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)10.78.244.0/22

network10.78.244.0/22

broadcast10.78.247.255

first host10.78.244.1

last host10.78.247.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.78.244.0/22

address00001010.01001110.11110100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.01001110.11110100.00000000

broadcast00001010.01001110.11110111.11111111

green = network part, grey = host part

hex0x0a4ef400

decimal172946432

reverse dns0.244.78.10.in-addr.arpa

ipv4-mapped::ffff:a4e:f400

/22 split into /31 · 512 subnets

close ×

#	network	host range	broadcast
1	10.78.244.0/31	10.78.244.0 – 10.78.244.1	10.78.244.1
2	10.78.244.2/31	10.78.244.2 – 10.78.244.3	10.78.244.3
3	10.78.244.4/31	10.78.244.4 – 10.78.244.5	10.78.244.5
4	10.78.244.6/31	10.78.244.6 – 10.78.244.7	10.78.244.7
5	10.78.244.8/31	10.78.244.8 – 10.78.244.9	10.78.244.9
6	10.78.244.10/31	10.78.244.10 – 10.78.244.11	10.78.244.11
7	10.78.244.12/31	10.78.244.12 – 10.78.244.13	10.78.244.13
8	10.78.244.14/31	10.78.244.14 – 10.78.244.15	10.78.244.15
9	10.78.244.16/31	10.78.244.16 – 10.78.244.17	10.78.244.17
10	10.78.244.18/31	10.78.244.18 – 10.78.244.19	10.78.244.19
11	10.78.244.20/31	10.78.244.20 – 10.78.244.21	10.78.244.21
12	10.78.244.22/31	10.78.244.22 – 10.78.244.23	10.78.244.23
13	10.78.244.24/31	10.78.244.24 – 10.78.244.25	10.78.244.25
14	10.78.244.26/31	10.78.244.26 – 10.78.244.27	10.78.244.27
15	10.78.244.28/31	10.78.244.28 – 10.78.244.29	10.78.244.29
16	10.78.244.30/31	10.78.244.30 – 10.78.244.31	10.78.244.31
17	10.78.244.32/31	10.78.244.32 – 10.78.244.33	10.78.244.33
18	10.78.244.34/31	10.78.244.34 – 10.78.244.35	10.78.244.35
19	10.78.244.36/31	10.78.244.36 – 10.78.244.37	10.78.244.37
20	10.78.244.38/31	10.78.244.38 – 10.78.244.39	10.78.244.39
21	10.78.244.40/31	10.78.244.40 – 10.78.244.41	10.78.244.41
22	10.78.244.42/31	10.78.244.42 – 10.78.244.43	10.78.244.43
23	10.78.244.44/31	10.78.244.44 – 10.78.244.45	10.78.244.45
24	10.78.244.46/31	10.78.244.46 – 10.78.244.47	10.78.244.47
25	10.78.244.48/31	10.78.244.48 – 10.78.244.49	10.78.244.49
26	10.78.244.50/31	10.78.244.50 – 10.78.244.51	10.78.244.51
27	10.78.244.52/31	10.78.244.52 – 10.78.244.53	10.78.244.53
28	10.78.244.54/31	10.78.244.54 – 10.78.244.55	10.78.244.55
29	10.78.244.56/31	10.78.244.56 – 10.78.244.57	10.78.244.57
30	10.78.244.58/31	10.78.244.58 – 10.78.244.59	10.78.244.59
31	10.78.244.60/31	10.78.244.60 – 10.78.244.61	10.78.244.61
32	10.78.244.62/31	10.78.244.62 – 10.78.244.63	10.78.244.63
33	10.78.244.64/31	10.78.244.64 – 10.78.244.65	10.78.244.65
34	10.78.244.66/31	10.78.244.66 – 10.78.244.67	10.78.244.67
35	10.78.244.68/31	10.78.244.68 – 10.78.244.69	10.78.244.69
36	10.78.244.70/31	10.78.244.70 – 10.78.244.71	10.78.244.71
37	10.78.244.72/31	10.78.244.72 – 10.78.244.73	10.78.244.73
