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)10.0.140.0/22

network10.0.140.0/22

broadcast10.0.143.255

first host10.0.140.1

last host10.0.143.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.0.140.0/22

address00001010.00000000.10001100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000000.10001100.00000000

broadcast00001010.00000000.10001111.11111111

green = network part, grey = host part

hex0x0a008c00

decimal167808000

reverse dns0.140.0.10.in-addr.arpa

ipv4-mapped::ffff:a00:8c00

/22 split into /31 · 512 subnets

close ×

#	network	host range	broadcast
1	10.0.140.0/31	10.0.140.0 – 10.0.140.1	10.0.140.1
2	10.0.140.2/31	10.0.140.2 – 10.0.140.3	10.0.140.3
3	10.0.140.4/31	10.0.140.4 – 10.0.140.5	10.0.140.5
4	10.0.140.6/31	10.0.140.6 – 10.0.140.7	10.0.140.7
5	10.0.140.8/31	10.0.140.8 – 10.0.140.9	10.0.140.9
6	10.0.140.10/31	10.0.140.10 – 10.0.140.11	10.0.140.11
7	10.0.140.12/31	10.0.140.12 – 10.0.140.13	10.0.140.13
8	10.0.140.14/31	10.0.140.14 – 10.0.140.15	10.0.140.15
9	10.0.140.16/31	10.0.140.16 – 10.0.140.17	10.0.140.17
10	10.0.140.18/31	10.0.140.18 – 10.0.140.19	10.0.140.19
11	10.0.140.20/31	10.0.140.20 – 10.0.140.21	10.0.140.21
12	10.0.140.22/31	10.0.140.22 – 10.0.140.23	10.0.140.23
13	10.0.140.24/31	10.0.140.24 – 10.0.140.25	10.0.140.25
14	10.0.140.26/31	10.0.140.26 – 10.0.140.27	10.0.140.27
15	10.0.140.28/31	10.0.140.28 – 10.0.140.29	10.0.140.29
16	10.0.140.30/31	10.0.140.30 – 10.0.140.31	10.0.140.31
17	10.0.140.32/31	10.0.140.32 – 10.0.140.33	10.0.140.33
18	10.0.140.34/31	10.0.140.34 – 10.0.140.35	10.0.140.35
19	10.0.140.36/31	10.0.140.36 – 10.0.140.37	10.0.140.37
20	10.0.140.38/31	10.0.140.38 – 10.0.140.39	10.0.140.39
21	10.0.140.40/31	10.0.140.40 – 10.0.140.41	10.0.140.41
22	10.0.140.42/31	10.0.140.42 – 10.0.140.43	10.0.140.43
23	10.0.140.44/31	10.0.140.44 – 10.0.140.45	10.0.140.45
24	10.0.140.46/31	10.0.140.46 – 10.0.140.47	10.0.140.47
25	10.0.140.48/31	10.0.140.48 – 10.0.140.49	10.0.140.49
26	10.0.140.50/31	10.0.140.50 – 10.0.140.51	10.0.140.51
27	10.0.140.52/31	10.0.140.52 – 10.0.140.53	10.0.140.53
28	10.0.140.54/31	10.0.140.54 – 10.0.140.55	10.0.140.55
29	10.0.140.56/31	10.0.140.56 – 10.0.140.57	10.0.140.57
30	10.0.140.58/31	10.0.140.58 – 10.0.140.59	10.0.140.59
31	10.0.140.60/31	10.0.140.60 – 10.0.140.61	10.0.140.61
32	10.0.140.62/31	10.0.140.62 – 10.0.140.63	10.0.140.63
33	10.0.140.64/31	10.0.140.64 – 10.0.140.65	10.0.140.65
34	10.0.140.66/31	10.0.140.66 – 10.0.140.67	10.0.140.67
35	10.0.140.68/31	10.0.140.68 – 10.0.140.69	10.0.140.69
36	10.0.140.70/31	10.0.140.70 – 10.0.140.71	10.0.140.71
37	10.0.140.72/31	10.0.140.72 – 10.0.140.73	10.0.140.73
38	10.0.140.74/31	10.0.140.74 – 10.0.140.75	10.0.140.75
