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)10.78.200.0/22

network10.78.200.0/22

broadcast10.78.203.255

first host10.78.200.1

last host10.78.203.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.78.200.0/22

address00001010.01001110.11001000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.01001110.11001000.00000000

broadcast00001010.01001110.11001011.11111111

green = network part, grey = host part

hex0x0a4ec800

decimal172935168

reverse dns0.200.78.10.in-addr.arpa

ipv4-mapped::ffff:a4e:c800

/22 split into /31 · 512 subnets

close ×

#	network	host range	broadcast
1	10.78.200.0/31	10.78.200.0 – 10.78.200.1	10.78.200.1
2	10.78.200.2/31	10.78.200.2 – 10.78.200.3	10.78.200.3
3	10.78.200.4/31	10.78.200.4 – 10.78.200.5	10.78.200.5
4	10.78.200.6/31	10.78.200.6 – 10.78.200.7	10.78.200.7
5	10.78.200.8/31	10.78.200.8 – 10.78.200.9	10.78.200.9
6	10.78.200.10/31	10.78.200.10 – 10.78.200.11	10.78.200.11
7	10.78.200.12/31	10.78.200.12 – 10.78.200.13	10.78.200.13
8	10.78.200.14/31	10.78.200.14 – 10.78.200.15	10.78.200.15
9	10.78.200.16/31	10.78.200.16 – 10.78.200.17	10.78.200.17
10	10.78.200.18/31	10.78.200.18 – 10.78.200.19	10.78.200.19
11	10.78.200.20/31	10.78.200.20 – 10.78.200.21	10.78.200.21
12	10.78.200.22/31	10.78.200.22 – 10.78.200.23	10.78.200.23
13	10.78.200.24/31	10.78.200.24 – 10.78.200.25	10.78.200.25
14	10.78.200.26/31	10.78.200.26 – 10.78.200.27	10.78.200.27
15	10.78.200.28/31	10.78.200.28 – 10.78.200.29	10.78.200.29
16	10.78.200.30/31	10.78.200.30 – 10.78.200.31	10.78.200.31
17	10.78.200.32/31	10.78.200.32 – 10.78.200.33	10.78.200.33
18	10.78.200.34/31	10.78.200.34 – 10.78.200.35	10.78.200.35
19	10.78.200.36/31	10.78.200.36 – 10.78.200.37	10.78.200.37
20	10.78.200.38/31	10.78.200.38 – 10.78.200.39	10.78.200.39
21	10.78.200.40/31	10.78.200.40 – 10.78.200.41	10.78.200.41
22	10.78.200.42/31	10.78.200.42 – 10.78.200.43	10.78.200.43
23	10.78.200.44/31	10.78.200.44 – 10.78.200.45	10.78.200.45
24	10.78.200.46/31	10.78.200.46 – 10.78.200.47	10.78.200.47
25	10.78.200.48/31	10.78.200.48 – 10.78.200.49	10.78.200.49
26	10.78.200.50/31	10.78.200.50 – 10.78.200.51	10.78.200.51
27	10.78.200.52/31	10.78.200.52 – 10.78.200.53	10.78.200.53
28	10.78.200.54/31	10.78.200.54 – 10.78.200.55	10.78.200.55
29	10.78.200.56/31	10.78.200.56 – 10.78.200.57	10.78.200.57
30	10.78.200.58/31	10.78.200.58 – 10.78.200.59	10.78.200.59
31	10.78.200.60/31	10.78.200.60 – 10.78.200.61	10.78.200.61
32	10.78.200.62/31	10.78.200.62 – 10.78.200.63	10.78.200.63
33	10.78.200.64/31	10.78.200.64 – 10.78.200.65	10.78.200.65
34	10.78.200.66/31	10.78.200.66 – 10.78.200.67	10.78.200.67
35	10.78.200.68/31	10.78.200.68 – 10.78.200.69	10.78.200.69
36	10.78.200.70/31	10.78.200.70 – 10.78.200.71	10.78.200.71
37	10.78.200.72/31	10.78.200.72 – 10.78.200.73	10.78.200.73
