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)10.167.114.0/23

network10.167.114.0/23

broadcast10.167.115.255

first host10.167.114.1

last host10.167.115.254

subnet mask255.255.254.0

wildcard0.0.1.255

addresses512

usable hosts510

classA

ipcalc 10.167.114.0/23

address00001010.10100111.01110010.00000000

subnet mask11111111.11111111.11111110.00000000

network00001010.10100111.01110010.00000000

broadcast00001010.10100111.01110011.11111111

green = network part, grey = host part

hex0x0aa77200

decimal178745856

reverse dns0.114.167.10.in-addr.arpa

ipv4-mapped::ffff:aa7:7200

/23 split into /31 · 256 subnets

close ×

#	network	host range	broadcast
1	10.167.114.0/31	10.167.114.0 – 10.167.114.1	10.167.114.1
2	10.167.114.2/31	10.167.114.2 – 10.167.114.3	10.167.114.3
3	10.167.114.4/31	10.167.114.4 – 10.167.114.5	10.167.114.5
4	10.167.114.6/31	10.167.114.6 – 10.167.114.7	10.167.114.7
5	10.167.114.8/31	10.167.114.8 – 10.167.114.9	10.167.114.9
6	10.167.114.10/31	10.167.114.10 – 10.167.114.11	10.167.114.11
7	10.167.114.12/31	10.167.114.12 – 10.167.114.13	10.167.114.13
8	10.167.114.14/31	10.167.114.14 – 10.167.114.15	10.167.114.15
9	10.167.114.16/31	10.167.114.16 – 10.167.114.17	10.167.114.17
10	10.167.114.18/31	10.167.114.18 – 10.167.114.19	10.167.114.19
11	10.167.114.20/31	10.167.114.20 – 10.167.114.21	10.167.114.21
12	10.167.114.22/31	10.167.114.22 – 10.167.114.23	10.167.114.23
13	10.167.114.24/31	10.167.114.24 – 10.167.114.25	10.167.114.25
14	10.167.114.26/31	10.167.114.26 – 10.167.114.27	10.167.114.27
15	10.167.114.28/31	10.167.114.28 – 10.167.114.29	10.167.114.29
16	10.167.114.30/31	10.167.114.30 – 10.167.114.31	10.167.114.31
17	10.167.114.32/31	10.167.114.32 – 10.167.114.33	10.167.114.33
18	10.167.114.34/31	10.167.114.34 – 10.167.114.35	10.167.114.35
19	10.167.114.36/31	10.167.114.36 – 10.167.114.37	10.167.114.37
20	10.167.114.38/31	10.167.114.38 – 10.167.114.39	10.167.114.39
21	10.167.114.40/31	10.167.114.40 – 10.167.114.41	10.167.114.41
22	10.167.114.42/31	10.167.114.42 – 10.167.114.43	10.167.114.43
23	10.167.114.44/31	10.167.114.44 – 10.167.114.45	10.167.114.45
24	10.167.114.46/31	10.167.114.46 – 10.167.114.47	10.167.114.47
25	10.167.114.48/31	10.167.114.48 – 10.167.114.49	10.167.114.49
26	10.167.114.50/31	10.167.114.50 – 10.167.114.51	10.167.114.51
27	10.167.114.52/31	10.167.114.52 – 10.167.114.53	10.167.114.53
28	10.167.114.54/31	10.167.114.54 – 10.167.114.55	10.167.114.55
29	10.167.114.56/31	10.167.114.56 – 10.167.114.57	10.167.114.57
30	10.167.114.58/31	10.167.114.58 – 10.167.114.59	10.167.114.59
31	10.167.114.60/31	10.167.114.60 – 10.167.114.61	10.167.114.61
32	10.167.114.62/31	10.167.114.62 – 10.167.114.63	10.167.114.63
33	10.167.114.64/31	10.167.114.64 – 10.167.114.65	10.167.114.65
34	10.167.114.66/31	10.167.114.66 – 10.167.114.67	10.167.114.67
35	10.167.114.68/31	10.167.114.68 – 10.167.114.69	10.167.114.69
36	10.167.114.70/31	10.167.114.70 – 10.167.114.71	10.167.114.71
37	10.167.114.72/31	10.167.114.72 – 10.167.114.73	10.167.114.73
38	10.167.114.74/31	10.167.114.74 – 10.167.114.75	10.167.114.75
