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)10.76.155.0/24

network10.76.155.0/24

broadcast10.76.155.255

first host10.76.155.1

last host10.76.155.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.76.155.0/24

address00001010.01001100.10011011.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.01001100.10011011.00000000

broadcast00001010.01001100.10011011.11111111

green = network part, grey = host part

hex0x0a4c9b00

decimal172792576

reverse dns0.155.76.10.in-addr.arpa

ipv4-mapped::ffff:a4c:9b00

/24 split into /32 · 256 subnets

close ×

#	network	host range	broadcast
1	10.76.155.0/32	10.76.155.0 – 10.76.155.0	10.76.155.0
2	10.76.155.1/32	10.76.155.1 – 10.76.155.1	10.76.155.1
3	10.76.155.2/32	10.76.155.2 – 10.76.155.2	10.76.155.2
4	10.76.155.3/32	10.76.155.3 – 10.76.155.3	10.76.155.3
5	10.76.155.4/32	10.76.155.4 – 10.76.155.4	10.76.155.4
6	10.76.155.5/32	10.76.155.5 – 10.76.155.5	10.76.155.5
7	10.76.155.6/32	10.76.155.6 – 10.76.155.6	10.76.155.6
8	10.76.155.7/32	10.76.155.7 – 10.76.155.7	10.76.155.7
9	10.76.155.8/32	10.76.155.8 – 10.76.155.8	10.76.155.8
10	10.76.155.9/32	10.76.155.9 – 10.76.155.9	10.76.155.9
11	10.76.155.10/32	10.76.155.10 – 10.76.155.10	10.76.155.10
12	10.76.155.11/32	10.76.155.11 – 10.76.155.11	10.76.155.11
13	10.76.155.12/32	10.76.155.12 – 10.76.155.12	10.76.155.12
14	10.76.155.13/32	10.76.155.13 – 10.76.155.13	10.76.155.13
15	10.76.155.14/32	10.76.155.14 – 10.76.155.14	10.76.155.14
16	10.76.155.15/32	10.76.155.15 – 10.76.155.15	10.76.155.15
17	10.76.155.16/32	10.76.155.16 – 10.76.155.16	10.76.155.16
18	10.76.155.17/32	10.76.155.17 – 10.76.155.17	10.76.155.17
19	10.76.155.18/32	10.76.155.18 – 10.76.155.18	10.76.155.18
20	10.76.155.19/32	10.76.155.19 – 10.76.155.19	10.76.155.19
21	10.76.155.20/32	10.76.155.20 – 10.76.155.20	10.76.155.20
22	10.76.155.21/32	10.76.155.21 – 10.76.155.21	10.76.155.21
23	10.76.155.22/32	10.76.155.22 – 10.76.155.22	10.76.155.22
24	10.76.155.23/32	10.76.155.23 – 10.76.155.23	10.76.155.23
25	10.76.155.24/32	10.76.155.24 – 10.76.155.24	10.76.155.24
26	10.76.155.25/32	10.76.155.25 – 10.76.155.25	10.76.155.25
27	10.76.155.26/32	10.76.155.26 – 10.76.155.26	10.76.155.26
28	10.76.155.27/32	10.76.155.27 – 10.76.155.27	10.76.155.27
29	10.76.155.28/32	10.76.155.28 – 10.76.155.28	10.76.155.28
30	10.76.155.29/32	10.76.155.29 – 10.76.155.29	10.76.155.29
31	10.76.155.30/32	10.76.155.30 – 10.76.155.30	10.76.155.30
32	10.76.155.31/32	10.76.155.31 – 10.76.155.31	10.76.155.31
33	10.76.155.32/32	10.76.155.32 – 10.76.155.32	10.76.155.32
34	10.76.155.33/32	10.76.155.33 – 10.76.155.33	10.76.155.33
35	10.76.155.34/32	10.76.155.34 – 10.76.155.34	10.76.155.34
36	10.76.155.35/32	10.76.155.35 – 10.76.155.35	10.76.155.35
37	10.76.155.36/32	10.76.155.36 – 10.76.155.36	10.76.155.36