38	10.78.200.74/31	10.78.200.74 – 10.78.200.75	10.78.200.75
39	10.78.200.76/31	10.78.200.76 – 10.78.200.77	10.78.200.77
40	10.78.200.78/31	10.78.200.78 – 10.78.200.79	10.78.200.79
41	10.78.200.80/31	10.78.200.80 – 10.78.200.81	10.78.200.81
42	10.78.200.82/31	10.78.200.82 – 10.78.200.83	10.78.200.83
43	10.78.200.84/31	10.78.200.84 – 10.78.200.85	10.78.200.85
44	10.78.200.86/31	10.78.200.86 – 10.78.200.87	10.78.200.87
45	10.78.200.88/31	10.78.200.88 – 10.78.200.89	10.78.200.89
46	10.78.200.90/31	10.78.200.90 – 10.78.200.91	10.78.200.91
47	10.78.200.92/31	10.78.200.92 – 10.78.200.93	10.78.200.93
48	10.78.200.94/31	10.78.200.94 – 10.78.200.95	10.78.200.95
49	10.78.200.96/31	10.78.200.96 – 10.78.200.97	10.78.200.97
50	10.78.200.98/31	10.78.200.98 – 10.78.200.99	10.78.200.99
51	10.78.200.100/31	10.78.200.100 – 10.78.200.101	10.78.200.101
52	10.78.200.102/31	10.78.200.102 – 10.78.200.103	10.78.200.103
53	10.78.200.104/31	10.78.200.104 – 10.78.200.105	10.78.200.105
54	10.78.200.106/31	10.78.200.106 – 10.78.200.107	10.78.200.107
55	10.78.200.108/31	10.78.200.108 – 10.78.200.109	10.78.200.109
56	10.78.200.110/31	10.78.200.110 – 10.78.200.111	10.78.200.111
57	10.78.200.112/31	10.78.200.112 – 10.78.200.113	10.78.200.113
58	10.78.200.114/31	10.78.200.114 – 10.78.200.115	10.78.200.115
59	10.78.200.116/31	10.78.200.116 – 10.78.200.117	10.78.200.117
60	10.78.200.118/31	10.78.200.118 – 10.78.200.119	10.78.200.119
61	10.78.200.120/31	10.78.200.120 – 10.78.200.121	10.78.200.121
62	10.78.200.122/31	10.78.200.122 – 10.78.200.123	10.78.200.123
63	10.78.200.124/31	10.78.200.124 – 10.78.200.125	10.78.200.125
64	10.78.200.126/31	10.78.200.126 – 10.78.200.127	10.78.200.127
65	10.78.200.128/31	10.78.200.128 – 10.78.200.129	10.78.200.129
66	10.78.200.130/31	10.78.200.130 – 10.78.200.131	10.78.200.131
67	10.78.200.132/31	10.78.200.132 – 10.78.200.133	10.78.200.133
68	10.78.200.134/31	10.78.200.134 – 10.78.200.135	10.78.200.135
69	10.78.200.136/31	10.78.200.136 – 10.78.200.137	10.78.200.137
70	10.78.200.138/31	10.78.200.138 – 10.78.200.139	10.78.200.139
71	10.78.200.140/31	10.78.200.140 – 10.78.200.141	10.78.200.141
72	10.78.200.142/31	10.78.200.142 – 10.78.200.143	10.78.200.143
73	10.78.200.144/31	10.78.200.144 – 10.78.200.145	10.78.200.145
74	10.78.200.146/31	10.78.200.146 – 10.78.200.147	10.78.200.147
75	10.78.200.148/31	10.78.200.148 – 10.78.200.149	10.78.200.149
76	10.78.200.150/31	10.78.200.150 – 10.78.200.151	10.78.200.151
77	10.78.200.152/31	10.78.200.152 – 10.78.200.153	10.78.200.153
78	10.78.200.154/31	10.78.200.154 – 10.78.200.155	10.78.200.155
79	10.78.200.156/31	10.78.200.156 – 10.78.200.157	10.78.200.157
80	10.78.200.158/31	10.78.200.158 – 10.78.200.159	10.78.200.159
81	10.78.200.160/31	10.78.200.160 – 10.78.200.161	10.78.200.161
