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)10.4.14.0/23

network10.4.14.0/23

broadcast10.4.15.255

first host10.4.14.1

last host10.4.15.254

subnet mask255.255.254.0

wildcard0.0.1.255

addresses512

usable hosts510

classA

ipcalc 10.4.14.0/23

address00001010.00000100.00001110.00000000

subnet mask11111111.11111111.11111110.00000000

network00001010.00000100.00001110.00000000

broadcast00001010.00000100.00001111.11111111

green = network part, grey = host part

hex0x0a040e00

decimal168037888

reverse dns0.14.4.10.in-addr.arpa

ipv4-mapped::ffff:a04:e00

/23 split into /32 · 512 subnets

close ×

#	network	host range	broadcast
1	10.4.14.0/32	10.4.14.0 – 10.4.14.0	10.4.14.0
2	10.4.14.1/32	10.4.14.1 – 10.4.14.1	10.4.14.1
3	10.4.14.2/32	10.4.14.2 – 10.4.14.2	10.4.14.2
4	10.4.14.3/32	10.4.14.3 – 10.4.14.3	10.4.14.3
5	10.4.14.4/32	10.4.14.4 – 10.4.14.4	10.4.14.4
6	10.4.14.5/32	10.4.14.5 – 10.4.14.5	10.4.14.5
7	10.4.14.6/32	10.4.14.6 – 10.4.14.6	10.4.14.6
8	10.4.14.7/32	10.4.14.7 – 10.4.14.7	10.4.14.7
9	10.4.14.8/32	10.4.14.8 – 10.4.14.8	10.4.14.8
10	10.4.14.9/32	10.4.14.9 – 10.4.14.9	10.4.14.9
11	10.4.14.10/32	10.4.14.10 – 10.4.14.10	10.4.14.10
12	10.4.14.11/32	10.4.14.11 – 10.4.14.11	10.4.14.11
13	10.4.14.12/32	10.4.14.12 – 10.4.14.12	10.4.14.12
14	10.4.14.13/32	10.4.14.13 – 10.4.14.13	10.4.14.13
15	10.4.14.14/32	10.4.14.14 – 10.4.14.14	10.4.14.14
16	10.4.14.15/32	10.4.14.15 – 10.4.14.15	10.4.14.15
17	10.4.14.16/32	10.4.14.16 – 10.4.14.16	10.4.14.16
18	10.4.14.17/32	10.4.14.17 – 10.4.14.17	10.4.14.17
19	10.4.14.18/32	10.4.14.18 – 10.4.14.18	10.4.14.18
20	10.4.14.19/32	10.4.14.19 – 10.4.14.19	10.4.14.19
21	10.4.14.20/32	10.4.14.20 – 10.4.14.20	10.4.14.20
22	10.4.14.21/32	10.4.14.21 – 10.4.14.21	10.4.14.21
23	10.4.14.22/32	10.4.14.22 – 10.4.14.22	10.4.14.22
24	10.4.14.23/32	10.4.14.23 – 10.4.14.23	10.4.14.23
25	10.4.14.24/32	10.4.14.24 – 10.4.14.24	10.4.14.24
26	10.4.14.25/32	10.4.14.25 – 10.4.14.25	10.4.14.25
27	10.4.14.26/32	10.4.14.26 – 10.4.14.26	10.4.14.26
28	10.4.14.27/32	10.4.14.27 – 10.4.14.27	10.4.14.27
29	10.4.14.28/32	10.4.14.28 – 10.4.14.28	10.4.14.28
30	10.4.14.29/32	10.4.14.29 – 10.4.14.29	10.4.14.29
31	10.4.14.30/32	10.4.14.30 – 10.4.14.30	10.4.14.30
32	10.4.14.31/32	10.4.14.31 – 10.4.14.31	10.4.14.31
33	10.4.14.32/32	10.4.14.32 – 10.4.14.32	10.4.14.32
34	10.4.14.33/32	10.4.14.33 – 10.4.14.33	10.4.14.33
35	10.4.14.34/32	10.4.14.34 – 10.4.14.34	10.4.14.34