38	10.78.244.74/31	10.78.244.74 – 10.78.244.75	10.78.244.75
39	10.78.244.76/31	10.78.244.76 – 10.78.244.77	10.78.244.77
40	10.78.244.78/31	10.78.244.78 – 10.78.244.79	10.78.244.79
41	10.78.244.80/31	10.78.244.80 – 10.78.244.81	10.78.244.81
42	10.78.244.82/31	10.78.244.82 – 10.78.244.83	10.78.244.83
43	10.78.244.84/31	10.78.244.84 – 10.78.244.85	10.78.244.85
44	10.78.244.86/31	10.78.244.86 – 10.78.244.87	10.78.244.87
45	10.78.244.88/31	10.78.244.88 – 10.78.244.89	10.78.244.89
46	10.78.244.90/31	10.78.244.90 – 10.78.244.91	10.78.244.91
47	10.78.244.92/31	10.78.244.92 – 10.78.244.93	10.78.244.93
48	10.78.244.94/31	10.78.244.94 – 10.78.244.95	10.78.244.95
49	10.78.244.96/31	10.78.244.96 – 10.78.244.97	10.78.244.97
50	10.78.244.98/31	10.78.244.98 – 10.78.244.99	10.78.244.99
51	10.78.244.100/31	10.78.244.100 – 10.78.244.101	10.78.244.101
52	10.78.244.102/31	10.78.244.102 – 10.78.244.103	10.78.244.103
53	10.78.244.104/31	10.78.244.104 – 10.78.244.105	10.78.244.105
54	10.78.244.106/31	10.78.244.106 – 10.78.244.107	10.78.244.107
55	10.78.244.108/31	10.78.244.108 – 10.78.244.109	10.78.244.109
56	10.78.244.110/31	10.78.244.110 – 10.78.244.111	10.78.244.111
57	10.78.244.112/31	10.78.244.112 – 10.78.244.113	10.78.244.113
58	10.78.244.114/31	10.78.244.114 – 10.78.244.115	10.78.244.115
59	10.78.244.116/31	10.78.244.116 – 10.78.244.117	10.78.244.117
60	10.78.244.118/31	10.78.244.118 – 10.78.244.119	10.78.244.119
61	10.78.244.120/31	10.78.244.120 – 10.78.244.121	10.78.244.121
62	10.78.244.122/31	10.78.244.122 – 10.78.244.123	10.78.244.123
63	10.78.244.124/31	10.78.244.124 – 10.78.244.125	10.78.244.125
64	10.78.244.126/31	10.78.244.126 – 10.78.244.127	10.78.244.127
65	10.78.244.128/31	10.78.244.128 – 10.78.244.129	10.78.244.129
66	10.78.244.130/31	10.78.244.130 – 10.78.244.131	10.78.244.131
67	10.78.244.132/31	10.78.244.132 – 10.78.244.133	10.78.244.133
68	10.78.244.134/31	10.78.244.134 – 10.78.244.135	10.78.244.135
69	10.78.244.136/31	10.78.244.136 – 10.78.244.137	10.78.244.137
70	10.78.244.138/31	10.78.244.138 – 10.78.244.139	10.78.244.139
71	10.78.244.140/31	10.78.244.140 – 10.78.244.141	10.78.244.141
72	10.78.244.142/31	10.78.244.142 – 10.78.244.143	10.78.244.143
73	10.78.244.144/31	10.78.244.144 – 10.78.244.145	10.78.244.145
74	10.78.244.146/31	10.78.244.146 – 10.78.244.147	10.78.244.147
75	10.78.244.148/31	10.78.244.148 – 10.78.244.149	10.78.244.149
76	10.78.244.150/31	10.78.244.150 – 10.78.244.151	10.78.244.151
77	10.78.244.152/31	10.78.244.152 – 10.78.244.153	10.78.244.153
78	10.78.244.154/31	10.78.244.154 – 10.78.244.155	10.78.244.155
79	10.78.244.156/31	10.78.244.156 – 10.78.244.157	10.78.244.157
80	10.78.244.158/31	10.78.244.158 – 10.78.244.159	10.78.244.159
81	10.78.244.160/31	10.78.244.160 – 10.78.244.161	10.78.244.161
