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)10.78.218.0/24

network10.78.218.0/24

broadcast10.78.218.255

first host10.78.218.1

last host10.78.218.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.78.218.0/24

address00001010.01001110.11011010.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.01001110.11011010.00000000

broadcast00001010.01001110.11011010.11111111

green = network part, grey = host part

hex0x0a4eda00

decimal172939776

reverse dns0.218.78.10.in-addr.arpa

ipv4-mapped::ffff:a4e:da00

/24 split into /32 · 256 subnets

close ×

#	network	host range	broadcast
1	10.78.218.0/32	10.78.218.0 – 10.78.218.0	10.78.218.0
2	10.78.218.1/32	10.78.218.1 – 10.78.218.1	10.78.218.1
3	10.78.218.2/32	10.78.218.2 – 10.78.218.2	10.78.218.2
4	10.78.218.3/32	10.78.218.3 – 10.78.218.3	10.78.218.3
5	10.78.218.4/32	10.78.218.4 – 10.78.218.4	10.78.218.4
6	10.78.218.5/32	10.78.218.5 – 10.78.218.5	10.78.218.5
7	10.78.218.6/32	10.78.218.6 – 10.78.218.6	10.78.218.6
8	10.78.218.7/32	10.78.218.7 – 10.78.218.7	10.78.218.7
9	10.78.218.8/32	10.78.218.8 – 10.78.218.8	10.78.218.8
10	10.78.218.9/32	10.78.218.9 – 10.78.218.9	10.78.218.9
11	10.78.218.10/32	10.78.218.10 – 10.78.218.10	10.78.218.10
12	10.78.218.11/32	10.78.218.11 – 10.78.218.11	10.78.218.11
13	10.78.218.12/32	10.78.218.12 – 10.78.218.12	10.78.218.12
14	10.78.218.13/32	10.78.218.13 – 10.78.218.13	10.78.218.13
15	10.78.218.14/32	10.78.218.14 – 10.78.218.14	10.78.218.14
16	10.78.218.15/32	10.78.218.15 – 10.78.218.15	10.78.218.15
17	10.78.218.16/32	10.78.218.16 – 10.78.218.16	10.78.218.16
18	10.78.218.17/32	10.78.218.17 – 10.78.218.17	10.78.218.17
19	10.78.218.18/32	10.78.218.18 – 10.78.218.18	10.78.218.18
20	10.78.218.19/32	10.78.218.19 – 10.78.218.19	10.78.218.19
21	10.78.218.20/32	10.78.218.20 – 10.78.218.20	10.78.218.20
22	10.78.218.21/32	10.78.218.21 – 10.78.218.21	10.78.218.21
23	10.78.218.22/32	10.78.218.22 – 10.78.218.22	10.78.218.22
24	10.78.218.23/32	10.78.218.23 – 10.78.218.23	10.78.218.23
25	10.78.218.24/32	10.78.218.24 – 10.78.218.24	10.78.218.24
26	10.78.218.25/32	10.78.218.25 – 10.78.218.25	10.78.218.25
27	10.78.218.26/32	10.78.218.26 – 10.78.218.26	10.78.218.26
28	10.78.218.27/32	10.78.218.27 – 10.78.218.27	10.78.218.27
29	10.78.218.28/32	10.78.218.28 – 10.78.218.28	10.78.218.28
30	10.78.218.29/32	10.78.218.29 – 10.78.218.29	10.78.218.29
31	10.78.218.30/32	10.78.218.30 – 10.78.218.30	10.78.218.30
32	10.78.218.31/32	10.78.218.31 – 10.78.218.31	10.78.218.31
33	10.78.218.32/32	10.78.218.32 – 10.78.218.32	10.78.218.32
34	10.78.218.33/32	10.78.218.33 – 10.78.218.33	10.78.218.33
35	10.78.218.34/32	10.78.218.34 – 10.78.218.34	10.78.218.34
36	10.78.218.35/32	10.78.218.35 – 10.78.218.35	10.78.218.35
