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)10.78.207.0/24

network10.78.207.0/24

broadcast10.78.207.255

first host10.78.207.1

last host10.78.207.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.78.207.0/24

address00001010.01001110.11001111.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.01001110.11001111.00000000

broadcast00001010.01001110.11001111.11111111

green = network part, grey = host part

hex0x0a4ecf00

decimal172936960

reverse dns0.207.78.10.in-addr.arpa

ipv4-mapped::ffff:a4e:cf00

/24 split into /32 · 256 subnets

close ×

#	network	host range	broadcast
1	10.78.207.0/32	10.78.207.0 – 10.78.207.0	10.78.207.0
2	10.78.207.1/32	10.78.207.1 – 10.78.207.1	10.78.207.1
3	10.78.207.2/32	10.78.207.2 – 10.78.207.2	10.78.207.2
4	10.78.207.3/32	10.78.207.3 – 10.78.207.3	10.78.207.3
5	10.78.207.4/32	10.78.207.4 – 10.78.207.4	10.78.207.4
6	10.78.207.5/32	10.78.207.5 – 10.78.207.5	10.78.207.5
7	10.78.207.6/32	10.78.207.6 – 10.78.207.6	10.78.207.6
8	10.78.207.7/32	10.78.207.7 – 10.78.207.7	10.78.207.7
9	10.78.207.8/32	10.78.207.8 – 10.78.207.8	10.78.207.8
10	10.78.207.9/32	10.78.207.9 – 10.78.207.9	10.78.207.9
11	10.78.207.10/32	10.78.207.10 – 10.78.207.10	10.78.207.10
12	10.78.207.11/32	10.78.207.11 – 10.78.207.11	10.78.207.11
13	10.78.207.12/32	10.78.207.12 – 10.78.207.12	10.78.207.12
14	10.78.207.13/32	10.78.207.13 – 10.78.207.13	10.78.207.13
15	10.78.207.14/32	10.78.207.14 – 10.78.207.14	10.78.207.14
16	10.78.207.15/32	10.78.207.15 – 10.78.207.15	10.78.207.15
17	10.78.207.16/32	10.78.207.16 – 10.78.207.16	10.78.207.16
18	10.78.207.17/32	10.78.207.17 – 10.78.207.17	10.78.207.17
19	10.78.207.18/32	10.78.207.18 – 10.78.207.18	10.78.207.18
20	10.78.207.19/32	10.78.207.19 – 10.78.207.19	10.78.207.19
21	10.78.207.20/32	10.78.207.20 – 10.78.207.20	10.78.207.20
22	10.78.207.21/32	10.78.207.21 – 10.78.207.21	10.78.207.21
23	10.78.207.22/32	10.78.207.22 – 10.78.207.22	10.78.207.22
24	10.78.207.23/32	10.78.207.23 – 10.78.207.23	10.78.207.23
25	10.78.207.24/32	10.78.207.24 – 10.78.207.24	10.78.207.24
26	10.78.207.25/32	10.78.207.25 – 10.78.207.25	10.78.207.25
27	10.78.207.26/32	10.78.207.26 – 10.78.207.26	10.78.207.26
28	10.78.207.27/32	10.78.207.27 – 10.78.207.27	10.78.207.27
29	10.78.207.28/32	10.78.207.28 – 10.78.207.28	10.78.207.28
30	10.78.207.29/32	10.78.207.29 – 10.78.207.29	10.78.207.29
31	10.78.207.30/32	10.78.207.30 – 10.78.207.30	10.78.207.30
32	10.78.207.31/32	10.78.207.31 – 10.78.207.31	10.78.207.31
33	10.78.207.32/32	10.78.207.32 – 10.78.207.32	10.78.207.32
34	10.78.207.33/32	10.78.207.33 – 10.78.207.33	10.78.207.33
35	10.78.207.34/32	10.78.207.34 – 10.78.207.34	10.78.207.34
36	10.78.207.35/32	10.78.207.35 – 10.78.207.35	10.78.207.35
37	10.78.207.36/32	10.78.207.36 – 10.78.207.36	10.78.207.36
38	10.78.207.37/32	10.78.207.37 – 10.78.207.37	10.78.207.37
39	10.78.207.38/32	10.78.207.38 – 10.78.207.38	10.78.207.38
40	10.78.207.39/32	10.78.207.39 – 10.78.207.39	10.78.207.39
41	10.78.207.40/32	10.78.207.40 – 10.78.207.40	10.78.207.40
