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)10.3.156.0/22

network10.3.156.0/22

broadcast10.3.159.255

first host10.3.156.1

last host10.3.159.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.3.156.0/22

address00001010.00000011.10011100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000011.10011100.00000000

broadcast00001010.00000011.10011111.11111111

green = network part, grey = host part

hex0x0a039c00

decimal168008704

reverse dns0.156.3.10.in-addr.arpa

ipv4-mapped::ffff:a03:9c00

/22 split into /32 · 1,024 subnets

close ×

#	network	host range	broadcast
1	10.3.156.0/32	10.3.156.0 – 10.3.156.0	10.3.156.0
2	10.3.156.1/32	10.3.156.1 – 10.3.156.1	10.3.156.1
3	10.3.156.2/32	10.3.156.2 – 10.3.156.2	10.3.156.2
4	10.3.156.3/32	10.3.156.3 – 10.3.156.3	10.3.156.3
5	10.3.156.4/32	10.3.156.4 – 10.3.156.4	10.3.156.4
6	10.3.156.5/32	10.3.156.5 – 10.3.156.5	10.3.156.5
7	10.3.156.6/32	10.3.156.6 – 10.3.156.6	10.3.156.6
8	10.3.156.7/32	10.3.156.7 – 10.3.156.7	10.3.156.7
9	10.3.156.8/32	10.3.156.8 – 10.3.156.8	10.3.156.8
10	10.3.156.9/32	10.3.156.9 – 10.3.156.9	10.3.156.9
11	10.3.156.10/32	10.3.156.10 – 10.3.156.10	10.3.156.10
12	10.3.156.11/32	10.3.156.11 – 10.3.156.11	10.3.156.11
13	10.3.156.12/32	10.3.156.12 – 10.3.156.12	10.3.156.12
14	10.3.156.13/32	10.3.156.13 – 10.3.156.13	10.3.156.13
15	10.3.156.14/32	10.3.156.14 – 10.3.156.14	10.3.156.14
16	10.3.156.15/32	10.3.156.15 – 10.3.156.15	10.3.156.15
17	10.3.156.16/32	10.3.156.16 – 10.3.156.16	10.3.156.16
18	10.3.156.17/32	10.3.156.17 – 10.3.156.17	10.3.156.17
19	10.3.156.18/32	10.3.156.18 – 10.3.156.18	10.3.156.18
20	10.3.156.19/32	10.3.156.19 – 10.3.156.19	10.3.156.19
21	10.3.156.20/32	10.3.156.20 – 10.3.156.20	10.3.156.20
22	10.3.156.21/32	10.3.156.21 – 10.3.156.21	10.3.156.21
23	10.3.156.22/32	10.3.156.22 – 10.3.156.22	10.3.156.22
24	10.3.156.23/32	10.3.156.23 – 10.3.156.23	10.3.156.23
25	10.3.156.24/32	10.3.156.24 – 10.3.156.24	10.3.156.24
26	10.3.156.25/32	10.3.156.25 – 10.3.156.25	10.3.156.25
27	10.3.156.26/32	10.3.156.26 – 10.3.156.26	10.3.156.26
28	10.3.156.27/32	10.3.156.27 – 10.3.156.27	10.3.156.27
29	10.3.156.28/32	10.3.156.28 – 10.3.156.28	10.3.156.28
30	10.3.156.29/32	10.3.156.29 – 10.3.156.29	10.3.156.29
31	10.3.156.30/32	10.3.156.30 – 10.3.156.30	10.3.156.30
32	10.3.156.31/32	10.3.156.31 – 10.3.156.31	10.3.156.31
33	10.3.156.32/32	10.3.156.32 – 10.3.156.32	10.3.156.32
34	10.3.156.33/32	10.3.156.33 – 10.3.156.33	10.3.156.33
35	10.3.156.34/32	10.3.156.34 – 10.3.156.34	10.3.156.34
36	10.3.156.35/32	10.3.156.35 – 10.3.156.35	10.3.156.35
37	10.3.156.36/32	10.3.156.36 – 10.3.156.36	10.3.156.36
38	10.3.156.37/32	10.3.156.37 – 10.3.156.37	10.3.156.37
