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)10.0.234.0/24

network10.0.234.0/24

broadcast10.0.234.255

first host10.0.234.1

last host10.0.234.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.0.234.0/24

address00001010.00000000.11101010.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.00000000.11101010.00000000

broadcast00001010.00000000.11101010.11111111

green = network part, grey = host part

hex0x0a00ea00

decimal167832064

reverse dns0.234.0.10.in-addr.arpa

ipv4-mapped::ffff:a00:ea00

/24 split into /32 · 256 subnets

close ×

#	network	host range	broadcast
1	10.0.234.0/32	10.0.234.0 – 10.0.234.0	10.0.234.0
2	10.0.234.1/32	10.0.234.1 – 10.0.234.1	10.0.234.1
3	10.0.234.2/32	10.0.234.2 – 10.0.234.2	10.0.234.2
4	10.0.234.3/32	10.0.234.3 – 10.0.234.3	10.0.234.3
5	10.0.234.4/32	10.0.234.4 – 10.0.234.4	10.0.234.4
6	10.0.234.5/32	10.0.234.5 – 10.0.234.5	10.0.234.5
7	10.0.234.6/32	10.0.234.6 – 10.0.234.6	10.0.234.6
8	10.0.234.7/32	10.0.234.7 – 10.0.234.7	10.0.234.7
9	10.0.234.8/32	10.0.234.8 – 10.0.234.8	10.0.234.8
10	10.0.234.9/32	10.0.234.9 – 10.0.234.9	10.0.234.9
11	10.0.234.10/32	10.0.234.10 – 10.0.234.10	10.0.234.10
12	10.0.234.11/32	10.0.234.11 – 10.0.234.11	10.0.234.11
13	10.0.234.12/32	10.0.234.12 – 10.0.234.12	10.0.234.12
14	10.0.234.13/32	10.0.234.13 – 10.0.234.13	10.0.234.13
15	10.0.234.14/32	10.0.234.14 – 10.0.234.14	10.0.234.14
16	10.0.234.15/32	10.0.234.15 – 10.0.234.15	10.0.234.15
17	10.0.234.16/32	10.0.234.16 – 10.0.234.16	10.0.234.16
18	10.0.234.17/32	10.0.234.17 – 10.0.234.17	10.0.234.17
19	10.0.234.18/32	10.0.234.18 – 10.0.234.18	10.0.234.18
20	10.0.234.19/32	10.0.234.19 – 10.0.234.19	10.0.234.19
21	10.0.234.20/32	10.0.234.20 – 10.0.234.20	10.0.234.20
22	10.0.234.21/32	10.0.234.21 – 10.0.234.21	10.0.234.21
23	10.0.234.22/32	10.0.234.22 – 10.0.234.22	10.0.234.22
24	10.0.234.23/32	10.0.234.23 – 10.0.234.23	10.0.234.23
25	10.0.234.24/32	10.0.234.24 – 10.0.234.24	10.0.234.24
26	10.0.234.25/32	10.0.234.25 – 10.0.234.25	10.0.234.25
27	10.0.234.26/32	10.0.234.26 – 10.0.234.26	10.0.234.26
28	10.0.234.27/32	10.0.234.27 – 10.0.234.27	10.0.234.27
29	10.0.234.28/32	10.0.234.28 – 10.0.234.28	10.0.234.28
30	10.0.234.29/32	10.0.234.29 – 10.0.234.29	10.0.234.29
31	10.0.234.30/32	10.0.234.30 – 10.0.234.30	10.0.234.30
32	10.0.234.31/32	10.0.234.31 – 10.0.234.31	10.0.234.31
33	10.0.234.32/32	10.0.234.32 – 10.0.234.32	10.0.234.32
34	10.0.234.33/32	10.0.234.33 – 10.0.234.33	10.0.234.33
35	10.0.234.34/32	10.0.234.34 – 10.0.234.34	10.0.234.34
36	10.0.234.35/32	10.0.234.35 – 10.0.234.35	10.0.234.35
37	10.0.234.36/32	10.0.234.36 – 10.0.234.36	10.0.234.36
38	10.0.234.37/32	10.0.234.37 – 10.0.234.37	10.0.234.37
39	10.0.234.38/32	10.0.234.38 – 10.0.234.38	10.0.234.38
40	10.0.234.39/32	10.0.234.39 – 10.0.234.39	10.0.234.39