42	10.78.207.41/32	10.78.207.41 – 10.78.207.41	10.78.207.41
43	10.78.207.42/32	10.78.207.42 – 10.78.207.42	10.78.207.42
44	10.78.207.43/32	10.78.207.43 – 10.78.207.43	10.78.207.43
45	10.78.207.44/32	10.78.207.44 – 10.78.207.44	10.78.207.44
46	10.78.207.45/32	10.78.207.45 – 10.78.207.45	10.78.207.45
47	10.78.207.46/32	10.78.207.46 – 10.78.207.46	10.78.207.46
48	10.78.207.47/32	10.78.207.47 – 10.78.207.47	10.78.207.47
49	10.78.207.48/32	10.78.207.48 – 10.78.207.48	10.78.207.48
50	10.78.207.49/32	10.78.207.49 – 10.78.207.49	10.78.207.49
51	10.78.207.50/32	10.78.207.50 – 10.78.207.50	10.78.207.50
52	10.78.207.51/32	10.78.207.51 – 10.78.207.51	10.78.207.51
53	10.78.207.52/32	10.78.207.52 – 10.78.207.52	10.78.207.52
54	10.78.207.53/32	10.78.207.53 – 10.78.207.53	10.78.207.53
55	10.78.207.54/32	10.78.207.54 – 10.78.207.54	10.78.207.54
56	10.78.207.55/32	10.78.207.55 – 10.78.207.55	10.78.207.55
57	10.78.207.56/32	10.78.207.56 – 10.78.207.56	10.78.207.56
58	10.78.207.57/32	10.78.207.57 – 10.78.207.57	10.78.207.57
59	10.78.207.58/32	10.78.207.58 – 10.78.207.58	10.78.207.58
60	10.78.207.59/32	10.78.207.59 – 10.78.207.59	10.78.207.59
61	10.78.207.60/32	10.78.207.60 – 10.78.207.60	10.78.207.60
62	10.78.207.61/32	10.78.207.61 – 10.78.207.61	10.78.207.61
63	10.78.207.62/32	10.78.207.62 – 10.78.207.62	10.78.207.62
64	10.78.207.63/32	10.78.207.63 – 10.78.207.63	10.78.207.63
65	10.78.207.64/32	10.78.207.64 – 10.78.207.64	10.78.207.64
66	10.78.207.65/32	10.78.207.65 – 10.78.207.65	10.78.207.65
67	10.78.207.66/32	10.78.207.66 – 10.78.207.66	10.78.207.66
68	10.78.207.67/32	10.78.207.67 – 10.78.207.67	10.78.207.67
69	10.78.207.68/32	10.78.207.68 – 10.78.207.68	10.78.207.68
70	10.78.207.69/32	10.78.207.69 – 10.78.207.69	10.78.207.69
71	10.78.207.70/32	10.78.207.70 – 10.78.207.70	10.78.207.70
72	10.78.207.71/32	10.78.207.71 – 10.78.207.71	10.78.207.71
73	10.78.207.72/32	10.78.207.72 – 10.78.207.72	10.78.207.72
74	10.78.207.73/32	10.78.207.73 – 10.78.207.73	10.78.207.73
75	10.78.207.74/32	10.78.207.74 – 10.78.207.74	10.78.207.74
76	10.78.207.75/32	10.78.207.75 – 10.78.207.75	10.78.207.75
77	10.78.207.76/32	10.78.207.76 – 10.78.207.76	10.78.207.76
78	10.78.207.77/32	10.78.207.77 – 10.78.207.77	10.78.207.77
79	10.78.207.78/32	10.78.207.78 – 10.78.207.78	10.78.207.78
80	10.78.207.79/32	10.78.207.79 – 10.78.207.79	10.78.207.79
81	10.78.207.80/32	10.78.207.80 – 10.78.207.80	10.78.207.80
82	10.78.207.81/32	10.78.207.81 – 10.78.207.81	10.78.207.81
83	10.78.207.82/32	10.78.207.82 – 10.78.207.82	10.78.207.82
84	10.78.207.83/32	10.78.207.83 – 10.78.207.83	10.78.207.83
85	10.78.207.84/32	10.78.207.84 – 10.78.207.84	10.78.207.84
86	10.78.207.85/32	10.78.207.85 – 10.78.207.85	10.78.207.85
87	10.78.207.86/32	10.78.207.86 – 10.78.207.86	10.78.207.86
88	10.78.207.87/32	10.78.207.87 – 10.78.207.87	10.78.207.87
89	10.78.207.88/32	10.78.207.88 – 10.78.207.88	10.78.207.88
90	10.78.207.89/32	10.78.207.89 – 10.78.207.89	10.78.207.89
91	10.78.207.90/32	10.78.207.90 – 10.78.207.90	10.78.207.90
92	10.78.207.91/32	10.78.207.91 – 10.78.207.91	10.78.207.91
