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)10.167.118.0/23

network10.167.118.0/23

broadcast10.167.119.255

first host10.167.118.1

last host10.167.119.254

subnet mask255.255.254.0

wildcard0.0.1.255

addresses512

usable hosts510

classA

ipcalc 10.167.118.0/23

address00001010.10100111.01110110.00000000

subnet mask11111111.11111111.11111110.00000000

network00001010.10100111.01110110.00000000

broadcast00001010.10100111.01110111.11111111

green = network part, grey = host part

hex0x0aa77600

decimal178746880

reverse dns0.118.167.10.in-addr.arpa

ipv4-mapped::ffff:aa7:7600

/23 split into /32 · 512 subnets

close ×

#	network	host range	broadcast
1	10.167.118.0/32	10.167.118.0 – 10.167.118.0	10.167.118.0
2	10.167.118.1/32	10.167.118.1 – 10.167.118.1	10.167.118.1
3	10.167.118.2/32	10.167.118.2 – 10.167.118.2	10.167.118.2
4	10.167.118.3/32	10.167.118.3 – 10.167.118.3	10.167.118.3
5	10.167.118.4/32	10.167.118.4 – 10.167.118.4	10.167.118.4
6	10.167.118.5/32	10.167.118.5 – 10.167.118.5	10.167.118.5
7	10.167.118.6/32	10.167.118.6 – 10.167.118.6	10.167.118.6
8	10.167.118.7/32	10.167.118.7 – 10.167.118.7	10.167.118.7
9	10.167.118.8/32	10.167.118.8 – 10.167.118.8	10.167.118.8
10	10.167.118.9/32	10.167.118.9 – 10.167.118.9	10.167.118.9
11	10.167.118.10/32	10.167.118.10 – 10.167.118.10	10.167.118.10
12	10.167.118.11/32	10.167.118.11 – 10.167.118.11	10.167.118.11
13	10.167.118.12/32	10.167.118.12 – 10.167.118.12	10.167.118.12
14	10.167.118.13/32	10.167.118.13 – 10.167.118.13	10.167.118.13
15	10.167.118.14/32	10.167.118.14 – 10.167.118.14	10.167.118.14
16	10.167.118.15/32	10.167.118.15 – 10.167.118.15	10.167.118.15
17	10.167.118.16/32	10.167.118.16 – 10.167.118.16	10.167.118.16
18	10.167.118.17/32	10.167.118.17 – 10.167.118.17	10.167.118.17
19	10.167.118.18/32	10.167.118.18 – 10.167.118.18	10.167.118.18
20	10.167.118.19/32	10.167.118.19 – 10.167.118.19	10.167.118.19
21	10.167.118.20/32	10.167.118.20 – 10.167.118.20	10.167.118.20
22	10.167.118.21/32	10.167.118.21 – 10.167.118.21	10.167.118.21
23	10.167.118.22/32	10.167.118.22 – 10.167.118.22	10.167.118.22
24	10.167.118.23/32	10.167.118.23 – 10.167.118.23	10.167.118.23
25	10.167.118.24/32	10.167.118.24 – 10.167.118.24	10.167.118.24
26	10.167.118.25/32	10.167.118.25 – 10.167.118.25	10.167.118.25
27	10.167.118.26/32	10.167.118.26 – 10.167.118.26	10.167.118.26
28	10.167.118.27/32	10.167.118.27 – 10.167.118.27	10.167.118.27
29	10.167.118.28/32	10.167.118.28 – 10.167.118.28	10.167.118.28
30	10.167.118.29/32	10.167.118.29 – 10.167.118.29	10.167.118.29
31	10.167.118.30/32	10.167.118.30 – 10.167.118.30	10.167.118.30
32	10.167.118.31/32	10.167.118.31 – 10.167.118.31	10.167.118.31
33	10.167.118.32/32	10.167.118.32 – 10.167.118.32	10.167.118.32
34	10.167.118.33/32	10.167.118.33 – 10.167.118.33	10.167.118.33
35	10.167.118.34/32	10.167.118.34 – 10.167.118.34	10.167.118.34
36	10.167.118.35/32	10.167.118.35 – 10.167.118.35	10.167.118.35
37	10.167.118.36/32	10.167.118.36 – 10.167.118.36	10.167.118.36