41	10.0.234.40/32	10.0.234.40 – 10.0.234.40	10.0.234.40
42	10.0.234.41/32	10.0.234.41 – 10.0.234.41	10.0.234.41
43	10.0.234.42/32	10.0.234.42 – 10.0.234.42	10.0.234.42
44	10.0.234.43/32	10.0.234.43 – 10.0.234.43	10.0.234.43
45	10.0.234.44/32	10.0.234.44 – 10.0.234.44	10.0.234.44
46	10.0.234.45/32	10.0.234.45 – 10.0.234.45	10.0.234.45
47	10.0.234.46/32	10.0.234.46 – 10.0.234.46	10.0.234.46
48	10.0.234.47/32	10.0.234.47 – 10.0.234.47	10.0.234.47
49	10.0.234.48/32	10.0.234.48 – 10.0.234.48	10.0.234.48
50	10.0.234.49/32	10.0.234.49 – 10.0.234.49	10.0.234.49
51	10.0.234.50/32	10.0.234.50 – 10.0.234.50	10.0.234.50
52	10.0.234.51/32	10.0.234.51 – 10.0.234.51	10.0.234.51
53	10.0.234.52/32	10.0.234.52 – 10.0.234.52	10.0.234.52
54	10.0.234.53/32	10.0.234.53 – 10.0.234.53	10.0.234.53
55	10.0.234.54/32	10.0.234.54 – 10.0.234.54	10.0.234.54
56	10.0.234.55/32	10.0.234.55 – 10.0.234.55	10.0.234.55
57	10.0.234.56/32	10.0.234.56 – 10.0.234.56	10.0.234.56
58	10.0.234.57/32	10.0.234.57 – 10.0.234.57	10.0.234.57
59	10.0.234.58/32	10.0.234.58 – 10.0.234.58	10.0.234.58
60	10.0.234.59/32	10.0.234.59 – 10.0.234.59	10.0.234.59
61	10.0.234.60/32	10.0.234.60 – 10.0.234.60	10.0.234.60
62	10.0.234.61/32	10.0.234.61 – 10.0.234.61	10.0.234.61
63	10.0.234.62/32	10.0.234.62 – 10.0.234.62	10.0.234.62
64	10.0.234.63/32	10.0.234.63 – 10.0.234.63	10.0.234.63
65	10.0.234.64/32	10.0.234.64 – 10.0.234.64	10.0.234.64
66	10.0.234.65/32	10.0.234.65 – 10.0.234.65	10.0.234.65
67	10.0.234.66/32	10.0.234.66 – 10.0.234.66	10.0.234.66
68	10.0.234.67/32	10.0.234.67 – 10.0.234.67	10.0.234.67
69	10.0.234.68/32	10.0.234.68 – 10.0.234.68	10.0.234.68
70	10.0.234.69/32	10.0.234.69 – 10.0.234.69	10.0.234.69
71	10.0.234.70/32	10.0.234.70 – 10.0.234.70	10.0.234.70
72	10.0.234.71/32	10.0.234.71 – 10.0.234.71	10.0.234.71
73	10.0.234.72/32	10.0.234.72 – 10.0.234.72	10.0.234.72
74	10.0.234.73/32	10.0.234.73 – 10.0.234.73	10.0.234.73
75	10.0.234.74/32	10.0.234.74 – 10.0.234.74	10.0.234.74
76	10.0.234.75/32	10.0.234.75 – 10.0.234.75	10.0.234.75
77	10.0.234.76/32	10.0.234.76 – 10.0.234.76	10.0.234.76
78	10.0.234.77/32	10.0.234.77 – 10.0.234.77	10.0.234.77
79	10.0.234.78/32	10.0.234.78 – 10.0.234.78	10.0.234.78
80	10.0.234.79/32	10.0.234.79 – 10.0.234.79	10.0.234.79
81	10.0.234.80/32	10.0.234.80 – 10.0.234.80	10.0.234.80
82	10.0.234.81/32	10.0.234.81 – 10.0.234.81	10.0.234.81
83	10.0.234.82/32	10.0.234.82 – 10.0.234.82	10.0.234.82
84	10.0.234.83/32	10.0.234.83 – 10.0.234.83	10.0.234.83
85	10.0.234.84/32	10.0.234.84 – 10.0.234.84	10.0.234.84
86	10.0.234.85/32	10.0.234.85 – 10.0.234.85	10.0.234.85
87	10.0.234.86/32	10.0.234.86 – 10.0.234.86	10.0.234.86
88	10.0.234.87/32	10.0.234.87 – 10.0.234.87	10.0.234.87
89	10.0.234.88/32	10.0.234.88 – 10.0.234.88	10.0.234.88