39	10.3.156.38/32	10.3.156.38 – 10.3.156.38	10.3.156.38
40	10.3.156.39/32	10.3.156.39 – 10.3.156.39	10.3.156.39
41	10.3.156.40/32	10.3.156.40 – 10.3.156.40	10.3.156.40
42	10.3.156.41/32	10.3.156.41 – 10.3.156.41	10.3.156.41
43	10.3.156.42/32	10.3.156.42 – 10.3.156.42	10.3.156.42
44	10.3.156.43/32	10.3.156.43 – 10.3.156.43	10.3.156.43
45	10.3.156.44/32	10.3.156.44 – 10.3.156.44	10.3.156.44
46	10.3.156.45/32	10.3.156.45 – 10.3.156.45	10.3.156.45
47	10.3.156.46/32	10.3.156.46 – 10.3.156.46	10.3.156.46
48	10.3.156.47/32	10.3.156.47 – 10.3.156.47	10.3.156.47
49	10.3.156.48/32	10.3.156.48 – 10.3.156.48	10.3.156.48
50	10.3.156.49/32	10.3.156.49 – 10.3.156.49	10.3.156.49
51	10.3.156.50/32	10.3.156.50 – 10.3.156.50	10.3.156.50
52	10.3.156.51/32	10.3.156.51 – 10.3.156.51	10.3.156.51
53	10.3.156.52/32	10.3.156.52 – 10.3.156.52	10.3.156.52
54	10.3.156.53/32	10.3.156.53 – 10.3.156.53	10.3.156.53
55	10.3.156.54/32	10.3.156.54 – 10.3.156.54	10.3.156.54
56	10.3.156.55/32	10.3.156.55 – 10.3.156.55	10.3.156.55
57	10.3.156.56/32	10.3.156.56 – 10.3.156.56	10.3.156.56
58	10.3.156.57/32	10.3.156.57 – 10.3.156.57	10.3.156.57
59	10.3.156.58/32	10.3.156.58 – 10.3.156.58	10.3.156.58
60	10.3.156.59/32	10.3.156.59 – 10.3.156.59	10.3.156.59
61	10.3.156.60/32	10.3.156.60 – 10.3.156.60	10.3.156.60
62	10.3.156.61/32	10.3.156.61 – 10.3.156.61	10.3.156.61
63	10.3.156.62/32	10.3.156.62 – 10.3.156.62	10.3.156.62
64	10.3.156.63/32	10.3.156.63 – 10.3.156.63	10.3.156.63
65	10.3.156.64/32	10.3.156.64 – 10.3.156.64	10.3.156.64
66	10.3.156.65/32	10.3.156.65 – 10.3.156.65	10.3.156.65
67	10.3.156.66/32	10.3.156.66 – 10.3.156.66	10.3.156.66
68	10.3.156.67/32	10.3.156.67 – 10.3.156.67	10.3.156.67
69	10.3.156.68/32	10.3.156.68 – 10.3.156.68	10.3.156.68
70	10.3.156.69/32	10.3.156.69 – 10.3.156.69	10.3.156.69
71	10.3.156.70/32	10.3.156.70 – 10.3.156.70	10.3.156.70
72	10.3.156.71/32	10.3.156.71 – 10.3.156.71	10.3.156.71
73	10.3.156.72/32	10.3.156.72 – 10.3.156.72	10.3.156.72
74	10.3.156.73/32	10.3.156.73 – 10.3.156.73	10.3.156.73
75	10.3.156.74/32	10.3.156.74 – 10.3.156.74	10.3.156.74
76	10.3.156.75/32	10.3.156.75 – 10.3.156.75	10.3.156.75
77	10.3.156.76/32	10.3.156.76 – 10.3.156.76	10.3.156.76
78	10.3.156.77/32	10.3.156.77 – 10.3.156.77	10.3.156.77
79	10.3.156.78/32	10.3.156.78 – 10.3.156.78	10.3.156.78
80	10.3.156.79/32	10.3.156.79 – 10.3.156.79	10.3.156.79
81	10.3.156.80/32	10.3.156.80 – 10.3.156.80	10.3.156.80
82	10.3.156.81/32	10.3.156.81 – 10.3.156.81	10.3.156.81
83	10.3.156.82/32	10.3.156.82 – 10.3.156.82	10.3.156.82
84	10.3.156.83/32	10.3.156.83 – 10.3.156.83	10.3.156.83
85	10.3.156.84/32	10.3.156.84 – 10.3.156.84	10.3.156.84