39	10.0.140.76/31	10.0.140.76 – 10.0.140.77	10.0.140.77
40	10.0.140.78/31	10.0.140.78 – 10.0.140.79	10.0.140.79
41	10.0.140.80/31	10.0.140.80 – 10.0.140.81	10.0.140.81
42	10.0.140.82/31	10.0.140.82 – 10.0.140.83	10.0.140.83
43	10.0.140.84/31	10.0.140.84 – 10.0.140.85	10.0.140.85
44	10.0.140.86/31	10.0.140.86 – 10.0.140.87	10.0.140.87
45	10.0.140.88/31	10.0.140.88 – 10.0.140.89	10.0.140.89
46	10.0.140.90/31	10.0.140.90 – 10.0.140.91	10.0.140.91
47	10.0.140.92/31	10.0.140.92 – 10.0.140.93	10.0.140.93
48	10.0.140.94/31	10.0.140.94 – 10.0.140.95	10.0.140.95
49	10.0.140.96/31	10.0.140.96 – 10.0.140.97	10.0.140.97
50	10.0.140.98/31	10.0.140.98 – 10.0.140.99	10.0.140.99
51	10.0.140.100/31	10.0.140.100 – 10.0.140.101	10.0.140.101
52	10.0.140.102/31	10.0.140.102 – 10.0.140.103	10.0.140.103
53	10.0.140.104/31	10.0.140.104 – 10.0.140.105	10.0.140.105
54	10.0.140.106/31	10.0.140.106 – 10.0.140.107	10.0.140.107
55	10.0.140.108/31	10.0.140.108 – 10.0.140.109	10.0.140.109
56	10.0.140.110/31	10.0.140.110 – 10.0.140.111	10.0.140.111
57	10.0.140.112/31	10.0.140.112 – 10.0.140.113	10.0.140.113
58	10.0.140.114/31	10.0.140.114 – 10.0.140.115	10.0.140.115
59	10.0.140.116/31	10.0.140.116 – 10.0.140.117	10.0.140.117
60	10.0.140.118/31	10.0.140.118 – 10.0.140.119	10.0.140.119
61	10.0.140.120/31	10.0.140.120 – 10.0.140.121	10.0.140.121
62	10.0.140.122/31	10.0.140.122 – 10.0.140.123	10.0.140.123
63	10.0.140.124/31	10.0.140.124 – 10.0.140.125	10.0.140.125
64	10.0.140.126/31	10.0.140.126 – 10.0.140.127	10.0.140.127
65	10.0.140.128/31	10.0.140.128 – 10.0.140.129	10.0.140.129
66	10.0.140.130/31	10.0.140.130 – 10.0.140.131	10.0.140.131
67	10.0.140.132/31	10.0.140.132 – 10.0.140.133	10.0.140.133
68	10.0.140.134/31	10.0.140.134 – 10.0.140.135	10.0.140.135
69	10.0.140.136/31	10.0.140.136 – 10.0.140.137	10.0.140.137
70	10.0.140.138/31	10.0.140.138 – 10.0.140.139	10.0.140.139
71	10.0.140.140/31	10.0.140.140 – 10.0.140.141	10.0.140.141
72	10.0.140.142/31	10.0.140.142 – 10.0.140.143	10.0.140.143
73	10.0.140.144/31	10.0.140.144 – 10.0.140.145	10.0.140.145
74	10.0.140.146/31	10.0.140.146 – 10.0.140.147	10.0.140.147
75	10.0.140.148/31	10.0.140.148 – 10.0.140.149	10.0.140.149
76	10.0.140.150/31	10.0.140.150 – 10.0.140.151	10.0.140.151
77	10.0.140.152/31	10.0.140.152 – 10.0.140.153	10.0.140.153
78	10.0.140.154/31	10.0.140.154 – 10.0.140.155	10.0.140.155
79	10.0.140.156/31	10.0.140.156 – 10.0.140.157	10.0.140.157
80	10.0.140.158/31	10.0.140.158 – 10.0.140.159	10.0.140.159
81	10.0.140.160/31	10.0.140.160 – 10.0.140.161	10.0.140.161
82	10.0.140.162/31	10.0.140.162 – 10.0.140.163	10.0.140.163
83	10.0.140.164/31	10.0.140.164 – 10.0.140.165	10.0.140.165
84	10.0.140.166/31	10.0.140.166 – 10.0.140.167	10.0.140.167
