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)10.3.94.0/23

network10.3.94.0/23

broadcast10.3.95.255

first host10.3.94.1

last host10.3.95.254

subnet mask255.255.254.0

wildcard0.0.1.255

addresses512

usable hosts510

classA

ipcalc 10.3.94.0/23

address00001010.00000011.01011110.00000000

subnet mask11111111.11111111.11111110.00000000

network00001010.00000011.01011110.00000000

broadcast00001010.00000011.01011111.11111111

green = network part, grey = host part

hex0x0a035e00

decimal167992832

reverse dns0.94.3.10.in-addr.arpa

ipv4-mapped::ffff:a03:5e00

/23 split into /31 · 256 subnets

close ×

#	network	host range	broadcast
1	10.3.94.0/31	10.3.94.0 – 10.3.94.1	10.3.94.1
2	10.3.94.2/31	10.3.94.2 – 10.3.94.3	10.3.94.3
3	10.3.94.4/31	10.3.94.4 – 10.3.94.5	10.3.94.5
4	10.3.94.6/31	10.3.94.6 – 10.3.94.7	10.3.94.7
5	10.3.94.8/31	10.3.94.8 – 10.3.94.9	10.3.94.9
6	10.3.94.10/31	10.3.94.10 – 10.3.94.11	10.3.94.11
7	10.3.94.12/31	10.3.94.12 – 10.3.94.13	10.3.94.13
8	10.3.94.14/31	10.3.94.14 – 10.3.94.15	10.3.94.15
9	10.3.94.16/31	10.3.94.16 – 10.3.94.17	10.3.94.17
10	10.3.94.18/31	10.3.94.18 – 10.3.94.19	10.3.94.19
11	10.3.94.20/31	10.3.94.20 – 10.3.94.21	10.3.94.21
12	10.3.94.22/31	10.3.94.22 – 10.3.94.23	10.3.94.23
13	10.3.94.24/31	10.3.94.24 – 10.3.94.25	10.3.94.25
14	10.3.94.26/31	10.3.94.26 – 10.3.94.27	10.3.94.27
15	10.3.94.28/31	10.3.94.28 – 10.3.94.29	10.3.94.29
16	10.3.94.30/31	10.3.94.30 – 10.3.94.31	10.3.94.31
17	10.3.94.32/31	10.3.94.32 – 10.3.94.33	10.3.94.33
18	10.3.94.34/31	10.3.94.34 – 10.3.94.35	10.3.94.35
19	10.3.94.36/31	10.3.94.36 – 10.3.94.37	10.3.94.37
20	10.3.94.38/31	10.3.94.38 – 10.3.94.39	10.3.94.39
21	10.3.94.40/31	10.3.94.40 – 10.3.94.41	10.3.94.41
22	10.3.94.42/31	10.3.94.42 – 10.3.94.43	10.3.94.43
23	10.3.94.44/31	10.3.94.44 – 10.3.94.45	10.3.94.45
24	10.3.94.46/31	10.3.94.46 – 10.3.94.47	10.3.94.47
25	10.3.94.48/31	10.3.94.48 – 10.3.94.49	10.3.94.49
26	10.3.94.50/31	10.3.94.50 – 10.3.94.51	10.3.94.51
27	10.3.94.52/31	10.3.94.52 – 10.3.94.53	10.3.94.53
28	10.3.94.54/31	10.3.94.54 – 10.3.94.55	10.3.94.55
29	10.3.94.56/31	10.3.94.56 – 10.3.94.57	10.3.94.57
30	10.3.94.58/31	10.3.94.58 – 10.3.94.59	10.3.94.59
31	10.3.94.60/31	10.3.94.60 – 10.3.94.61	10.3.94.61
32	10.3.94.62/31	10.3.94.62 – 10.3.94.63	10.3.94.63
33	10.3.94.64/31	10.3.94.64 – 10.3.94.65	10.3.94.65
34	10.3.94.66/31	10.3.94.66 – 10.3.94.67	10.3.94.67
35	10.3.94.68/31	10.3.94.68 – 10.3.94.69	10.3.94.69