86	10.3.156.85/32	10.3.156.85 – 10.3.156.85	10.3.156.85
87	10.3.156.86/32	10.3.156.86 – 10.3.156.86	10.3.156.86
88	10.3.156.87/32	10.3.156.87 – 10.3.156.87	10.3.156.87
89	10.3.156.88/32	10.3.156.88 – 10.3.156.88	10.3.156.88
90	10.3.156.89/32	10.3.156.89 – 10.3.156.89	10.3.156.89
91	10.3.156.90/32	10.3.156.90 – 10.3.156.90	10.3.156.90
92	10.3.156.91/32	10.3.156.91 – 10.3.156.91	10.3.156.91
93	10.3.156.92/32	10.3.156.92 – 10.3.156.92	10.3.156.92
94	10.3.156.93/32	10.3.156.93 – 10.3.156.93	10.3.156.93
95	10.3.156.94/32	10.3.156.94 – 10.3.156.94	10.3.156.94
96	10.3.156.95/32	10.3.156.95 – 10.3.156.95	10.3.156.95
97	10.3.156.96/32	10.3.156.96 – 10.3.156.96	10.3.156.96
98	10.3.156.97/32	10.3.156.97 – 10.3.156.97	10.3.156.97
99	10.3.156.98/32	10.3.156.98 – 10.3.156.98	10.3.156.98
100	10.3.156.99/32	10.3.156.99 – 10.3.156.99	10.3.156.99
101	10.3.156.100/32	10.3.156.100 – 10.3.156.100	10.3.156.100
102	10.3.156.101/32	10.3.156.101 – 10.3.156.101	10.3.156.101
103	10.3.156.102/32	10.3.156.102 – 10.3.156.102	10.3.156.102
104	10.3.156.103/32	10.3.156.103 – 10.3.156.103	10.3.156.103
105	10.3.156.104/32	10.3.156.104 – 10.3.156.104	10.3.156.104
106	10.3.156.105/32	10.3.156.105 – 10.3.156.105	10.3.156.105
107	10.3.156.106/32	10.3.156.106 – 10.3.156.106	10.3.156.106
108	10.3.156.107/32	10.3.156.107 – 10.3.156.107	10.3.156.107
109	10.3.156.108/32	10.3.156.108 – 10.3.156.108	10.3.156.108
110	10.3.156.109/32	10.3.156.109 – 10.3.156.109	10.3.156.109
111	10.3.156.110/32	10.3.156.110 – 10.3.156.110	10.3.156.110
112	10.3.156.111/32	10.3.156.111 – 10.3.156.111	10.3.156.111
113	10.3.156.112/32	10.3.156.112 – 10.3.156.112	10.3.156.112
114	10.3.156.113/32	10.3.156.113 – 10.3.156.113	10.3.156.113
115	10.3.156.114/32	10.3.156.114 – 10.3.156.114	10.3.156.114
116	10.3.156.115/32	10.3.156.115 – 10.3.156.115	10.3.156.115
117	10.3.156.116/32	10.3.156.116 – 10.3.156.116	10.3.156.116
118	10.3.156.117/32	10.3.156.117 – 10.3.156.117	10.3.156.117
119	10.3.156.118/32	10.3.156.118 – 10.3.156.118	10.3.156.118
120	10.3.156.119/32	10.3.156.119 – 10.3.156.119	10.3.156.119
121	10.3.156.120/32	10.3.156.120 – 10.3.156.120	10.3.156.120
122	10.3.156.121/32	10.3.156.121 – 10.3.156.121	10.3.156.121
123	10.3.156.122/32	10.3.156.122 – 10.3.156.122	10.3.156.122
124	10.3.156.123/32	10.3.156.123 – 10.3.156.123	10.3.156.123
125	10.3.156.124/32	10.3.156.124 – 10.3.156.124	10.3.156.124
126	10.3.156.125/32	10.3.156.125 – 10.3.156.125	10.3.156.125
127	10.3.156.126/32	10.3.156.126 – 10.3.156.126	10.3.156.126
128	10.3.156.127/32	10.3.156.127 – 10.3.156.127	10.3.156.127
129	10.3.156.128/32	10.3.156.128 – 10.3.156.128	10.3.156.128
130	10.3.156.129/32	10.3.156.129 – 10.3.156.129	10.3.156.129
