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)10.0.95.0/24

network10.0.95.0/24

broadcast10.0.95.255

first host10.0.95.1

last host10.0.95.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.0.95.0/24

address00001010.00000000.01011111.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.00000000.01011111.00000000

broadcast00001010.00000000.01011111.11111111

green = network part, grey = host part

hex0x0a005f00

decimal167796480

reverse dns0.95.0.10.in-addr.arpa

ipv4-mapped::ffff:a00:5f00

/24 split into /32 · 256 subnets

close ×

#	network	host range	broadcast
1	10.0.95.0/32	10.0.95.0 – 10.0.95.0	10.0.95.0
2	10.0.95.1/32	10.0.95.1 – 10.0.95.1	10.0.95.1
3	10.0.95.2/32	10.0.95.2 – 10.0.95.2	10.0.95.2
4	10.0.95.3/32	10.0.95.3 – 10.0.95.3	10.0.95.3
5	10.0.95.4/32	10.0.95.4 – 10.0.95.4	10.0.95.4
6	10.0.95.5/32	10.0.95.5 – 10.0.95.5	10.0.95.5
7	10.0.95.6/32	10.0.95.6 – 10.0.95.6	10.0.95.6
8	10.0.95.7/32	10.0.95.7 – 10.0.95.7	10.0.95.7
9	10.0.95.8/32	10.0.95.8 – 10.0.95.8	10.0.95.8
10	10.0.95.9/32	10.0.95.9 – 10.0.95.9	10.0.95.9
11	10.0.95.10/32	10.0.95.10 – 10.0.95.10	10.0.95.10
12	10.0.95.11/32	10.0.95.11 – 10.0.95.11	10.0.95.11
13	10.0.95.12/32	10.0.95.12 – 10.0.95.12	10.0.95.12
14	10.0.95.13/32	10.0.95.13 – 10.0.95.13	10.0.95.13
15	10.0.95.14/32	10.0.95.14 – 10.0.95.14	10.0.95.14
16	10.0.95.15/32	10.0.95.15 – 10.0.95.15	10.0.95.15
17	10.0.95.16/32	10.0.95.16 – 10.0.95.16	10.0.95.16
18	10.0.95.17/32	10.0.95.17 – 10.0.95.17	10.0.95.17
19	10.0.95.18/32	10.0.95.18 – 10.0.95.18	10.0.95.18
20	10.0.95.19/32	10.0.95.19 – 10.0.95.19	10.0.95.19
21	10.0.95.20/32	10.0.95.20 – 10.0.95.20	10.0.95.20
22	10.0.95.21/32	10.0.95.21 – 10.0.95.21	10.0.95.21
23	10.0.95.22/32	10.0.95.22 – 10.0.95.22	10.0.95.22
24	10.0.95.23/32	10.0.95.23 – 10.0.95.23	10.0.95.23
25	10.0.95.24/32	10.0.95.24 – 10.0.95.24	10.0.95.24
26	10.0.95.25/32	10.0.95.25 – 10.0.95.25	10.0.95.25
27	10.0.95.26/32	10.0.95.26 – 10.0.95.26	10.0.95.26
28	10.0.95.27/32	10.0.95.27 – 10.0.95.27	10.0.95.27
29	10.0.95.28/32	10.0.95.28 – 10.0.95.28	10.0.95.28
30	10.0.95.29/32	10.0.95.29 – 10.0.95.29	10.0.95.29
31	10.0.95.30/32	10.0.95.30 – 10.0.95.30	10.0.95.30
32	10.0.95.31/32	10.0.95.31 – 10.0.95.31	10.0.95.31
33	10.0.95.32/32	10.0.95.32 – 10.0.95.32	10.0.95.32
34	10.0.95.33/32	10.0.95.33 – 10.0.95.33	10.0.95.33
35	10.0.95.34/32	10.0.95.34 – 10.0.95.34	10.0.95.34
36	10.0.95.35/32	10.0.95.35 – 10.0.95.35	10.0.95.35
37	10.0.95.36/32	10.0.95.36 – 10.0.95.36	10.0.95.36