38	10.167.118.37/32	10.167.118.37 – 10.167.118.37	10.167.118.37
39	10.167.118.38/32	10.167.118.38 – 10.167.118.38	10.167.118.38
40	10.167.118.39/32	10.167.118.39 – 10.167.118.39	10.167.118.39
41	10.167.118.40/32	10.167.118.40 – 10.167.118.40	10.167.118.40
42	10.167.118.41/32	10.167.118.41 – 10.167.118.41	10.167.118.41
43	10.167.118.42/32	10.167.118.42 – 10.167.118.42	10.167.118.42
44	10.167.118.43/32	10.167.118.43 – 10.167.118.43	10.167.118.43
45	10.167.118.44/32	10.167.118.44 – 10.167.118.44	10.167.118.44
46	10.167.118.45/32	10.167.118.45 – 10.167.118.45	10.167.118.45
47	10.167.118.46/32	10.167.118.46 – 10.167.118.46	10.167.118.46
48	10.167.118.47/32	10.167.118.47 – 10.167.118.47	10.167.118.47
49	10.167.118.48/32	10.167.118.48 – 10.167.118.48	10.167.118.48
50	10.167.118.49/32	10.167.118.49 – 10.167.118.49	10.167.118.49
51	10.167.118.50/32	10.167.118.50 – 10.167.118.50	10.167.118.50
52	10.167.118.51/32	10.167.118.51 – 10.167.118.51	10.167.118.51
53	10.167.118.52/32	10.167.118.52 – 10.167.118.52	10.167.118.52
54	10.167.118.53/32	10.167.118.53 – 10.167.118.53	10.167.118.53
55	10.167.118.54/32	10.167.118.54 – 10.167.118.54	10.167.118.54
56	10.167.118.55/32	10.167.118.55 – 10.167.118.55	10.167.118.55
57	10.167.118.56/32	10.167.118.56 – 10.167.118.56	10.167.118.56
58	10.167.118.57/32	10.167.118.57 – 10.167.118.57	10.167.118.57
59	10.167.118.58/32	10.167.118.58 – 10.167.118.58	10.167.118.58
60	10.167.118.59/32	10.167.118.59 – 10.167.118.59	10.167.118.59
61	10.167.118.60/32	10.167.118.60 – 10.167.118.60	10.167.118.60
62	10.167.118.61/32	10.167.118.61 – 10.167.118.61	10.167.118.61
63	10.167.118.62/32	10.167.118.62 – 10.167.118.62	10.167.118.62
64	10.167.118.63/32	10.167.118.63 – 10.167.118.63	10.167.118.63
65	10.167.118.64/32	10.167.118.64 – 10.167.118.64	10.167.118.64
66	10.167.118.65/32	10.167.118.65 – 10.167.118.65	10.167.118.65
67	10.167.118.66/32	10.167.118.66 – 10.167.118.66	10.167.118.66
68	10.167.118.67/32	10.167.118.67 – 10.167.118.67	10.167.118.67
69	10.167.118.68/32	10.167.118.68 – 10.167.118.68	10.167.118.68
70	10.167.118.69/32	10.167.118.69 – 10.167.118.69	10.167.118.69
71	10.167.118.70/32	10.167.118.70 – 10.167.118.70	10.167.118.70
72	10.167.118.71/32	10.167.118.71 – 10.167.118.71	10.167.118.71
73	10.167.118.72/32	10.167.118.72 – 10.167.118.72	10.167.118.72
74	10.167.118.73/32	10.167.118.73 – 10.167.118.73	10.167.118.73
75	10.167.118.74/32	10.167.118.74 – 10.167.118.74	10.167.118.74
76	10.167.118.75/32	10.167.118.75 – 10.167.118.75	10.167.118.75
77	10.167.118.76/32	10.167.118.76 – 10.167.118.76	10.167.118.76
78	10.167.118.77/32	10.167.118.77 – 10.167.118.77	10.167.118.77
79	10.167.118.78/32	10.167.118.78 – 10.167.118.78	10.167.118.78
80	10.167.118.79/32	10.167.118.79 – 10.167.118.79	10.167.118.79
81	10.167.118.80/32	10.167.118.80 – 10.167.118.80	10.167.118.80
82	10.167.118.81/32	10.167.118.81 – 10.167.118.81	10.167.118.81
83	10.167.118.82/32	10.167.118.82 – 10.167.118.82	10.167.118.82
84	10.167.118.83/32	10.167.118.83 – 10.167.118.83	10.167.118.83