82	10.78.200.162/31	10.78.200.162 – 10.78.200.163	10.78.200.163
83	10.78.200.164/31	10.78.200.164 – 10.78.200.165	10.78.200.165
84	10.78.200.166/31	10.78.200.166 – 10.78.200.167	10.78.200.167
85	10.78.200.168/31	10.78.200.168 – 10.78.200.169	10.78.200.169
86	10.78.200.170/31	10.78.200.170 – 10.78.200.171	10.78.200.171
87	10.78.200.172/31	10.78.200.172 – 10.78.200.173	10.78.200.173
88	10.78.200.174/31	10.78.200.174 – 10.78.200.175	10.78.200.175
89	10.78.200.176/31	10.78.200.176 – 10.78.200.177	10.78.200.177
90	10.78.200.178/31	10.78.200.178 – 10.78.200.179	10.78.200.179
91	10.78.200.180/31	10.78.200.180 – 10.78.200.181	10.78.200.181
92	10.78.200.182/31	10.78.200.182 – 10.78.200.183	10.78.200.183
93	10.78.200.184/31	10.78.200.184 – 10.78.200.185	10.78.200.185
94	10.78.200.186/31	10.78.200.186 – 10.78.200.187	10.78.200.187
95	10.78.200.188/31	10.78.200.188 – 10.78.200.189	10.78.200.189
96	10.78.200.190/31	10.78.200.190 – 10.78.200.191	10.78.200.191
97	10.78.200.192/31	10.78.200.192 – 10.78.200.193	10.78.200.193
98	10.78.200.194/31	10.78.200.194 – 10.78.200.195	10.78.200.195
99	10.78.200.196/31	10.78.200.196 – 10.78.200.197	10.78.200.197
100	10.78.200.198/31	10.78.200.198 – 10.78.200.199	10.78.200.199
101	10.78.200.200/31	10.78.200.200 – 10.78.200.201	10.78.200.201
102	10.78.200.202/31	10.78.200.202 – 10.78.200.203	10.78.200.203
103	10.78.200.204/31	10.78.200.204 – 10.78.200.205	10.78.200.205
104	10.78.200.206/31	10.78.200.206 – 10.78.200.207	10.78.200.207
105	10.78.200.208/31	10.78.200.208 – 10.78.200.209	10.78.200.209
106	10.78.200.210/31	10.78.200.210 – 10.78.200.211	10.78.200.211
107	10.78.200.212/31	10.78.200.212 – 10.78.200.213	10.78.200.213
108	10.78.200.214/31	10.78.200.214 – 10.78.200.215	10.78.200.215
109	10.78.200.216/31	10.78.200.216 – 10.78.200.217	10.78.200.217
110	10.78.200.218/31	10.78.200.218 – 10.78.200.219	10.78.200.219
111	10.78.200.220/31	10.78.200.220 – 10.78.200.221	10.78.200.221
112	10.78.200.222/31	10.78.200.222 – 10.78.200.223	10.78.200.223
113	10.78.200.224/31	10.78.200.224 – 10.78.200.225	10.78.200.225
114	10.78.200.226/31	10.78.200.226 – 10.78.200.227	10.78.200.227
115	10.78.200.228/31	10.78.200.228 – 10.78.200.229	10.78.200.229
116	10.78.200.230/31	10.78.200.230 – 10.78.200.231	10.78.200.231
117	10.78.200.232/31	10.78.200.232 – 10.78.200.233	10.78.200.233
118	10.78.200.234/31	10.78.200.234 – 10.78.200.235	10.78.200.235
119	10.78.200.236/31	10.78.200.236 – 10.78.200.237	10.78.200.237
120	10.78.200.238/31	10.78.200.238 – 10.78.200.239	10.78.200.239
121	10.78.200.240/31	10.78.200.240 – 10.78.200.241	10.78.200.241
122	10.78.200.242/31	10.78.200.242 – 10.78.200.243	10.78.200.243
123	10.78.200.244/31	10.78.200.244 – 10.78.200.245	10.78.200.245
124	10.78.200.246/31	10.78.200.246 – 10.78.200.247	10.78.200.247
125	10.78.200.248/31	10.78.200.248 – 10.78.200.249	10.78.200.249