82	10.78.244.162/31	10.78.244.162 – 10.78.244.163	10.78.244.163
83	10.78.244.164/31	10.78.244.164 – 10.78.244.165	10.78.244.165
84	10.78.244.166/31	10.78.244.166 – 10.78.244.167	10.78.244.167
85	10.78.244.168/31	10.78.244.168 – 10.78.244.169	10.78.244.169
86	10.78.244.170/31	10.78.244.170 – 10.78.244.171	10.78.244.171
87	10.78.244.172/31	10.78.244.172 – 10.78.244.173	10.78.244.173
88	10.78.244.174/31	10.78.244.174 – 10.78.244.175	10.78.244.175
89	10.78.244.176/31	10.78.244.176 – 10.78.244.177	10.78.244.177
90	10.78.244.178/31	10.78.244.178 – 10.78.244.179	10.78.244.179
91	10.78.244.180/31	10.78.244.180 – 10.78.244.181	10.78.244.181
92	10.78.244.182/31	10.78.244.182 – 10.78.244.183	10.78.244.183
93	10.78.244.184/31	10.78.244.184 – 10.78.244.185	10.78.244.185
94	10.78.244.186/31	10.78.244.186 – 10.78.244.187	10.78.244.187
95	10.78.244.188/31	10.78.244.188 – 10.78.244.189	10.78.244.189
96	10.78.244.190/31	10.78.244.190 – 10.78.244.191	10.78.244.191
97	10.78.244.192/31	10.78.244.192 – 10.78.244.193	10.78.244.193
98	10.78.244.194/31	10.78.244.194 – 10.78.244.195	10.78.244.195
99	10.78.244.196/31	10.78.244.196 – 10.78.244.197	10.78.244.197
100	10.78.244.198/31	10.78.244.198 – 10.78.244.199	10.78.244.199
101	10.78.244.200/31	10.78.244.200 – 10.78.244.201	10.78.244.201
102	10.78.244.202/31	10.78.244.202 – 10.78.244.203	10.78.244.203
103	10.78.244.204/31	10.78.244.204 – 10.78.244.205	10.78.244.205
104	10.78.244.206/31	10.78.244.206 – 10.78.244.207	10.78.244.207
105	10.78.244.208/31	10.78.244.208 – 10.78.244.209	10.78.244.209
106	10.78.244.210/31	10.78.244.210 – 10.78.244.211	10.78.244.211
107	10.78.244.212/31	10.78.244.212 – 10.78.244.213	10.78.244.213
108	10.78.244.214/31	10.78.244.214 – 10.78.244.215	10.78.244.215
109	10.78.244.216/31	10.78.244.216 – 10.78.244.217	10.78.244.217
110	10.78.244.218/31	10.78.244.218 – 10.78.244.219	10.78.244.219
111	10.78.244.220/31	10.78.244.220 – 10.78.244.221	10.78.244.221
112	10.78.244.222/31	10.78.244.222 – 10.78.244.223	10.78.244.223
113	10.78.244.224/31	10.78.244.224 – 10.78.244.225	10.78.244.225
114	10.78.244.226/31	10.78.244.226 – 10.78.244.227	10.78.244.227
115	10.78.244.228/31	10.78.244.228 – 10.78.244.229	10.78.244.229
116	10.78.244.230/31	10.78.244.230 – 10.78.244.231	10.78.244.231
117	10.78.244.232/31	10.78.244.232 – 10.78.244.233	10.78.244.233
118	10.78.244.234/31	10.78.244.234 – 10.78.244.235	10.78.244.235
119	10.78.244.236/31	10.78.244.236 – 10.78.244.237	10.78.244.237
120	10.78.244.238/31	10.78.244.238 – 10.78.244.239	10.78.244.239
121	10.78.244.240/31	10.78.244.240 – 10.78.244.241	10.78.244.241
122	10.78.244.242/31	10.78.244.242 – 10.78.244.243	10.78.244.243
123	10.78.244.244/31	10.78.244.244 – 10.78.244.245	10.78.244.245
124	10.78.244.246/31	10.78.244.246 – 10.78.244.247	10.78.244.247
125	10.78.244.248/31	10.78.244.248 – 10.78.244.249	10.78.244.249