38	10.0.95.37/32	10.0.95.37 – 10.0.95.37	10.0.95.37
39	10.0.95.38/32	10.0.95.38 – 10.0.95.38	10.0.95.38
40	10.0.95.39/32	10.0.95.39 – 10.0.95.39	10.0.95.39
41	10.0.95.40/32	10.0.95.40 – 10.0.95.40	10.0.95.40
42	10.0.95.41/32	10.0.95.41 – 10.0.95.41	10.0.95.41
43	10.0.95.42/32	10.0.95.42 – 10.0.95.42	10.0.95.42
44	10.0.95.43/32	10.0.95.43 – 10.0.95.43	10.0.95.43
45	10.0.95.44/32	10.0.95.44 – 10.0.95.44	10.0.95.44
46	10.0.95.45/32	10.0.95.45 – 10.0.95.45	10.0.95.45
47	10.0.95.46/32	10.0.95.46 – 10.0.95.46	10.0.95.46
48	10.0.95.47/32	10.0.95.47 – 10.0.95.47	10.0.95.47
49	10.0.95.48/32	10.0.95.48 – 10.0.95.48	10.0.95.48
50	10.0.95.49/32	10.0.95.49 – 10.0.95.49	10.0.95.49
51	10.0.95.50/32	10.0.95.50 – 10.0.95.50	10.0.95.50
52	10.0.95.51/32	10.0.95.51 – 10.0.95.51	10.0.95.51
53	10.0.95.52/32	10.0.95.52 – 10.0.95.52	10.0.95.52
54	10.0.95.53/32	10.0.95.53 – 10.0.95.53	10.0.95.53
55	10.0.95.54/32	10.0.95.54 – 10.0.95.54	10.0.95.54
56	10.0.95.55/32	10.0.95.55 – 10.0.95.55	10.0.95.55
57	10.0.95.56/32	10.0.95.56 – 10.0.95.56	10.0.95.56
58	10.0.95.57/32	10.0.95.57 – 10.0.95.57	10.0.95.57
59	10.0.95.58/32	10.0.95.58 – 10.0.95.58	10.0.95.58
60	10.0.95.59/32	10.0.95.59 – 10.0.95.59	10.0.95.59
61	10.0.95.60/32	10.0.95.60 – 10.0.95.60	10.0.95.60
62	10.0.95.61/32	10.0.95.61 – 10.0.95.61	10.0.95.61
63	10.0.95.62/32	10.0.95.62 – 10.0.95.62	10.0.95.62
64	10.0.95.63/32	10.0.95.63 – 10.0.95.63	10.0.95.63
65	10.0.95.64/32	10.0.95.64 – 10.0.95.64	10.0.95.64
66	10.0.95.65/32	10.0.95.65 – 10.0.95.65	10.0.95.65
67	10.0.95.66/32	10.0.95.66 – 10.0.95.66	10.0.95.66
68	10.0.95.67/32	10.0.95.67 – 10.0.95.67	10.0.95.67
69	10.0.95.68/32	10.0.95.68 – 10.0.95.68	10.0.95.68
70	10.0.95.69/32	10.0.95.69 – 10.0.95.69	10.0.95.69
71	10.0.95.70/32	10.0.95.70 – 10.0.95.70	10.0.95.70
72	10.0.95.71/32	10.0.95.71 – 10.0.95.71	10.0.95.71
73	10.0.95.72/32	10.0.95.72 – 10.0.95.72	10.0.95.72
74	10.0.95.73/32	10.0.95.73 – 10.0.95.73	10.0.95.73
75	10.0.95.74/32	10.0.95.74 – 10.0.95.74	10.0.95.74
76	10.0.95.75/32	10.0.95.75 – 10.0.95.75	10.0.95.75
77	10.0.95.76/32	10.0.95.76 – 10.0.95.76	10.0.95.76
78	10.0.95.77/32	10.0.95.77 – 10.0.95.77	10.0.95.77
79	10.0.95.78/32	10.0.95.78 – 10.0.95.78	10.0.95.78
80	10.0.95.79/32	10.0.95.79 – 10.0.95.79	10.0.95.79
81	10.0.95.80/32	10.0.95.80 – 10.0.95.80	10.0.95.80
82	10.0.95.81/32	10.0.95.81 – 10.0.95.81	10.0.95.81
83	10.0.95.82/32	10.0.95.82 – 10.0.95.82	10.0.95.82
84	10.0.95.83/32	10.0.95.83 – 10.0.95.83	10.0.95.83