38	10.76.155.37/32	10.76.155.37 – 10.76.155.37	10.76.155.37
39	10.76.155.38/32	10.76.155.38 – 10.76.155.38	10.76.155.38
40	10.76.155.39/32	10.76.155.39 – 10.76.155.39	10.76.155.39
41	10.76.155.40/32	10.76.155.40 – 10.76.155.40	10.76.155.40
42	10.76.155.41/32	10.76.155.41 – 10.76.155.41	10.76.155.41
43	10.76.155.42/32	10.76.155.42 – 10.76.155.42	10.76.155.42
44	10.76.155.43/32	10.76.155.43 – 10.76.155.43	10.76.155.43
45	10.76.155.44/32	10.76.155.44 – 10.76.155.44	10.76.155.44
46	10.76.155.45/32	10.76.155.45 – 10.76.155.45	10.76.155.45
47	10.76.155.46/32	10.76.155.46 – 10.76.155.46	10.76.155.46
48	10.76.155.47/32	10.76.155.47 – 10.76.155.47	10.76.155.47
49	10.76.155.48/32	10.76.155.48 – 10.76.155.48	10.76.155.48
50	10.76.155.49/32	10.76.155.49 – 10.76.155.49	10.76.155.49
51	10.76.155.50/32	10.76.155.50 – 10.76.155.50	10.76.155.50
52	10.76.155.51/32	10.76.155.51 – 10.76.155.51	10.76.155.51
53	10.76.155.52/32	10.76.155.52 – 10.76.155.52	10.76.155.52
54	10.76.155.53/32	10.76.155.53 – 10.76.155.53	10.76.155.53
55	10.76.155.54/32	10.76.155.54 – 10.76.155.54	10.76.155.54
56	10.76.155.55/32	10.76.155.55 – 10.76.155.55	10.76.155.55
57	10.76.155.56/32	10.76.155.56 – 10.76.155.56	10.76.155.56
58	10.76.155.57/32	10.76.155.57 – 10.76.155.57	10.76.155.57
59	10.76.155.58/32	10.76.155.58 – 10.76.155.58	10.76.155.58
60	10.76.155.59/32	10.76.155.59 – 10.76.155.59	10.76.155.59
61	10.76.155.60/32	10.76.155.60 – 10.76.155.60	10.76.155.60
62	10.76.155.61/32	10.76.155.61 – 10.76.155.61	10.76.155.61
63	10.76.155.62/32	10.76.155.62 – 10.76.155.62	10.76.155.62
64	10.76.155.63/32	10.76.155.63 – 10.76.155.63	10.76.155.63
65	10.76.155.64/32	10.76.155.64 – 10.76.155.64	10.76.155.64
66	10.76.155.65/32	10.76.155.65 – 10.76.155.65	10.76.155.65
67	10.76.155.66/32	10.76.155.66 – 10.76.155.66	10.76.155.66
68	10.76.155.67/32	10.76.155.67 – 10.76.155.67	10.76.155.67
69	10.76.155.68/32	10.76.155.68 – 10.76.155.68	10.76.155.68
70	10.76.155.69/32	10.76.155.69 – 10.76.155.69	10.76.155.69
71	10.76.155.70/32	10.76.155.70 – 10.76.155.70	10.76.155.70
72	10.76.155.71/32	10.76.155.71 – 10.76.155.71	10.76.155.71
73	10.76.155.72/32	10.76.155.72 – 10.76.155.72	10.76.155.72
74	10.76.155.73/32	10.76.155.73 – 10.76.155.73	10.76.155.73
75	10.76.155.74/32	10.76.155.74 – 10.76.155.74	10.76.155.74
76	10.76.155.75/32	10.76.155.75 – 10.76.155.75	10.76.155.75
77	10.76.155.76/32	10.76.155.76 – 10.76.155.76	10.76.155.76
78	10.76.155.77/32	10.76.155.77 – 10.76.155.77	10.76.155.77
79	10.76.155.78/32	10.76.155.78 – 10.76.155.78	10.76.155.78
80	10.76.155.79/32	10.76.155.79 – 10.76.155.79	10.76.155.79
81	10.76.155.80/32	10.76.155.80 – 10.76.155.80	10.76.155.80
82	10.76.155.81/32	10.76.155.81 – 10.76.155.81	10.76.155.81
83	10.76.155.82/32	10.76.155.82 – 10.76.155.82	10.76.155.82