36	10.4.14.35/32	10.4.14.35 – 10.4.14.35	10.4.14.35
37	10.4.14.36/32	10.4.14.36 – 10.4.14.36	10.4.14.36
38	10.4.14.37/32	10.4.14.37 – 10.4.14.37	10.4.14.37
39	10.4.14.38/32	10.4.14.38 – 10.4.14.38	10.4.14.38
40	10.4.14.39/32	10.4.14.39 – 10.4.14.39	10.4.14.39
41	10.4.14.40/32	10.4.14.40 – 10.4.14.40	10.4.14.40
42	10.4.14.41/32	10.4.14.41 – 10.4.14.41	10.4.14.41
43	10.4.14.42/32	10.4.14.42 – 10.4.14.42	10.4.14.42
44	10.4.14.43/32	10.4.14.43 – 10.4.14.43	10.4.14.43
45	10.4.14.44/32	10.4.14.44 – 10.4.14.44	10.4.14.44
46	10.4.14.45/32	10.4.14.45 – 10.4.14.45	10.4.14.45
47	10.4.14.46/32	10.4.14.46 – 10.4.14.46	10.4.14.46
48	10.4.14.47/32	10.4.14.47 – 10.4.14.47	10.4.14.47
49	10.4.14.48/32	10.4.14.48 – 10.4.14.48	10.4.14.48
50	10.4.14.49/32	10.4.14.49 – 10.4.14.49	10.4.14.49
51	10.4.14.50/32	10.4.14.50 – 10.4.14.50	10.4.14.50
52	10.4.14.51/32	10.4.14.51 – 10.4.14.51	10.4.14.51
53	10.4.14.52/32	10.4.14.52 – 10.4.14.52	10.4.14.52
54	10.4.14.53/32	10.4.14.53 – 10.4.14.53	10.4.14.53
55	10.4.14.54/32	10.4.14.54 – 10.4.14.54	10.4.14.54
56	10.4.14.55/32	10.4.14.55 – 10.4.14.55	10.4.14.55
57	10.4.14.56/32	10.4.14.56 – 10.4.14.56	10.4.14.56
58	10.4.14.57/32	10.4.14.57 – 10.4.14.57	10.4.14.57
59	10.4.14.58/32	10.4.14.58 – 10.4.14.58	10.4.14.58
60	10.4.14.59/32	10.4.14.59 – 10.4.14.59	10.4.14.59
61	10.4.14.60/32	10.4.14.60 – 10.4.14.60	10.4.14.60
62	10.4.14.61/32	10.4.14.61 – 10.4.14.61	10.4.14.61
63	10.4.14.62/32	10.4.14.62 – 10.4.14.62	10.4.14.62
64	10.4.14.63/32	10.4.14.63 – 10.4.14.63	10.4.14.63
65	10.4.14.64/32	10.4.14.64 – 10.4.14.64	10.4.14.64
66	10.4.14.65/32	10.4.14.65 – 10.4.14.65	10.4.14.65
67	10.4.14.66/32	10.4.14.66 – 10.4.14.66	10.4.14.66
68	10.4.14.67/32	10.4.14.67 – 10.4.14.67	10.4.14.67
69	10.4.14.68/32	10.4.14.68 – 10.4.14.68	10.4.14.68
70	10.4.14.69/32	10.4.14.69 – 10.4.14.69	10.4.14.69
71	10.4.14.70/32	10.4.14.70 – 10.4.14.70	10.4.14.70
72	10.4.14.71/32	10.4.14.71 – 10.4.14.71	10.4.14.71
73	10.4.14.72/32	10.4.14.72 – 10.4.14.72	10.4.14.72
74	10.4.14.73/32	10.4.14.73 – 10.4.14.73	10.4.14.73
75	10.4.14.74/32	10.4.14.74 – 10.4.14.74	10.4.14.74
76	10.4.14.75/32	10.4.14.75 – 10.4.14.75	10.4.14.75
77	10.4.14.76/32	10.4.14.76 – 10.4.14.76	10.4.14.76
78	10.4.14.77/32	10.4.14.77 – 10.4.14.77	10.4.14.77
79	10.4.14.78/32	10.4.14.78 – 10.4.14.78	10.4.14.78
80	10.4.14.79/32	10.4.14.79 – 10.4.14.79	10.4.14.79
81	10.4.14.80/32	10.4.14.80 – 10.4.14.80	10.4.14.80
82	10.4.14.81/32	10.4.14.81 – 10.4.14.81	10.4.14.81