93	10.78.207.92/32	10.78.207.92 – 10.78.207.92	10.78.207.92
94	10.78.207.93/32	10.78.207.93 – 10.78.207.93	10.78.207.93
95	10.78.207.94/32	10.78.207.94 – 10.78.207.94	10.78.207.94
96	10.78.207.95/32	10.78.207.95 – 10.78.207.95	10.78.207.95
97	10.78.207.96/32	10.78.207.96 – 10.78.207.96	10.78.207.96
98	10.78.207.97/32	10.78.207.97 – 10.78.207.97	10.78.207.97
99	10.78.207.98/32	10.78.207.98 – 10.78.207.98	10.78.207.98
100	10.78.207.99/32	10.78.207.99 – 10.78.207.99	10.78.207.99
101	10.78.207.100/32	10.78.207.100 – 10.78.207.100	10.78.207.100
102	10.78.207.101/32	10.78.207.101 – 10.78.207.101	10.78.207.101
103	10.78.207.102/32	10.78.207.102 – 10.78.207.102	10.78.207.102
104	10.78.207.103/32	10.78.207.103 – 10.78.207.103	10.78.207.103
105	10.78.207.104/32	10.78.207.104 – 10.78.207.104	10.78.207.104
106	10.78.207.105/32	10.78.207.105 – 10.78.207.105	10.78.207.105
107	10.78.207.106/32	10.78.207.106 – 10.78.207.106	10.78.207.106
108	10.78.207.107/32	10.78.207.107 – 10.78.207.107	10.78.207.107
109	10.78.207.108/32	10.78.207.108 – 10.78.207.108	10.78.207.108
110	10.78.207.109/32	10.78.207.109 – 10.78.207.109	10.78.207.109
111	10.78.207.110/32	10.78.207.110 – 10.78.207.110	10.78.207.110
112	10.78.207.111/32	10.78.207.111 – 10.78.207.111	10.78.207.111
113	10.78.207.112/32	10.78.207.112 – 10.78.207.112	10.78.207.112
114	10.78.207.113/32	10.78.207.113 – 10.78.207.113	10.78.207.113
115	10.78.207.114/32	10.78.207.114 – 10.78.207.114	10.78.207.114
116	10.78.207.115/32	10.78.207.115 – 10.78.207.115	10.78.207.115
117	10.78.207.116/32	10.78.207.116 – 10.78.207.116	10.78.207.116
118	10.78.207.117/32	10.78.207.117 – 10.78.207.117	10.78.207.117
119	10.78.207.118/32	10.78.207.118 – 10.78.207.118	10.78.207.118
120	10.78.207.119/32	10.78.207.119 – 10.78.207.119	10.78.207.119
121	10.78.207.120/32	10.78.207.120 – 10.78.207.120	10.78.207.120
122	10.78.207.121/32	10.78.207.121 – 10.78.207.121	10.78.207.121
123	10.78.207.122/32	10.78.207.122 – 10.78.207.122	10.78.207.122
124	10.78.207.123/32	10.78.207.123 – 10.78.207.123	10.78.207.123
125	10.78.207.124/32	10.78.207.124 – 10.78.207.124	10.78.207.124
126	10.78.207.125/32	10.78.207.125 – 10.78.207.125	10.78.207.125
127	10.78.207.126/32	10.78.207.126 – 10.78.207.126	10.78.207.126
128	10.78.207.127/32	10.78.207.127 – 10.78.207.127	10.78.207.127
129	10.78.207.128/32	10.78.207.128 – 10.78.207.128	10.78.207.128
130	10.78.207.129/32	10.78.207.129 – 10.78.207.129	10.78.207.129
131	10.78.207.130/32	10.78.207.130 – 10.78.207.130	10.78.207.130
132	10.78.207.131/32	10.78.207.131 – 10.78.207.131	10.78.207.131
133	10.78.207.132/32	10.78.207.132 – 10.78.207.132	10.78.207.132
134	10.78.207.133/32	10.78.207.133 – 10.78.207.133	10.78.207.133
135	10.78.207.134/32	10.78.207.134 – 10.78.207.134	10.78.207.134
136	10.78.207.135/32	10.78.207.135 – 10.78.207.135	10.78.207.135
137	10.78.207.136/32	10.78.207.136 – 10.78.207.136	10.78.207.136
138	10.78.207.137/32	10.78.207.137 – 10.78.207.137	10.78.207.137
139	10.78.207.138/32	10.78.207.138 – 10.78.207.138	10.78.207.138