37	10.78.218.36/32	10.78.218.36 – 10.78.218.36	10.78.218.36
38	10.78.218.37/32	10.78.218.37 – 10.78.218.37	10.78.218.37
39	10.78.218.38/32	10.78.218.38 – 10.78.218.38	10.78.218.38
40	10.78.218.39/32	10.78.218.39 – 10.78.218.39	10.78.218.39
41	10.78.218.40/32	10.78.218.40 – 10.78.218.40	10.78.218.40
42	10.78.218.41/32	10.78.218.41 – 10.78.218.41	10.78.218.41
43	10.78.218.42/32	10.78.218.42 – 10.78.218.42	10.78.218.42
44	10.78.218.43/32	10.78.218.43 – 10.78.218.43	10.78.218.43
45	10.78.218.44/32	10.78.218.44 – 10.78.218.44	10.78.218.44
46	10.78.218.45/32	10.78.218.45 – 10.78.218.45	10.78.218.45
47	10.78.218.46/32	10.78.218.46 – 10.78.218.46	10.78.218.46
48	10.78.218.47/32	10.78.218.47 – 10.78.218.47	10.78.218.47
49	10.78.218.48/32	10.78.218.48 – 10.78.218.48	10.78.218.48
50	10.78.218.49/32	10.78.218.49 – 10.78.218.49	10.78.218.49
51	10.78.218.50/32	10.78.218.50 – 10.78.218.50	10.78.218.50
52	10.78.218.51/32	10.78.218.51 – 10.78.218.51	10.78.218.51
53	10.78.218.52/32	10.78.218.52 – 10.78.218.52	10.78.218.52
54	10.78.218.53/32	10.78.218.53 – 10.78.218.53	10.78.218.53
55	10.78.218.54/32	10.78.218.54 – 10.78.218.54	10.78.218.54
56	10.78.218.55/32	10.78.218.55 – 10.78.218.55	10.78.218.55
57	10.78.218.56/32	10.78.218.56 – 10.78.218.56	10.78.218.56
58	10.78.218.57/32	10.78.218.57 – 10.78.218.57	10.78.218.57
59	10.78.218.58/32	10.78.218.58 – 10.78.218.58	10.78.218.58
60	10.78.218.59/32	10.78.218.59 – 10.78.218.59	10.78.218.59
61	10.78.218.60/32	10.78.218.60 – 10.78.218.60	10.78.218.60
62	10.78.218.61/32	10.78.218.61 – 10.78.218.61	10.78.218.61
63	10.78.218.62/32	10.78.218.62 – 10.78.218.62	10.78.218.62
64	10.78.218.63/32	10.78.218.63 – 10.78.218.63	10.78.218.63
65	10.78.218.64/32	10.78.218.64 – 10.78.218.64	10.78.218.64
66	10.78.218.65/32	10.78.218.65 – 10.78.218.65	10.78.218.65
67	10.78.218.66/32	10.78.218.66 – 10.78.218.66	10.78.218.66
68	10.78.218.67/32	10.78.218.67 – 10.78.218.67	10.78.218.67
69	10.78.218.68/32	10.78.218.68 – 10.78.218.68	10.78.218.68
70	10.78.218.69/32	10.78.218.69 – 10.78.218.69	10.78.218.69
71	10.78.218.70/32	10.78.218.70 – 10.78.218.70	10.78.218.70
72	10.78.218.71/32	10.78.218.71 – 10.78.218.71	10.78.218.71
73	10.78.218.72/32	10.78.218.72 – 10.78.218.72	10.78.218.72
74	10.78.218.73/32	10.78.218.73 – 10.78.218.73	10.78.218.73
75	10.78.218.74/32	10.78.218.74 – 10.78.218.74	10.78.218.74
76	10.78.218.75/32	10.78.218.75 – 10.78.218.75	10.78.218.75
77	10.78.218.76/32	10.78.218.76 – 10.78.218.76	10.78.218.76
78	10.78.218.77/32	10.78.218.77 – 10.78.218.77	10.78.218.77
79	10.78.218.78/32	10.78.218.78 – 10.78.218.78	10.78.218.78
80	10.78.218.79/32	10.78.218.79 – 10.78.218.79	10.78.218.79
81	10.78.218.80/32	10.78.218.80 – 10.78.218.80	10.78.218.80
82	10.78.218.81/32	10.78.218.81 – 10.78.218.81	10.78.218.81