85	10.0.140.168/31	10.0.140.168 – 10.0.140.169	10.0.140.169
86	10.0.140.170/31	10.0.140.170 – 10.0.140.171	10.0.140.171
87	10.0.140.172/31	10.0.140.172 – 10.0.140.173	10.0.140.173
88	10.0.140.174/31	10.0.140.174 – 10.0.140.175	10.0.140.175
89	10.0.140.176/31	10.0.140.176 – 10.0.140.177	10.0.140.177
90	10.0.140.178/31	10.0.140.178 – 10.0.140.179	10.0.140.179
91	10.0.140.180/31	10.0.140.180 – 10.0.140.181	10.0.140.181
92	10.0.140.182/31	10.0.140.182 – 10.0.140.183	10.0.140.183
93	10.0.140.184/31	10.0.140.184 – 10.0.140.185	10.0.140.185
94	10.0.140.186/31	10.0.140.186 – 10.0.140.187	10.0.140.187
95	10.0.140.188/31	10.0.140.188 – 10.0.140.189	10.0.140.189
96	10.0.140.190/31	10.0.140.190 – 10.0.140.191	10.0.140.191
97	10.0.140.192/31	10.0.140.192 – 10.0.140.193	10.0.140.193
98	10.0.140.194/31	10.0.140.194 – 10.0.140.195	10.0.140.195
99	10.0.140.196/31	10.0.140.196 – 10.0.140.197	10.0.140.197
100	10.0.140.198/31	10.0.140.198 – 10.0.140.199	10.0.140.199
101	10.0.140.200/31	10.0.140.200 – 10.0.140.201	10.0.140.201
102	10.0.140.202/31	10.0.140.202 – 10.0.140.203	10.0.140.203
103	10.0.140.204/31	10.0.140.204 – 10.0.140.205	10.0.140.205
104	10.0.140.206/31	10.0.140.206 – 10.0.140.207	10.0.140.207
105	10.0.140.208/31	10.0.140.208 – 10.0.140.209	10.0.140.209
106	10.0.140.210/31	10.0.140.210 – 10.0.140.211	10.0.140.211
107	10.0.140.212/31	10.0.140.212 – 10.0.140.213	10.0.140.213
108	10.0.140.214/31	10.0.140.214 – 10.0.140.215	10.0.140.215
109	10.0.140.216/31	10.0.140.216 – 10.0.140.217	10.0.140.217
110	10.0.140.218/31	10.0.140.218 – 10.0.140.219	10.0.140.219
111	10.0.140.220/31	10.0.140.220 – 10.0.140.221	10.0.140.221
112	10.0.140.222/31	10.0.140.222 – 10.0.140.223	10.0.140.223
113	10.0.140.224/31	10.0.140.224 – 10.0.140.225	10.0.140.225
114	10.0.140.226/31	10.0.140.226 – 10.0.140.227	10.0.140.227
115	10.0.140.228/31	10.0.140.228 – 10.0.140.229	10.0.140.229
116	10.0.140.230/31	10.0.140.230 – 10.0.140.231	10.0.140.231
117	10.0.140.232/31	10.0.140.232 – 10.0.140.233	10.0.140.233
118	10.0.140.234/31	10.0.140.234 – 10.0.140.235	10.0.140.235
119	10.0.140.236/31	10.0.140.236 – 10.0.140.237	10.0.140.237
120	10.0.140.238/31	10.0.140.238 – 10.0.140.239	10.0.140.239
121	10.0.140.240/31	10.0.140.240 – 10.0.140.241	10.0.140.241
122	10.0.140.242/31	10.0.140.242 – 10.0.140.243	10.0.140.243
123	10.0.140.244/31	10.0.140.244 – 10.0.140.245	10.0.140.245
124	10.0.140.246/31	10.0.140.246 – 10.0.140.247	10.0.140.247
125	10.0.140.248/31	10.0.140.248 – 10.0.140.249	10.0.140.249
126	10.0.140.250/31	10.0.140.250 – 10.0.140.251	10.0.140.251
127	10.0.140.252/31	10.0.140.252 – 10.0.140.253	10.0.140.253
128	10.0.140.254/31	10.0.140.254 – 10.0.140.255	10.0.140.255