85	10.0.95.84/32	10.0.95.84 – 10.0.95.84	10.0.95.84
86	10.0.95.85/32	10.0.95.85 – 10.0.95.85	10.0.95.85
87	10.0.95.86/32	10.0.95.86 – 10.0.95.86	10.0.95.86
88	10.0.95.87/32	10.0.95.87 – 10.0.95.87	10.0.95.87
89	10.0.95.88/32	10.0.95.88 – 10.0.95.88	10.0.95.88
90	10.0.95.89/32	10.0.95.89 – 10.0.95.89	10.0.95.89
91	10.0.95.90/32	10.0.95.90 – 10.0.95.90	10.0.95.90
92	10.0.95.91/32	10.0.95.91 – 10.0.95.91	10.0.95.91
93	10.0.95.92/32	10.0.95.92 – 10.0.95.92	10.0.95.92
94	10.0.95.93/32	10.0.95.93 – 10.0.95.93	10.0.95.93
95	10.0.95.94/32	10.0.95.94 – 10.0.95.94	10.0.95.94
96	10.0.95.95/32	10.0.95.95 – 10.0.95.95	10.0.95.95
97	10.0.95.96/32	10.0.95.96 – 10.0.95.96	10.0.95.96
98	10.0.95.97/32	10.0.95.97 – 10.0.95.97	10.0.95.97
99	10.0.95.98/32	10.0.95.98 – 10.0.95.98	10.0.95.98
100	10.0.95.99/32	10.0.95.99 – 10.0.95.99	10.0.95.99
101	10.0.95.100/32	10.0.95.100 – 10.0.95.100	10.0.95.100
102	10.0.95.101/32	10.0.95.101 – 10.0.95.101	10.0.95.101
103	10.0.95.102/32	10.0.95.102 – 10.0.95.102	10.0.95.102
104	10.0.95.103/32	10.0.95.103 – 10.0.95.103	10.0.95.103
105	10.0.95.104/32	10.0.95.104 – 10.0.95.104	10.0.95.104
106	10.0.95.105/32	10.0.95.105 – 10.0.95.105	10.0.95.105
107	10.0.95.106/32	10.0.95.106 – 10.0.95.106	10.0.95.106
108	10.0.95.107/32	10.0.95.107 – 10.0.95.107	10.0.95.107
109	10.0.95.108/32	10.0.95.108 – 10.0.95.108	10.0.95.108
110	10.0.95.109/32	10.0.95.109 – 10.0.95.109	10.0.95.109
111	10.0.95.110/32	10.0.95.110 – 10.0.95.110	10.0.95.110
112	10.0.95.111/32	10.0.95.111 – 10.0.95.111	10.0.95.111
113	10.0.95.112/32	10.0.95.112 – 10.0.95.112	10.0.95.112
114	10.0.95.113/32	10.0.95.113 – 10.0.95.113	10.0.95.113
115	10.0.95.114/32	10.0.95.114 – 10.0.95.114	10.0.95.114
116	10.0.95.115/32	10.0.95.115 – 10.0.95.115	10.0.95.115
117	10.0.95.116/32	10.0.95.116 – 10.0.95.116	10.0.95.116
118	10.0.95.117/32	10.0.95.117 – 10.0.95.117	10.0.95.117
119	10.0.95.118/32	10.0.95.118 – 10.0.95.118	10.0.95.118
120	10.0.95.119/32	10.0.95.119 – 10.0.95.119	10.0.95.119
121	10.0.95.120/32	10.0.95.120 – 10.0.95.120	10.0.95.120
122	10.0.95.121/32	10.0.95.121 – 10.0.95.121	10.0.95.121
123	10.0.95.122/32	10.0.95.122 – 10.0.95.122	10.0.95.122
124	10.0.95.123/32	10.0.95.123 – 10.0.95.123	10.0.95.123
125	10.0.95.124/32	10.0.95.124 – 10.0.95.124	10.0.95.124
126	10.0.95.125/32	10.0.95.125 – 10.0.95.125	10.0.95.125
127	10.0.95.126/32	10.0.95.126 – 10.0.95.126	10.0.95.126
128	10.0.95.127/32	10.0.95.127 – 10.0.95.127	10.0.95.127