83	10.78.218.82/32	10.78.218.82 – 10.78.218.82	10.78.218.82
84	10.78.218.83/32	10.78.218.83 – 10.78.218.83	10.78.218.83
85	10.78.218.84/32	10.78.218.84 – 10.78.218.84	10.78.218.84
86	10.78.218.85/32	10.78.218.85 – 10.78.218.85	10.78.218.85
87	10.78.218.86/32	10.78.218.86 – 10.78.218.86	10.78.218.86
88	10.78.218.87/32	10.78.218.87 – 10.78.218.87	10.78.218.87
89	10.78.218.88/32	10.78.218.88 – 10.78.218.88	10.78.218.88
90	10.78.218.89/32	10.78.218.89 – 10.78.218.89	10.78.218.89
91	10.78.218.90/32	10.78.218.90 – 10.78.218.90	10.78.218.90
92	10.78.218.91/32	10.78.218.91 – 10.78.218.91	10.78.218.91
93	10.78.218.92/32	10.78.218.92 – 10.78.218.92	10.78.218.92
94	10.78.218.93/32	10.78.218.93 – 10.78.218.93	10.78.218.93
95	10.78.218.94/32	10.78.218.94 – 10.78.218.94	10.78.218.94
96	10.78.218.95/32	10.78.218.95 – 10.78.218.95	10.78.218.95
97	10.78.218.96/32	10.78.218.96 – 10.78.218.96	10.78.218.96
98	10.78.218.97/32	10.78.218.97 – 10.78.218.97	10.78.218.97
99	10.78.218.98/32	10.78.218.98 – 10.78.218.98	10.78.218.98
100	10.78.218.99/32	10.78.218.99 – 10.78.218.99	10.78.218.99
101	10.78.218.100/32	10.78.218.100 – 10.78.218.100	10.78.218.100
102	10.78.218.101/32	10.78.218.101 – 10.78.218.101	10.78.218.101
103	10.78.218.102/32	10.78.218.102 – 10.78.218.102	10.78.218.102
104	10.78.218.103/32	10.78.218.103 – 10.78.218.103	10.78.218.103
105	10.78.218.104/32	10.78.218.104 – 10.78.218.104	10.78.218.104
106	10.78.218.105/32	10.78.218.105 – 10.78.218.105	10.78.218.105
107	10.78.218.106/32	10.78.218.106 – 10.78.218.106	10.78.218.106
108	10.78.218.107/32	10.78.218.107 – 10.78.218.107	10.78.218.107
109	10.78.218.108/32	10.78.218.108 – 10.78.218.108	10.78.218.108
110	10.78.218.109/32	10.78.218.109 – 10.78.218.109	10.78.218.109
111	10.78.218.110/32	10.78.218.110 – 10.78.218.110	10.78.218.110
112	10.78.218.111/32	10.78.218.111 – 10.78.218.111	10.78.218.111
113	10.78.218.112/32	10.78.218.112 – 10.78.218.112	10.78.218.112
114	10.78.218.113/32	10.78.218.113 – 10.78.218.113	10.78.218.113
115	10.78.218.114/32	10.78.218.114 – 10.78.218.114	10.78.218.114
116	10.78.218.115/32	10.78.218.115 – 10.78.218.115	10.78.218.115
117	10.78.218.116/32	10.78.218.116 – 10.78.218.116	10.78.218.116
118	10.78.218.117/32	10.78.218.117 – 10.78.218.117	10.78.218.117
119	10.78.218.118/32	10.78.218.118 – 10.78.218.118	10.78.218.118
120	10.78.218.119/32	10.78.218.119 – 10.78.218.119	10.78.218.119
121	10.78.218.120/32	10.78.218.120 – 10.78.218.120	10.78.218.120
122	10.78.218.121/32	10.78.218.121 – 10.78.218.121	10.78.218.121
123	10.78.218.122/32	10.78.218.122 – 10.78.218.122	10.78.218.122
124	10.78.218.123/32	10.78.218.123 – 10.78.218.123	10.78.218.123
125	10.78.218.124/32	10.78.218.124 – 10.78.218.124	10.78.218.124