39	10.167.114.76/31	10.167.114.76 – 10.167.114.77	10.167.114.77
40	10.167.114.78/31	10.167.114.78 – 10.167.114.79	10.167.114.79
41	10.167.114.80/31	10.167.114.80 – 10.167.114.81	10.167.114.81
42	10.167.114.82/31	10.167.114.82 – 10.167.114.83	10.167.114.83
43	10.167.114.84/31	10.167.114.84 – 10.167.114.85	10.167.114.85
44	10.167.114.86/31	10.167.114.86 – 10.167.114.87	10.167.114.87
45	10.167.114.88/31	10.167.114.88 – 10.167.114.89	10.167.114.89
46	10.167.114.90/31	10.167.114.90 – 10.167.114.91	10.167.114.91
47	10.167.114.92/31	10.167.114.92 – 10.167.114.93	10.167.114.93
48	10.167.114.94/31	10.167.114.94 – 10.167.114.95	10.167.114.95
49	10.167.114.96/31	10.167.114.96 – 10.167.114.97	10.167.114.97
50	10.167.114.98/31	10.167.114.98 – 10.167.114.99	10.167.114.99
51	10.167.114.100/31	10.167.114.100 – 10.167.114.101	10.167.114.101
52	10.167.114.102/31	10.167.114.102 – 10.167.114.103	10.167.114.103
53	10.167.114.104/31	10.167.114.104 – 10.167.114.105	10.167.114.105
54	10.167.114.106/31	10.167.114.106 – 10.167.114.107	10.167.114.107
55	10.167.114.108/31	10.167.114.108 – 10.167.114.109	10.167.114.109
56	10.167.114.110/31	10.167.114.110 – 10.167.114.111	10.167.114.111
57	10.167.114.112/31	10.167.114.112 – 10.167.114.113	10.167.114.113
58	10.167.114.114/31	10.167.114.114 – 10.167.114.115	10.167.114.115
59	10.167.114.116/31	10.167.114.116 – 10.167.114.117	10.167.114.117
60	10.167.114.118/31	10.167.114.118 – 10.167.114.119	10.167.114.119
61	10.167.114.120/31	10.167.114.120 – 10.167.114.121	10.167.114.121
62	10.167.114.122/31	10.167.114.122 – 10.167.114.123	10.167.114.123
63	10.167.114.124/31	10.167.114.124 – 10.167.114.125	10.167.114.125
64	10.167.114.126/31	10.167.114.126 – 10.167.114.127	10.167.114.127
65	10.167.114.128/31	10.167.114.128 – 10.167.114.129	10.167.114.129
66	10.167.114.130/31	10.167.114.130 – 10.167.114.131	10.167.114.131
67	10.167.114.132/31	10.167.114.132 – 10.167.114.133	10.167.114.133
68	10.167.114.134/31	10.167.114.134 – 10.167.114.135	10.167.114.135
69	10.167.114.136/31	10.167.114.136 – 10.167.114.137	10.167.114.137
70	10.167.114.138/31	10.167.114.138 – 10.167.114.139	10.167.114.139
71	10.167.114.140/31	10.167.114.140 – 10.167.114.141	10.167.114.141
72	10.167.114.142/31	10.167.114.142 – 10.167.114.143	10.167.114.143
73	10.167.114.144/31	10.167.114.144 – 10.167.114.145	10.167.114.145
74	10.167.114.146/31	10.167.114.146 – 10.167.114.147	10.167.114.147
75	10.167.114.148/31	10.167.114.148 – 10.167.114.149	10.167.114.149
76	10.167.114.150/31	10.167.114.150 – 10.167.114.151	10.167.114.151
77	10.167.114.152/31	10.167.114.152 – 10.167.114.153	10.167.114.153
78	10.167.114.154/31	10.167.114.154 – 10.167.114.155	10.167.114.155
79	10.167.114.156/31	10.167.114.156 – 10.167.114.157	10.167.114.157
80	10.167.114.158/31	10.167.114.158 – 10.167.114.159	10.167.114.159
81	10.167.114.160/31	10.167.114.160 – 10.167.114.161	10.167.114.161
82	10.167.114.162/31	10.167.114.162 – 10.167.114.163	10.167.114.163
83	10.167.114.164/31	10.167.114.164 – 10.167.114.165	10.167.114.165
84	10.167.114.166/31	10.167.114.166 – 10.167.114.167	10.167.114.167