36	10.3.94.70/31	10.3.94.70 – 10.3.94.71	10.3.94.71
37	10.3.94.72/31	10.3.94.72 – 10.3.94.73	10.3.94.73
38	10.3.94.74/31	10.3.94.74 – 10.3.94.75	10.3.94.75
39	10.3.94.76/31	10.3.94.76 – 10.3.94.77	10.3.94.77
40	10.3.94.78/31	10.3.94.78 – 10.3.94.79	10.3.94.79
41	10.3.94.80/31	10.3.94.80 – 10.3.94.81	10.3.94.81
42	10.3.94.82/31	10.3.94.82 – 10.3.94.83	10.3.94.83
43	10.3.94.84/31	10.3.94.84 – 10.3.94.85	10.3.94.85
44	10.3.94.86/31	10.3.94.86 – 10.3.94.87	10.3.94.87
45	10.3.94.88/31	10.3.94.88 – 10.3.94.89	10.3.94.89
46	10.3.94.90/31	10.3.94.90 – 10.3.94.91	10.3.94.91
47	10.3.94.92/31	10.3.94.92 – 10.3.94.93	10.3.94.93
48	10.3.94.94/31	10.3.94.94 – 10.3.94.95	10.3.94.95
49	10.3.94.96/31	10.3.94.96 – 10.3.94.97	10.3.94.97
50	10.3.94.98/31	10.3.94.98 – 10.3.94.99	10.3.94.99
51	10.3.94.100/31	10.3.94.100 – 10.3.94.101	10.3.94.101
52	10.3.94.102/31	10.3.94.102 – 10.3.94.103	10.3.94.103
53	10.3.94.104/31	10.3.94.104 – 10.3.94.105	10.3.94.105
54	10.3.94.106/31	10.3.94.106 – 10.3.94.107	10.3.94.107
55	10.3.94.108/31	10.3.94.108 – 10.3.94.109	10.3.94.109
56	10.3.94.110/31	10.3.94.110 – 10.3.94.111	10.3.94.111
57	10.3.94.112/31	10.3.94.112 – 10.3.94.113	10.3.94.113
58	10.3.94.114/31	10.3.94.114 – 10.3.94.115	10.3.94.115
59	10.3.94.116/31	10.3.94.116 – 10.3.94.117	10.3.94.117
60	10.3.94.118/31	10.3.94.118 – 10.3.94.119	10.3.94.119
61	10.3.94.120/31	10.3.94.120 – 10.3.94.121	10.3.94.121
62	10.3.94.122/31	10.3.94.122 – 10.3.94.123	10.3.94.123
63	10.3.94.124/31	10.3.94.124 – 10.3.94.125	10.3.94.125
64	10.3.94.126/31	10.3.94.126 – 10.3.94.127	10.3.94.127
65	10.3.94.128/31	10.3.94.128 – 10.3.94.129	10.3.94.129
66	10.3.94.130/31	10.3.94.130 – 10.3.94.131	10.3.94.131
67	10.3.94.132/31	10.3.94.132 – 10.3.94.133	10.3.94.133
68	10.3.94.134/31	10.3.94.134 – 10.3.94.135	10.3.94.135
69	10.3.94.136/31	10.3.94.136 – 10.3.94.137	10.3.94.137
70	10.3.94.138/31	10.3.94.138 – 10.3.94.139	10.3.94.139
71	10.3.94.140/31	10.3.94.140 – 10.3.94.141	10.3.94.141
72	10.3.94.142/31	10.3.94.142 – 10.3.94.143	10.3.94.143
73	10.3.94.144/31	10.3.94.144 – 10.3.94.145	10.3.94.145
74	10.3.94.146/31	10.3.94.146 – 10.3.94.147	10.3.94.147
75	10.3.94.148/31	10.3.94.148 – 10.3.94.149	10.3.94.149
76	10.3.94.150/31	10.3.94.150 – 10.3.94.151	10.3.94.151
77	10.3.94.152/31	10.3.94.152 – 10.3.94.153	10.3.94.153
78	10.3.94.154/31	10.3.94.154 – 10.3.94.155	10.3.94.155
79	10.3.94.156/31	10.3.94.156 – 10.3.94.157	10.3.94.157
80	10.3.94.158/31	10.3.94.158 – 10.3.94.159	10.3.94.159
