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)10.2.92.0/23

network10.2.92.0/23

broadcast10.2.93.255

first host10.2.92.1

last host10.2.93.254

subnet mask255.255.254.0

wildcard0.0.1.255

addresses512

usable hosts510

classA

ipcalc 10.2.92.0/23

address00001010.00000010.01011100.00000000

subnet mask11111111.11111111.11111110.00000000

network00001010.00000010.01011100.00000000

broadcast00001010.00000010.01011101.11111111

green = network part, grey = host part

hex0x0a025c00

decimal167926784

reverse dns0.92.2.10.in-addr.arpa

ipv4-mapped::ffff:a02:5c00

/23 split into /32 · 512 subnets

close ×

#	network	host range	broadcast
1	10.2.92.0/32	10.2.92.0 – 10.2.92.0	10.2.92.0
2	10.2.92.1/32	10.2.92.1 – 10.2.92.1	10.2.92.1
3	10.2.92.2/32	10.2.92.2 – 10.2.92.2	10.2.92.2
4	10.2.92.3/32	10.2.92.3 – 10.2.92.3	10.2.92.3
5	10.2.92.4/32	10.2.92.4 – 10.2.92.4	10.2.92.4
6	10.2.92.5/32	10.2.92.5 – 10.2.92.5	10.2.92.5
7	10.2.92.6/32	10.2.92.6 – 10.2.92.6	10.2.92.6
8	10.2.92.7/32	10.2.92.7 – 10.2.92.7	10.2.92.7
9	10.2.92.8/32	10.2.92.8 – 10.2.92.8	10.2.92.8
10	10.2.92.9/32	10.2.92.9 – 10.2.92.9	10.2.92.9
11	10.2.92.10/32	10.2.92.10 – 10.2.92.10	10.2.92.10
12	10.2.92.11/32	10.2.92.11 – 10.2.92.11	10.2.92.11
13	10.2.92.12/32	10.2.92.12 – 10.2.92.12	10.2.92.12
14	10.2.92.13/32	10.2.92.13 – 10.2.92.13	10.2.92.13
15	10.2.92.14/32	10.2.92.14 – 10.2.92.14	10.2.92.14
16	10.2.92.15/32	10.2.92.15 – 10.2.92.15	10.2.92.15
17	10.2.92.16/32	10.2.92.16 – 10.2.92.16	10.2.92.16
18	10.2.92.17/32	10.2.92.17 – 10.2.92.17	10.2.92.17
19	10.2.92.18/32	10.2.92.18 – 10.2.92.18	10.2.92.18
20	10.2.92.19/32	10.2.92.19 – 10.2.92.19	10.2.92.19
21	10.2.92.20/32	10.2.92.20 – 10.2.92.20	10.2.92.20
22	10.2.92.21/32	10.2.92.21 – 10.2.92.21	10.2.92.21
23	10.2.92.22/32	10.2.92.22 – 10.2.92.22	10.2.92.22
24	10.2.92.23/32	10.2.92.23 – 10.2.92.23	10.2.92.23
25	10.2.92.24/32	10.2.92.24 – 10.2.92.24	10.2.92.24
26	10.2.92.25/32	10.2.92.25 – 10.2.92.25	10.2.92.25
27	10.2.92.26/32	10.2.92.26 – 10.2.92.26	10.2.92.26
28	10.2.92.27/32	10.2.92.27 – 10.2.92.27	10.2.92.27
29	10.2.92.28/32	10.2.92.28 – 10.2.92.28	10.2.92.28
30	10.2.92.29/32	10.2.92.29 – 10.2.92.29	10.2.92.29
31	10.2.92.30/32	10.2.92.30 – 10.2.92.30	10.2.92.30
32	10.2.92.31/32	10.2.92.31 – 10.2.92.31	10.2.92.31
33	10.2.92.32/32	10.2.92.32 – 10.2.92.32	10.2.92.32
34	10.2.92.33/32	10.2.92.33 – 10.2.92.33	10.2.92.33
35	10.2.92.34/32	10.2.92.34 – 10.2.92.34	10.2.92.34
