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)10.3.235.0/24

network10.3.235.0/24

broadcast10.3.235.255

first host10.3.235.1

last host10.3.235.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.3.235.0/24

address00001010.00000011.11101011.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.00000011.11101011.00000000

broadcast00001010.00000011.11101011.11111111

green = network part, grey = host part

hex0x0a03eb00

decimal168028928

reverse dns0.235.3.10.in-addr.arpa

ipv4-mapped::ffff:a03:eb00

/24 split into /32 · 256 subnets

close ×

#	network	host range	broadcast
1	10.3.235.0/32	10.3.235.0 – 10.3.235.0	10.3.235.0
2	10.3.235.1/32	10.3.235.1 – 10.3.235.1	10.3.235.1
3	10.3.235.2/32	10.3.235.2 – 10.3.235.2	10.3.235.2
4	10.3.235.3/32	10.3.235.3 – 10.3.235.3	10.3.235.3
5	10.3.235.4/32	10.3.235.4 – 10.3.235.4	10.3.235.4
6	10.3.235.5/32	10.3.235.5 – 10.3.235.5	10.3.235.5
7	10.3.235.6/32	10.3.235.6 – 10.3.235.6	10.3.235.6
8	10.3.235.7/32	10.3.235.7 – 10.3.235.7	10.3.235.7
9	10.3.235.8/32	10.3.235.8 – 10.3.235.8	10.3.235.8
10	10.3.235.9/32	10.3.235.9 – 10.3.235.9	10.3.235.9
11	10.3.235.10/32	10.3.235.10 – 10.3.235.10	10.3.235.10
12	10.3.235.11/32	10.3.235.11 – 10.3.235.11	10.3.235.11
13	10.3.235.12/32	10.3.235.12 – 10.3.235.12	10.3.235.12
14	10.3.235.13/32	10.3.235.13 – 10.3.235.13	10.3.235.13
15	10.3.235.14/32	10.3.235.14 – 10.3.235.14	10.3.235.14
16	10.3.235.15/32	10.3.235.15 – 10.3.235.15	10.3.235.15
17	10.3.235.16/32	10.3.235.16 – 10.3.235.16	10.3.235.16
18	10.3.235.17/32	10.3.235.17 – 10.3.235.17	10.3.235.17
19	10.3.235.18/32	10.3.235.18 – 10.3.235.18	10.3.235.18
20	10.3.235.19/32	10.3.235.19 – 10.3.235.19	10.3.235.19
21	10.3.235.20/32	10.3.235.20 – 10.3.235.20	10.3.235.20
22	10.3.235.21/32	10.3.235.21 – 10.3.235.21	10.3.235.21
23	10.3.235.22/32	10.3.235.22 – 10.3.235.22	10.3.235.22
24	10.3.235.23/32	10.3.235.23 – 10.3.235.23	10.3.235.23
25	10.3.235.24/32	10.3.235.24 – 10.3.235.24	10.3.235.24
26	10.3.235.25/32	10.3.235.25 – 10.3.235.25	10.3.235.25
27	10.3.235.26/32	10.3.235.26 – 10.3.235.26	10.3.235.26
28	10.3.235.27/32	10.3.235.27 – 10.3.235.27	10.3.235.27
29	10.3.235.28/32	10.3.235.28 – 10.3.235.28	10.3.235.28
30	10.3.235.29/32	10.3.235.29 – 10.3.235.29	10.3.235.29
31	10.3.235.30/32	10.3.235.30 – 10.3.235.30	10.3.235.30
32	10.3.235.31/32	10.3.235.31 – 10.3.235.31	10.3.235.31
33	10.3.235.32/32	10.3.235.32 – 10.3.235.32	10.3.235.32
34	10.3.235.33/32	10.3.235.33 – 10.3.235.33	10.3.235.33
35	10.3.235.34/32	10.3.235.34 – 10.3.235.34	10.3.235.34
36	10.3.235.35/32	10.3.235.35 – 10.3.235.35	10.3.235.35
37	10.3.235.36/32	10.3.235.36 – 10.3.235.36	10.3.235.36
38	10.3.235.37/32	10.3.235.37 – 10.3.235.37	10.3.235.37