81	10.3.94.160/31	10.3.94.160 – 10.3.94.161	10.3.94.161
82	10.3.94.162/31	10.3.94.162 – 10.3.94.163	10.3.94.163
83	10.3.94.164/31	10.3.94.164 – 10.3.94.165	10.3.94.165
84	10.3.94.166/31	10.3.94.166 – 10.3.94.167	10.3.94.167
85	10.3.94.168/31	10.3.94.168 – 10.3.94.169	10.3.94.169
86	10.3.94.170/31	10.3.94.170 – 10.3.94.171	10.3.94.171
87	10.3.94.172/31	10.3.94.172 – 10.3.94.173	10.3.94.173
88	10.3.94.174/31	10.3.94.174 – 10.3.94.175	10.3.94.175
89	10.3.94.176/31	10.3.94.176 – 10.3.94.177	10.3.94.177
90	10.3.94.178/31	10.3.94.178 – 10.3.94.179	10.3.94.179
91	10.3.94.180/31	10.3.94.180 – 10.3.94.181	10.3.94.181
92	10.3.94.182/31	10.3.94.182 – 10.3.94.183	10.3.94.183
93	10.3.94.184/31	10.3.94.184 – 10.3.94.185	10.3.94.185
94	10.3.94.186/31	10.3.94.186 – 10.3.94.187	10.3.94.187
95	10.3.94.188/31	10.3.94.188 – 10.3.94.189	10.3.94.189
96	10.3.94.190/31	10.3.94.190 – 10.3.94.191	10.3.94.191
97	10.3.94.192/31	10.3.94.192 – 10.3.94.193	10.3.94.193
98	10.3.94.194/31	10.3.94.194 – 10.3.94.195	10.3.94.195
99	10.3.94.196/31	10.3.94.196 – 10.3.94.197	10.3.94.197
100	10.3.94.198/31	10.3.94.198 – 10.3.94.199	10.3.94.199
101	10.3.94.200/31	10.3.94.200 – 10.3.94.201	10.3.94.201
102	10.3.94.202/31	10.3.94.202 – 10.3.94.203	10.3.94.203
103	10.3.94.204/31	10.3.94.204 – 10.3.94.205	10.3.94.205
104	10.3.94.206/31	10.3.94.206 – 10.3.94.207	10.3.94.207
105	10.3.94.208/31	10.3.94.208 – 10.3.94.209	10.3.94.209
106	10.3.94.210/31	10.3.94.210 – 10.3.94.211	10.3.94.211
107	10.3.94.212/31	10.3.94.212 – 10.3.94.213	10.3.94.213
108	10.3.94.214/31	10.3.94.214 – 10.3.94.215	10.3.94.215
109	10.3.94.216/31	10.3.94.216 – 10.3.94.217	10.3.94.217
110	10.3.94.218/31	10.3.94.218 – 10.3.94.219	10.3.94.219
111	10.3.94.220/31	10.3.94.220 – 10.3.94.221	10.3.94.221
112	10.3.94.222/31	10.3.94.222 – 10.3.94.223	10.3.94.223
113	10.3.94.224/31	10.3.94.224 – 10.3.94.225	10.3.94.225
114	10.3.94.226/31	10.3.94.226 – 10.3.94.227	10.3.94.227
115	10.3.94.228/31	10.3.94.228 – 10.3.94.229	10.3.94.229
116	10.3.94.230/31	10.3.94.230 – 10.3.94.231	10.3.94.231
117	10.3.94.232/31	10.3.94.232 – 10.3.94.233	10.3.94.233
118	10.3.94.234/31	10.3.94.234 – 10.3.94.235	10.3.94.235
119	10.3.94.236/31	10.3.94.236 – 10.3.94.237	10.3.94.237
120	10.3.94.238/31	10.3.94.238 – 10.3.94.239	10.3.94.239
121	10.3.94.240/31	10.3.94.240 – 10.3.94.241	10.3.94.241
122	10.3.94.242/31	10.3.94.242 – 10.3.94.243	10.3.94.243
123	10.3.94.244/31	10.3.94.244 – 10.3.94.245	10.3.94.245
124	10.3.94.246/31	10.3.94.246 – 10.3.94.247	10.3.94.247
