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)10.78.136.0/24

network10.78.136.0/24

broadcast10.78.136.255

first host10.78.136.1

last host10.78.136.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.78.136.0/24

address00001010.01001110.10001000.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.01001110.10001000.00000000

broadcast00001010.01001110.10001000.11111111

green = network part, grey = host part

hex0x0a4e8800

decimal172918784

reverse dns0.136.78.10.in-addr.arpa

ipv4-mapped::ffff:a4e:8800

/24 split into /32 · 256 subnets

close ×

#	network	host range	broadcast
1	10.78.136.0/32	10.78.136.0 – 10.78.136.0	10.78.136.0
2	10.78.136.1/32	10.78.136.1 – 10.78.136.1	10.78.136.1
3	10.78.136.2/32	10.78.136.2 – 10.78.136.2	10.78.136.2
4	10.78.136.3/32	10.78.136.3 – 10.78.136.3	10.78.136.3
5	10.78.136.4/32	10.78.136.4 – 10.78.136.4	10.78.136.4
6	10.78.136.5/32	10.78.136.5 – 10.78.136.5	10.78.136.5
7	10.78.136.6/32	10.78.136.6 – 10.78.136.6	10.78.136.6
8	10.78.136.7/32	10.78.136.7 – 10.78.136.7	10.78.136.7
9	10.78.136.8/32	10.78.136.8 – 10.78.136.8	10.78.136.8
10	10.78.136.9/32	10.78.136.9 – 10.78.136.9	10.78.136.9
11	10.78.136.10/32	10.78.136.10 – 10.78.136.10	10.78.136.10
12	10.78.136.11/32	10.78.136.11 – 10.78.136.11	10.78.136.11
13	10.78.136.12/32	10.78.136.12 – 10.78.136.12	10.78.136.12
14	10.78.136.13/32	10.78.136.13 – 10.78.136.13	10.78.136.13
15	10.78.136.14/32	10.78.136.14 – 10.78.136.14	10.78.136.14
16	10.78.136.15/32	10.78.136.15 – 10.78.136.15	10.78.136.15
17	10.78.136.16/32	10.78.136.16 – 10.78.136.16	10.78.136.16
18	10.78.136.17/32	10.78.136.17 – 10.78.136.17	10.78.136.17
19	10.78.136.18/32	10.78.136.18 – 10.78.136.18	10.78.136.18
20	10.78.136.19/32	10.78.136.19 – 10.78.136.19	10.78.136.19
21	10.78.136.20/32	10.78.136.20 – 10.78.136.20	10.78.136.20
22	10.78.136.21/32	10.78.136.21 – 10.78.136.21	10.78.136.21
23	10.78.136.22/32	10.78.136.22 – 10.78.136.22	10.78.136.22
24	10.78.136.23/32	10.78.136.23 – 10.78.136.23	10.78.136.23
25	10.78.136.24/32	10.78.136.24 – 10.78.136.24	10.78.136.24
26	10.78.136.25/32	10.78.136.25 – 10.78.136.25	10.78.136.25
27	10.78.136.26/32	10.78.136.26 – 10.78.136.26	10.78.136.26
28	10.78.136.27/32	10.78.136.27 – 10.78.136.27	10.78.136.27
29	10.78.136.28/32	10.78.136.28 – 10.78.136.28	10.78.136.28
30	10.78.136.29/32	10.78.136.29 – 10.78.136.29	10.78.136.29
31	10.78.136.30/32	10.78.136.30 – 10.78.136.30	10.78.136.30
32	10.78.136.31/32	10.78.136.31 – 10.78.136.31	10.78.136.31
33	10.78.136.32/32	10.78.136.32 – 10.78.136.32	10.78.136.32
34	10.78.136.33/32	10.78.136.33 – 10.78.136.33	10.78.136.33
35	10.78.136.34/32	10.78.136.34 – 10.78.136.34	10.78.136.34
36	10.78.136.35/32	10.78.136.35 – 10.78.136.35	10.78.136.35