36	10.2.92.35/32	10.2.92.35 – 10.2.92.35	10.2.92.35
37	10.2.92.36/32	10.2.92.36 – 10.2.92.36	10.2.92.36
38	10.2.92.37/32	10.2.92.37 – 10.2.92.37	10.2.92.37
39	10.2.92.38/32	10.2.92.38 – 10.2.92.38	10.2.92.38
40	10.2.92.39/32	10.2.92.39 – 10.2.92.39	10.2.92.39
41	10.2.92.40/32	10.2.92.40 – 10.2.92.40	10.2.92.40
42	10.2.92.41/32	10.2.92.41 – 10.2.92.41	10.2.92.41
43	10.2.92.42/32	10.2.92.42 – 10.2.92.42	10.2.92.42
44	10.2.92.43/32	10.2.92.43 – 10.2.92.43	10.2.92.43
45	10.2.92.44/32	10.2.92.44 – 10.2.92.44	10.2.92.44
46	10.2.92.45/32	10.2.92.45 – 10.2.92.45	10.2.92.45
47	10.2.92.46/32	10.2.92.46 – 10.2.92.46	10.2.92.46
48	10.2.92.47/32	10.2.92.47 – 10.2.92.47	10.2.92.47
49	10.2.92.48/32	10.2.92.48 – 10.2.92.48	10.2.92.48
50	10.2.92.49/32	10.2.92.49 – 10.2.92.49	10.2.92.49
51	10.2.92.50/32	10.2.92.50 – 10.2.92.50	10.2.92.50
52	10.2.92.51/32	10.2.92.51 – 10.2.92.51	10.2.92.51
53	10.2.92.52/32	10.2.92.52 – 10.2.92.52	10.2.92.52
54	10.2.92.53/32	10.2.92.53 – 10.2.92.53	10.2.92.53
55	10.2.92.54/32	10.2.92.54 – 10.2.92.54	10.2.92.54
56	10.2.92.55/32	10.2.92.55 – 10.2.92.55	10.2.92.55
57	10.2.92.56/32	10.2.92.56 – 10.2.92.56	10.2.92.56
58	10.2.92.57/32	10.2.92.57 – 10.2.92.57	10.2.92.57
59	10.2.92.58/32	10.2.92.58 – 10.2.92.58	10.2.92.58
60	10.2.92.59/32	10.2.92.59 – 10.2.92.59	10.2.92.59
61	10.2.92.60/32	10.2.92.60 – 10.2.92.60	10.2.92.60
62	10.2.92.61/32	10.2.92.61 – 10.2.92.61	10.2.92.61
63	10.2.92.62/32	10.2.92.62 – 10.2.92.62	10.2.92.62
64	10.2.92.63/32	10.2.92.63 – 10.2.92.63	10.2.92.63
65	10.2.92.64/32	10.2.92.64 – 10.2.92.64	10.2.92.64
66	10.2.92.65/32	10.2.92.65 – 10.2.92.65	10.2.92.65
67	10.2.92.66/32	10.2.92.66 – 10.2.92.66	10.2.92.66
68	10.2.92.67/32	10.2.92.67 – 10.2.92.67	10.2.92.67
69	10.2.92.68/32	10.2.92.68 – 10.2.92.68	10.2.92.68
70	10.2.92.69/32	10.2.92.69 – 10.2.92.69	10.2.92.69
71	10.2.92.70/32	10.2.92.70 – 10.2.92.70	10.2.92.70
72	10.2.92.71/32	10.2.92.71 – 10.2.92.71	10.2.92.71
73	10.2.92.72/32	10.2.92.72 – 10.2.92.72	10.2.92.72
74	10.2.92.73/32	10.2.92.73 – 10.2.92.73	10.2.92.73
75	10.2.92.74/32	10.2.92.74 – 10.2.92.74	10.2.92.74
76	10.2.92.75/32	10.2.92.75 – 10.2.92.75	10.2.92.75
77	10.2.92.76/32	10.2.92.76 – 10.2.92.76	10.2.92.76
78	10.2.92.77/32	10.2.92.77 – 10.2.92.77	10.2.92.77
79	10.2.92.78/32	10.2.92.78 – 10.2.92.78	10.2.92.78
80	10.2.92.79/32	10.2.92.79 – 10.2.92.79	10.2.92.79
81	10.2.92.80/32	10.2.92.80 – 10.2.92.80	10.2.92.80