125	10.3.94.248/31	10.3.94.248 – 10.3.94.249	10.3.94.249
126	10.3.94.250/31	10.3.94.250 – 10.3.94.251	10.3.94.251
127	10.3.94.252/31	10.3.94.252 – 10.3.94.253	10.3.94.253
128	10.3.94.254/31	10.3.94.254 – 10.3.94.255	10.3.94.255
129	10.3.95.0/31	10.3.95.0 – 10.3.95.1	10.3.95.1
130	10.3.95.2/31	10.3.95.2 – 10.3.95.3	10.3.95.3
131	10.3.95.4/31	10.3.95.4 – 10.3.95.5	10.3.95.5
132	10.3.95.6/31	10.3.95.6 – 10.3.95.7	10.3.95.7
133	10.3.95.8/31	10.3.95.8 – 10.3.95.9	10.3.95.9
134	10.3.95.10/31	10.3.95.10 – 10.3.95.11	10.3.95.11
135	10.3.95.12/31	10.3.95.12 – 10.3.95.13	10.3.95.13
136	10.3.95.14/31	10.3.95.14 – 10.3.95.15	10.3.95.15
137	10.3.95.16/31	10.3.95.16 – 10.3.95.17	10.3.95.17
138	10.3.95.18/31	10.3.95.18 – 10.3.95.19	10.3.95.19
139	10.3.95.20/31	10.3.95.20 – 10.3.95.21	10.3.95.21
140	10.3.95.22/31	10.3.95.22 – 10.3.95.23	10.3.95.23
141	10.3.95.24/31	10.3.95.24 – 10.3.95.25	10.3.95.25
142	10.3.95.26/31	10.3.95.26 – 10.3.95.27	10.3.95.27
143	10.3.95.28/31	10.3.95.28 – 10.3.95.29	10.3.95.29
144	10.3.95.30/31	10.3.95.30 – 10.3.95.31	10.3.95.31
145	10.3.95.32/31	10.3.95.32 – 10.3.95.33	10.3.95.33
146	10.3.95.34/31	10.3.95.34 – 10.3.95.35	10.3.95.35
147	10.3.95.36/31	10.3.95.36 – 10.3.95.37	10.3.95.37
148	10.3.95.38/31	10.3.95.38 – 10.3.95.39	10.3.95.39
149	10.3.95.40/31	10.3.95.40 – 10.3.95.41	10.3.95.41
150	10.3.95.42/31	10.3.95.42 – 10.3.95.43	10.3.95.43
151	10.3.95.44/31	10.3.95.44 – 10.3.95.45	10.3.95.45
152	10.3.95.46/31	10.3.95.46 – 10.3.95.47	10.3.95.47
153	10.3.95.48/31	10.3.95.48 – 10.3.95.49	10.3.95.49
154	10.3.95.50/31	10.3.95.50 – 10.3.95.51	10.3.95.51
155	10.3.95.52/31	10.3.95.52 – 10.3.95.53	10.3.95.53
156	10.3.95.54/31	10.3.95.54 – 10.3.95.55	10.3.95.55
157	10.3.95.56/31	10.3.95.56 – 10.3.95.57	10.3.95.57
158	10.3.95.58/31	10.3.95.58 – 10.3.95.59	10.3.95.59
159	10.3.95.60/31	10.3.95.60 – 10.3.95.61	10.3.95.61
160	10.3.95.62/31	10.3.95.62 – 10.3.95.63	10.3.95.63
161	10.3.95.64/31	10.3.95.64 – 10.3.95.65	10.3.95.65
162	10.3.95.66/31	10.3.95.66 – 10.3.95.67	10.3.95.67
163	10.3.95.68/31	10.3.95.68 – 10.3.95.69	10.3.95.69
164	10.3.95.70/31	10.3.95.70 – 10.3.95.71	10.3.95.71
165	10.3.95.72/31	10.3.95.72 – 10.3.95.73	10.3.95.73
166	10.3.95.74/31	10.3.95.74 – 10.3.95.75	10.3.95.75
167	10.3.95.76/31	10.3.95.76 – 10.3.95.77	10.3.95.77
168	10.3.95.78/31	10.3.95.78 – 10.3.95.79	10.3.95.79
169	10.3.95.80/31	10.3.95.80 – 10.3.95.81	10.3.95.81
170	10.3.95.82/31	10.3.95.82 – 10.3.95.83	10.3.95.83