84	10.76.155.83/32	10.76.155.83 – 10.76.155.83	10.76.155.83
85	10.76.155.84/32	10.76.155.84 – 10.76.155.84	10.76.155.84
86	10.76.155.85/32	10.76.155.85 – 10.76.155.85	10.76.155.85
87	10.76.155.86/32	10.76.155.86 – 10.76.155.86	10.76.155.86
88	10.76.155.87/32	10.76.155.87 – 10.76.155.87	10.76.155.87
89	10.76.155.88/32	10.76.155.88 – 10.76.155.88	10.76.155.88
90	10.76.155.89/32	10.76.155.89 – 10.76.155.89	10.76.155.89
91	10.76.155.90/32	10.76.155.90 – 10.76.155.90	10.76.155.90
92	10.76.155.91/32	10.76.155.91 – 10.76.155.91	10.76.155.91
93	10.76.155.92/32	10.76.155.92 – 10.76.155.92	10.76.155.92
94	10.76.155.93/32	10.76.155.93 – 10.76.155.93	10.76.155.93
95	10.76.155.94/32	10.76.155.94 – 10.76.155.94	10.76.155.94
96	10.76.155.95/32	10.76.155.95 – 10.76.155.95	10.76.155.95
97	10.76.155.96/32	10.76.155.96 – 10.76.155.96	10.76.155.96
98	10.76.155.97/32	10.76.155.97 – 10.76.155.97	10.76.155.97
99	10.76.155.98/32	10.76.155.98 – 10.76.155.98	10.76.155.98
100	10.76.155.99/32	10.76.155.99 – 10.76.155.99	10.76.155.99
101	10.76.155.100/32	10.76.155.100 – 10.76.155.100	10.76.155.100
102	10.76.155.101/32	10.76.155.101 – 10.76.155.101	10.76.155.101
103	10.76.155.102/32	10.76.155.102 – 10.76.155.102	10.76.155.102
104	10.76.155.103/32	10.76.155.103 – 10.76.155.103	10.76.155.103
105	10.76.155.104/32	10.76.155.104 – 10.76.155.104	10.76.155.104
106	10.76.155.105/32	10.76.155.105 – 10.76.155.105	10.76.155.105
107	10.76.155.106/32	10.76.155.106 – 10.76.155.106	10.76.155.106
108	10.76.155.107/32	10.76.155.107 – 10.76.155.107	10.76.155.107
109	10.76.155.108/32	10.76.155.108 – 10.76.155.108	10.76.155.108
110	10.76.155.109/32	10.76.155.109 – 10.76.155.109	10.76.155.109
111	10.76.155.110/32	10.76.155.110 – 10.76.155.110	10.76.155.110
112	10.76.155.111/32	10.76.155.111 – 10.76.155.111	10.76.155.111
113	10.76.155.112/32	10.76.155.112 – 10.76.155.112	10.76.155.112
114	10.76.155.113/32	10.76.155.113 – 10.76.155.113	10.76.155.113
115	10.76.155.114/32	10.76.155.114 – 10.76.155.114	10.76.155.114
116	10.76.155.115/32	10.76.155.115 – 10.76.155.115	10.76.155.115
117	10.76.155.116/32	10.76.155.116 – 10.76.155.116	10.76.155.116
118	10.76.155.117/32	10.76.155.117 – 10.76.155.117	10.76.155.117
119	10.76.155.118/32	10.76.155.118 – 10.76.155.118	10.76.155.118
120	10.76.155.119/32	10.76.155.119 – 10.76.155.119	10.76.155.119
121	10.76.155.120/32	10.76.155.120 – 10.76.155.120	10.76.155.120
122	10.76.155.121/32	10.76.155.121 – 10.76.155.121	10.76.155.121
123	10.76.155.122/32	10.76.155.122 – 10.76.155.122	10.76.155.122
124	10.76.155.123/32	10.76.155.123 – 10.76.155.123	10.76.155.123
125	10.76.155.124/32	10.76.155.124 – 10.76.155.124	10.76.155.124
126	10.76.155.125/32	10.76.155.125 – 10.76.155.125	10.76.155.125
127	10.76.155.126/32	10.76.155.126 – 10.76.155.126	10.76.155.126