39	10.3.235.38/32	10.3.235.38 – 10.3.235.38	10.3.235.38
40	10.3.235.39/32	10.3.235.39 – 10.3.235.39	10.3.235.39
41	10.3.235.40/32	10.3.235.40 – 10.3.235.40	10.3.235.40
42	10.3.235.41/32	10.3.235.41 – 10.3.235.41	10.3.235.41
43	10.3.235.42/32	10.3.235.42 – 10.3.235.42	10.3.235.42
44	10.3.235.43/32	10.3.235.43 – 10.3.235.43	10.3.235.43
45	10.3.235.44/32	10.3.235.44 – 10.3.235.44	10.3.235.44
46	10.3.235.45/32	10.3.235.45 – 10.3.235.45	10.3.235.45
47	10.3.235.46/32	10.3.235.46 – 10.3.235.46	10.3.235.46
48	10.3.235.47/32	10.3.235.47 – 10.3.235.47	10.3.235.47
49	10.3.235.48/32	10.3.235.48 – 10.3.235.48	10.3.235.48
50	10.3.235.49/32	10.3.235.49 – 10.3.235.49	10.3.235.49
51	10.3.235.50/32	10.3.235.50 – 10.3.235.50	10.3.235.50
52	10.3.235.51/32	10.3.235.51 – 10.3.235.51	10.3.235.51
53	10.3.235.52/32	10.3.235.52 – 10.3.235.52	10.3.235.52
54	10.3.235.53/32	10.3.235.53 – 10.3.235.53	10.3.235.53
55	10.3.235.54/32	10.3.235.54 – 10.3.235.54	10.3.235.54
56	10.3.235.55/32	10.3.235.55 – 10.3.235.55	10.3.235.55
57	10.3.235.56/32	10.3.235.56 – 10.3.235.56	10.3.235.56
58	10.3.235.57/32	10.3.235.57 – 10.3.235.57	10.3.235.57
59	10.3.235.58/32	10.3.235.58 – 10.3.235.58	10.3.235.58
60	10.3.235.59/32	10.3.235.59 – 10.3.235.59	10.3.235.59
61	10.3.235.60/32	10.3.235.60 – 10.3.235.60	10.3.235.60
62	10.3.235.61/32	10.3.235.61 – 10.3.235.61	10.3.235.61
63	10.3.235.62/32	10.3.235.62 – 10.3.235.62	10.3.235.62
64	10.3.235.63/32	10.3.235.63 – 10.3.235.63	10.3.235.63
65	10.3.235.64/32	10.3.235.64 – 10.3.235.64	10.3.235.64
66	10.3.235.65/32	10.3.235.65 – 10.3.235.65	10.3.235.65
67	10.3.235.66/32	10.3.235.66 – 10.3.235.66	10.3.235.66
68	10.3.235.67/32	10.3.235.67 – 10.3.235.67	10.3.235.67
69	10.3.235.68/32	10.3.235.68 – 10.3.235.68	10.3.235.68
70	10.3.235.69/32	10.3.235.69 – 10.3.235.69	10.3.235.69
71	10.3.235.70/32	10.3.235.70 – 10.3.235.70	10.3.235.70
72	10.3.235.71/32	10.3.235.71 – 10.3.235.71	10.3.235.71
73	10.3.235.72/32	10.3.235.72 – 10.3.235.72	10.3.235.72
74	10.3.235.73/32	10.3.235.73 – 10.3.235.73	10.3.235.73
75	10.3.235.74/32	10.3.235.74 – 10.3.235.74	10.3.235.74
76	10.3.235.75/32	10.3.235.75 – 10.3.235.75	10.3.235.75
77	10.3.235.76/32	10.3.235.76 – 10.3.235.76	10.3.235.76
78	10.3.235.77/32	10.3.235.77 – 10.3.235.77	10.3.235.77
79	10.3.235.78/32	10.3.235.78 – 10.3.235.78	10.3.235.78
80	10.3.235.79/32	10.3.235.79 – 10.3.235.79	10.3.235.79
81	10.3.235.80/32	10.3.235.80 – 10.3.235.80	10.3.235.80
82	10.3.235.81/32	10.3.235.81 – 10.3.235.81	10.3.235.81
83	10.3.235.82/32	10.3.235.82 – 10.3.235.82	10.3.235.82
84	10.3.235.83/32	10.3.235.83 – 10.3.235.83	10.3.235.83
85	10.3.235.84/32	10.3.235.84 – 10.3.235.84	10.3.235.84
86	10.3.235.85/32	10.3.235.85 – 10.3.235.85	10.3.235.85