82	10.2.92.81/32	10.2.92.81 – 10.2.92.81	10.2.92.81
83	10.2.92.82/32	10.2.92.82 – 10.2.92.82	10.2.92.82
84	10.2.92.83/32	10.2.92.83 – 10.2.92.83	10.2.92.83
85	10.2.92.84/32	10.2.92.84 – 10.2.92.84	10.2.92.84
86	10.2.92.85/32	10.2.92.85 – 10.2.92.85	10.2.92.85
87	10.2.92.86/32	10.2.92.86 – 10.2.92.86	10.2.92.86
88	10.2.92.87/32	10.2.92.87 – 10.2.92.87	10.2.92.87
89	10.2.92.88/32	10.2.92.88 – 10.2.92.88	10.2.92.88
90	10.2.92.89/32	10.2.92.89 – 10.2.92.89	10.2.92.89
91	10.2.92.90/32	10.2.92.90 – 10.2.92.90	10.2.92.90
92	10.2.92.91/32	10.2.92.91 – 10.2.92.91	10.2.92.91
93	10.2.92.92/32	10.2.92.92 – 10.2.92.92	10.2.92.92
94	10.2.92.93/32	10.2.92.93 – 10.2.92.93	10.2.92.93
95	10.2.92.94/32	10.2.92.94 – 10.2.92.94	10.2.92.94
96	10.2.92.95/32	10.2.92.95 – 10.2.92.95	10.2.92.95
97	10.2.92.96/32	10.2.92.96 – 10.2.92.96	10.2.92.96
98	10.2.92.97/32	10.2.92.97 – 10.2.92.97	10.2.92.97
99	10.2.92.98/32	10.2.92.98 – 10.2.92.98	10.2.92.98
100	10.2.92.99/32	10.2.92.99 – 10.2.92.99	10.2.92.99
101	10.2.92.100/32	10.2.92.100 – 10.2.92.100	10.2.92.100
102	10.2.92.101/32	10.2.92.101 – 10.2.92.101	10.2.92.101
103	10.2.92.102/32	10.2.92.102 – 10.2.92.102	10.2.92.102
104	10.2.92.103/32	10.2.92.103 – 10.2.92.103	10.2.92.103
105	10.2.92.104/32	10.2.92.104 – 10.2.92.104	10.2.92.104
106	10.2.92.105/32	10.2.92.105 – 10.2.92.105	10.2.92.105
107	10.2.92.106/32	10.2.92.106 – 10.2.92.106	10.2.92.106
108	10.2.92.107/32	10.2.92.107 – 10.2.92.107	10.2.92.107
109	10.2.92.108/32	10.2.92.108 – 10.2.92.108	10.2.92.108
110	10.2.92.109/32	10.2.92.109 – 10.2.92.109	10.2.92.109
111	10.2.92.110/32	10.2.92.110 – 10.2.92.110	10.2.92.110
112	10.2.92.111/32	10.2.92.111 – 10.2.92.111	10.2.92.111
113	10.2.92.112/32	10.2.92.112 – 10.2.92.112	10.2.92.112
114	10.2.92.113/32	10.2.92.113 – 10.2.92.113	10.2.92.113
115	10.2.92.114/32	10.2.92.114 – 10.2.92.114	10.2.92.114
116	10.2.92.115/32	10.2.92.115 – 10.2.92.115	10.2.92.115
117	10.2.92.116/32	10.2.92.116 – 10.2.92.116	10.2.92.116
118	10.2.92.117/32	10.2.92.117 – 10.2.92.117	10.2.92.117
119	10.2.92.118/32	10.2.92.118 – 10.2.92.118	10.2.92.118
120	10.2.92.119/32	10.2.92.119 – 10.2.92.119	10.2.92.119
121	10.2.92.120/32	10.2.92.120 – 10.2.92.120	10.2.92.120
122	10.2.92.121/32	10.2.92.121 – 10.2.92.121	10.2.92.121
123	10.2.92.122/32	10.2.92.122 – 10.2.92.122	10.2.92.122
124	10.2.92.123/32	10.2.92.123 – 10.2.92.123	10.2.92.123
125	10.2.92.124/32	10.2.92.124 – 10.2.92.124	10.2.92.124