85	10.167.118.84/32	10.167.118.84 – 10.167.118.84	10.167.118.84
86	10.167.118.85/32	10.167.118.85 – 10.167.118.85	10.167.118.85
87	10.167.118.86/32	10.167.118.86 – 10.167.118.86	10.167.118.86
88	10.167.118.87/32	10.167.118.87 – 10.167.118.87	10.167.118.87
89	10.167.118.88/32	10.167.118.88 – 10.167.118.88	10.167.118.88
90	10.167.118.89/32	10.167.118.89 – 10.167.118.89	10.167.118.89
91	10.167.118.90/32	10.167.118.90 – 10.167.118.90	10.167.118.90
92	10.167.118.91/32	10.167.118.91 – 10.167.118.91	10.167.118.91
93	10.167.118.92/32	10.167.118.92 – 10.167.118.92	10.167.118.92
94	10.167.118.93/32	10.167.118.93 – 10.167.118.93	10.167.118.93
95	10.167.118.94/32	10.167.118.94 – 10.167.118.94	10.167.118.94
96	10.167.118.95/32	10.167.118.95 – 10.167.118.95	10.167.118.95
97	10.167.118.96/32	10.167.118.96 – 10.167.118.96	10.167.118.96
98	10.167.118.97/32	10.167.118.97 – 10.167.118.97	10.167.118.97
99	10.167.118.98/32	10.167.118.98 – 10.167.118.98	10.167.118.98
100	10.167.118.99/32	10.167.118.99 – 10.167.118.99	10.167.118.99
101	10.167.118.100/32	10.167.118.100 – 10.167.118.100	10.167.118.100
102	10.167.118.101/32	10.167.118.101 – 10.167.118.101	10.167.118.101
103	10.167.118.102/32	10.167.118.102 – 10.167.118.102	10.167.118.102
104	10.167.118.103/32	10.167.118.103 – 10.167.118.103	10.167.118.103
105	10.167.118.104/32	10.167.118.104 – 10.167.118.104	10.167.118.104
106	10.167.118.105/32	10.167.118.105 – 10.167.118.105	10.167.118.105
107	10.167.118.106/32	10.167.118.106 – 10.167.118.106	10.167.118.106
108	10.167.118.107/32	10.167.118.107 – 10.167.118.107	10.167.118.107
109	10.167.118.108/32	10.167.118.108 – 10.167.118.108	10.167.118.108
110	10.167.118.109/32	10.167.118.109 – 10.167.118.109	10.167.118.109
111	10.167.118.110/32	10.167.118.110 – 10.167.118.110	10.167.118.110
112	10.167.118.111/32	10.167.118.111 – 10.167.118.111	10.167.118.111
113	10.167.118.112/32	10.167.118.112 – 10.167.118.112	10.167.118.112
114	10.167.118.113/32	10.167.118.113 – 10.167.118.113	10.167.118.113
115	10.167.118.114/32	10.167.118.114 – 10.167.118.114	10.167.118.114
116	10.167.118.115/32	10.167.118.115 – 10.167.118.115	10.167.118.115
117	10.167.118.116/32	10.167.118.116 – 10.167.118.116	10.167.118.116
118	10.167.118.117/32	10.167.118.117 – 10.167.118.117	10.167.118.117
119	10.167.118.118/32	10.167.118.118 – 10.167.118.118	10.167.118.118
120	10.167.118.119/32	10.167.118.119 – 10.167.118.119	10.167.118.119
121	10.167.118.120/32	10.167.118.120 – 10.167.118.120	10.167.118.120
122	10.167.118.121/32	10.167.118.121 – 10.167.118.121	10.167.118.121
123	10.167.118.122/32	10.167.118.122 – 10.167.118.122	10.167.118.122
124	10.167.118.123/32	10.167.118.123 – 10.167.118.123	10.167.118.123
125	10.167.118.124/32	10.167.118.124 – 10.167.118.124	10.167.118.124
126	10.167.118.125/32	10.167.118.125 – 10.167.118.125	10.167.118.125
127	10.167.118.126/32	10.167.118.126 – 10.167.118.126	10.167.118.126
128	10.167.118.127/32	10.167.118.127 – 10.167.118.127	10.167.118.127
129	10.167.118.128/32	10.167.118.128 – 10.167.118.128	10.167.118.128