126	10.78.218.125/32	10.78.218.125 – 10.78.218.125	10.78.218.125
127	10.78.218.126/32	10.78.218.126 – 10.78.218.126	10.78.218.126
128	10.78.218.127/32	10.78.218.127 – 10.78.218.127	10.78.218.127
129	10.78.218.128/32	10.78.218.128 – 10.78.218.128	10.78.218.128
130	10.78.218.129/32	10.78.218.129 – 10.78.218.129	10.78.218.129
131	10.78.218.130/32	10.78.218.130 – 10.78.218.130	10.78.218.130
132	10.78.218.131/32	10.78.218.131 – 10.78.218.131	10.78.218.131
133	10.78.218.132/32	10.78.218.132 – 10.78.218.132	10.78.218.132
134	10.78.218.133/32	10.78.218.133 – 10.78.218.133	10.78.218.133
135	10.78.218.134/32	10.78.218.134 – 10.78.218.134	10.78.218.134
136	10.78.218.135/32	10.78.218.135 – 10.78.218.135	10.78.218.135
137	10.78.218.136/32	10.78.218.136 – 10.78.218.136	10.78.218.136
138	10.78.218.137/32	10.78.218.137 – 10.78.218.137	10.78.218.137
139	10.78.218.138/32	10.78.218.138 – 10.78.218.138	10.78.218.138
140	10.78.218.139/32	10.78.218.139 – 10.78.218.139	10.78.218.139
141	10.78.218.140/32	10.78.218.140 – 10.78.218.140	10.78.218.140
142	10.78.218.141/32	10.78.218.141 – 10.78.218.141	10.78.218.141
143	10.78.218.142/32	10.78.218.142 – 10.78.218.142	10.78.218.142
144	10.78.218.143/32	10.78.218.143 – 10.78.218.143	10.78.218.143
145	10.78.218.144/32	10.78.218.144 – 10.78.218.144	10.78.218.144
146	10.78.218.145/32	10.78.218.145 – 10.78.218.145	10.78.218.145
147	10.78.218.146/32	10.78.218.146 – 10.78.218.146	10.78.218.146
148	10.78.218.147/32	10.78.218.147 – 10.78.218.147	10.78.218.147
149	10.78.218.148/32	10.78.218.148 – 10.78.218.148	10.78.218.148
150	10.78.218.149/32	10.78.218.149 – 10.78.218.149	10.78.218.149
151	10.78.218.150/32	10.78.218.150 – 10.78.218.150	10.78.218.150
152	10.78.218.151/32	10.78.218.151 – 10.78.218.151	10.78.218.151
153	10.78.218.152/32	10.78.218.152 – 10.78.218.152	10.78.218.152
154	10.78.218.153/32	10.78.218.153 – 10.78.218.153	10.78.218.153
155	10.78.218.154/32	10.78.218.154 – 10.78.218.154	10.78.218.154
156	10.78.218.155/32	10.78.218.155 – 10.78.218.155	10.78.218.155
157	10.78.218.156/32	10.78.218.156 – 10.78.218.156	10.78.218.156
158	10.78.218.157/32	10.78.218.157 – 10.78.218.157	10.78.218.157
159	10.78.218.158/32	10.78.218.158 – 10.78.218.158	10.78.218.158
160	10.78.218.159/32	10.78.218.159 – 10.78.218.159	10.78.218.159
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210	10.78.218.209/32	10.78.218.209 – 10.78.218.209	10.78.218.209
211	10.78.218.210/32	10.78.218.210 – 10.78.218.210	10.78.218.210
212	10.78.218.211/32	10.78.218.211 – 10.78.218.211	10.78.218.211
213	10.78.218.212/32	10.78.218.212 – 10.78.218.212	10.78.218.212
214	10.78.218.213/32	10.78.218.213 – 10.78.218.213	10.78.218.213
215	10.78.218.214/32	10.78.218.214 – 10.78.218.214	10.78.218.214