126	10.2.92.125/32	10.2.92.125 – 10.2.92.125	10.2.92.125
127	10.2.92.126/32	10.2.92.126 – 10.2.92.126	10.2.92.126
128	10.2.92.127/32	10.2.92.127 – 10.2.92.127	10.2.92.127
129	10.2.92.128/32	10.2.92.128 – 10.2.92.128	10.2.92.128
130	10.2.92.129/32	10.2.92.129 – 10.2.92.129	10.2.92.129
131	10.2.92.130/32	10.2.92.130 – 10.2.92.130	10.2.92.130
132	10.2.92.131/32	10.2.92.131 – 10.2.92.131	10.2.92.131
133	10.2.92.132/32	10.2.92.132 – 10.2.92.132	10.2.92.132
134	10.2.92.133/32	10.2.92.133 – 10.2.92.133	10.2.92.133
135	10.2.92.134/32	10.2.92.134 – 10.2.92.134	10.2.92.134
136	10.2.92.135/32	10.2.92.135 – 10.2.92.135	10.2.92.135
137	10.2.92.136/32	10.2.92.136 – 10.2.92.136	10.2.92.136
138	10.2.92.137/32	10.2.92.137 – 10.2.92.137	10.2.92.137
139	10.2.92.138/32	10.2.92.138 – 10.2.92.138	10.2.92.138
140	10.2.92.139/32	10.2.92.139 – 10.2.92.139	10.2.92.139
141	10.2.92.140/32	10.2.92.140 – 10.2.92.140	10.2.92.140
142	10.2.92.141/32	10.2.92.141 – 10.2.92.141	10.2.92.141
143	10.2.92.142/32	10.2.92.142 – 10.2.92.142	10.2.92.142
144	10.2.92.143/32	10.2.92.143 – 10.2.92.143	10.2.92.143
145	10.2.92.144/32	10.2.92.144 – 10.2.92.144	10.2.92.144
146	10.2.92.145/32	10.2.92.145 – 10.2.92.145	10.2.92.145
147	10.2.92.146/32	10.2.92.146 – 10.2.92.146	10.2.92.146
148	10.2.92.147/32	10.2.92.147 – 10.2.92.147	10.2.92.147
149	10.2.92.148/32	10.2.92.148 – 10.2.92.148	10.2.92.148
150	10.2.92.149/32	10.2.92.149 – 10.2.92.149	10.2.92.149
151	10.2.92.150/32	10.2.92.150 – 10.2.92.150	10.2.92.150
152	10.2.92.151/32	10.2.92.151 – 10.2.92.151	10.2.92.151
153	10.2.92.152/32	10.2.92.152 – 10.2.92.152	10.2.92.152
154	10.2.92.153/32	10.2.92.153 – 10.2.92.153	10.2.92.153
155	10.2.92.154/32	10.2.92.154 – 10.2.92.154	10.2.92.154
156	10.2.92.155/32	10.2.92.155 – 10.2.92.155	10.2.92.155
157	10.2.92.156/32	10.2.92.156 – 10.2.92.156	10.2.92.156
158	10.2.92.157/32	10.2.92.157 – 10.2.92.157	10.2.92.157
159	10.2.92.158/32	10.2.92.158 – 10.2.92.158	10.2.92.158
160	10.2.92.159/32	10.2.92.159 – 10.2.92.159	10.2.92.159
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210	10.2.92.209/32	10.2.92.209 – 10.2.92.209	10.2.92.209
211	10.2.92.210/32	10.2.92.210 – 10.2.92.210	10.2.92.210
212	10.2.92.211/32	10.2.92.211 – 10.2.92.211	10.2.92.211
213	10.2.92.212/32	10.2.92.212 – 10.2.92.212	10.2.92.212
214	10.2.92.213/32	10.2.92.213 – 10.2.92.213	10.2.92.213
215	10.2.92.214/32	10.2.92.214 – 10.2.92.214	10.2.92.214