130	10.167.118.129/32	10.167.118.129 – 10.167.118.129	10.167.118.129
131	10.167.118.130/32	10.167.118.130 – 10.167.118.130	10.167.118.130
132	10.167.118.131/32	10.167.118.131 – 10.167.118.131	10.167.118.131
133	10.167.118.132/32	10.167.118.132 – 10.167.118.132	10.167.118.132
134	10.167.118.133/32	10.167.118.133 – 10.167.118.133	10.167.118.133
135	10.167.118.134/32	10.167.118.134 – 10.167.118.134	10.167.118.134
136	10.167.118.135/32	10.167.118.135 – 10.167.118.135	10.167.118.135
137	10.167.118.136/32	10.167.118.136 – 10.167.118.136	10.167.118.136
138	10.167.118.137/32	10.167.118.137 – 10.167.118.137	10.167.118.137
139	10.167.118.138/32	10.167.118.138 – 10.167.118.138	10.167.118.138
140	10.167.118.139/32	10.167.118.139 – 10.167.118.139	10.167.118.139
141	10.167.118.140/32	10.167.118.140 – 10.167.118.140	10.167.118.140
142	10.167.118.141/32	10.167.118.141 – 10.167.118.141	10.167.118.141
143	10.167.118.142/32	10.167.118.142 – 10.167.118.142	10.167.118.142
144	10.167.118.143/32	10.167.118.143 – 10.167.118.143	10.167.118.143
145	10.167.118.144/32	10.167.118.144 – 10.167.118.144	10.167.118.144
146	10.167.118.145/32	10.167.118.145 – 10.167.118.145	10.167.118.145
147	10.167.118.146/32	10.167.118.146 – 10.167.118.146	10.167.118.146
148	10.167.118.147/32	10.167.118.147 – 10.167.118.147	10.167.118.147
149	10.167.118.148/32	10.167.118.148 – 10.167.118.148	10.167.118.148
150	10.167.118.149/32	10.167.118.149 – 10.167.118.149	10.167.118.149
151	10.167.118.150/32	10.167.118.150 – 10.167.118.150	10.167.118.150
152	10.167.118.151/32	10.167.118.151 – 10.167.118.151	10.167.118.151
153	10.167.118.152/32	10.167.118.152 – 10.167.118.152	10.167.118.152
154	10.167.118.153/32	10.167.118.153 – 10.167.118.153	10.167.118.153
155	10.167.118.154/32	10.167.118.154 – 10.167.118.154	10.167.118.154
156	10.167.118.155/32	10.167.118.155 – 10.167.118.155	10.167.118.155
157	10.167.118.156/32	10.167.118.156 – 10.167.118.156	10.167.118.156
158	10.167.118.157/32	10.167.118.157 – 10.167.118.157	10.167.118.157
159	10.167.118.158/32	10.167.118.158 – 10.167.118.158	10.167.118.158
160	10.167.118.159/32	10.167.118.159 – 10.167.118.159	10.167.118.159
161	10.167.118.160/32	10.167.118.160 – 10.167.118.160	10.167.118.160
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166	10.167.118.165/32	10.167.118.165 – 10.167.118.165	10.167.118.165
167	10.167.118.166/32	10.167.118.166 – 10.167.118.166	10.167.118.166
168	10.167.118.167/32	10.167.118.167 – 10.167.118.167	10.167.118.167
169	10.167.118.168/32	10.167.118.168 – 10.167.118.168	10.167.118.168
170	10.167.118.169/32	10.167.118.169 – 10.167.118.169	10.167.118.169
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210	10.167.118.209/32	10.167.118.209 – 10.167.118.209	10.167.118.209
211	10.167.118.210/32	10.167.118.210 – 10.167.118.210	10.167.118.210
212	10.167.118.211/32	10.167.118.211 – 10.167.118.211	10.167.118.211
213	10.167.118.212/32	10.167.118.212 – 10.167.118.212	10.167.118.212
214	10.167.118.213/32	10.167.118.213 – 10.167.118.213	10.167.118.213