129	10.0.95.128/32	10.0.95.128 – 10.0.95.128	10.0.95.128
130	10.0.95.129/32	10.0.95.129 – 10.0.95.129	10.0.95.129
131	10.0.95.130/32	10.0.95.130 – 10.0.95.130	10.0.95.130
132	10.0.95.131/32	10.0.95.131 – 10.0.95.131	10.0.95.131
133	10.0.95.132/32	10.0.95.132 – 10.0.95.132	10.0.95.132
134	10.0.95.133/32	10.0.95.133 – 10.0.95.133	10.0.95.133
135	10.0.95.134/32	10.0.95.134 – 10.0.95.134	10.0.95.134
136	10.0.95.135/32	10.0.95.135 – 10.0.95.135	10.0.95.135
137	10.0.95.136/32	10.0.95.136 – 10.0.95.136	10.0.95.136
138	10.0.95.137/32	10.0.95.137 – 10.0.95.137	10.0.95.137
139	10.0.95.138/32	10.0.95.138 – 10.0.95.138	10.0.95.138
140	10.0.95.139/32	10.0.95.139 – 10.0.95.139	10.0.95.139
141	10.0.95.140/32	10.0.95.140 – 10.0.95.140	10.0.95.140
142	10.0.95.141/32	10.0.95.141 – 10.0.95.141	10.0.95.141
143	10.0.95.142/32	10.0.95.142 – 10.0.95.142	10.0.95.142
144	10.0.95.143/32	10.0.95.143 – 10.0.95.143	10.0.95.143
145	10.0.95.144/32	10.0.95.144 – 10.0.95.144	10.0.95.144
146	10.0.95.145/32	10.0.95.145 – 10.0.95.145	10.0.95.145
147	10.0.95.146/32	10.0.95.146 – 10.0.95.146	10.0.95.146
148	10.0.95.147/32	10.0.95.147 – 10.0.95.147	10.0.95.147
149	10.0.95.148/32	10.0.95.148 – 10.0.95.148	10.0.95.148
150	10.0.95.149/32	10.0.95.149 – 10.0.95.149	10.0.95.149
151	10.0.95.150/32	10.0.95.150 – 10.0.95.150	10.0.95.150
152	10.0.95.151/32	10.0.95.151 – 10.0.95.151	10.0.95.151
153	10.0.95.152/32	10.0.95.152 – 10.0.95.152	10.0.95.152
154	10.0.95.153/32	10.0.95.153 – 10.0.95.153	10.0.95.153
155	10.0.95.154/32	10.0.95.154 – 10.0.95.154	10.0.95.154
156	10.0.95.155/32	10.0.95.155 – 10.0.95.155	10.0.95.155
157	10.0.95.156/32	10.0.95.156 – 10.0.95.156	10.0.95.156
158	10.0.95.157/32	10.0.95.157 – 10.0.95.157	10.0.95.157
159	10.0.95.158/32	10.0.95.158 – 10.0.95.158	10.0.95.158
160	10.0.95.159/32	10.0.95.159 – 10.0.95.159	10.0.95.159
161	10.0.95.160/32	10.0.95.160 – 10.0.95.160	10.0.95.160
162	10.0.95.161/32	10.0.95.161 – 10.0.95.161	10.0.95.161
163	10.0.95.162/32	10.0.95.162 – 10.0.95.162	10.0.95.162
164	10.0.95.163/32	10.0.95.163 – 10.0.95.163	10.0.95.163
165	10.0.95.164/32	10.0.95.164 – 10.0.95.164	10.0.95.164
166	10.0.95.165/32	10.0.95.165 – 10.0.95.165	10.0.95.165
167	10.0.95.166/32	10.0.95.166 – 10.0.95.166	10.0.95.166
168	10.0.95.167/32	10.0.95.167 – 10.0.95.167	10.0.95.167
169	10.0.95.168/32	10.0.95.168 – 10.0.95.168	10.0.95.168
170	10.0.95.169/32	10.0.95.169 – 10.0.95.169	10.0.95.169
171	10.0.95.170/32	10.0.95.170 – 10.0.95.170	10.0.95.170