37	10.78.136.36/32	10.78.136.36 – 10.78.136.36	10.78.136.36
38	10.78.136.37/32	10.78.136.37 – 10.78.136.37	10.78.136.37
39	10.78.136.38/32	10.78.136.38 – 10.78.136.38	10.78.136.38
40	10.78.136.39/32	10.78.136.39 – 10.78.136.39	10.78.136.39
41	10.78.136.40/32	10.78.136.40 – 10.78.136.40	10.78.136.40
42	10.78.136.41/32	10.78.136.41 – 10.78.136.41	10.78.136.41
43	10.78.136.42/32	10.78.136.42 – 10.78.136.42	10.78.136.42
44	10.78.136.43/32	10.78.136.43 – 10.78.136.43	10.78.136.43
45	10.78.136.44/32	10.78.136.44 – 10.78.136.44	10.78.136.44
46	10.78.136.45/32	10.78.136.45 – 10.78.136.45	10.78.136.45
47	10.78.136.46/32	10.78.136.46 – 10.78.136.46	10.78.136.46
48	10.78.136.47/32	10.78.136.47 – 10.78.136.47	10.78.136.47
49	10.78.136.48/32	10.78.136.48 – 10.78.136.48	10.78.136.48
50	10.78.136.49/32	10.78.136.49 – 10.78.136.49	10.78.136.49
51	10.78.136.50/32	10.78.136.50 – 10.78.136.50	10.78.136.50
52	10.78.136.51/32	10.78.136.51 – 10.78.136.51	10.78.136.51
53	10.78.136.52/32	10.78.136.52 – 10.78.136.52	10.78.136.52
54	10.78.136.53/32	10.78.136.53 – 10.78.136.53	10.78.136.53
55	10.78.136.54/32	10.78.136.54 – 10.78.136.54	10.78.136.54
56	10.78.136.55/32	10.78.136.55 – 10.78.136.55	10.78.136.55
57	10.78.136.56/32	10.78.136.56 – 10.78.136.56	10.78.136.56
58	10.78.136.57/32	10.78.136.57 – 10.78.136.57	10.78.136.57
59	10.78.136.58/32	10.78.136.58 – 10.78.136.58	10.78.136.58
60	10.78.136.59/32	10.78.136.59 – 10.78.136.59	10.78.136.59
61	10.78.136.60/32	10.78.136.60 – 10.78.136.60	10.78.136.60
62	10.78.136.61/32	10.78.136.61 – 10.78.136.61	10.78.136.61
63	10.78.136.62/32	10.78.136.62 – 10.78.136.62	10.78.136.62
64	10.78.136.63/32	10.78.136.63 – 10.78.136.63	10.78.136.63
65	10.78.136.64/32	10.78.136.64 – 10.78.136.64	10.78.136.64
66	10.78.136.65/32	10.78.136.65 – 10.78.136.65	10.78.136.65
67	10.78.136.66/32	10.78.136.66 – 10.78.136.66	10.78.136.66
68	10.78.136.67/32	10.78.136.67 – 10.78.136.67	10.78.136.67
69	10.78.136.68/32	10.78.136.68 – 10.78.136.68	10.78.136.68
70	10.78.136.69/32	10.78.136.69 – 10.78.136.69	10.78.136.69
71	10.78.136.70/32	10.78.136.70 – 10.78.136.70	10.78.136.70
72	10.78.136.71/32	10.78.136.71 – 10.78.136.71	10.78.136.71
73	10.78.136.72/32	10.78.136.72 – 10.78.136.72	10.78.136.72
74	10.78.136.73/32	10.78.136.73 – 10.78.136.73	10.78.136.73
75	10.78.136.74/32	10.78.136.74 – 10.78.136.74	10.78.136.74
76	10.78.136.75/32	10.78.136.75 – 10.78.136.75	10.78.136.75
77	10.78.136.76/32	10.78.136.76 – 10.78.136.76	10.78.136.76
78	10.78.136.77/32	10.78.136.77 – 10.78.136.77	10.78.136.77
79	10.78.136.78/32	10.78.136.78 – 10.78.136.78	10.78.136.78
80	10.78.136.79/32	10.78.136.79 – 10.78.136.79	10.78.136.79
81	10.78.136.80/32	10.78.136.80 – 10.78.136.80	10.78.136.80
82	10.78.136.81/32	10.78.136.81 – 10.78.136.81	10.78.136.81