216	10.78.218.215/32	10.78.218.215 – 10.78.218.215	10.78.218.215
217	10.78.218.216/32	10.78.218.216 – 10.78.218.216	10.78.218.216
218	10.78.218.217/32	10.78.218.217 – 10.78.218.217	10.78.218.217
219	10.78.218.218/32	10.78.218.218 – 10.78.218.218	10.78.218.218
220	10.78.218.219/32	10.78.218.219 – 10.78.218.219	10.78.218.219
221	10.78.218.220/32	10.78.218.220 – 10.78.218.220	10.78.218.220
222	10.78.218.221/32	10.78.218.221 – 10.78.218.221	10.78.218.221
223	10.78.218.222/32	10.78.218.222 – 10.78.218.222	10.78.218.222
224	10.78.218.223/32	10.78.218.223 – 10.78.218.223	10.78.218.223
225	10.78.218.224/32	10.78.218.224 – 10.78.218.224	10.78.218.224
226	10.78.218.225/32	10.78.218.225 – 10.78.218.225	10.78.218.225
227	10.78.218.226/32	10.78.218.226 – 10.78.218.226	10.78.218.226
228	10.78.218.227/32	10.78.218.227 – 10.78.218.227	10.78.218.227
229	10.78.218.228/32	10.78.218.228 – 10.78.218.228	10.78.218.228
230	10.78.218.229/32	10.78.218.229 – 10.78.218.229	10.78.218.229
231	10.78.218.230/32	10.78.218.230 – 10.78.218.230	10.78.218.230
232	10.78.218.231/32	10.78.218.231 – 10.78.218.231	10.78.218.231
233	10.78.218.232/32	10.78.218.232 – 10.78.218.232	10.78.218.232
234	10.78.218.233/32	10.78.218.233 – 10.78.218.233	10.78.218.233
235	10.78.218.234/32	10.78.218.234 – 10.78.218.234	10.78.218.234
236	10.78.218.235/32	10.78.218.235 – 10.78.218.235	10.78.218.235
237	10.78.218.236/32	10.78.218.236 – 10.78.218.236	10.78.218.236
238	10.78.218.237/32	10.78.218.237 – 10.78.218.237	10.78.218.237
239	10.78.218.238/32	10.78.218.238 – 10.78.218.238	10.78.218.238
240	10.78.218.239/32	10.78.218.239 – 10.78.218.239	10.78.218.239
241	10.78.218.240/32	10.78.218.240 – 10.78.218.240	10.78.218.240
242	10.78.218.241/32	10.78.218.241 – 10.78.218.241	10.78.218.241
243	10.78.218.242/32	10.78.218.242 – 10.78.218.242	10.78.218.242
244	10.78.218.243/32	10.78.218.243 – 10.78.218.243	10.78.218.243
245	10.78.218.244/32	10.78.218.244 – 10.78.218.244	10.78.218.244
246	10.78.218.245/32	10.78.218.245 – 10.78.218.245	10.78.218.245
247	10.78.218.246/32	10.78.218.246 – 10.78.218.246	10.78.218.246
248	10.78.218.247/32	10.78.218.247 – 10.78.218.247	10.78.218.247
249	10.78.218.248/32	10.78.218.248 – 10.78.218.248	10.78.218.248
250	10.78.218.249/32	10.78.218.249 – 10.78.218.249	10.78.218.249
251	10.78.218.250/32	10.78.218.250 – 10.78.218.250	10.78.218.250
252	10.78.218.251/32	10.78.218.251 – 10.78.218.251	10.78.218.251
253	10.78.218.252/32	10.78.218.252 – 10.78.218.252	10.78.218.252
254	10.78.218.253/32	10.78.218.253 – 10.78.218.253	10.78.218.253
255	10.78.218.254/32	10.78.218.254 – 10.78.218.254	10.78.218.254
256	10.78.218.255/32	10.78.218.255 – 10.78.218.255	10.78.218.255

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 →