128	10.76.155.127/32	10.76.155.127 – 10.76.155.127	10.76.155.127
129	10.76.155.128/32	10.76.155.128 – 10.76.155.128	10.76.155.128
130	10.76.155.129/32	10.76.155.129 – 10.76.155.129	10.76.155.129
131	10.76.155.130/32	10.76.155.130 – 10.76.155.130	10.76.155.130
132	10.76.155.131/32	10.76.155.131 – 10.76.155.131	10.76.155.131
133	10.76.155.132/32	10.76.155.132 – 10.76.155.132	10.76.155.132
134	10.76.155.133/32	10.76.155.133 – 10.76.155.133	10.76.155.133
135	10.76.155.134/32	10.76.155.134 – 10.76.155.134	10.76.155.134
136	10.76.155.135/32	10.76.155.135 – 10.76.155.135	10.76.155.135
137	10.76.155.136/32	10.76.155.136 – 10.76.155.136	10.76.155.136
138	10.76.155.137/32	10.76.155.137 – 10.76.155.137	10.76.155.137
139	10.76.155.138/32	10.76.155.138 – 10.76.155.138	10.76.155.138
140	10.76.155.139/32	10.76.155.139 – 10.76.155.139	10.76.155.139
141	10.76.155.140/32	10.76.155.140 – 10.76.155.140	10.76.155.140
142	10.76.155.141/32	10.76.155.141 – 10.76.155.141	10.76.155.141
143	10.76.155.142/32	10.76.155.142 – 10.76.155.142	10.76.155.142
144	10.76.155.143/32	10.76.155.143 – 10.76.155.143	10.76.155.143
145	10.76.155.144/32	10.76.155.144 – 10.76.155.144	10.76.155.144
146	10.76.155.145/32	10.76.155.145 – 10.76.155.145	10.76.155.145
147	10.76.155.146/32	10.76.155.146 – 10.76.155.146	10.76.155.146
148	10.76.155.147/32	10.76.155.147 – 10.76.155.147	10.76.155.147
149	10.76.155.148/32	10.76.155.148 – 10.76.155.148	10.76.155.148
150	10.76.155.149/32	10.76.155.149 – 10.76.155.149	10.76.155.149
151	10.76.155.150/32	10.76.155.150 – 10.76.155.150	10.76.155.150
152	10.76.155.151/32	10.76.155.151 – 10.76.155.151	10.76.155.151
153	10.76.155.152/32	10.76.155.152 – 10.76.155.152	10.76.155.152
154	10.76.155.153/32	10.76.155.153 – 10.76.155.153	10.76.155.153
155	10.76.155.154/32	10.76.155.154 – 10.76.155.154	10.76.155.154
156	10.76.155.155/32	10.76.155.155 – 10.76.155.155	10.76.155.155
157	10.76.155.156/32	10.76.155.156 – 10.76.155.156	10.76.155.156
158	10.76.155.157/32	10.76.155.157 – 10.76.155.157	10.76.155.157
159	10.76.155.158/32	10.76.155.158 – 10.76.155.158	10.76.155.158
160	10.76.155.159/32	10.76.155.159 – 10.76.155.159	10.76.155.159
161	10.76.155.160/32	10.76.155.160 – 10.76.155.160	10.76.155.160
162	10.76.155.161/32	10.76.155.161 – 10.76.155.161	10.76.155.161
163	10.76.155.162/32	10.76.155.162 – 10.76.155.162	10.76.155.162
164	10.76.155.163/32	10.76.155.163 – 10.76.155.163	10.76.155.163
165	10.76.155.164/32	10.76.155.164 – 10.76.155.164	10.76.155.164
166	10.76.155.165/32	10.76.155.165 – 10.76.155.165	10.76.155.165
167	10.76.155.166/32	10.76.155.166 – 10.76.155.166	10.76.155.166
168	10.76.155.167/32	10.76.155.167 – 10.76.155.167	10.76.155.167
169	10.76.155.168/32	10.76.155.168 – 10.76.155.168	10.76.155.168
170	10.76.155.169/32	10.76.155.169 – 10.76.155.169	10.76.155.169