87	10.3.235.86/32	10.3.235.86 – 10.3.235.86	10.3.235.86
88	10.3.235.87/32	10.3.235.87 – 10.3.235.87	10.3.235.87
89	10.3.235.88/32	10.3.235.88 – 10.3.235.88	10.3.235.88
90	10.3.235.89/32	10.3.235.89 – 10.3.235.89	10.3.235.89
91	10.3.235.90/32	10.3.235.90 – 10.3.235.90	10.3.235.90
92	10.3.235.91/32	10.3.235.91 – 10.3.235.91	10.3.235.91
93	10.3.235.92/32	10.3.235.92 – 10.3.235.92	10.3.235.92
94	10.3.235.93/32	10.3.235.93 – 10.3.235.93	10.3.235.93
95	10.3.235.94/32	10.3.235.94 – 10.3.235.94	10.3.235.94
96	10.3.235.95/32	10.3.235.95 – 10.3.235.95	10.3.235.95
97	10.3.235.96/32	10.3.235.96 – 10.3.235.96	10.3.235.96
98	10.3.235.97/32	10.3.235.97 – 10.3.235.97	10.3.235.97
99	10.3.235.98/32	10.3.235.98 – 10.3.235.98	10.3.235.98
100	10.3.235.99/32	10.3.235.99 – 10.3.235.99	10.3.235.99
101	10.3.235.100/32	10.3.235.100 – 10.3.235.100	10.3.235.100
102	10.3.235.101/32	10.3.235.101 – 10.3.235.101	10.3.235.101
103	10.3.235.102/32	10.3.235.102 – 10.3.235.102	10.3.235.102
104	10.3.235.103/32	10.3.235.103 – 10.3.235.103	10.3.235.103
105	10.3.235.104/32	10.3.235.104 – 10.3.235.104	10.3.235.104
106	10.3.235.105/32	10.3.235.105 – 10.3.235.105	10.3.235.105
107	10.3.235.106/32	10.3.235.106 – 10.3.235.106	10.3.235.106
108	10.3.235.107/32	10.3.235.107 – 10.3.235.107	10.3.235.107
109	10.3.235.108/32	10.3.235.108 – 10.3.235.108	10.3.235.108
110	10.3.235.109/32	10.3.235.109 – 10.3.235.109	10.3.235.109
111	10.3.235.110/32	10.3.235.110 – 10.3.235.110	10.3.235.110
112	10.3.235.111/32	10.3.235.111 – 10.3.235.111	10.3.235.111
113	10.3.235.112/32	10.3.235.112 – 10.3.235.112	10.3.235.112
114	10.3.235.113/32	10.3.235.113 – 10.3.235.113	10.3.235.113
115	10.3.235.114/32	10.3.235.114 – 10.3.235.114	10.3.235.114
116	10.3.235.115/32	10.3.235.115 – 10.3.235.115	10.3.235.115
117	10.3.235.116/32	10.3.235.116 – 10.3.235.116	10.3.235.116
118	10.3.235.117/32	10.3.235.117 – 10.3.235.117	10.3.235.117
119	10.3.235.118/32	10.3.235.118 – 10.3.235.118	10.3.235.118
120	10.3.235.119/32	10.3.235.119 – 10.3.235.119	10.3.235.119
121	10.3.235.120/32	10.3.235.120 – 10.3.235.120	10.3.235.120
122	10.3.235.121/32	10.3.235.121 – 10.3.235.121	10.3.235.121
123	10.3.235.122/32	10.3.235.122 – 10.3.235.122	10.3.235.122
124	10.3.235.123/32	10.3.235.123 – 10.3.235.123	10.3.235.123
125	10.3.235.124/32	10.3.235.124 – 10.3.235.124	10.3.235.124
126	10.3.235.125/32	10.3.235.125 – 10.3.235.125	10.3.235.125
127	10.3.235.126/32	10.3.235.126 – 10.3.235.126	10.3.235.126
128	10.3.235.127/32	10.3.235.127 – 10.3.235.127	10.3.235.127
129	10.3.235.128/32	10.3.235.128 – 10.3.235.128	10.3.235.128
130	10.3.235.129/32	10.3.235.129 – 10.3.235.129	10.3.235.129
131	10.3.235.130/32	10.3.235.130 – 10.3.235.130	10.3.235.130