172	10.0.95.171/32	10.0.95.171 – 10.0.95.171	10.0.95.171
173	10.0.95.172/32	10.0.95.172 – 10.0.95.172	10.0.95.172
174	10.0.95.173/32	10.0.95.173 – 10.0.95.173	10.0.95.173
175	10.0.95.174/32	10.0.95.174 – 10.0.95.174	10.0.95.174
176	10.0.95.175/32	10.0.95.175 – 10.0.95.175	10.0.95.175
177	10.0.95.176/32	10.0.95.176 – 10.0.95.176	10.0.95.176
178	10.0.95.177/32	10.0.95.177 – 10.0.95.177	10.0.95.177
179	10.0.95.178/32	10.0.95.178 – 10.0.95.178	10.0.95.178
180	10.0.95.179/32	10.0.95.179 – 10.0.95.179	10.0.95.179
181	10.0.95.180/32	10.0.95.180 – 10.0.95.180	10.0.95.180
182	10.0.95.181/32	10.0.95.181 – 10.0.95.181	10.0.95.181
183	10.0.95.182/32	10.0.95.182 – 10.0.95.182	10.0.95.182
184	10.0.95.183/32	10.0.95.183 – 10.0.95.183	10.0.95.183
185	10.0.95.184/32	10.0.95.184 – 10.0.95.184	10.0.95.184
186	10.0.95.185/32	10.0.95.185 – 10.0.95.185	10.0.95.185
187	10.0.95.186/32	10.0.95.186 – 10.0.95.186	10.0.95.186
188	10.0.95.187/32	10.0.95.187 – 10.0.95.187	10.0.95.187
189	10.0.95.188/32	10.0.95.188 – 10.0.95.188	10.0.95.188
190	10.0.95.189/32	10.0.95.189 – 10.0.95.189	10.0.95.189
191	10.0.95.190/32	10.0.95.190 – 10.0.95.190	10.0.95.190
192	10.0.95.191/32	10.0.95.191 – 10.0.95.191	10.0.95.191
193	10.0.95.192/32	10.0.95.192 – 10.0.95.192	10.0.95.192
194	10.0.95.193/32	10.0.95.193 – 10.0.95.193	10.0.95.193
195	10.0.95.194/32	10.0.95.194 – 10.0.95.194	10.0.95.194
196	10.0.95.195/32	10.0.95.195 – 10.0.95.195	10.0.95.195
197	10.0.95.196/32	10.0.95.196 – 10.0.95.196	10.0.95.196
198	10.0.95.197/32	10.0.95.197 – 10.0.95.197	10.0.95.197
199	10.0.95.198/32	10.0.95.198 – 10.0.95.198	10.0.95.198
200	10.0.95.199/32	10.0.95.199 – 10.0.95.199	10.0.95.199
201	10.0.95.200/32	10.0.95.200 – 10.0.95.200	10.0.95.200
202	10.0.95.201/32	10.0.95.201 – 10.0.95.201	10.0.95.201
203	10.0.95.202/32	10.0.95.202 – 10.0.95.202	10.0.95.202
204	10.0.95.203/32	10.0.95.203 – 10.0.95.203	10.0.95.203
205	10.0.95.204/32	10.0.95.204 – 10.0.95.204	10.0.95.204
206	10.0.95.205/32	10.0.95.205 – 10.0.95.205	10.0.95.205
207	10.0.95.206/32	10.0.95.206 – 10.0.95.206	10.0.95.206
208	10.0.95.207/32	10.0.95.207 – 10.0.95.207	10.0.95.207
209	10.0.95.208/32	10.0.95.208 – 10.0.95.208	10.0.95.208
210	10.0.95.209/32	10.0.95.209 – 10.0.95.209	10.0.95.209
211	10.0.95.210/32	10.0.95.210 – 10.0.95.210	10.0.95.210
212	10.0.95.211/32	10.0.95.211 – 10.0.95.211	10.0.95.211
213	10.0.95.212/32	10.0.95.212 – 10.0.95.212	10.0.95.212
214	10.0.95.213/32	10.0.95.213 – 10.0.95.213	10.0.95.213