126	10.78.200.250/31	10.78.200.250 – 10.78.200.251	10.78.200.251
127	10.78.200.252/31	10.78.200.252 – 10.78.200.253	10.78.200.253
128	10.78.200.254/31	10.78.200.254 – 10.78.200.255	10.78.200.255
129	10.78.201.0/31	10.78.201.0 – 10.78.201.1	10.78.201.1
130	10.78.201.2/31	10.78.201.2 – 10.78.201.3	10.78.201.3
131	10.78.201.4/31	10.78.201.4 – 10.78.201.5	10.78.201.5
132	10.78.201.6/31	10.78.201.6 – 10.78.201.7	10.78.201.7
133	10.78.201.8/31	10.78.201.8 – 10.78.201.9	10.78.201.9
134	10.78.201.10/31	10.78.201.10 – 10.78.201.11	10.78.201.11
135	10.78.201.12/31	10.78.201.12 – 10.78.201.13	10.78.201.13
136	10.78.201.14/31	10.78.201.14 – 10.78.201.15	10.78.201.15
137	10.78.201.16/31	10.78.201.16 – 10.78.201.17	10.78.201.17
138	10.78.201.18/31	10.78.201.18 – 10.78.201.19	10.78.201.19
139	10.78.201.20/31	10.78.201.20 – 10.78.201.21	10.78.201.21
140	10.78.201.22/31	10.78.201.22 – 10.78.201.23	10.78.201.23
141	10.78.201.24/31	10.78.201.24 – 10.78.201.25	10.78.201.25
142	10.78.201.26/31	10.78.201.26 – 10.78.201.27	10.78.201.27
143	10.78.201.28/31	10.78.201.28 – 10.78.201.29	10.78.201.29
144	10.78.201.30/31	10.78.201.30 – 10.78.201.31	10.78.201.31
145	10.78.201.32/31	10.78.201.32 – 10.78.201.33	10.78.201.33
146	10.78.201.34/31	10.78.201.34 – 10.78.201.35	10.78.201.35
147	10.78.201.36/31	10.78.201.36 – 10.78.201.37	10.78.201.37
148	10.78.201.38/31	10.78.201.38 – 10.78.201.39	10.78.201.39
149	10.78.201.40/31	10.78.201.40 – 10.78.201.41	10.78.201.41
150	10.78.201.42/31	10.78.201.42 – 10.78.201.43	10.78.201.43
151	10.78.201.44/31	10.78.201.44 – 10.78.201.45	10.78.201.45
152	10.78.201.46/31	10.78.201.46 – 10.78.201.47	10.78.201.47
153	10.78.201.48/31	10.78.201.48 – 10.78.201.49	10.78.201.49
154	10.78.201.50/31	10.78.201.50 – 10.78.201.51	10.78.201.51
155	10.78.201.52/31	10.78.201.52 – 10.78.201.53	10.78.201.53
156	10.78.201.54/31	10.78.201.54 – 10.78.201.55	10.78.201.55
157	10.78.201.56/31	10.78.201.56 – 10.78.201.57	10.78.201.57
158	10.78.201.58/31	10.78.201.58 – 10.78.201.59	10.78.201.59
159	10.78.201.60/31	10.78.201.60 – 10.78.201.61	10.78.201.61
160	10.78.201.62/31	10.78.201.62 – 10.78.201.63	10.78.201.63
161	10.78.201.64/31	10.78.201.64 – 10.78.201.65	10.78.201.65
162	10.78.201.66/31	10.78.201.66 – 10.78.201.67	10.78.201.67
163	10.78.201.68/31	10.78.201.68 – 10.78.201.69	10.78.201.69
164	10.78.201.70/31	10.78.201.70 – 10.78.201.71	10.78.201.71
165	10.78.201.72/31	10.78.201.72 – 10.78.201.73	10.78.201.73
166	10.78.201.74/31	10.78.201.74 – 10.78.201.75	10.78.201.75
167	10.78.201.76/31	10.78.201.76 – 10.78.201.77	10.78.201.77
168	10.78.201.78/31	10.78.201.78 – 10.78.201.79	10.78.201.79
169	10.78.201.80/31	10.78.201.80 – 10.78.201.81	10.78.201.81
170	10.78.201.82/31	10.78.201.82 – 10.78.201.83	10.78.201.83
171	10.78.201.84/31	10.78.201.84 – 10.78.201.85	10.78.201.85