132	10.3.235.131/32	10.3.235.131 – 10.3.235.131	10.3.235.131
133	10.3.235.132/32	10.3.235.132 – 10.3.235.132	10.3.235.132
134	10.3.235.133/32	10.3.235.133 – 10.3.235.133	10.3.235.133
135	10.3.235.134/32	10.3.235.134 – 10.3.235.134	10.3.235.134
136	10.3.235.135/32	10.3.235.135 – 10.3.235.135	10.3.235.135
137	10.3.235.136/32	10.3.235.136 – 10.3.235.136	10.3.235.136
138	10.3.235.137/32	10.3.235.137 – 10.3.235.137	10.3.235.137
139	10.3.235.138/32	10.3.235.138 – 10.3.235.138	10.3.235.138
140	10.3.235.139/32	10.3.235.139 – 10.3.235.139	10.3.235.139
141	10.3.235.140/32	10.3.235.140 – 10.3.235.140	10.3.235.140
142	10.3.235.141/32	10.3.235.141 – 10.3.235.141	10.3.235.141
143	10.3.235.142/32	10.3.235.142 – 10.3.235.142	10.3.235.142
144	10.3.235.143/32	10.3.235.143 – 10.3.235.143	10.3.235.143
145	10.3.235.144/32	10.3.235.144 – 10.3.235.144	10.3.235.144
146	10.3.235.145/32	10.3.235.145 – 10.3.235.145	10.3.235.145
147	10.3.235.146/32	10.3.235.146 – 10.3.235.146	10.3.235.146
148	10.3.235.147/32	10.3.235.147 – 10.3.235.147	10.3.235.147
149	10.3.235.148/32	10.3.235.148 – 10.3.235.148	10.3.235.148
150	10.3.235.149/32	10.3.235.149 – 10.3.235.149	10.3.235.149
151	10.3.235.150/32	10.3.235.150 – 10.3.235.150	10.3.235.150
152	10.3.235.151/32	10.3.235.151 – 10.3.235.151	10.3.235.151
153	10.3.235.152/32	10.3.235.152 – 10.3.235.152	10.3.235.152
154	10.3.235.153/32	10.3.235.153 – 10.3.235.153	10.3.235.153
155	10.3.235.154/32	10.3.235.154 – 10.3.235.154	10.3.235.154
156	10.3.235.155/32	10.3.235.155 – 10.3.235.155	10.3.235.155
157	10.3.235.156/32	10.3.235.156 – 10.3.235.156	10.3.235.156
158	10.3.235.157/32	10.3.235.157 – 10.3.235.157	10.3.235.157
159	10.3.235.158/32	10.3.235.158 – 10.3.235.158	10.3.235.158
160	10.3.235.159/32	10.3.235.159 – 10.3.235.159	10.3.235.159
161	10.3.235.160/32	10.3.235.160 – 10.3.235.160	10.3.235.160
162	10.3.235.161/32	10.3.235.161 – 10.3.235.161	10.3.235.161
163	10.3.235.162/32	10.3.235.162 – 10.3.235.162	10.3.235.162
164	10.3.235.163/32	10.3.235.163 – 10.3.235.163	10.3.235.163
165	10.3.235.164/32	10.3.235.164 – 10.3.235.164	10.3.235.164
166	10.3.235.165/32	10.3.235.165 – 10.3.235.165	10.3.235.165
167	10.3.235.166/32	10.3.235.166 – 10.3.235.166	10.3.235.166
168	10.3.235.167/32	10.3.235.167 – 10.3.235.167	10.3.235.167
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170	10.3.235.169/32	10.3.235.169 – 10.3.235.169	10.3.235.169
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210	10.3.235.209/32	10.3.235.209 – 10.3.235.209	10.3.235.209
211	10.3.235.210/32	10.3.235.210 – 10.3.235.210	10.3.235.210
212	10.3.235.211/32	10.3.235.211 – 10.3.235.211	10.3.235.211
213	10.3.235.212/32	10.3.235.212 – 10.3.235.212	10.3.235.212