129	10.0.141.0/31	10.0.141.0 – 10.0.141.1	10.0.141.1
130	10.0.141.2/31	10.0.141.2 – 10.0.141.3	10.0.141.3
131	10.0.141.4/31	10.0.141.4 – 10.0.141.5	10.0.141.5
132	10.0.141.6/31	10.0.141.6 – 10.0.141.7	10.0.141.7
133	10.0.141.8/31	10.0.141.8 – 10.0.141.9	10.0.141.9
134	10.0.141.10/31	10.0.141.10 – 10.0.141.11	10.0.141.11
135	10.0.141.12/31	10.0.141.12 – 10.0.141.13	10.0.141.13
136	10.0.141.14/31	10.0.141.14 – 10.0.141.15	10.0.141.15
137	10.0.141.16/31	10.0.141.16 – 10.0.141.17	10.0.141.17
138	10.0.141.18/31	10.0.141.18 – 10.0.141.19	10.0.141.19
139	10.0.141.20/31	10.0.141.20 – 10.0.141.21	10.0.141.21
140	10.0.141.22/31	10.0.141.22 – 10.0.141.23	10.0.141.23
141	10.0.141.24/31	10.0.141.24 – 10.0.141.25	10.0.141.25
142	10.0.141.26/31	10.0.141.26 – 10.0.141.27	10.0.141.27
143	10.0.141.28/31	10.0.141.28 – 10.0.141.29	10.0.141.29
144	10.0.141.30/31	10.0.141.30 – 10.0.141.31	10.0.141.31
145	10.0.141.32/31	10.0.141.32 – 10.0.141.33	10.0.141.33
146	10.0.141.34/31	10.0.141.34 – 10.0.141.35	10.0.141.35
147	10.0.141.36/31	10.0.141.36 – 10.0.141.37	10.0.141.37
148	10.0.141.38/31	10.0.141.38 – 10.0.141.39	10.0.141.39
149	10.0.141.40/31	10.0.141.40 – 10.0.141.41	10.0.141.41
150	10.0.141.42/31	10.0.141.42 – 10.0.141.43	10.0.141.43
151	10.0.141.44/31	10.0.141.44 – 10.0.141.45	10.0.141.45
152	10.0.141.46/31	10.0.141.46 – 10.0.141.47	10.0.141.47
153	10.0.141.48/31	10.0.141.48 – 10.0.141.49	10.0.141.49
154	10.0.141.50/31	10.0.141.50 – 10.0.141.51	10.0.141.51
155	10.0.141.52/31	10.0.141.52 – 10.0.141.53	10.0.141.53
156	10.0.141.54/31	10.0.141.54 – 10.0.141.55	10.0.141.55
157	10.0.141.56/31	10.0.141.56 – 10.0.141.57	10.0.141.57
158	10.0.141.58/31	10.0.141.58 – 10.0.141.59	10.0.141.59
159	10.0.141.60/31	10.0.141.60 – 10.0.141.61	10.0.141.61
160	10.0.141.62/31	10.0.141.62 – 10.0.141.63	10.0.141.63
161	10.0.141.64/31	10.0.141.64 – 10.0.141.65	10.0.141.65
162	10.0.141.66/31	10.0.141.66 – 10.0.141.67	10.0.141.67
163	10.0.141.68/31	10.0.141.68 – 10.0.141.69	10.0.141.69
164	10.0.141.70/31	10.0.141.70 – 10.0.141.71	10.0.141.71
165	10.0.141.72/31	10.0.141.72 – 10.0.141.73	10.0.141.73
166	10.0.141.74/31	10.0.141.74 – 10.0.141.75	10.0.141.75
167	10.0.141.76/31	10.0.141.76 – 10.0.141.77	10.0.141.77
168	10.0.141.78/31	10.0.141.78 – 10.0.141.79	10.0.141.79
169	10.0.141.80/31	10.0.141.80 – 10.0.141.81	10.0.141.81
170	10.0.141.82/31	10.0.141.82 – 10.0.141.83	10.0.141.83
171	10.0.141.84/31	10.0.141.84 – 10.0.141.85	10.0.141.85
172	10.0.141.86/31	10.0.141.86 – 10.0.141.87	10.0.141.87
173	10.0.141.88/31	10.0.141.88 – 10.0.141.89	10.0.141.89
174	10.0.141.90/31	10.0.141.90 – 10.0.141.91	10.0.141.91
175	10.0.141.92/31	10.0.141.92 – 10.0.141.93	10.0.141.93
176	10.0.141.94/31	10.0.141.94 – 10.0.141.95	10.0.141.95