171	10.76.155.170/32	10.76.155.170 – 10.76.155.170	10.76.155.170
172	10.76.155.171/32	10.76.155.171 – 10.76.155.171	10.76.155.171
173	10.76.155.172/32	10.76.155.172 – 10.76.155.172	10.76.155.172
174	10.76.155.173/32	10.76.155.173 – 10.76.155.173	10.76.155.173
175	10.76.155.174/32	10.76.155.174 – 10.76.155.174	10.76.155.174
176	10.76.155.175/32	10.76.155.175 – 10.76.155.175	10.76.155.175
177	10.76.155.176/32	10.76.155.176 – 10.76.155.176	10.76.155.176
178	10.76.155.177/32	10.76.155.177 – 10.76.155.177	10.76.155.177
179	10.76.155.178/32	10.76.155.178 – 10.76.155.178	10.76.155.178
180	10.76.155.179/32	10.76.155.179 – 10.76.155.179	10.76.155.179
181	10.76.155.180/32	10.76.155.180 – 10.76.155.180	10.76.155.180
182	10.76.155.181/32	10.76.155.181 – 10.76.155.181	10.76.155.181
183	10.76.155.182/32	10.76.155.182 – 10.76.155.182	10.76.155.182
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186	10.76.155.185/32	10.76.155.185 – 10.76.155.185	10.76.155.185
187	10.76.155.186/32	10.76.155.186 – 10.76.155.186	10.76.155.186
188	10.76.155.187/32	10.76.155.187 – 10.76.155.187	10.76.155.187
189	10.76.155.188/32	10.76.155.188 – 10.76.155.188	10.76.155.188
190	10.76.155.189/32	10.76.155.189 – 10.76.155.189	10.76.155.189
191	10.76.155.190/32	10.76.155.190 – 10.76.155.190	10.76.155.190
192	10.76.155.191/32	10.76.155.191 – 10.76.155.191	10.76.155.191
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194	10.76.155.193/32	10.76.155.193 – 10.76.155.193	10.76.155.193
195	10.76.155.194/32	10.76.155.194 – 10.76.155.194	10.76.155.194
196	10.76.155.195/32	10.76.155.195 – 10.76.155.195	10.76.155.195
197	10.76.155.196/32	10.76.155.196 – 10.76.155.196	10.76.155.196
198	10.76.155.197/32	10.76.155.197 – 10.76.155.197	10.76.155.197
199	10.76.155.198/32	10.76.155.198 – 10.76.155.198	10.76.155.198
200	10.76.155.199/32	10.76.155.199 – 10.76.155.199	10.76.155.199
201	10.76.155.200/32	10.76.155.200 – 10.76.155.200	10.76.155.200
202	10.76.155.201/32	10.76.155.201 – 10.76.155.201	10.76.155.201
203	10.76.155.202/32	10.76.155.202 – 10.76.155.202	10.76.155.202
204	10.76.155.203/32	10.76.155.203 – 10.76.155.203	10.76.155.203
205	10.76.155.204/32	10.76.155.204 – 10.76.155.204	10.76.155.204
206	10.76.155.205/32	10.76.155.205 – 10.76.155.205	10.76.155.205
207	10.76.155.206/32	10.76.155.206 – 10.76.155.206	10.76.155.206
208	10.76.155.207/32	10.76.155.207 – 10.76.155.207	10.76.155.207
209	10.76.155.208/32	10.76.155.208 – 10.76.155.208	10.76.155.208
210	10.76.155.209/32	10.76.155.209 – 10.76.155.209	10.76.155.209
211	10.76.155.210/32	10.76.155.210 – 10.76.155.210	10.76.155.210
212	10.76.155.211/32	10.76.155.211 – 10.76.155.211	10.76.155.211
213	10.76.155.212/32	10.76.155.212 – 10.76.155.212	10.76.155.212
214	10.76.155.213/32	10.76.155.213 – 10.76.155.213	10.76.155.213