131	10.3.156.130/32	10.3.156.130 – 10.3.156.130	10.3.156.130
132	10.3.156.131/32	10.3.156.131 – 10.3.156.131	10.3.156.131
133	10.3.156.132/32	10.3.156.132 – 10.3.156.132	10.3.156.132
134	10.3.156.133/32	10.3.156.133 – 10.3.156.133	10.3.156.133
135	10.3.156.134/32	10.3.156.134 – 10.3.156.134	10.3.156.134
136	10.3.156.135/32	10.3.156.135 – 10.3.156.135	10.3.156.135
137	10.3.156.136/32	10.3.156.136 – 10.3.156.136	10.3.156.136
138	10.3.156.137/32	10.3.156.137 – 10.3.156.137	10.3.156.137
139	10.3.156.138/32	10.3.156.138 – 10.3.156.138	10.3.156.138
140	10.3.156.139/32	10.3.156.139 – 10.3.156.139	10.3.156.139
141	10.3.156.140/32	10.3.156.140 – 10.3.156.140	10.3.156.140
142	10.3.156.141/32	10.3.156.141 – 10.3.156.141	10.3.156.141
143	10.3.156.142/32	10.3.156.142 – 10.3.156.142	10.3.156.142
144	10.3.156.143/32	10.3.156.143 – 10.3.156.143	10.3.156.143
145	10.3.156.144/32	10.3.156.144 – 10.3.156.144	10.3.156.144
146	10.3.156.145/32	10.3.156.145 – 10.3.156.145	10.3.156.145
147	10.3.156.146/32	10.3.156.146 – 10.3.156.146	10.3.156.146
148	10.3.156.147/32	10.3.156.147 – 10.3.156.147	10.3.156.147
149	10.3.156.148/32	10.3.156.148 – 10.3.156.148	10.3.156.148
150	10.3.156.149/32	10.3.156.149 – 10.3.156.149	10.3.156.149
151	10.3.156.150/32	10.3.156.150 – 10.3.156.150	10.3.156.150
152	10.3.156.151/32	10.3.156.151 – 10.3.156.151	10.3.156.151
153	10.3.156.152/32	10.3.156.152 – 10.3.156.152	10.3.156.152
154	10.3.156.153/32	10.3.156.153 – 10.3.156.153	10.3.156.153
155	10.3.156.154/32	10.3.156.154 – 10.3.156.154	10.3.156.154
156	10.3.156.155/32	10.3.156.155 – 10.3.156.155	10.3.156.155
157	10.3.156.156/32	10.3.156.156 – 10.3.156.156	10.3.156.156
158	10.3.156.157/32	10.3.156.157 – 10.3.156.157	10.3.156.157
159	10.3.156.158/32	10.3.156.158 – 10.3.156.158	10.3.156.158
160	10.3.156.159/32	10.3.156.159 – 10.3.156.159	10.3.156.159
161	10.3.156.160/32	10.3.156.160 – 10.3.156.160	10.3.156.160
162	10.3.156.161/32	10.3.156.161 – 10.3.156.161	10.3.156.161
163	10.3.156.162/32	10.3.156.162 – 10.3.156.162	10.3.156.162
164	10.3.156.163/32	10.3.156.163 – 10.3.156.163	10.3.156.163
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167	10.3.156.166/32	10.3.156.166 – 10.3.156.166	10.3.156.166
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170	10.3.156.169/32	10.3.156.169 – 10.3.156.169	10.3.156.169
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210	10.3.156.209/32	10.3.156.209 – 10.3.156.209	10.3.156.209
211	10.3.156.210/32	10.3.156.210 – 10.3.156.210	10.3.156.210
212	10.3.156.211/32	10.3.156.211 – 10.3.156.211	10.3.156.211
213	10.3.156.212/32	10.3.156.212 – 10.3.156.212	10.3.156.212
214	10.3.156.213/32	10.3.156.213 – 10.3.156.213	10.3.156.213
