150.124/31	10.167.150.124 – 10.167.150.125	10.167.150.125
64	10.167.150.126/31	10.167.150.126 – 10.167.150.127	10.167.150.127
65	10.167.150.128/31	10.167.150.128 – 10.167.150.129	10.167.150.129
66	10.167.150.130/31	10.167.150.130 – 10.167.150.131	10.167.150.131
67	10.167.150.132/31	10.167.150.132 – 10.167.150.133	10.167.150.133
68	10.167.150.134/31	10.167.150.134 – 10.167.150.135	10.167.150.135
69	10.167.150.136/31	10.167.150.136 – 10.167.150.137	10.167.150.137
70	10.167.150.138/31	10.167.150.138 – 10.167.150.139	10.167.150.139
71	10.167.150.140/31	10.167.150.140 – 10.167.150.141	10.167.150.141
72	10.167.150.142/31	10.167.150.142 – 10.167.150.143	10.167.150.143
73	10.167.150.144/31	10.167.150.144 – 10.167.150.145	10.167.150.145
74	10.167.150.146/31	10.167.150.146 – 10.167.150.147	10.167.150.147
75	10.167.150.148/31	10.167.150.148 – 10.167.150.149	10.167.150.149
76	10.167.150.150/31	10.167.150.150 – 10.167.150.151	10.167.150.151
77	10.167.150.152/31	10.167.150.152 – 10.167.150.153	10.167.150.153
78	10.167.150.154/31	10.167.150.154 – 10.167.150.155	10.167.150.155
79	10.167.150.156/31	10.167.150.156 – 10.167.150.157	10.167.150.157
80	10.167.150.158/31	10.167.150.158 – 10.167.150.159	10.167.150.159
81	10.167.150.160/31	10.167.150.160 – 10.167.150.161	10.167.150.161
82	10.167.150.162/31	10.167.150.162 – 10.167.150.163	10.167.150.163
83	10.167.150.164/31	10.167.150.164 – 10.167.150.165	10.167.150.165
84	10.167.150.166/31	10.167.150.166 – 10.167.150.167	10.167.150.167
85	10.167.150.168/31	10.167.150.168 – 10.167.150.169	10.167.150.169
86	10.167.150.170/31	10.167.150.170 – 10.167.150.171	10.167.150.171
87	10.167.150.172/31	10.167.150.172 – 10.167.150.173	10.167.150.173
88	10.167.150.174/31	10.167.150.174 – 10.167.150.175	10.167.150.175
89	10.167.150.176/31	10.167.150.176 – 10.167.150.177	10.167.150.177
90	10.167.150.178/31	10.167.150.178 – 10.167.150.179	10.167.150.179
91	10.167.150.180/31	10.167.150.180 – 10.167.150.181	10.167.150.181
92	10.167.150.182/31	10.167.150.182 – 10.167.150.183	10.167.150.183
93	10.167.150.184/31	10.167.150.184 – 10.167.150.185	10.167.150.185
94	10.167.150.186/31	10.167.150.186 – 10.167.150.187	10.167.150.187
95	10.167.150.188/31	10.167.150.188 – 10.167.150.189	10.167.150.189
96	10.167.150.190/31	10.167.150.190 – 10.167.150.191	10.167.150.191
97	10.167.150.192/31	10.167.150.192 – 10.167.150.193	10.167.150.193
98	10.167.150.194/31	10.167.150.194 – 10.167.150.195	10.167.150.195
99	10.167.150.196/31	10.167.150.196 – 10.167.150.197	10.167.150.197
100	10.167.150.198/31	10.167.150.198 – 10.167.150.199	10.167.150.199
101	10.167.150.200/31	10.167.150.200 – 10.167.150.201	10.167.150.201
102	10.167.150.202/31	10.167.150.202 – 10.167.150.203	10.167.150.203
103	10.167.150.204/31	10.167.150.204 – 10.167.150.205	10.167.150.205
104	10.167.150.206/31	10.167.150.206 – 10.167.150.207	10.167.150.207
105	10.167.150.208/31	10.167.150.208 – 10.167.150.209	10.167.150.209
106	10.167.150.210/31	10.167.150.210 – 10.167.150.211	10.167.150.211
107	10.167.150.212/31	10.167.150.212 – 10.167.150.213	10.167.150.213
108	10.167.150.214/31	10.167.150.214 – 10.167.150.215	10.167.150.215
109	10.167.150.216/31	10.167.150.216 – 10.167.150.217	10.167.150.217
110	10.167.150.218/31	10.167.150.218 – 10.167.150.219	10.167.150.219
111	10.167.150.220/31	10.167.150.220 – 10.167.150.221	10.167.150.221
112	10.167.150.222/31	10.167.150.222 – 10.167.150.223	10.167.150.223
113	10.167.150.224/31	10.167.150.224 – 10.167.150.225	10.167.150.225
114	10.167.150.226/31	10.167.150.226 – 10.167.150.227	10.167.150.227
115	10.167.150.228/31	10.167.150.228 – 10.167.150.229	10.167.150.229
116	10.167.150.230/31	10.167.150.230 – 10.167.150.231	10.167.150.231
117	10.167.150.232/31	10.167.150.232 – 10.167.150.233	10.167.150.233
118	10.167.150.234/31	10.167.150.234 – 10.167.150.235	10.167.150.235
119	10.167.150.236/31	10.167.150.236 – 10.167.150.237	10.167.150.237
120	10.167.150.238/31	10.167.150.238 – 10.167.150.239	10.167.150.239
121	10.167.150.240/31	10.167.150.240 – 10.167.150.241	10.167.150.241
122	10.167.150.242/31	10.167.150.242 – 10.167.150.243	10.167.150.243
123	10.167.150.244/31	10.167.150.244 – 10.167.150.245	10.167.150.245
124	10.167.150.246/31	10.167.150.246 – 10.167.150.247	10.167.150.247
125	10.167.150.248/31	10.167.150.248 – 10.167.150.249	10.167.150.249
126	10.167.150.250/31	10.167.150.250 – 10.167.150.251	10.167.150.251
127	10.167.150.252/31	10.167.150.252 – 10.167.150.253	10.167.150.253
128	10.167.150.254/31	10.167.150.254 – 10.167.150.255	10.167.150.255

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 /24
/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	-
/23	255.255.254.0	512	510	-
/24	255.255.255.0	256	254	1
/25	255.255.255.128	128	126	2 split →
/26	255.255.255.192	64	62	4 split →
/27	255.255.255.224	32	30	8 split →
/28	255.255.255.240	16	14	16 split →
/29	255.255.255.248	8	6	32 split →
/30	255.255.255.252	4	2	64 split →
/31	255.255.255.254	2	2	128 split →
/32	255.255.255.255	1	1	256 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 →