172	10.78.201.86/31	10.78.201.86 – 10.78.201.87	10.78.201.87
173	10.78.201.88/31	10.78.201.88 – 10.78.201.89	10.78.201.89
174	10.78.201.90/31	10.78.201.90 – 10.78.201.91	10.78.201.91
175	10.78.201.92/31	10.78.201.92 – 10.78.201.93	10.78.201.93
176	10.78.201.94/31	10.78.201.94 – 10.78.201.95	10.78.201.95
177	10.78.201.96/31	10.78.201.96 – 10.78.201.97	10.78.201.97
178	10.78.201.98/31	10.78.201.98 – 10.78.201.99	10.78.201.99
179	10.78.201.100/31	10.78.201.100 – 10.78.201.101	10.78.201.101
180	10.78.201.102/31	10.78.201.102 – 10.78.201.103	10.78.201.103
181	10.78.201.104/31	10.78.201.104 – 10.78.201.105	10.78.201.105
182	10.78.201.106/31	10.78.201.106 – 10.78.201.107	10.78.201.107
183	10.78.201.108/31	10.78.201.108 – 10.78.201.109	10.78.201.109
184	10.78.201.110/31	10.78.201.110 – 10.78.201.111	10.78.201.111
185	10.78.201.112/31	10.78.201.112 – 10.78.201.113	10.78.201.113
186	10.78.201.114/31	10.78.201.114 – 10.78.201.115	10.78.201.115
187	10.78.201.116/31	10.78.201.116 – 10.78.201.117	10.78.201.117
188	10.78.201.118/31	10.78.201.118 – 10.78.201.119	10.78.201.119
189	10.78.201.120/31	10.78.201.120 – 10.78.201.121	10.78.201.121
190	10.78.201.122/31	10.78.201.122 – 10.78.201.123	10.78.201.123
191	10.78.201.124/31	10.78.201.124 – 10.78.201.125	10.78.201.125
192	10.78.201.126/31	10.78.201.126 – 10.78.201.127	10.78.201.127
193	10.78.201.128/31	10.78.201.128 – 10.78.201.129	10.78.201.129
194	10.78.201.130/31	10.78.201.130 – 10.78.201.131	10.78.201.131
195	10.78.201.132/31	10.78.201.132 – 10.78.201.133	10.78.201.133
196	10.78.201.134/31	10.78.201.134 – 10.78.201.135	10.78.201.135
197	10.78.201.136/31	10.78.201.136 – 10.78.201.137	10.78.201.137
198	10.78.201.138/31	10.78.201.138 – 10.78.201.139	10.78.201.139
199	10.78.201.140/31	10.78.201.140 – 10.78.201.141	10.78.201.141
200	10.78.201.142/31	10.78.201.142 – 10.78.201.143	10.78.201.143
201	10.78.201.144/31	10.78.201.144 – 10.78.201.145	10.78.201.145
202	10.78.201.146/31	10.78.201.146 – 10.78.201.147	10.78.201.147
203	10.78.201.148/31	10.78.201.148 – 10.78.201.149	10.78.201.149
204	10.78.201.150/31	10.78.201.150 – 10.78.201.151	10.78.201.151
205	10.78.201.152/31	10.78.201.152 – 10.78.201.153	10.78.201.153
206	10.78.201.154/31	10.78.201.154 – 10.78.201.155	10.78.201.155
207	10.78.201.156/31	10.78.201.156 – 10.78.201.157	10.78.201.157
208	10.78.201.158/31	10.78.201.158 – 10.78.201.159	10.78.201.159
209	10.78.201.160/31	10.78.201.160 – 10.78.201.161	10.78.201.161
210	10.78.201.162/31	10.78.201.162 – 10.78.201.163	10.78.201.163
211	10.78.201.164/31	10.78.201.164 – 10.78.201.165	10.78.201.165
212	10.78.201.166/31	10.78.201.166 – 10.78.201.167	10.78.201.167
213	10.78.201.168/31	10.78.201.168 – 10.78.201.169	10.78.201.169
214	10.78.201.170/31	10.78.201.170 – 10.78.201.171	10.78.201.171