85	10.167.114.168/31	10.167.114.168 – 10.167.114.169	10.167.114.169
86	10.167.114.170/31	10.167.114.170 – 10.167.114.171	10.167.114.171
87	10.167.114.172/31	10.167.114.172 – 10.167.114.173	10.167.114.173
88	10.167.114.174/31	10.167.114.174 – 10.167.114.175	10.167.114.175
89	10.167.114.176/31	10.167.114.176 – 10.167.114.177	10.167.114.177
90	10.167.114.178/31	10.167.114.178 – 10.167.114.179	10.167.114.179
91	10.167.114.180/31	10.167.114.180 – 10.167.114.181	10.167.114.181
92	10.167.114.182/31	10.167.114.182 – 10.167.114.183	10.167.114.183
93	10.167.114.184/31	10.167.114.184 – 10.167.114.185	10.167.114.185
94	10.167.114.186/31	10.167.114.186 – 10.167.114.187	10.167.114.187
95	10.167.114.188/31	10.167.114.188 – 10.167.114.189	10.167.114.189
96	10.167.114.190/31	10.167.114.190 – 10.167.114.191	10.167.114.191
97	10.167.114.192/31	10.167.114.192 – 10.167.114.193	10.167.114.193
98	10.167.114.194/31	10.167.114.194 – 10.167.114.195	10.167.114.195
99	10.167.114.196/31	10.167.114.196 – 10.167.114.197	10.167.114.197
100	10.167.114.198/31	10.167.114.198 – 10.167.114.199	10.167.114.199
101	10.167.114.200/31	10.167.114.200 – 10.167.114.201	10.167.114.201
102	10.167.114.202/31	10.167.114.202 – 10.167.114.203	10.167.114.203
103	10.167.114.204/31	10.167.114.204 – 10.167.114.205	10.167.114.205
104	10.167.114.206/31	10.167.114.206 – 10.167.114.207	10.167.114.207
105	10.167.114.208/31	10.167.114.208 – 10.167.114.209	10.167.114.209
106	10.167.114.210/31	10.167.114.210 – 10.167.114.211	10.167.114.211
107	10.167.114.212/31	10.167.114.212 – 10.167.114.213	10.167.114.213
108	10.167.114.214/31	10.167.114.214 – 10.167.114.215	10.167.114.215
109	10.167.114.216/31	10.167.114.216 – 10.167.114.217	10.167.114.217
110	10.167.114.218/31	10.167.114.218 – 10.167.114.219	10.167.114.219
111	10.167.114.220/31	10.167.114.220 – 10.167.114.221	10.167.114.221
112	10.167.114.222/31	10.167.114.222 – 10.167.114.223	10.167.114.223
113	10.167.114.224/31	10.167.114.224 – 10.167.114.225	10.167.114.225
114	10.167.114.226/31	10.167.114.226 – 10.167.114.227	10.167.114.227
115	10.167.114.228/31	10.167.114.228 – 10.167.114.229	10.167.114.229
116	10.167.114.230/31	10.167.114.230 – 10.167.114.231	10.167.114.231
117	10.167.114.232/31	10.167.114.232 – 10.167.114.233	10.167.114.233
118	10.167.114.234/31	10.167.114.234 – 10.167.114.235	10.167.114.235
119	10.167.114.236/31	10.167.114.236 – 10.167.114.237	10.167.114.237
120	10.167.114.238/31	10.167.114.238 – 10.167.114.239	10.167.114.239
121	10.167.114.240/31	10.167.114.240 – 10.167.114.241	10.167.114.241
122	10.167.114.242/31	10.167.114.242 – 10.167.114.243	10.167.114.243
123	10.167.114.244/31	10.167.114.244 – 10.167.114.245	10.167.114.245
124	10.167.114.246/31	10.167.114.246 – 10.167.114.247	10.167.114.247
125	10.167.114.248/31	10.167.114.248 – 10.167.114.249	10.167.114.249
126	10.167.114.250/31	10.167.114.250 – 10.167.114.251	10.167.114.251
127	10.167.114.252/31	10.167.114.252 – 10.167.114.253	10.167.114.253
128	10.167.114.254/31	10.167.114.254 – 10.167.114.255	10.167.114.255