83	10.4.14.82/32	10.4.14.82 – 10.4.14.82	10.4.14.82
84	10.4.14.83/32	10.4.14.83 – 10.4.14.83	10.4.14.83
85	10.4.14.84/32	10.4.14.84 – 10.4.14.84	10.4.14.84
86	10.4.14.85/32	10.4.14.85 – 10.4.14.85	10.4.14.85
87	10.4.14.86/32	10.4.14.86 – 10.4.14.86	10.4.14.86
88	10.4.14.87/32	10.4.14.87 – 10.4.14.87	10.4.14.87
89	10.4.14.88/32	10.4.14.88 – 10.4.14.88	10.4.14.88
90	10.4.14.89/32	10.4.14.89 – 10.4.14.89	10.4.14.89
91	10.4.14.90/32	10.4.14.90 – 10.4.14.90	10.4.14.90
92	10.4.14.91/32	10.4.14.91 – 10.4.14.91	10.4.14.91
93	10.4.14.92/32	10.4.14.92 – 10.4.14.92	10.4.14.92
94	10.4.14.93/32	10.4.14.93 – 10.4.14.93	10.4.14.93
95	10.4.14.94/32	10.4.14.94 – 10.4.14.94	10.4.14.94
96	10.4.14.95/32	10.4.14.95 – 10.4.14.95	10.4.14.95
97	10.4.14.96/32	10.4.14.96 – 10.4.14.96	10.4.14.96
98	10.4.14.97/32	10.4.14.97 – 10.4.14.97	10.4.14.97
99	10.4.14.98/32	10.4.14.98 – 10.4.14.98	10.4.14.98
100	10.4.14.99/32	10.4.14.99 – 10.4.14.99	10.4.14.99
101	10.4.14.100/32	10.4.14.100 – 10.4.14.100	10.4.14.100
102	10.4.14.101/32	10.4.14.101 – 10.4.14.101	10.4.14.101
103	10.4.14.102/32	10.4.14.102 – 10.4.14.102	10.4.14.102
104	10.4.14.103/32	10.4.14.103 – 10.4.14.103	10.4.14.103
105	10.4.14.104/32	10.4.14.104 – 10.4.14.104	10.4.14.104
106	10.4.14.105/32	10.4.14.105 – 10.4.14.105	10.4.14.105
107	10.4.14.106/32	10.4.14.106 – 10.4.14.106	10.4.14.106
108	10.4.14.107/32	10.4.14.107 – 10.4.14.107	10.4.14.107
109	10.4.14.108/32	10.4.14.108 – 10.4.14.108	10.4.14.108
110	10.4.14.109/32	10.4.14.109 – 10.4.14.109	10.4.14.109
111	10.4.14.110/32	10.4.14.110 – 10.4.14.110	10.4.14.110
112	10.4.14.111/32	10.4.14.111 – 10.4.14.111	10.4.14.111
113	10.4.14.112/32	10.4.14.112 – 10.4.14.112	10.4.14.112
114	10.4.14.113/32	10.4.14.113 – 10.4.14.113	10.4.14.113
115	10.4.14.114/32	10.4.14.114 – 10.4.14.114	10.4.14.114
116	10.4.14.115/32	10.4.14.115 – 10.4.14.115	10.4.14.115
117	10.4.14.116/32	10.4.14.116 – 10.4.14.116	10.4.14.116
118	10.4.14.117/32	10.4.14.117 – 10.4.14.117	10.4.14.117
119	10.4.14.118/32	10.4.14.118 – 10.4.14.118	10.4.14.118
120	10.4.14.119/32	10.4.14.119 – 10.4.14.119	10.4.14.119
121	10.4.14.120/32	10.4.14.120 – 10.4.14.120	10.4.14.120
122	10.4.14.121/32	10.4.14.121 – 10.4.14.121	10.4.14.121
123	10.4.14.122/32	10.4.14.122 – 10.4.14.122	10.4.14.122
124	10.4.14.123/32	10.4.14.123 – 10.4.14.123	10.4.14.123
125	10.4.14.124/32	10.4.14.124 – 10.4.14.124	10.4.14.124
126	10.4.14.125/32	10.4.14.125 – 10.4.14.125	10.4.14.125