90	10.0.234.89/32	10.0.234.89 – 10.0.234.89	10.0.234.89
91	10.0.234.90/32	10.0.234.90 – 10.0.234.90	10.0.234.90
92	10.0.234.91/32	10.0.234.91 – 10.0.234.91	10.0.234.91
93	10.0.234.92/32	10.0.234.92 – 10.0.234.92	10.0.234.92
94	10.0.234.93/32	10.0.234.93 – 10.0.234.93	10.0.234.93
95	10.0.234.94/32	10.0.234.94 – 10.0.234.94	10.0.234.94
96	10.0.234.95/32	10.0.234.95 – 10.0.234.95	10.0.234.95
97	10.0.234.96/32	10.0.234.96 – 10.0.234.96	10.0.234.96
98	10.0.234.97/32	10.0.234.97 – 10.0.234.97	10.0.234.97
99	10.0.234.98/32	10.0.234.98 – 10.0.234.98	10.0.234.98
100	10.0.234.99/32	10.0.234.99 – 10.0.234.99	10.0.234.99
101	10.0.234.100/32	10.0.234.100 – 10.0.234.100	10.0.234.100
102	10.0.234.101/32	10.0.234.101 – 10.0.234.101	10.0.234.101
103	10.0.234.102/32	10.0.234.102 – 10.0.234.102	10.0.234.102
104	10.0.234.103/32	10.0.234.103 – 10.0.234.103	10.0.234.103
105	10.0.234.104/32	10.0.234.104 – 10.0.234.104	10.0.234.104
106	10.0.234.105/32	10.0.234.105 – 10.0.234.105	10.0.234.105
107	10.0.234.106/32	10.0.234.106 – 10.0.234.106	10.0.234.106
108	10.0.234.107/32	10.0.234.107 – 10.0.234.107	10.0.234.107
109	10.0.234.108/32	10.0.234.108 – 10.0.234.108	10.0.234.108
110	10.0.234.109/32	10.0.234.109 – 10.0.234.109	10.0.234.109
111	10.0.234.110/32	10.0.234.110 – 10.0.234.110	10.0.234.110
112	10.0.234.111/32	10.0.234.111 – 10.0.234.111	10.0.234.111
113	10.0.234.112/32	10.0.234.112 – 10.0.234.112	10.0.234.112
114	10.0.234.113/32	10.0.234.113 – 10.0.234.113	10.0.234.113
115	10.0.234.114/32	10.0.234.114 – 10.0.234.114	10.0.234.114
116	10.0.234.115/32	10.0.234.115 – 10.0.234.115	10.0.234.115
117	10.0.234.116/32	10.0.234.116 – 10.0.234.116	10.0.234.116
118	10.0.234.117/32	10.0.234.117 – 10.0.234.117	10.0.234.117
119	10.0.234.118/32	10.0.234.118 – 10.0.234.118	10.0.234.118
120	10.0.234.119/32	10.0.234.119 – 10.0.234.119	10.0.234.119
121	10.0.234.120/32	10.0.234.120 – 10.0.234.120	10.0.234.120
122	10.0.234.121/32	10.0.234.121 – 10.0.234.121	10.0.234.121
123	10.0.234.122/32	10.0.234.122 – 10.0.234.122	10.0.234.122
124	10.0.234.123/32	10.0.234.123 – 10.0.234.123	10.0.234.123
125	10.0.234.124/32	10.0.234.124 – 10.0.234.124	10.0.234.124
126	10.0.234.125/32	10.0.234.125 – 10.0.234.125	10.0.234.125
127	10.0.234.126/32	10.0.234.126 – 10.0.234.126	10.0.234.126
128	10.0.234.127/32	10.0.234.127 – 10.0.234.127	10.0.234.127
129	10.0.234.128/32	10.0.234.128 – 10.0.234.128	10.0.234.128
130	10.0.234.129/32	10.0.234.129 – 10.0.234.129	10.0.234.129
131	10.0.234.130/32	10.0.234.130 – 10.0.234.130	10.0.234.130
132	10.0.234.131/32	10.0.234.131 – 10.0.234.131	10.0.234.131
133	10.0.234.132/32	10.0.234.132 – 10.0.234.132	10.0.234.132
134	10.0.234.133/32	10.0.234.133 – 10.0.234.133	10.0.234.133
135	10.0.234.134/32	10.0.234.134 – 10.0.234.134	10.0.234.134