83	10.78.136.82/32	10.78.136.82 – 10.78.136.82	10.78.136.82
84	10.78.136.83/32	10.78.136.83 – 10.78.136.83	10.78.136.83
85	10.78.136.84/32	10.78.136.84 – 10.78.136.84	10.78.136.84
86	10.78.136.85/32	10.78.136.85 – 10.78.136.85	10.78.136.85
87	10.78.136.86/32	10.78.136.86 – 10.78.136.86	10.78.136.86
88	10.78.136.87/32	10.78.136.87 – 10.78.136.87	10.78.136.87
89	10.78.136.88/32	10.78.136.88 – 10.78.136.88	10.78.136.88
90	10.78.136.89/32	10.78.136.89 – 10.78.136.89	10.78.136.89
91	10.78.136.90/32	10.78.136.90 – 10.78.136.90	10.78.136.90
92	10.78.136.91/32	10.78.136.91 – 10.78.136.91	10.78.136.91
93	10.78.136.92/32	10.78.136.92 – 10.78.136.92	10.78.136.92
94	10.78.136.93/32	10.78.136.93 – 10.78.136.93	10.78.136.93
95	10.78.136.94/32	10.78.136.94 – 10.78.136.94	10.78.136.94
96	10.78.136.95/32	10.78.136.95 – 10.78.136.95	10.78.136.95
97	10.78.136.96/32	10.78.136.96 – 10.78.136.96	10.78.136.96
98	10.78.136.97/32	10.78.136.97 – 10.78.136.97	10.78.136.97
99	10.78.136.98/32	10.78.136.98 – 10.78.136.98	10.78.136.98
100	10.78.136.99/32	10.78.136.99 – 10.78.136.99	10.78.136.99
101	10.78.136.100/32	10.78.136.100 – 10.78.136.100	10.78.136.100
102	10.78.136.101/32	10.78.136.101 – 10.78.136.101	10.78.136.101
103	10.78.136.102/32	10.78.136.102 – 10.78.136.102	10.78.136.102
104	10.78.136.103/32	10.78.136.103 – 10.78.136.103	10.78.136.103
105	10.78.136.104/32	10.78.136.104 – 10.78.136.104	10.78.136.104
106	10.78.136.105/32	10.78.136.105 – 10.78.136.105	10.78.136.105
107	10.78.136.106/32	10.78.136.106 – 10.78.136.106	10.78.136.106
108	10.78.136.107/32	10.78.136.107 – 10.78.136.107	10.78.136.107
109	10.78.136.108/32	10.78.136.108 – 10.78.136.108	10.78.136.108
110	10.78.136.109/32	10.78.136.109 – 10.78.136.109	10.78.136.109
111	10.78.136.110/32	10.78.136.110 – 10.78.136.110	10.78.136.110
112	10.78.136.111/32	10.78.136.111 – 10.78.136.111	10.78.136.111
113	10.78.136.112/32	10.78.136.112 – 10.78.136.112	10.78.136.112
114	10.78.136.113/32	10.78.136.113 – 10.78.136.113	10.78.136.113
115	10.78.136.114/32	10.78.136.114 – 10.78.136.114	10.78.136.114
116	10.78.136.115/32	10.78.136.115 – 10.78.136.115	10.78.136.115
117	10.78.136.116/32	10.78.136.116 – 10.78.136.116	10.78.136.116
118	10.78.136.117/32	10.78.136.117 – 10.78.136.117	10.78.136.117
119	10.78.136.118/32	10.78.136.118 – 10.78.136.118	10.78.136.118
120	10.78.136.119/32	10.78.136.119 – 10.78.136.119	10.78.136.119
121	10.78.136.120/32	10.78.136.120 – 10.78.136.120	10.78.136.120
122	10.78.136.121/32	10.78.136.121 – 10.78.136.121	10.78.136.121
123	10.78.136.122/32	10.78.136.122 – 10.78.136.122	10.78.136.122
124	10.78.136.123/32	10.78.136.123 – 10.78.136.123	10.78.136.123
125	10.78.136.124/32	10.78.136.124 – 10.78.136.124	10.78.136.124