215	10.78.201.172/31	10.78.201.172 – 10.78.201.173	10.78.201.173
216	10.78.201.174/31	10.78.201.174 – 10.78.201.175	10.78.201.175
217	10.78.201.176/31	10.78.201.176 – 10.78.201.177	10.78.201.177
218	10.78.201.178/31	10.78.201.178 – 10.78.201.179	10.78.201.179
219	10.78.201.180/31	10.78.201.180 – 10.78.201.181	10.78.201.181
220	10.78.201.182/31	10.78.201.182 – 10.78.201.183	10.78.201.183
221	10.78.201.184/31	10.78.201.184 – 10.78.201.185	10.78.201.185
222	10.78.201.186/31	10.78.201.186 – 10.78.201.187	10.78.201.187
223	10.78.201.188/31	10.78.201.188 – 10.78.201.189	10.78.201.189
224	10.78.201.190/31	10.78.201.190 – 10.78.201.191	10.78.201.191
225	10.78.201.192/31	10.78.201.192 – 10.78.201.193	10.78.201.193
226	10.78.201.194/31	10.78.201.194 – 10.78.201.195	10.78.201.195
227	10.78.201.196/31	10.78.201.196 – 10.78.201.197	10.78.201.197
228	10.78.201.198/31	10.78.201.198 – 10.78.201.199	10.78.201.199
229	10.78.201.200/31	10.78.201.200 – 10.78.201.201	10.78.201.201
230	10.78.201.202/31	10.78.201.202 – 10.78.201.203	10.78.201.203
231	10.78.201.204/31	10.78.201.204 – 10.78.201.205	10.78.201.205
232	10.78.201.206/31	10.78.201.206 – 10.78.201.207	10.78.201.207
233	10.78.201.208/31	10.78.201.208 – 10.78.201.209	10.78.201.209
234	10.78.201.210/31	10.78.201.210 – 10.78.201.211	10.78.201.211
235	10.78.201.212/31	10.78.201.212 – 10.78.201.213	10.78.201.213
236	10.78.201.214/31	10.78.201.214 – 10.78.201.215	10.78.201.215
237	10.78.201.216/31	10.78.201.216 – 10.78.201.217	10.78.201.217
238	10.78.201.218/31	10.78.201.218 – 10.78.201.219	10.78.201.219
239	10.78.201.220/31	10.78.201.220 – 10.78.201.221	10.78.201.221
240	10.78.201.222/31	10.78.201.222 – 10.78.201.223	10.78.201.223
241	10.78.201.224/31	10.78.201.224 – 10.78.201.225	10.78.201.225
242	10.78.201.226/31	10.78.201.226 – 10.78.201.227	10.78.201.227
243	10.78.201.228/31	10.78.201.228 – 10.78.201.229	10.78.201.229
244	10.78.201.230/31	10.78.201.230 – 10.78.201.231	10.78.201.231
245	10.78.201.232/31	10.78.201.232 – 10.78.201.233	10.78.201.233
246	10.78.201.234/31	10.78.201.234 – 10.78.201.235	10.78.201.235
247	10.78.201.236/31	10.78.201.236 – 10.78.201.237	10.78.201.237
248	10.78.201.238/31	10.78.201.238 – 10.78.201.239	10.78.201.239
249	10.78.201.240/31	10.78.201.240 – 10.78.201.241	10.78.201.241
250	10.78.201.242/31	10.78.201.242 – 10.78.201.243	10.78.201.243
251	10.78.201.244/31	10.78.201.244 – 10.78.201.245	10.78.201.245
252	10.78.201.246/31	10.78.201.246 – 10.78.201.247	10.78.201.247
253	10.78.201.248/31	10.78.201.248 – 10.78.201.249	10.78.201.249
254	10.78.201.250/31	10.78.201.250 – 10.78.201.251	10.78.201.251
255	10.78.201.252/31	10.78.201.252 – 10.78.201.253	10.78.201.253
256	10.78.201.254/31	10.78.201.254 – 10.78.201.255	10.78.201.255

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 →