171	10.3.95.84/31	10.3.95.84 – 10.3.95.85	10.3.95.85
172	10.3.95.86/31	10.3.95.86 – 10.3.95.87	10.3.95.87
173	10.3.95.88/31	10.3.95.88 – 10.3.95.89	10.3.95.89
174	10.3.95.90/31	10.3.95.90 – 10.3.95.91	10.3.95.91
175	10.3.95.92/31	10.3.95.92 – 10.3.95.93	10.3.95.93
176	10.3.95.94/31	10.3.95.94 – 10.3.95.95	10.3.95.95
177	10.3.95.96/31	10.3.95.96 – 10.3.95.97	10.3.95.97
178	10.3.95.98/31	10.3.95.98 – 10.3.95.99	10.3.95.99
179	10.3.95.100/31	10.3.95.100 – 10.3.95.101	10.3.95.101
180	10.3.95.102/31	10.3.95.102 – 10.3.95.103	10.3.95.103
181	10.3.95.104/31	10.3.95.104 – 10.3.95.105	10.3.95.105
182	10.3.95.106/31	10.3.95.106 – 10.3.95.107	10.3.95.107
183	10.3.95.108/31	10.3.95.108 – 10.3.95.109	10.3.95.109
184	10.3.95.110/31	10.3.95.110 – 10.3.95.111	10.3.95.111
185	10.3.95.112/31	10.3.95.112 – 10.3.95.113	10.3.95.113
186	10.3.95.114/31	10.3.95.114 – 10.3.95.115	10.3.95.115
187	10.3.95.116/31	10.3.95.116 – 10.3.95.117	10.3.95.117
188	10.3.95.118/31	10.3.95.118 – 10.3.95.119	10.3.95.119
189	10.3.95.120/31	10.3.95.120 – 10.3.95.121	10.3.95.121
190	10.3.95.122/31	10.3.95.122 – 10.3.95.123	10.3.95.123
191	10.3.95.124/31	10.3.95.124 – 10.3.95.125	10.3.95.125
192	10.3.95.126/31	10.3.95.126 – 10.3.95.127	10.3.95.127
193	10.3.95.128/31	10.3.95.128 – 10.3.95.129	10.3.95.129
194	10.3.95.130/31	10.3.95.130 – 10.3.95.131	10.3.95.131
195	10.3.95.132/31	10.3.95.132 – 10.3.95.133	10.3.95.133
196	10.3.95.134/31	10.3.95.134 – 10.3.95.135	10.3.95.135
197	10.3.95.136/31	10.3.95.136 – 10.3.95.137	10.3.95.137
198	10.3.95.138/31	10.3.95.138 – 10.3.95.139	10.3.95.139
199	10.3.95.140/31	10.3.95.140 – 10.3.95.141	10.3.95.141
200	10.3.95.142/31	10.3.95.142 – 10.3.95.143	10.3.95.143
201	10.3.95.144/31	10.3.95.144 – 10.3.95.145	10.3.95.145
202	10.3.95.146/31	10.3.95.146 – 10.3.95.147	10.3.95.147
203	10.3.95.148/31	10.3.95.148 – 10.3.95.149	10.3.95.149
204	10.3.95.150/31	10.3.95.150 – 10.3.95.151	10.3.95.151
205	10.3.95.152/31	10.3.95.152 – 10.3.95.153	10.3.95.153
206	10.3.95.154/31	10.3.95.154 – 10.3.95.155	10.3.95.155
207	10.3.95.156/31	10.3.95.156 – 10.3.95.157	10.3.95.157
208	10.3.95.158/31	10.3.95.158 – 10.3.95.159	10.3.95.159
209	10.3.95.160/31	10.3.95.160 – 10.3.95.161	10.3.95.161
210	10.3.95.162/31	10.3.95.162 – 10.3.95.163	10.3.95.163
211	10.3.95.164/31	10.3.95.164 – 10.3.95.165	10.3.95.165
212	10.3.95.166/31	10.3.95.166 – 10.3.95.167	10.3.95.167
213	10.3.95.168/31	10.3.95.168 – 10.3.95.169	10.3.95.169
214	10.3.95.170/31	10.3.95.170 – 10.3.95.171	10.3.95.171