126	10.78.136.125/32	10.78.136.125 – 10.78.136.125	10.78.136.125
127	10.78.136.126/32	10.78.136.126 – 10.78.136.126	10.78.136.126
128	10.78.136.127/32	10.78.136.127 – 10.78.136.127	10.78.136.127
129	10.78.136.128/32	10.78.136.128 – 10.78.136.128	10.78.136.128
130	10.78.136.129/32	10.78.136.129 – 10.78.136.129	10.78.136.129
131	10.78.136.130/32	10.78.136.130 – 10.78.136.130	10.78.136.130
132	10.78.136.131/32	10.78.136.131 – 10.78.136.131	10.78.136.131
133	10.78.136.132/32	10.78.136.132 – 10.78.136.132	10.78.136.132
134	10.78.136.133/32	10.78.136.133 – 10.78.136.133	10.78.136.133
135	10.78.136.134/32	10.78.136.134 – 10.78.136.134	10.78.136.134
136	10.78.136.135/32	10.78.136.135 – 10.78.136.135	10.78.136.135
137	10.78.136.136/32	10.78.136.136 – 10.78.136.136	10.78.136.136
138	10.78.136.137/32	10.78.136.137 – 10.78.136.137	10.78.136.137
139	10.78.136.138/32	10.78.136.138 – 10.78.136.138	10.78.136.138
140	10.78.136.139/32	10.78.136.139 – 10.78.136.139	10.78.136.139
141	10.78.136.140/32	10.78.136.140 – 10.78.136.140	10.78.136.140
142	10.78.136.141/32	10.78.136.141 – 10.78.136.141	10.78.136.141
143	10.78.136.142/32	10.78.136.142 – 10.78.136.142	10.78.136.142
144	10.78.136.143/32	10.78.136.143 – 10.78.136.143	10.78.136.143
145	10.78.136.144/32	10.78.136.144 – 10.78.136.144	10.78.136.144
146	10.78.136.145/32	10.78.136.145 – 10.78.136.145	10.78.136.145
147	10.78.136.146/32	10.78.136.146 – 10.78.136.146	10.78.136.146
148	10.78.136.147/32	10.78.136.147 – 10.78.136.147	10.78.136.147
149	10.78.136.148/32	10.78.136.148 – 10.78.136.148	10.78.136.148
150	10.78.136.149/32	10.78.136.149 – 10.78.136.149	10.78.136.149
151	10.78.136.150/32	10.78.136.150 – 10.78.136.150	10.78.136.150
152	10.78.136.151/32	10.78.136.151 – 10.78.136.151	10.78.136.151
153	10.78.136.152/32	10.78.136.152 – 10.78.136.152	10.78.136.152
154	10.78.136.153/32	10.78.136.153 – 10.78.136.153	10.78.136.153
155	10.78.136.154/32	10.78.136.154 – 10.78.136.154	10.78.136.154
156	10.78.136.155/32	10.78.136.155 – 10.78.136.155	10.78.136.155
157	10.78.136.156/32	10.78.136.156 – 10.78.136.156	10.78.136.156
158	10.78.136.157/32	10.78.136.157 – 10.78.136.157	10.78.136.157
159	10.78.136.158/32	10.78.136.158 – 10.78.136.158	10.78.136.158
160	10.78.136.159/32	10.78.136.159 – 10.78.136.159	10.78.136.159
161	10.78.136.160/32	10.78.136.160 – 10.78.136.160	10.78.136.160
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210	10.78.136.209/32	10.78.136.209 – 10.78.136.209	10.78.136.209
211	10.78.136.210/32	10.78.136.210 – 10.78.136.210	10.78.136.210
212	10.78.136.211/32	10.78.136.211 – 10.78.136.211	10.78.136.211
213	10.78.136.212/32	10.78.136.212 – 10.78.136.212	10.78.136.212
214	10.78.136.213/32	10.78.136.213 – 10.78.136.213	10.78.136.213
215	10.78.136.214/32	10.78.136.214 – 10.78.136.214	10.78.136.214