140	10.78.207.139/32	10.78.207.139 – 10.78.207.139	10.78.207.139
141	10.78.207.140/32	10.78.207.140 – 10.78.207.140	10.78.207.140
142	10.78.207.141/32	10.78.207.141 – 10.78.207.141	10.78.207.141
143	10.78.207.142/32	10.78.207.142 – 10.78.207.142	10.78.207.142
144	10.78.207.143/32	10.78.207.143 – 10.78.207.143	10.78.207.143
145	10.78.207.144/32	10.78.207.144 – 10.78.207.144	10.78.207.144
146	10.78.207.145/32	10.78.207.145 – 10.78.207.145	10.78.207.145
147	10.78.207.146/32	10.78.207.146 – 10.78.207.146	10.78.207.146
148	10.78.207.147/32	10.78.207.147 – 10.78.207.147	10.78.207.147
149	10.78.207.148/32	10.78.207.148 – 10.78.207.148	10.78.207.148
150	10.78.207.149/32	10.78.207.149 – 10.78.207.149	10.78.207.149
151	10.78.207.150/32	10.78.207.150 – 10.78.207.150	10.78.207.150
152	10.78.207.151/32	10.78.207.151 – 10.78.207.151	10.78.207.151
153	10.78.207.152/32	10.78.207.152 – 10.78.207.152	10.78.207.152
154	10.78.207.153/32	10.78.207.153 – 10.78.207.153	10.78.207.153
155	10.78.207.154/32	10.78.207.154 – 10.78.207.154	10.78.207.154
156	10.78.207.155/32	10.78.207.155 – 10.78.207.155	10.78.207.155
157	10.78.207.156/32	10.78.207.156 – 10.78.207.156	10.78.207.156
158	10.78.207.157/32	10.78.207.157 – 10.78.207.157	10.78.207.157
159	10.78.207.158/32	10.78.207.158 – 10.78.207.158	10.78.207.158
160	10.78.207.159/32	10.78.207.159 – 10.78.207.159	10.78.207.159
161	10.78.207.160/32	10.78.207.160 – 10.78.207.160	10.78.207.160
162	10.78.207.161/32	10.78.207.161 – 10.78.207.161	10.78.207.161
163	10.78.207.162/32	10.78.207.162 – 10.78.207.162	10.78.207.162
164	10.78.207.163/32	10.78.207.163 – 10.78.207.163	10.78.207.163
165	10.78.207.164/32	10.78.207.164 – 10.78.207.164	10.78.207.164
166	10.78.207.165/32	10.78.207.165 – 10.78.207.165	10.78.207.165
167	10.78.207.166/32	10.78.207.166 – 10.78.207.166	10.78.207.166
168	10.78.207.167/32	10.78.207.167 – 10.78.207.167	10.78.207.167
169	10.78.207.168/32	10.78.207.168 – 10.78.207.168	10.78.207.168
170	10.78.207.169/32	10.78.207.169 – 10.78.207.169	10.78.207.169
171	10.78.207.170/32	10.78.207.170 – 10.78.207.170	10.78.207.170
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174	10.78.207.173/32	10.78.207.173 – 10.78.207.173	10.78.207.173
175	10.78.207.174/32	10.78.207.174 – 10.78.207.174	10.78.207.174
176	10.78.207.175/32	10.78.207.175 – 10.78.207.175	10.78.207.175
177	10.78.207.176/32	10.78.207.176 – 10.78.207.176	10.78.207.176
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201	10.78.207.200/32	10.78.207.200 – 10.78.207.200	10.78.207.200
202	10.78.207.201/32	10.78.207.201 – 10.78.207.201	10.78.207.201
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205	10.78.207.204/32	10.78.207.204 – 10.78.207.204	10.78.207.204
206	10.78.207.205/32	10.78.207.205 – 10.78.207.205	10.78.207.205
207	10.78.207.206/32	10.78.207.206 – 10.78.207.206	10.78.207.206
208	10.78.207.207/32	10.78.207.207 – 10.78.207.207	10.78.207.207
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210	10.78.207.209/32	10.78.207.209 – 10.78.207.209	10.78.207.209