216	10.2.92.215/32	10.2.92.215 – 10.2.92.215	10.2.92.215
217	10.2.92.216/32	10.2.92.216 – 10.2.92.216	10.2.92.216
218	10.2.92.217/32	10.2.92.217 – 10.2.92.217	10.2.92.217
219	10.2.92.218/32	10.2.92.218 – 10.2.92.218	10.2.92.218
220	10.2.92.219/32	10.2.92.219 – 10.2.92.219	10.2.92.219
221	10.2.92.220/32	10.2.92.220 – 10.2.92.220	10.2.92.220
222	10.2.92.221/32	10.2.92.221 – 10.2.92.221	10.2.92.221
223	10.2.92.222/32	10.2.92.222 – 10.2.92.222	10.2.92.222
224	10.2.92.223/32	10.2.92.223 – 10.2.92.223	10.2.92.223
225	10.2.92.224/32	10.2.92.224 – 10.2.92.224	10.2.92.224
226	10.2.92.225/32	10.2.92.225 – 10.2.92.225	10.2.92.225
227	10.2.92.226/32	10.2.92.226 – 10.2.92.226	10.2.92.226
228	10.2.92.227/32	10.2.92.227 – 10.2.92.227	10.2.92.227
229	10.2.92.228/32	10.2.92.228 – 10.2.92.228	10.2.92.228
230	10.2.92.229/32	10.2.92.229 – 10.2.92.229	10.2.92.229
231	10.2.92.230/32	10.2.92.230 – 10.2.92.230	10.2.92.230
232	10.2.92.231/32	10.2.92.231 – 10.2.92.231	10.2.92.231
233	10.2.92.232/32	10.2.92.232 – 10.2.92.232	10.2.92.232
234	10.2.92.233/32	10.2.92.233 – 10.2.92.233	10.2.92.233
235	10.2.92.234/32	10.2.92.234 – 10.2.92.234	10.2.92.234
236	10.2.92.235/32	10.2.92.235 – 10.2.92.235	10.2.92.235
237	10.2.92.236/32	10.2.92.236 – 10.2.92.236	10.2.92.236
238	10.2.92.237/32	10.2.92.237 – 10.2.92.237	10.2.92.237
239	10.2.92.238/32	10.2.92.238 – 10.2.92.238	10.2.92.238
240	10.2.92.239/32	10.2.92.239 – 10.2.92.239	10.2.92.239
241	10.2.92.240/32	10.2.92.240 – 10.2.92.240	10.2.92.240
242	10.2.92.241/32	10.2.92.241 – 10.2.92.241	10.2.92.241
243	10.2.92.242/32	10.2.92.242 – 10.2.92.242	10.2.92.242
244	10.2.92.243/32	10.2.92.243 – 10.2.92.243	10.2.92.243
245	10.2.92.244/32	10.2.92.244 – 10.2.92.244	10.2.92.244
246	10.2.92.245/32	10.2.92.245 – 10.2.92.245	10.2.92.245
247	10.2.92.246/32	10.2.92.246 – 10.2.92.246	10.2.92.246
248	10.2.92.247/32	10.2.92.247 – 10.2.92.247	10.2.92.247
249	10.2.92.248/32	10.2.92.248 – 10.2.92.248	10.2.92.248
250	10.2.92.249/32	10.2.92.249 – 10.2.92.249	10.2.92.249
251	10.2.92.250/32	10.2.92.250 – 10.2.92.250	10.2.92.250
252	10.2.92.251/32	10.2.92.251 – 10.2.92.251	10.2.92.251
253	10.2.92.252/32	10.2.92.252 – 10.2.92.252	10.2.92.252
254	10.2.92.253/32	10.2.92.253 – 10.2.92.253	10.2.92.253
255	10.2.92.254/32	10.2.92.254 – 10.2.92.254	10.2.92.254
256	10.2.92.255/32	10.2.92.255 – 10.2.92.255	10.2.92.255

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 →