215	10.3.156.214/32	10.3.156.214 – 10.3.156.214	10.3.156.214
216	10.3.156.215/32	10.3.156.215 – 10.3.156.215	10.3.156.215
217	10.3.156.216/32	10.3.156.216 – 10.3.156.216	10.3.156.216
218	10.3.156.217/32	10.3.156.217 – 10.3.156.217	10.3.156.217
219	10.3.156.218/32	10.3.156.218 – 10.3.156.218	10.3.156.218
220	10.3.156.219/32	10.3.156.219 – 10.3.156.219	10.3.156.219
221	10.3.156.220/32	10.3.156.220 – 10.3.156.220	10.3.156.220
222	10.3.156.221/32	10.3.156.221 – 10.3.156.221	10.3.156.221
223	10.3.156.222/32	10.3.156.222 – 10.3.156.222	10.3.156.222
224	10.3.156.223/32	10.3.156.223 – 10.3.156.223	10.3.156.223
225	10.3.156.224/32	10.3.156.224 – 10.3.156.224	10.3.156.224
226	10.3.156.225/32	10.3.156.225 – 10.3.156.225	10.3.156.225
227	10.3.156.226/32	10.3.156.226 – 10.3.156.226	10.3.156.226
228	10.3.156.227/32	10.3.156.227 – 10.3.156.227	10.3.156.227
229	10.3.156.228/32	10.3.156.228 – 10.3.156.228	10.3.156.228
230	10.3.156.229/32	10.3.156.229 – 10.3.156.229	10.3.156.229
231	10.3.156.230/32	10.3.156.230 – 10.3.156.230	10.3.156.230
232	10.3.156.231/32	10.3.156.231 – 10.3.156.231	10.3.156.231
233	10.3.156.232/32	10.3.156.232 – 10.3.156.232	10.3.156.232
234	10.3.156.233/32	10.3.156.233 – 10.3.156.233	10.3.156.233
235	10.3.156.234/32	10.3.156.234 – 10.3.156.234	10.3.156.234
236	10.3.156.235/32	10.3.156.235 – 10.3.156.235	10.3.156.235
237	10.3.156.236/32	10.3.156.236 – 10.3.156.236	10.3.156.236
238	10.3.156.237/32	10.3.156.237 – 10.3.156.237	10.3.156.237
239	10.3.156.238/32	10.3.156.238 – 10.3.156.238	10.3.156.238
240	10.3.156.239/32	10.3.156.239 – 10.3.156.239	10.3.156.239
241	10.3.156.240/32	10.3.156.240 – 10.3.156.240	10.3.156.240
242	10.3.156.241/32	10.3.156.241 – 10.3.156.241	10.3.156.241
243	10.3.156.242/32	10.3.156.242 – 10.3.156.242	10.3.156.242
244	10.3.156.243/32	10.3.156.243 – 10.3.156.243	10.3.156.243
245	10.3.156.244/32	10.3.156.244 – 10.3.156.244	10.3.156.244
246	10.3.156.245/32	10.3.156.245 – 10.3.156.245	10.3.156.245
247	10.3.156.246/32	10.3.156.246 – 10.3.156.246	10.3.156.246
248	10.3.156.247/32	10.3.156.247 – 10.3.156.247	10.3.156.247
249	10.3.156.248/32	10.3.156.248 – 10.3.156.248	10.3.156.248
250	10.3.156.249/32	10.3.156.249 – 10.3.156.249	10.3.156.249
251	10.3.156.250/32	10.3.156.250 – 10.3.156.250	10.3.156.250
252	10.3.156.251/32	10.3.156.251 – 10.3.156.251	10.3.156.251
253	10.3.156.252/32	10.3.156.252 – 10.3.156.252	10.3.156.252
254	10.3.156.253/32	10.3.156.253 – 10.3.156.253	10.3.156.253
255	10.3.156.254/32	10.3.156.254 – 10.3.156.254	10.3.156.254
256	10.3.156.255/32	10.3.156.255 – 10.3.156.255	10.3.156.255

showing 256 of 1,024

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 →