211	10.78.207.210/32	10.78.207.210 – 10.78.207.210	10.78.207.210
212	10.78.207.211/32	10.78.207.211 – 10.78.207.211	10.78.207.211
213	10.78.207.212/32	10.78.207.212 – 10.78.207.212	10.78.207.212
214	10.78.207.213/32	10.78.207.213 – 10.78.207.213	10.78.207.213
215	10.78.207.214/32	10.78.207.214 – 10.78.207.214	10.78.207.214
216	10.78.207.215/32	10.78.207.215 – 10.78.207.215	10.78.207.215
217	10.78.207.216/32	10.78.207.216 – 10.78.207.216	10.78.207.216
218	10.78.207.217/32	10.78.207.217 – 10.78.207.217	10.78.207.217
219	10.78.207.218/32	10.78.207.218 – 10.78.207.218	10.78.207.218
220	10.78.207.219/32	10.78.207.219 – 10.78.207.219	10.78.207.219
221	10.78.207.220/32	10.78.207.220 – 10.78.207.220	10.78.207.220
222	10.78.207.221/32	10.78.207.221 – 10.78.207.221	10.78.207.221
223	10.78.207.222/32	10.78.207.222 – 10.78.207.222	10.78.207.222
224	10.78.207.223/32	10.78.207.223 – 10.78.207.223	10.78.207.223
225	10.78.207.224/32	10.78.207.224 – 10.78.207.224	10.78.207.224
226	10.78.207.225/32	10.78.207.225 – 10.78.207.225	10.78.207.225
227	10.78.207.226/32	10.78.207.226 – 10.78.207.226	10.78.207.226
228	10.78.207.227/32	10.78.207.227 – 10.78.207.227	10.78.207.227
229	10.78.207.228/32	10.78.207.228 – 10.78.207.228	10.78.207.228
230	10.78.207.229/32	10.78.207.229 – 10.78.207.229	10.78.207.229
231	10.78.207.230/32	10.78.207.230 – 10.78.207.230	10.78.207.230
232	10.78.207.231/32	10.78.207.231 – 10.78.207.231	10.78.207.231
233	10.78.207.232/32	10.78.207.232 – 10.78.207.232	10.78.207.232
234	10.78.207.233/32	10.78.207.233 – 10.78.207.233	10.78.207.233
235	10.78.207.234/32	10.78.207.234 – 10.78.207.234	10.78.207.234
236	10.78.207.235/32	10.78.207.235 – 10.78.207.235	10.78.207.235
237	10.78.207.236/32	10.78.207.236 – 10.78.207.236	10.78.207.236
238	10.78.207.237/32	10.78.207.237 – 10.78.207.237	10.78.207.237
239	10.78.207.238/32	10.78.207.238 – 10.78.207.238	10.78.207.238
240	10.78.207.239/32	10.78.207.239 – 10.78.207.239	10.78.207.239
241	10.78.207.240/32	10.78.207.240 – 10.78.207.240	10.78.207.240
242	10.78.207.241/32	10.78.207.241 – 10.78.207.241	10.78.207.241
243	10.78.207.242/32	10.78.207.242 – 10.78.207.242	10.78.207.242
244	10.78.207.243/32	10.78.207.243 – 10.78.207.243	10.78.207.243
245	10.78.207.244/32	10.78.207.244 – 10.78.207.244	10.78.207.244
246	10.78.207.245/32	10.78.207.245 – 10.78.207.245	10.78.207.245
247	10.78.207.246/32	10.78.207.246 – 10.78.207.246	10.78.207.246
248	10.78.207.247/32	10.78.207.247 – 10.78.207.247	10.78.207.247
249	10.78.207.248/32	10.78.207.248 – 10.78.207.248	10.78.207.248
250	10.78.207.249/32	10.78.207.249 – 10.78.207.249	10.78.207.249
251	10.78.207.250/32	10.78.207.250 – 10.78.207.250	10.78.207.250
252	10.78.207.251/32	10.78.207.251 – 10.78.207.251	10.78.207.251
253	10.78.207.252/32	10.78.207.252 – 10.78.207.252	10.78.207.252
254	10.78.207.253/32	10.78.207.253 – 10.78.207.253	10.78.207.253
255	10.78.207.254/32	10.78.207.254 – 10.78.207.254	10.78.207.254
256	10.78.207.255/32	10.78.207.255 – 10.78.207.255	10.78.207.255

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 →