177	10.0.141.96/31	10.0.141.96 – 10.0.141.97	10.0.141.97
178	10.0.141.98/31	10.0.141.98 – 10.0.141.99	10.0.141.99
179	10.0.141.100/31	10.0.141.100 – 10.0.141.101	10.0.141.101
180	10.0.141.102/31	10.0.141.102 – 10.0.141.103	10.0.141.103
181	10.0.141.104/31	10.0.141.104 – 10.0.141.105	10.0.141.105
182	10.0.141.106/31	10.0.141.106 – 10.0.141.107	10.0.141.107
183	10.0.141.108/31	10.0.141.108 – 10.0.141.109	10.0.141.109
184	10.0.141.110/31	10.0.141.110 – 10.0.141.111	10.0.141.111
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186	10.0.141.114/31	10.0.141.114 – 10.0.141.115	10.0.141.115
187	10.0.141.116/31	10.0.141.116 – 10.0.141.117	10.0.141.117
188	10.0.141.118/31	10.0.141.118 – 10.0.141.119	10.0.141.119
189	10.0.141.120/31	10.0.141.120 – 10.0.141.121	10.0.141.121
190	10.0.141.122/31	10.0.141.122 – 10.0.141.123	10.0.141.123
191	10.0.141.124/31	10.0.141.124 – 10.0.141.125	10.0.141.125
192	10.0.141.126/31	10.0.141.126 – 10.0.141.127	10.0.141.127
193	10.0.141.128/31	10.0.141.128 – 10.0.141.129	10.0.141.129
194	10.0.141.130/31	10.0.141.130 – 10.0.141.131	10.0.141.131
195	10.0.141.132/31	10.0.141.132 – 10.0.141.133	10.0.141.133
196	10.0.141.134/31	10.0.141.134 – 10.0.141.135	10.0.141.135
197	10.0.141.136/31	10.0.141.136 – 10.0.141.137	10.0.141.137
198	10.0.141.138/31	10.0.141.138 – 10.0.141.139	10.0.141.139
199	10.0.141.140/31	10.0.141.140 – 10.0.141.141	10.0.141.141
200	10.0.141.142/31	10.0.141.142 – 10.0.141.143	10.0.141.143
201	10.0.141.144/31	10.0.141.144 – 10.0.141.145	10.0.141.145
202	10.0.141.146/31	10.0.141.146 – 10.0.141.147	10.0.141.147
203	10.0.141.148/31	10.0.141.148 – 10.0.141.149	10.0.141.149
204	10.0.141.150/31	10.0.141.150 – 10.0.141.151	10.0.141.151
205	10.0.141.152/31	10.0.141.152 – 10.0.141.153	10.0.141.153
206	10.0.141.154/31	10.0.141.154 – 10.0.141.155	10.0.141.155
207	10.0.141.156/31	10.0.141.156 – 10.0.141.157	10.0.141.157
208	10.0.141.158/31	10.0.141.158 – 10.0.141.159	10.0.141.159
209	10.0.141.160/31	10.0.141.160 – 10.0.141.161	10.0.141.161
210	10.0.141.162/31	10.0.141.162 – 10.0.141.163	10.0.141.163
211	10.0.141.164/31	10.0.141.164 – 10.0.141.165	10.0.141.165
212	10.0.141.166/31	10.0.141.166 – 10.0.141.167	10.0.141.167
213	10.0.141.168/31	10.0.141.168 – 10.0.141.169	10.0.141.169
214	10.0.141.170/31	10.0.141.170 – 10.0.141.171	10.0.141.171
215	10.0.141.172/31	10.0.141.172 – 10.0.141.173	10.0.141.173
216	10.0.141.174/31	10.0.141.174 – 10.0.141.175	10.0.141.175
217	10.0.141.176/31	10.0.141.176 – 10.0.141.177	10.0.141.177
218	10.0.141.178/31	10.0.141.178 – 10.0.141.179	10.0.141.179
219	10.0.141.180/31	10.0.141.180 – 10.0.141.181	10.0.141.181
220	10.0.141.182/31	10.0.141.182 – 10.0.141.183	10.0.141.183