214	10.3.235.213/32	10.3.235.213 – 10.3.235.213	10.3.235.213
215	10.3.235.214/32	10.3.235.214 – 10.3.235.214	10.3.235.214
216	10.3.235.215/32	10.3.235.215 – 10.3.235.215	10.3.235.215
217	10.3.235.216/32	10.3.235.216 – 10.3.235.216	10.3.235.216
218	10.3.235.217/32	10.3.235.217 – 10.3.235.217	10.3.235.217
219	10.3.235.218/32	10.3.235.218 – 10.3.235.218	10.3.235.218
220	10.3.235.219/32	10.3.235.219 – 10.3.235.219	10.3.235.219
221	10.3.235.220/32	10.3.235.220 – 10.3.235.220	10.3.235.220
222	10.3.235.221/32	10.3.235.221 – 10.3.235.221	10.3.235.221
223	10.3.235.222/32	10.3.235.222 – 10.3.235.222	10.3.235.222
224	10.3.235.223/32	10.3.235.223 – 10.3.235.223	10.3.235.223
225	10.3.235.224/32	10.3.235.224 – 10.3.235.224	10.3.235.224
226	10.3.235.225/32	10.3.235.225 – 10.3.235.225	10.3.235.225
227	10.3.235.226/32	10.3.235.226 – 10.3.235.226	10.3.235.226
228	10.3.235.227/32	10.3.235.227 – 10.3.235.227	10.3.235.227
229	10.3.235.228/32	10.3.235.228 – 10.3.235.228	10.3.235.228
230	10.3.235.229/32	10.3.235.229 – 10.3.235.229	10.3.235.229
231	10.3.235.230/32	10.3.235.230 – 10.3.235.230	10.3.235.230
232	10.3.235.231/32	10.3.235.231 – 10.3.235.231	10.3.235.231
233	10.3.235.232/32	10.3.235.232 – 10.3.235.232	10.3.235.232
234	10.3.235.233/32	10.3.235.233 – 10.3.235.233	10.3.235.233
235	10.3.235.234/32	10.3.235.234 – 10.3.235.234	10.3.235.234
236	10.3.235.235/32	10.3.235.235 – 10.3.235.235	10.3.235.235
237	10.3.235.236/32	10.3.235.236 – 10.3.235.236	10.3.235.236
238	10.3.235.237/32	10.3.235.237 – 10.3.235.237	10.3.235.237
239	10.3.235.238/32	10.3.235.238 – 10.3.235.238	10.3.235.238
240	10.3.235.239/32	10.3.235.239 – 10.3.235.239	10.3.235.239
241	10.3.235.240/32	10.3.235.240 – 10.3.235.240	10.3.235.240
242	10.3.235.241/32	10.3.235.241 – 10.3.235.241	10.3.235.241
243	10.3.235.242/32	10.3.235.242 – 10.3.235.242	10.3.235.242
244	10.3.235.243/32	10.3.235.243 – 10.3.235.243	10.3.235.243
245	10.3.235.244/32	10.3.235.244 – 10.3.235.244	10.3.235.244
246	10.3.235.245/32	10.3.235.245 – 10.3.235.245	10.3.235.245
247	10.3.235.246/32	10.3.235.246 – 10.3.235.246	10.3.235.246
248	10.3.235.247/32	10.3.235.247 – 10.3.235.247	10.3.235.247
249	10.3.235.248/32	10.3.235.248 – 10.3.235.248	10.3.235.248
250	10.3.235.249/32	10.3.235.249 – 10.3.235.249	10.3.235.249
251	10.3.235.250/32	10.3.235.250 – 10.3.235.250	10.3.235.250
252	10.3.235.251/32	10.3.235.251 – 10.3.235.251	10.3.235.251
253	10.3.235.252/32	10.3.235.252 – 10.3.235.252	10.3.235.252
254	10.3.235.253/32	10.3.235.253 – 10.3.235.253	10.3.235.253
255	10.3.235.254/32	10.3.235.254 – 10.3.235.254	10.3.235.254
256	10.3.235.255/32	10.3.235.255 – 10.3.235.255	10.3.235.255

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 →