215	10.76.155.214/32	10.76.155.214 – 10.76.155.214	10.76.155.214
216	10.76.155.215/32	10.76.155.215 – 10.76.155.215	10.76.155.215
217	10.76.155.216/32	10.76.155.216 – 10.76.155.216	10.76.155.216
218	10.76.155.217/32	10.76.155.217 – 10.76.155.217	10.76.155.217
219	10.76.155.218/32	10.76.155.218 – 10.76.155.218	10.76.155.218
220	10.76.155.219/32	10.76.155.219 – 10.76.155.219	10.76.155.219
221	10.76.155.220/32	10.76.155.220 – 10.76.155.220	10.76.155.220
222	10.76.155.221/32	10.76.155.221 – 10.76.155.221	10.76.155.221
223	10.76.155.222/32	10.76.155.222 – 10.76.155.222	10.76.155.222
224	10.76.155.223/32	10.76.155.223 – 10.76.155.223	10.76.155.223
225	10.76.155.224/32	10.76.155.224 – 10.76.155.224	10.76.155.224
226	10.76.155.225/32	10.76.155.225 – 10.76.155.225	10.76.155.225
227	10.76.155.226/32	10.76.155.226 – 10.76.155.226	10.76.155.226
228	10.76.155.227/32	10.76.155.227 – 10.76.155.227	10.76.155.227
229	10.76.155.228/32	10.76.155.228 – 10.76.155.228	10.76.155.228
230	10.76.155.229/32	10.76.155.229 – 10.76.155.229	10.76.155.229
231	10.76.155.230/32	10.76.155.230 – 10.76.155.230	10.76.155.230
232	10.76.155.231/32	10.76.155.231 – 10.76.155.231	10.76.155.231
233	10.76.155.232/32	10.76.155.232 – 10.76.155.232	10.76.155.232
234	10.76.155.233/32	10.76.155.233 – 10.76.155.233	10.76.155.233
235	10.76.155.234/32	10.76.155.234 – 10.76.155.234	10.76.155.234
236	10.76.155.235/32	10.76.155.235 – 10.76.155.235	10.76.155.235
237	10.76.155.236/32	10.76.155.236 – 10.76.155.236	10.76.155.236
238	10.76.155.237/32	10.76.155.237 – 10.76.155.237	10.76.155.237
239	10.76.155.238/32	10.76.155.238 – 10.76.155.238	10.76.155.238
240	10.76.155.239/32	10.76.155.239 – 10.76.155.239	10.76.155.239
241	10.76.155.240/32	10.76.155.240 – 10.76.155.240	10.76.155.240
242	10.76.155.241/32	10.76.155.241 – 10.76.155.241	10.76.155.241
243	10.76.155.242/32	10.76.155.242 – 10.76.155.242	10.76.155.242
244	10.76.155.243/32	10.76.155.243 – 10.76.155.243	10.76.155.243
245	10.76.155.244/32	10.76.155.244 – 10.76.155.244	10.76.155.244
246	10.76.155.245/32	10.76.155.245 – 10.76.155.245	10.76.155.245
247	10.76.155.246/32	10.76.155.246 – 10.76.155.246	10.76.155.246
248	10.76.155.247/32	10.76.155.247 – 10.76.155.247	10.76.155.247
249	10.76.155.248/32	10.76.155.248 – 10.76.155.248	10.76.155.248
250	10.76.155.249/32	10.76.155.249 – 10.76.155.249	10.76.155.249
251	10.76.155.250/32	10.76.155.250 – 10.76.155.250	10.76.155.250
252	10.76.155.251/32	10.76.155.251 – 10.76.155.251	10.76.155.251
253	10.76.155.252/32	10.76.155.252 – 10.76.155.252	10.76.155.252
254	10.76.155.253/32	10.76.155.253 – 10.76.155.253	10.76.155.253
255	10.76.155.254/32	10.76.155.254 – 10.76.155.254	10.76.155.254
256	10.76.155.255/32	10.76.155.255 – 10.76.155.255	10.76.155.255

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 →