127	10.4.14.126/32	10.4.14.126 – 10.4.14.126	10.4.14.126
128	10.4.14.127/32	10.4.14.127 – 10.4.14.127	10.4.14.127
129	10.4.14.128/32	10.4.14.128 – 10.4.14.128	10.4.14.128
130	10.4.14.129/32	10.4.14.129 – 10.4.14.129	10.4.14.129
131	10.4.14.130/32	10.4.14.130 – 10.4.14.130	10.4.14.130
132	10.4.14.131/32	10.4.14.131 – 10.4.14.131	10.4.14.131
133	10.4.14.132/32	10.4.14.132 – 10.4.14.132	10.4.14.132
134	10.4.14.133/32	10.4.14.133 – 10.4.14.133	10.4.14.133
135	10.4.14.134/32	10.4.14.134 – 10.4.14.134	10.4.14.134
136	10.4.14.135/32	10.4.14.135 – 10.4.14.135	10.4.14.135
137	10.4.14.136/32	10.4.14.136 – 10.4.14.136	10.4.14.136
138	10.4.14.137/32	10.4.14.137 – 10.4.14.137	10.4.14.137
139	10.4.14.138/32	10.4.14.138 – 10.4.14.138	10.4.14.138
140	10.4.14.139/32	10.4.14.139 – 10.4.14.139	10.4.14.139
141	10.4.14.140/32	10.4.14.140 – 10.4.14.140	10.4.14.140
142	10.4.14.141/32	10.4.14.141 – 10.4.14.141	10.4.14.141
143	10.4.14.142/32	10.4.14.142 – 10.4.14.142	10.4.14.142
144	10.4.14.143/32	10.4.14.143 – 10.4.14.143	10.4.14.143
145	10.4.14.144/32	10.4.14.144 – 10.4.14.144	10.4.14.144
146	10.4.14.145/32	10.4.14.145 – 10.4.14.145	10.4.14.145
147	10.4.14.146/32	10.4.14.146 – 10.4.14.146	10.4.14.146
148	10.4.14.147/32	10.4.14.147 – 10.4.14.147	10.4.14.147
149	10.4.14.148/32	10.4.14.148 – 10.4.14.148	10.4.14.148
150	10.4.14.149/32	10.4.14.149 – 10.4.14.149	10.4.14.149
151	10.4.14.150/32	10.4.14.150 – 10.4.14.150	10.4.14.150
152	10.4.14.151/32	10.4.14.151 – 10.4.14.151	10.4.14.151
153	10.4.14.152/32	10.4.14.152 – 10.4.14.152	10.4.14.152
154	10.4.14.153/32	10.4.14.153 – 10.4.14.153	10.4.14.153
155	10.4.14.154/32	10.4.14.154 – 10.4.14.154	10.4.14.154
156	10.4.14.155/32	10.4.14.155 – 10.4.14.155	10.4.14.155
157	10.4.14.156/32	10.4.14.156 – 10.4.14.156	10.4.14.156
158	10.4.14.157/32	10.4.14.157 – 10.4.14.157	10.4.14.157
159	10.4.14.158/32	10.4.14.158 – 10.4.14.158	10.4.14.158
160	10.4.14.159/32	10.4.14.159 – 10.4.14.159	10.4.14.159
161	10.4.14.160/32	10.4.14.160 – 10.4.14.160	10.4.14.160
162	10.4.14.161/32	10.4.14.161 – 10.4.14.161	10.4.14.161
163	10.4.14.162/32	10.4.14.162 – 10.4.14.162	10.4.14.162
164	10.4.14.163/32	10.4.14.163 – 10.4.14.163	10.4.14.163
165	10.4.14.164/32	10.4.14.164 – 10.4.14.164	10.4.14.164
166	10.4.14.165/32	10.4.14.165 – 10.4.14.165	10.4.14.165
167	10.4.14.166/32	10.4.14.166 – 10.4.14.166	10.4.14.166
168	10.4.14.167/32	10.4.14.167 – 10.4.14.167	10.4.14.167
169	10.4.14.168/32	10.4.14.168 – 10.4.14.168	10.4.14.168