221	10.0.141.184/31	10.0.141.184 – 10.0.141.185	10.0.141.185
222	10.0.141.186/31	10.0.141.186 – 10.0.141.187	10.0.141.187
223	10.0.141.188/31	10.0.141.188 – 10.0.141.189	10.0.141.189
224	10.0.141.190/31	10.0.141.190 – 10.0.141.191	10.0.141.191
225	10.0.141.192/31	10.0.141.192 – 10.0.141.193	10.0.141.193
226	10.0.141.194/31	10.0.141.194 – 10.0.141.195	10.0.141.195
227	10.0.141.196/31	10.0.141.196 – 10.0.141.197	10.0.141.197
228	10.0.141.198/31	10.0.141.198 – 10.0.141.199	10.0.141.199
229	10.0.141.200/31	10.0.141.200 – 10.0.141.201	10.0.141.201
230	10.0.141.202/31	10.0.141.202 – 10.0.141.203	10.0.141.203
231	10.0.141.204/31	10.0.141.204 – 10.0.141.205	10.0.141.205
232	10.0.141.206/31	10.0.141.206 – 10.0.141.207	10.0.141.207
233	10.0.141.208/31	10.0.141.208 – 10.0.141.209	10.0.141.209
234	10.0.141.210/31	10.0.141.210 – 10.0.141.211	10.0.141.211
235	10.0.141.212/31	10.0.141.212 – 10.0.141.213	10.0.141.213
236	10.0.141.214/31	10.0.141.214 – 10.0.141.215	10.0.141.215
237	10.0.141.216/31	10.0.141.216 – 10.0.141.217	10.0.141.217
238	10.0.141.218/31	10.0.141.218 – 10.0.141.219	10.0.141.219
239	10.0.141.220/31	10.0.141.220 – 10.0.141.221	10.0.141.221
240	10.0.141.222/31	10.0.141.222 – 10.0.141.223	10.0.141.223
241	10.0.141.224/31	10.0.141.224 – 10.0.141.225	10.0.141.225
242	10.0.141.226/31	10.0.141.226 – 10.0.141.227	10.0.141.227
243	10.0.141.228/31	10.0.141.228 – 10.0.141.229	10.0.141.229
244	10.0.141.230/31	10.0.141.230 – 10.0.141.231	10.0.141.231
245	10.0.141.232/31	10.0.141.232 – 10.0.141.233	10.0.141.233
246	10.0.141.234/31	10.0.141.234 – 10.0.141.235	10.0.141.235
247	10.0.141.236/31	10.0.141.236 – 10.0.141.237	10.0.141.237
248	10.0.141.238/31	10.0.141.238 – 10.0.141.239	10.0.141.239
249	10.0.141.240/31	10.0.141.240 – 10.0.141.241	10.0.141.241
250	10.0.141.242/31	10.0.141.242 – 10.0.141.243	10.0.141.243
251	10.0.141.244/31	10.0.141.244 – 10.0.141.245	10.0.141.245
252	10.0.141.246/31	10.0.141.246 – 10.0.141.247	10.0.141.247
253	10.0.141.248/31	10.0.141.248 – 10.0.141.249	10.0.141.249
254	10.0.141.250/31	10.0.141.250 – 10.0.141.251	10.0.141.251
255	10.0.141.252/31	10.0.141.252 – 10.0.141.253	10.0.141.253
256	10.0.141.254/31	10.0.141.254 – 10.0.141.255	10.0.141.255

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 /22
/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	1
/23	255.255.254.0	512	510	2 split →
/24	255.255.255.0	256	254	4 split →
/25	255.255.255.128	128	126	8 split →
/26	255.255.255.192	64	62	16 split →
/27	255.255.255.224	32	30	32 split →
/28	255.255.255.240	16	14	64 split →
/29	255.255.255.248	8	6	128 split →
/30	255.255.255.252	4	2	256 split →
/31	255.255.255.254	2	2	512 split →
/32	255.255.255.255	1	1	1,024 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 →