215	10.3.95.172/31	10.3.95.172 – 10.3.95.173	10.3.95.173
216	10.3.95.174/31	10.3.95.174 – 10.3.95.175	10.3.95.175
217	10.3.95.176/31	10.3.95.176 – 10.3.95.177	10.3.95.177
218	10.3.95.178/31	10.3.95.178 – 10.3.95.179	10.3.95.179
219	10.3.95.180/31	10.3.95.180 – 10.3.95.181	10.3.95.181
220	10.3.95.182/31	10.3.95.182 – 10.3.95.183	10.3.95.183
221	10.3.95.184/31	10.3.95.184 – 10.3.95.185	10.3.95.185
222	10.3.95.186/31	10.3.95.186 – 10.3.95.187	10.3.95.187
223	10.3.95.188/31	10.3.95.188 – 10.3.95.189	10.3.95.189
224	10.3.95.190/31	10.3.95.190 – 10.3.95.191	10.3.95.191
225	10.3.95.192/31	10.3.95.192 – 10.3.95.193	10.3.95.193
226	10.3.95.194/31	10.3.95.194 – 10.3.95.195	10.3.95.195
227	10.3.95.196/31	10.3.95.196 – 10.3.95.197	10.3.95.197
228	10.3.95.198/31	10.3.95.198 – 10.3.95.199	10.3.95.199
229	10.3.95.200/31	10.3.95.200 – 10.3.95.201	10.3.95.201
230	10.3.95.202/31	10.3.95.202 – 10.3.95.203	10.3.95.203
231	10.3.95.204/31	10.3.95.204 – 10.3.95.205	10.3.95.205
232	10.3.95.206/31	10.3.95.206 – 10.3.95.207	10.3.95.207
233	10.3.95.208/31	10.3.95.208 – 10.3.95.209	10.3.95.209
234	10.3.95.210/31	10.3.95.210 – 10.3.95.211	10.3.95.211
235	10.3.95.212/31	10.3.95.212 – 10.3.95.213	10.3.95.213
236	10.3.95.214/31	10.3.95.214 – 10.3.95.215	10.3.95.215
237	10.3.95.216/31	10.3.95.216 – 10.3.95.217	10.3.95.217
238	10.3.95.218/31	10.3.95.218 – 10.3.95.219	10.3.95.219
239	10.3.95.220/31	10.3.95.220 – 10.3.95.221	10.3.95.221
240	10.3.95.222/31	10.3.95.222 – 10.3.95.223	10.3.95.223
241	10.3.95.224/31	10.3.95.224 – 10.3.95.225	10.3.95.225
242	10.3.95.226/31	10.3.95.226 – 10.3.95.227	10.3.95.227
243	10.3.95.228/31	10.3.95.228 – 10.3.95.229	10.3.95.229
244	10.3.95.230/31	10.3.95.230 – 10.3.95.231	10.3.95.231
245	10.3.95.232/31	10.3.95.232 – 10.3.95.233	10.3.95.233
246	10.3.95.234/31	10.3.95.234 – 10.3.95.235	10.3.95.235
247	10.3.95.236/31	10.3.95.236 – 10.3.95.237	10.3.95.237
248	10.3.95.238/31	10.3.95.238 – 10.3.95.239	10.3.95.239
249	10.3.95.240/31	10.3.95.240 – 10.3.95.241	10.3.95.241
250	10.3.95.242/31	10.3.95.242 – 10.3.95.243	10.3.95.243
251	10.3.95.244/31	10.3.95.244 – 10.3.95.245	10.3.95.245
252	10.3.95.246/31	10.3.95.246 – 10.3.95.247	10.3.95.247
253	10.3.95.248/31	10.3.95.248 – 10.3.95.249	10.3.95.249
254	10.3.95.250/31	10.3.95.250 – 10.3.95.251	10.3.95.251
255	10.3.95.252/31	10.3.95.252 – 10.3.95.253	10.3.95.253
256	10.3.95.254/31	10.3.95.254 – 10.3.95.255	10.3.95.255

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