170	10.4.14.169/32	10.4.14.169 – 10.4.14.169	10.4.14.169
171	10.4.14.170/32	10.4.14.170 – 10.4.14.170	10.4.14.170
172	10.4.14.171/32	10.4.14.171 – 10.4.14.171	10.4.14.171
173	10.4.14.172/32	10.4.14.172 – 10.4.14.172	10.4.14.172
174	10.4.14.173/32	10.4.14.173 – 10.4.14.173	10.4.14.173
175	10.4.14.174/32	10.4.14.174 – 10.4.14.174	10.4.14.174
176	10.4.14.175/32	10.4.14.175 – 10.4.14.175	10.4.14.175
177	10.4.14.176/32	10.4.14.176 – 10.4.14.176	10.4.14.176
178	10.4.14.177/32	10.4.14.177 – 10.4.14.177	10.4.14.177
179	10.4.14.178/32	10.4.14.178 – 10.4.14.178	10.4.14.178
180	10.4.14.179/32	10.4.14.179 – 10.4.14.179	10.4.14.179
181	10.4.14.180/32	10.4.14.180 – 10.4.14.180	10.4.14.180
182	10.4.14.181/32	10.4.14.181 – 10.4.14.181	10.4.14.181
183	10.4.14.182/32	10.4.14.182 – 10.4.14.182	10.4.14.182
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189	10.4.14.188/32	10.4.14.188 – 10.4.14.188	10.4.14.188
190	10.4.14.189/32	10.4.14.189 – 10.4.14.189	10.4.14.189
191	10.4.14.190/32	10.4.14.190 – 10.4.14.190	10.4.14.190
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198	10.4.14.197/32	10.4.14.197 – 10.4.14.197	10.4.14.197
199	10.4.14.198/32	10.4.14.198 – 10.4.14.198	10.4.14.198
200	10.4.14.199/32	10.4.14.199 – 10.4.14.199	10.4.14.199
201	10.4.14.200/32	10.4.14.200 – 10.4.14.200	10.4.14.200
202	10.4.14.201/32	10.4.14.201 – 10.4.14.201	10.4.14.201
203	10.4.14.202/32	10.4.14.202 – 10.4.14.202	10.4.14.202
204	10.4.14.203/32	10.4.14.203 – 10.4.14.203	10.4.14.203
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207	10.4.14.206/32	10.4.14.206 – 10.4.14.206	10.4.14.206
208	10.4.14.207/32	10.4.14.207 – 10.4.14.207	10.4.14.207
209	10.4.14.208/32	10.4.14.208 – 10.4.14.208	10.4.14.208
210	10.4.14.209/32	10.4.14.209 – 10.4.14.209	10.4.14.209
211	10.4.14.210/32	10.4.14.210 – 10.4.14.210	10.4.14.210
212	10.4.14.211/32	10.4.14.211 – 10.4.14.211	10.4.14.211
213	10.4.14.212/32	10.4.14.212 – 10.4.14.212	10.4.14.212
214	10.4.14.213/32	10.4.14.213 – 10.4.14.213	10.4.14.213
215	10.4.14.214/32	10.4.14.214 – 10.4.14.214	10.4.14.214
216	10.4.14.215/32	10.4.14.215 – 10.4.14.215	10.4.14.215
217	10.4.14.216/32	10.4.14.216 – 10.4.14.216	10.4.14.216
218	10.4.14.217/32	10.4.14.217 – 10.4.14.217	10.4.14.217
219	10.4.14.218/32	10.4.14.218 – 10.4.14.218	10.4.14.218
220	10.4.14.219/32	10.4.14.219 – 10.4.14.219	10.4.14.219
221	10.4.14.220/32	10.4.14.220 – 10.4.14.220	10.4.14.220
222	10.4.14.221/32	10.4.14.221 – 10.4.14.221	10.4.14.221