136	10.0.234.135/32	10.0.234.135 – 10.0.234.135	10.0.234.135
137	10.0.234.136/32	10.0.234.136 – 10.0.234.136	10.0.234.136
138	10.0.234.137/32	10.0.234.137 – 10.0.234.137	10.0.234.137
139	10.0.234.138/32	10.0.234.138 – 10.0.234.138	10.0.234.138
140	10.0.234.139/32	10.0.234.139 – 10.0.234.139	10.0.234.139
141	10.0.234.140/32	10.0.234.140 – 10.0.234.140	10.0.234.140
142	10.0.234.141/32	10.0.234.141 – 10.0.234.141	10.0.234.141
143	10.0.234.142/32	10.0.234.142 – 10.0.234.142	10.0.234.142
144	10.0.234.143/32	10.0.234.143 – 10.0.234.143	10.0.234.143
145	10.0.234.144/32	10.0.234.144 – 10.0.234.144	10.0.234.144
146	10.0.234.145/32	10.0.234.145 – 10.0.234.145	10.0.234.145
147	10.0.234.146/32	10.0.234.146 – 10.0.234.146	10.0.234.146
148	10.0.234.147/32	10.0.234.147 – 10.0.234.147	10.0.234.147
149	10.0.234.148/32	10.0.234.148 – 10.0.234.148	10.0.234.148
150	10.0.234.149/32	10.0.234.149 – 10.0.234.149	10.0.234.149
151	10.0.234.150/32	10.0.234.150 – 10.0.234.150	10.0.234.150
152	10.0.234.151/32	10.0.234.151 – 10.0.234.151	10.0.234.151
153	10.0.234.152/32	10.0.234.152 – 10.0.234.152	10.0.234.152
154	10.0.234.153/32	10.0.234.153 – 10.0.234.153	10.0.234.153
155	10.0.234.154/32	10.0.234.154 – 10.0.234.154	10.0.234.154
156	10.0.234.155/32	10.0.234.155 – 10.0.234.155	10.0.234.155
157	10.0.234.156/32	10.0.234.156 – 10.0.234.156	10.0.234.156
158	10.0.234.157/32	10.0.234.157 – 10.0.234.157	10.0.234.157
159	10.0.234.158/32	10.0.234.158 – 10.0.234.158	10.0.234.158
160	10.0.234.159/32	10.0.234.159 – 10.0.234.159	10.0.234.159
161	10.0.234.160/32	10.0.234.160 – 10.0.234.160	10.0.234.160
162	10.0.234.161/32	10.0.234.161 – 10.0.234.161	10.0.234.161
163	10.0.234.162/32	10.0.234.162 – 10.0.234.162	10.0.234.162
164	10.0.234.163/32	10.0.234.163 – 10.0.234.163	10.0.234.163
165	10.0.234.164/32	10.0.234.164 – 10.0.234.164	10.0.234.164
166	10.0.234.165/32	10.0.234.165 – 10.0.234.165	10.0.234.165
167	10.0.234.166/32	10.0.234.166 – 10.0.234.166	10.0.234.166
168	10.0.234.167/32	10.0.234.167 – 10.0.234.167	10.0.234.167
169	10.0.234.168/32	10.0.234.168 – 10.0.234.168	10.0.234.168
170	10.0.234.169/32	10.0.234.169 – 10.0.234.169	10.0.234.169
171	10.0.234.170/32	10.0.234.170 – 10.0.234.170	10.0.234.170
172	10.0.234.171/32	10.0.234.171 – 10.0.234.171	10.0.234.171
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174	10.0.234.173/32	10.0.234.173 – 10.0.234.173	10.0.234.173
175	10.0.234.174/32	10.0.234.174 – 10.0.234.174	10.0.234.174
176	10.0.234.175/32	10.0.234.175 – 10.0.234.175	10.0.234.175
177	10.0.234.176/32	10.0.234.176 – 10.0.234.176	10.0.234.176
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210	10.0.234.209/32	10.0.234.209 – 10.0.234.209	10.0.234.209
211	10.0.234.210/32	10.0.234.210 – 10.0.234.210	10.0.234.210
212	10.0.234.211/32	10.0.234.211 – 10.0.234.211	10.0.234.211