126	10.78.244.250/31	10.78.244.250 – 10.78.244.251	10.78.244.251
127	10.78.244.252/31	10.78.244.252 – 10.78.244.253	10.78.244.253
128	10.78.244.254/31	10.78.244.254 – 10.78.244.255	10.78.244.255
129	10.78.245.0/31	10.78.245.0 – 10.78.245.1	10.78.245.1
130	10.78.245.2/31	10.78.245.2 – 10.78.245.3	10.78.245.3
131	10.78.245.4/31	10.78.245.4 – 10.78.245.5	10.78.245.5
132	10.78.245.6/31	10.78.245.6 – 10.78.245.7	10.78.245.7
133	10.78.245.8/31	10.78.245.8 – 10.78.245.9	10.78.245.9
134	10.78.245.10/31	10.78.245.10 – 10.78.245.11	10.78.245.11
135	10.78.245.12/31	10.78.245.12 – 10.78.245.13	10.78.245.13
136	10.78.245.14/31	10.78.245.14 – 10.78.245.15	10.78.245.15
137	10.78.245.16/31	10.78.245.16 – 10.78.245.17	10.78.245.17
138	10.78.245.18/31	10.78.245.18 – 10.78.245.19	10.78.245.19
139	10.78.245.20/31	10.78.245.20 – 10.78.245.21	10.78.245.21
140	10.78.245.22/31	10.78.245.22 – 10.78.245.23	10.78.245.23
141	10.78.245.24/31	10.78.245.24 – 10.78.245.25	10.78.245.25
142	10.78.245.26/31	10.78.245.26 – 10.78.245.27	10.78.245.27
143	10.78.245.28/31	10.78.245.28 – 10.78.245.29	10.78.245.29
144	10.78.245.30/31	10.78.245.30 – 10.78.245.31	10.78.245.31
145	10.78.245.32/31	10.78.245.32 – 10.78.245.33	10.78.245.33
146	10.78.245.34/31	10.78.245.34 – 10.78.245.35	10.78.245.35
147	10.78.245.36/31	10.78.245.36 – 10.78.245.37	10.78.245.37
148	10.78.245.38/31	10.78.245.38 – 10.78.245.39	10.78.245.39
149	10.78.245.40/31	10.78.245.40 – 10.78.245.41	10.78.245.41
150	10.78.245.42/31	10.78.245.42 – 10.78.245.43	10.78.245.43
151	10.78.245.44/31	10.78.245.44 – 10.78.245.45	10.78.245.45
152	10.78.245.46/31	10.78.245.46 – 10.78.245.47	10.78.245.47
153	10.78.245.48/31	10.78.245.48 – 10.78.245.49	10.78.245.49
154	10.78.245.50/31	10.78.245.50 – 10.78.245.51	10.78.245.51
155	10.78.245.52/31	10.78.245.52 – 10.78.245.53	10.78.245.53
156	10.78.245.54/31	10.78.245.54 – 10.78.245.55	10.78.245.55
157	10.78.245.56/31	10.78.245.56 – 10.78.245.57	10.78.245.57
158	10.78.245.58/31	10.78.245.58 – 10.78.245.59	10.78.245.59
159	10.78.245.60/31	10.78.245.60 – 10.78.245.61	10.78.245.61
160	10.78.245.62/31	10.78.245.62 – 10.78.245.63	10.78.245.63
161	10.78.245.64/31	10.78.245.64 – 10.78.245.65	10.78.245.65
162	10.78.245.66/31	10.78.245.66 – 10.78.245.67	10.78.245.67
163	10.78.245.68/31	10.78.245.68 – 10.78.245.69	10.78.245.69
164	10.78.245.70/31	10.78.245.70 – 10.78.245.71	10.78.245.71
165	10.78.245.72/31	10.78.245.72 – 10.78.245.73	10.78.245.73
166	10.78.245.74/31	10.78.245.74 – 10.78.245.75	10.78.245.75
167	10.78.245.76/31	10.78.245.76 – 10.78.245.77	10.78.245.77
168	10.78.245.78/31	10.78.245.78 – 10.78.245.79	10.78.245.79
169	10.78.245.80/31	10.78.245.80 – 10.78.245.81	10.78.245.81
170	10.78.245.82/31	10.78.245.82 – 10.78.245.83	10.78.245.83
171	10.78.245.84/31	10.78.245.84 – 10.78.245.85	10.78.245.85