216	10.78.136.215/32	10.78.136.215 – 10.78.136.215	10.78.136.215
217	10.78.136.216/32	10.78.136.216 – 10.78.136.216	10.78.136.216
218	10.78.136.217/32	10.78.136.217 – 10.78.136.217	10.78.136.217
219	10.78.136.218/32	10.78.136.218 – 10.78.136.218	10.78.136.218
220	10.78.136.219/32	10.78.136.219 – 10.78.136.219	10.78.136.219
221	10.78.136.220/32	10.78.136.220 – 10.78.136.220	10.78.136.220
222	10.78.136.221/32	10.78.136.221 – 10.78.136.221	10.78.136.221
223	10.78.136.222/32	10.78.136.222 – 10.78.136.222	10.78.136.222
224	10.78.136.223/32	10.78.136.223 – 10.78.136.223	10.78.136.223
225	10.78.136.224/32	10.78.136.224 – 10.78.136.224	10.78.136.224
226	10.78.136.225/32	10.78.136.225 – 10.78.136.225	10.78.136.225
227	10.78.136.226/32	10.78.136.226 – 10.78.136.226	10.78.136.226
228	10.78.136.227/32	10.78.136.227 – 10.78.136.227	10.78.136.227
229	10.78.136.228/32	10.78.136.228 – 10.78.136.228	10.78.136.228
230	10.78.136.229/32	10.78.136.229 – 10.78.136.229	10.78.136.229
231	10.78.136.230/32	10.78.136.230 – 10.78.136.230	10.78.136.230
232	10.78.136.231/32	10.78.136.231 – 10.78.136.231	10.78.136.231
233	10.78.136.232/32	10.78.136.232 – 10.78.136.232	10.78.136.232
234	10.78.136.233/32	10.78.136.233 – 10.78.136.233	10.78.136.233
235	10.78.136.234/32	10.78.136.234 – 10.78.136.234	10.78.136.234
236	10.78.136.235/32	10.78.136.235 – 10.78.136.235	10.78.136.235
237	10.78.136.236/32	10.78.136.236 – 10.78.136.236	10.78.136.236
238	10.78.136.237/32	10.78.136.237 – 10.78.136.237	10.78.136.237
239	10.78.136.238/32	10.78.136.238 – 10.78.136.238	10.78.136.238
240	10.78.136.239/32	10.78.136.239 – 10.78.136.239	10.78.136.239
241	10.78.136.240/32	10.78.136.240 – 10.78.136.240	10.78.136.240
242	10.78.136.241/32	10.78.136.241 – 10.78.136.241	10.78.136.241
243	10.78.136.242/32	10.78.136.242 – 10.78.136.242	10.78.136.242
244	10.78.136.243/32	10.78.136.243 – 10.78.136.243	10.78.136.243
245	10.78.136.244/32	10.78.136.244 – 10.78.136.244	10.78.136.244
246	10.78.136.245/32	10.78.136.245 – 10.78.136.245	10.78.136.245
247	10.78.136.246/32	10.78.136.246 – 10.78.136.246	10.78.136.246
248	10.78.136.247/32	10.78.136.247 – 10.78.136.247	10.78.136.247
249	10.78.136.248/32	10.78.136.248 – 10.78.136.248	10.78.136.248
250	10.78.136.249/32	10.78.136.249 – 10.78.136.249	10.78.136.249
251	10.78.136.250/32	10.78.136.250 – 10.78.136.250	10.78.136.250
252	10.78.136.251/32	10.78.136.251 – 10.78.136.251	10.78.136.251
253	10.78.136.252/32	10.78.136.252 – 10.78.136.252	10.78.136.252
254	10.78.136.253/32	10.78.136.253 – 10.78.136.253	10.78.136.253
255	10.78.136.254/32	10.78.136.254 – 10.78.136.254	10.78.136.254
256	10.78.136.255/32	10.78.136.255 – 10.78.136.255	10.78.136.255

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 →