215	10.0.95.214/32	10.0.95.214 – 10.0.95.214	10.0.95.214
216	10.0.95.215/32	10.0.95.215 – 10.0.95.215	10.0.95.215
217	10.0.95.216/32	10.0.95.216 – 10.0.95.216	10.0.95.216
218	10.0.95.217/32	10.0.95.217 – 10.0.95.217	10.0.95.217
219	10.0.95.218/32	10.0.95.218 – 10.0.95.218	10.0.95.218
220	10.0.95.219/32	10.0.95.219 – 10.0.95.219	10.0.95.219
221	10.0.95.220/32	10.0.95.220 – 10.0.95.220	10.0.95.220
222	10.0.95.221/32	10.0.95.221 – 10.0.95.221	10.0.95.221
223	10.0.95.222/32	10.0.95.222 – 10.0.95.222	10.0.95.222
224	10.0.95.223/32	10.0.95.223 – 10.0.95.223	10.0.95.223
225	10.0.95.224/32	10.0.95.224 – 10.0.95.224	10.0.95.224
226	10.0.95.225/32	10.0.95.225 – 10.0.95.225	10.0.95.225
227	10.0.95.226/32	10.0.95.226 – 10.0.95.226	10.0.95.226
228	10.0.95.227/32	10.0.95.227 – 10.0.95.227	10.0.95.227
229	10.0.95.228/32	10.0.95.228 – 10.0.95.228	10.0.95.228
230	10.0.95.229/32	10.0.95.229 – 10.0.95.229	10.0.95.229
231	10.0.95.230/32	10.0.95.230 – 10.0.95.230	10.0.95.230
232	10.0.95.231/32	10.0.95.231 – 10.0.95.231	10.0.95.231
233	10.0.95.232/32	10.0.95.232 – 10.0.95.232	10.0.95.232
234	10.0.95.233/32	10.0.95.233 – 10.0.95.233	10.0.95.233
235	10.0.95.234/32	10.0.95.234 – 10.0.95.234	10.0.95.234
236	10.0.95.235/32	10.0.95.235 – 10.0.95.235	10.0.95.235
237	10.0.95.236/32	10.0.95.236 – 10.0.95.236	10.0.95.236
238	10.0.95.237/32	10.0.95.237 – 10.0.95.237	10.0.95.237
239	10.0.95.238/32	10.0.95.238 – 10.0.95.238	10.0.95.238
240	10.0.95.239/32	10.0.95.239 – 10.0.95.239	10.0.95.239
241	10.0.95.240/32	10.0.95.240 – 10.0.95.240	10.0.95.240
242	10.0.95.241/32	10.0.95.241 – 10.0.95.241	10.0.95.241
243	10.0.95.242/32	10.0.95.242 – 10.0.95.242	10.0.95.242
244	10.0.95.243/32	10.0.95.243 – 10.0.95.243	10.0.95.243
245	10.0.95.244/32	10.0.95.244 – 10.0.95.244	10.0.95.244
246	10.0.95.245/32	10.0.95.245 – 10.0.95.245	10.0.95.245
247	10.0.95.246/32	10.0.95.246 – 10.0.95.246	10.0.95.246
248	10.0.95.247/32	10.0.95.247 – 10.0.95.247	10.0.95.247
249	10.0.95.248/32	10.0.95.248 – 10.0.95.248	10.0.95.248
250	10.0.95.249/32	10.0.95.249 – 10.0.95.249	10.0.95.249
251	10.0.95.250/32	10.0.95.250 – 10.0.95.250	10.0.95.250
252	10.0.95.251/32	10.0.95.251 – 10.0.95.251	10.0.95.251
253	10.0.95.252/32	10.0.95.252 – 10.0.95.252	10.0.95.252
254	10.0.95.253/32	10.0.95.253 – 10.0.95.253	10.0.95.253
255	10.0.95.254/32	10.0.95.254 – 10.0.95.254	10.0.95.254
256	10.0.95.255/32	10.0.95.255 – 10.0.95.255	10.0.95.255

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 →