215	10.167.118.214/32	10.167.118.214 – 10.167.118.214	10.167.118.214
216	10.167.118.215/32	10.167.118.215 – 10.167.118.215	10.167.118.215
217	10.167.118.216/32	10.167.118.216 – 10.167.118.216	10.167.118.216
218	10.167.118.217/32	10.167.118.217 – 10.167.118.217	10.167.118.217
219	10.167.118.218/32	10.167.118.218 – 10.167.118.218	10.167.118.218
220	10.167.118.219/32	10.167.118.219 – 10.167.118.219	10.167.118.219
221	10.167.118.220/32	10.167.118.220 – 10.167.118.220	10.167.118.220
222	10.167.118.221/32	10.167.118.221 – 10.167.118.221	10.167.118.221
223	10.167.118.222/32	10.167.118.222 – 10.167.118.222	10.167.118.222
224	10.167.118.223/32	10.167.118.223 – 10.167.118.223	10.167.118.223
225	10.167.118.224/32	10.167.118.224 – 10.167.118.224	10.167.118.224
226	10.167.118.225/32	10.167.118.225 – 10.167.118.225	10.167.118.225
227	10.167.118.226/32	10.167.118.226 – 10.167.118.226	10.167.118.226
228	10.167.118.227/32	10.167.118.227 – 10.167.118.227	10.167.118.227
229	10.167.118.228/32	10.167.118.228 – 10.167.118.228	10.167.118.228
230	10.167.118.229/32	10.167.118.229 – 10.167.118.229	10.167.118.229
231	10.167.118.230/32	10.167.118.230 – 10.167.118.230	10.167.118.230
232	10.167.118.231/32	10.167.118.231 – 10.167.118.231	10.167.118.231
233	10.167.118.232/32	10.167.118.232 – 10.167.118.232	10.167.118.232
234	10.167.118.233/32	10.167.118.233 – 10.167.118.233	10.167.118.233
235	10.167.118.234/32	10.167.118.234 – 10.167.118.234	10.167.118.234
236	10.167.118.235/32	10.167.118.235 – 10.167.118.235	10.167.118.235
237	10.167.118.236/32	10.167.118.236 – 10.167.118.236	10.167.118.236
238	10.167.118.237/32	10.167.118.237 – 10.167.118.237	10.167.118.237
239	10.167.118.238/32	10.167.118.238 – 10.167.118.238	10.167.118.238
240	10.167.118.239/32	10.167.118.239 – 10.167.118.239	10.167.118.239
241	10.167.118.240/32	10.167.118.240 – 10.167.118.240	10.167.118.240
242	10.167.118.241/32	10.167.118.241 – 10.167.118.241	10.167.118.241
243	10.167.118.242/32	10.167.118.242 – 10.167.118.242	10.167.118.242
244	10.167.118.243/32	10.167.118.243 – 10.167.118.243	10.167.118.243
245	10.167.118.244/32	10.167.118.244 – 10.167.118.244	10.167.118.244
246	10.167.118.245/32	10.167.118.245 – 10.167.118.245	10.167.118.245
247	10.167.118.246/32	10.167.118.246 – 10.167.118.246	10.167.118.246
248	10.167.118.247/32	10.167.118.247 – 10.167.118.247	10.167.118.247
249	10.167.118.248/32	10.167.118.248 – 10.167.118.248	10.167.118.248
250	10.167.118.249/32	10.167.118.249 – 10.167.118.249	10.167.118.249
251	10.167.118.250/32	10.167.118.250 – 10.167.118.250	10.167.118.250
252	10.167.118.251/32	10.167.118.251 – 10.167.118.251	10.167.118.251
253	10.167.118.252/32	10.167.118.252 – 10.167.118.252	10.167.118.252
254	10.167.118.253/32	10.167.118.253 – 10.167.118.253	10.167.118.253
255	10.167.118.254/32	10.167.118.254 – 10.167.118.254	10.167.118.254
256	10.167.118.255/32	10.167.118.255 – 10.167.118.255	10.167.118.255

showing 256 of 512

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