213	10.0.234.212/32	10.0.234.212 – 10.0.234.212	10.0.234.212
214	10.0.234.213/32	10.0.234.213 – 10.0.234.213	10.0.234.213
215	10.0.234.214/32	10.0.234.214 – 10.0.234.214	10.0.234.214
216	10.0.234.215/32	10.0.234.215 – 10.0.234.215	10.0.234.215
217	10.0.234.216/32	10.0.234.216 – 10.0.234.216	10.0.234.216
218	10.0.234.217/32	10.0.234.217 – 10.0.234.217	10.0.234.217
219	10.0.234.218/32	10.0.234.218 – 10.0.234.218	10.0.234.218
220	10.0.234.219/32	10.0.234.219 – 10.0.234.219	10.0.234.219
221	10.0.234.220/32	10.0.234.220 – 10.0.234.220	10.0.234.220
222	10.0.234.221/32	10.0.234.221 – 10.0.234.221	10.0.234.221
223	10.0.234.222/32	10.0.234.222 – 10.0.234.222	10.0.234.222
224	10.0.234.223/32	10.0.234.223 – 10.0.234.223	10.0.234.223
225	10.0.234.224/32	10.0.234.224 – 10.0.234.224	10.0.234.224
226	10.0.234.225/32	10.0.234.225 – 10.0.234.225	10.0.234.225
227	10.0.234.226/32	10.0.234.226 – 10.0.234.226	10.0.234.226
228	10.0.234.227/32	10.0.234.227 – 10.0.234.227	10.0.234.227
229	10.0.234.228/32	10.0.234.228 – 10.0.234.228	10.0.234.228
230	10.0.234.229/32	10.0.234.229 – 10.0.234.229	10.0.234.229
231	10.0.234.230/32	10.0.234.230 – 10.0.234.230	10.0.234.230
232	10.0.234.231/32	10.0.234.231 – 10.0.234.231	10.0.234.231
233	10.0.234.232/32	10.0.234.232 – 10.0.234.232	10.0.234.232
234	10.0.234.233/32	10.0.234.233 – 10.0.234.233	10.0.234.233
235	10.0.234.234/32	10.0.234.234 – 10.0.234.234	10.0.234.234
236	10.0.234.235/32	10.0.234.235 – 10.0.234.235	10.0.234.235
237	10.0.234.236/32	10.0.234.236 – 10.0.234.236	10.0.234.236
238	10.0.234.237/32	10.0.234.237 – 10.0.234.237	10.0.234.237
239	10.0.234.238/32	10.0.234.238 – 10.0.234.238	10.0.234.238
240	10.0.234.239/32	10.0.234.239 – 10.0.234.239	10.0.234.239
241	10.0.234.240/32	10.0.234.240 – 10.0.234.240	10.0.234.240
242	10.0.234.241/32	10.0.234.241 – 10.0.234.241	10.0.234.241
243	10.0.234.242/32	10.0.234.242 – 10.0.234.242	10.0.234.242
244	10.0.234.243/32	10.0.234.243 – 10.0.234.243	10.0.234.243
245	10.0.234.244/32	10.0.234.244 – 10.0.234.244	10.0.234.244
246	10.0.234.245/32	10.0.234.245 – 10.0.234.245	10.0.234.245
247	10.0.234.246/32	10.0.234.246 – 10.0.234.246	10.0.234.246
248	10.0.234.247/32	10.0.234.247 – 10.0.234.247	10.0.234.247
249	10.0.234.248/32	10.0.234.248 – 10.0.234.248	10.0.234.248
250	10.0.234.249/32	10.0.234.249 – 10.0.234.249	10.0.234.249
251	10.0.234.250/32	10.0.234.250 – 10.0.234.250	10.0.234.250
252	10.0.234.251/32	10.0.234.251 – 10.0.234.251	10.0.234.251
253	10.0.234.252/32	10.0.234.252 – 10.0.234.252	10.0.234.252
254	10.0.234.253/32	10.0.234.253 – 10.0.234.253	10.0.234.253
255	10.0.234.254/32	10.0.234.254 – 10.0.234.254	10.0.234.254
256	10.0.234.255/32	10.0.234.255 – 10.0.234.255	10.0.234.255

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 →