172	10.78.245.86/31	10.78.245.86 – 10.78.245.87	10.78.245.87
173	10.78.245.88/31	10.78.245.88 – 10.78.245.89	10.78.245.89
174	10.78.245.90/31	10.78.245.90 – 10.78.245.91	10.78.245.91
175	10.78.245.92/31	10.78.245.92 – 10.78.245.93	10.78.245.93
176	10.78.245.94/31	10.78.245.94 – 10.78.245.95	10.78.245.95
177	10.78.245.96/31	10.78.245.96 – 10.78.245.97	10.78.245.97
178	10.78.245.98/31	10.78.245.98 – 10.78.245.99	10.78.245.99
179	10.78.245.100/31	10.78.245.100 – 10.78.245.101	10.78.245.101
180	10.78.245.102/31	10.78.245.102 – 10.78.245.103	10.78.245.103
181	10.78.245.104/31	10.78.245.104 – 10.78.245.105	10.78.245.105
182	10.78.245.106/31	10.78.245.106 – 10.78.245.107	10.78.245.107
183	10.78.245.108/31	10.78.245.108 – 10.78.245.109	10.78.245.109
184	10.78.245.110/31	10.78.245.110 – 10.78.245.111	10.78.245.111
185	10.78.245.112/31	10.78.245.112 – 10.78.245.113	10.78.245.113
186	10.78.245.114/31	10.78.245.114 – 10.78.245.115	10.78.245.115
187	10.78.245.116/31	10.78.245.116 – 10.78.245.117	10.78.245.117
188	10.78.245.118/31	10.78.245.118 – 10.78.245.119	10.78.245.119
189	10.78.245.120/31	10.78.245.120 – 10.78.245.121	10.78.245.121
190	10.78.245.122/31	10.78.245.122 – 10.78.245.123	10.78.245.123
191	10.78.245.124/31	10.78.245.124 – 10.78.245.125	10.78.245.125
192	10.78.245.126/31	10.78.245.126 – 10.78.245.127	10.78.245.127
193	10.78.245.128/31	10.78.245.128 – 10.78.245.129	10.78.245.129
194	10.78.245.130/31	10.78.245.130 – 10.78.245.131	10.78.245.131
195	10.78.245.132/31	10.78.245.132 – 10.78.245.133	10.78.245.133
196	10.78.245.134/31	10.78.245.134 – 10.78.245.135	10.78.245.135
197	10.78.245.136/31	10.78.245.136 – 10.78.245.137	10.78.245.137
198	10.78.245.138/31	10.78.245.138 – 10.78.245.139	10.78.245.139
199	10.78.245.140/31	10.78.245.140 – 10.78.245.141	10.78.245.141
200	10.78.245.142/31	10.78.245.142 – 10.78.245.143	10.78.245.143
201	10.78.245.144/31	10.78.245.144 – 10.78.245.145	10.78.245.145
202	10.78.245.146/31	10.78.245.146 – 10.78.245.147	10.78.245.147
203	10.78.245.148/31	10.78.245.148 – 10.78.245.149	10.78.245.149
204	10.78.245.150/31	10.78.245.150 – 10.78.245.151	10.78.245.151
205	10.78.245.152/31	10.78.245.152 – 10.78.245.153	10.78.245.153
206	10.78.245.154/31	10.78.245.154 – 10.78.245.155	10.78.245.155
207	10.78.245.156/31	10.78.245.156 – 10.78.245.157	10.78.245.157
208	10.78.245.158/31	10.78.245.158 – 10.78.245.159	10.78.245.159
209	10.78.245.160/31	10.78.245.160 – 10.78.245.161	10.78.245.161
210	10.78.245.162/31	10.78.245.162 – 10.78.245.163	10.78.245.163
211	10.78.245.164/31	10.78.245.164 – 10.78.245.165	10.78.245.165
212	10.78.245.166/31	10.78.245.166 – 10.78.245.167	10.78.245.167
213	10.78.245.168/31	10.78.245.168 – 10.78.245.169	10.78.245.169
214	10.78.245.170/31	10.78.245.170 – 10.78.245.171	10.78.245.171