223	10.4.14.222/32	10.4.14.222 – 10.4.14.222	10.4.14.222
224	10.4.14.223/32	10.4.14.223 – 10.4.14.223	10.4.14.223
225	10.4.14.224/32	10.4.14.224 – 10.4.14.224	10.4.14.224
226	10.4.14.225/32	10.4.14.225 – 10.4.14.225	10.4.14.225
227	10.4.14.226/32	10.4.14.226 – 10.4.14.226	10.4.14.226
228	10.4.14.227/32	10.4.14.227 – 10.4.14.227	10.4.14.227
229	10.4.14.228/32	10.4.14.228 – 10.4.14.228	10.4.14.228
230	10.4.14.229/32	10.4.14.229 – 10.4.14.229	10.4.14.229
231	10.4.14.230/32	10.4.14.230 – 10.4.14.230	10.4.14.230
232	10.4.14.231/32	10.4.14.231 – 10.4.14.231	10.4.14.231
233	10.4.14.232/32	10.4.14.232 – 10.4.14.232	10.4.14.232
234	10.4.14.233/32	10.4.14.233 – 10.4.14.233	10.4.14.233
235	10.4.14.234/32	10.4.14.234 – 10.4.14.234	10.4.14.234
236	10.4.14.235/32	10.4.14.235 – 10.4.14.235	10.4.14.235
237	10.4.14.236/32	10.4.14.236 – 10.4.14.236	10.4.14.236
238	10.4.14.237/32	10.4.14.237 – 10.4.14.237	10.4.14.237
239	10.4.14.238/32	10.4.14.238 – 10.4.14.238	10.4.14.238
240	10.4.14.239/32	10.4.14.239 – 10.4.14.239	10.4.14.239
241	10.4.14.240/32	10.4.14.240 – 10.4.14.240	10.4.14.240
242	10.4.14.241/32	10.4.14.241 – 10.4.14.241	10.4.14.241
243	10.4.14.242/32	10.4.14.242 – 10.4.14.242	10.4.14.242
244	10.4.14.243/32	10.4.14.243 – 10.4.14.243	10.4.14.243
245	10.4.14.244/32	10.4.14.244 – 10.4.14.244	10.4.14.244
246	10.4.14.245/32	10.4.14.245 – 10.4.14.245	10.4.14.245
247	10.4.14.246/32	10.4.14.246 – 10.4.14.246	10.4.14.246
248	10.4.14.247/32	10.4.14.247 – 10.4.14.247	10.4.14.247
249	10.4.14.248/32	10.4.14.248 – 10.4.14.248	10.4.14.248
250	10.4.14.249/32	10.4.14.249 – 10.4.14.249	10.4.14.249
251	10.4.14.250/32	10.4.14.250 – 10.4.14.250	10.4.14.250
252	10.4.14.251/32	10.4.14.251 – 10.4.14.251	10.4.14.251
253	10.4.14.252/32	10.4.14.252 – 10.4.14.252	10.4.14.252
254	10.4.14.253/32	10.4.14.253 – 10.4.14.253	10.4.14.253
255	10.4.14.254/32	10.4.14.254 – 10.4.14.254	10.4.14.254
256	10.4.14.255/32	10.4.14.255 – 10.4.14.255	10.4.14.255

showing 256 of 512

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 /23
/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	1
/24	255.255.255.0	256	254	2 split →
/25	255.255.255.128	128	126	4 split →
/26	255.255.255.192	64	62	8 split →
/27	255.255.255.224	32	30	16 split →
/28	255.255.255.240	16	14	32 split →
/29	255.255.255.248	8	6	64 split →
/30	255.255.255.252	4	2	128 split →
/31	255.255.255.254	2	2	256 split →
/32	255.255.255.255	1	1	512 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 →