215	10.78.245.172/31	10.78.245.172 – 10.78.245.173	10.78.245.173
216	10.78.245.174/31	10.78.245.174 – 10.78.245.175	10.78.245.175
217	10.78.245.176/31	10.78.245.176 – 10.78.245.177	10.78.245.177
218	10.78.245.178/31	10.78.245.178 – 10.78.245.179	10.78.245.179
219	10.78.245.180/31	10.78.245.180 – 10.78.245.181	10.78.245.181
220	10.78.245.182/31	10.78.245.182 – 10.78.245.183	10.78.245.183
221	10.78.245.184/31	10.78.245.184 – 10.78.245.185	10.78.245.185
222	10.78.245.186/31	10.78.245.186 – 10.78.245.187	10.78.245.187
223	10.78.245.188/31	10.78.245.188 – 10.78.245.189	10.78.245.189
224	10.78.245.190/31	10.78.245.190 – 10.78.245.191	10.78.245.191
225	10.78.245.192/31	10.78.245.192 – 10.78.245.193	10.78.245.193
226	10.78.245.194/31	10.78.245.194 – 10.78.245.195	10.78.245.195
227	10.78.245.196/31	10.78.245.196 – 10.78.245.197	10.78.245.197
228	10.78.245.198/31	10.78.245.198 – 10.78.245.199	10.78.245.199
229	10.78.245.200/31	10.78.245.200 – 10.78.245.201	10.78.245.201
230	10.78.245.202/31	10.78.245.202 – 10.78.245.203	10.78.245.203
231	10.78.245.204/31	10.78.245.204 – 10.78.245.205	10.78.245.205
232	10.78.245.206/31	10.78.245.206 – 10.78.245.207	10.78.245.207
233	10.78.245.208/31	10.78.245.208 – 10.78.245.209	10.78.245.209
234	10.78.245.210/31	10.78.245.210 – 10.78.245.211	10.78.245.211
235	10.78.245.212/31	10.78.245.212 – 10.78.245.213	10.78.245.213
236	10.78.245.214/31	10.78.245.214 – 10.78.245.215	10.78.245.215
237	10.78.245.216/31	10.78.245.216 – 10.78.245.217	10.78.245.217
238	10.78.245.218/31	10.78.245.218 – 10.78.245.219	10.78.245.219
239	10.78.245.220/31	10.78.245.220 – 10.78.245.221	10.78.245.221
240	10.78.245.222/31	10.78.245.222 – 10.78.245.223	10.78.245.223
241	10.78.245.224/31	10.78.245.224 – 10.78.245.225	10.78.245.225
242	10.78.245.226/31	10.78.245.226 – 10.78.245.227	10.78.245.227
243	10.78.245.228/31	10.78.245.228 – 10.78.245.229	10.78.245.229
244	10.78.245.230/31	10.78.245.230 – 10.78.245.231	10.78.245.231
245	10.78.245.232/31	10.78.245.232 – 10.78.245.233	10.78.245.233
246	10.78.245.234/31	10.78.245.234 – 10.78.245.235	10.78.245.235
247	10.78.245.236/31	10.78.245.236 – 10.78.245.237	10.78.245.237
248	10.78.245.238/31	10.78.245.238 – 10.78.245.239	10.78.245.239
249	10.78.245.240/31	10.78.245.240 – 10.78.245.241	10.78.245.241
250	10.78.245.242/31	10.78.245.242 – 10.78.245.243	10.78.245.243
251	10.78.245.244/31	10.78.245.244 – 10.78.245.245	10.78.245.245
252	10.78.245.246/31	10.78.245.246 – 10.78.245.247	10.78.245.247
253	10.78.245.248/31	10.78.245.248 – 10.78.245.249	10.78.245.249
254	10.78.245.250/31	10.78.245.250 – 10.78.245.251	10.78.245.251
255	10.78.245.252/31	10.78.245.252 – 10.78.245.253	10.78.245.253
256	10.78.245.254/31	10.78.245.254 – 10.78.245.255	10.78.245.255

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 →