129	10.167.115.0/31	10.167.115.0 – 10.167.115.1	10.167.115.1
130	10.167.115.2/31	10.167.115.2 – 10.167.115.3	10.167.115.3
131	10.167.115.4/31	10.167.115.4 – 10.167.115.5	10.167.115.5
132	10.167.115.6/31	10.167.115.6 – 10.167.115.7	10.167.115.7
133	10.167.115.8/31	10.167.115.8 – 10.167.115.9	10.167.115.9
134	10.167.115.10/31	10.167.115.10 – 10.167.115.11	10.167.115.11
135	10.167.115.12/31	10.167.115.12 – 10.167.115.13	10.167.115.13
136	10.167.115.14/31	10.167.115.14 – 10.167.115.15	10.167.115.15
137	10.167.115.16/31	10.167.115.16 – 10.167.115.17	10.167.115.17
138	10.167.115.18/31	10.167.115.18 – 10.167.115.19	10.167.115.19
139	10.167.115.20/31	10.167.115.20 – 10.167.115.21	10.167.115.21
140	10.167.115.22/31	10.167.115.22 – 10.167.115.23	10.167.115.23
141	10.167.115.24/31	10.167.115.24 – 10.167.115.25	10.167.115.25
142	10.167.115.26/31	10.167.115.26 – 10.167.115.27	10.167.115.27
143	10.167.115.28/31	10.167.115.28 – 10.167.115.29	10.167.115.29
144	10.167.115.30/31	10.167.115.30 – 10.167.115.31	10.167.115.31
145	10.167.115.32/31	10.167.115.32 – 10.167.115.33	10.167.115.33
146	10.167.115.34/31	10.167.115.34 – 10.167.115.35	10.167.115.35
147	10.167.115.36/31	10.167.115.36 – 10.167.115.37	10.167.115.37
148	10.167.115.38/31	10.167.115.38 – 10.167.115.39	10.167.115.39
149	10.167.115.40/31	10.167.115.40 – 10.167.115.41	10.167.115.41
150	10.167.115.42/31	10.167.115.42 – 10.167.115.43	10.167.115.43
151	10.167.115.44/31	10.167.115.44 – 10.167.115.45	10.167.115.45
152	10.167.115.46/31	10.167.115.46 – 10.167.115.47	10.167.115.47
153	10.167.115.48/31	10.167.115.48 – 10.167.115.49	10.167.115.49
154	10.167.115.50/31	10.167.115.50 – 10.167.115.51	10.167.115.51
155	10.167.115.52/31	10.167.115.52 – 10.167.115.53	10.167.115.53
156	10.167.115.54/31	10.167.115.54 – 10.167.115.55	10.167.115.55
157	10.167.115.56/31	10.167.115.56 – 10.167.115.57	10.167.115.57
158	10.167.115.58/31	10.167.115.58 – 10.167.115.59	10.167.115.59
159	10.167.115.60/31	10.167.115.60 – 10.167.115.61	10.167.115.61
160	10.167.115.62/31	10.167.115.62 – 10.167.115.63	10.167.115.63
161	10.167.115.64/31	10.167.115.64 – 10.167.115.65	10.167.115.65
162	10.167.115.66/31	10.167.115.66 – 10.167.115.67	10.167.115.67
163	10.167.115.68/31	10.167.115.68 – 10.167.115.69	10.167.115.69
164	10.167.115.70/31	10.167.115.70 – 10.167.115.71	10.167.115.71
165	10.167.115.72/31	10.167.115.72 – 10.167.115.73	10.167.115.73
166	10.167.115.74/31	10.167.115.74 – 10.167.115.75	10.167.115.75
167	10.167.115.76/31	10.167.115.76 – 10.167.115.77	10.167.115.77
168	10.167.115.78/31	10.167.115.78 – 10.167.115.79	10.167.115.79
169	10.167.115.80/31	10.167.115.80 – 10.167.115.81	10.167.115.81
170	10.167.115.82/31	10.167.115.82 – 10.167.115.83	10.167.115.83
171	10.167.115.84/31	10.167.115.84 – 10.167.115.85	10.167.115.85
172	10.167.115.86/31	10.167.115.86 – 10.167.115.87	10.167.115.87
173	10.167.115.88/31	10.167.115.88 – 10.167.115.89	10.167.115.89
174	10.167.115.90/31	10.167.115.90 – 10.167.115.91	10.167.115.91
175	10.167.115.92/31	10.167.115.92 – 10.167.115.93	10.167.115.93
176	10.167.115.94/31	10.167.115.94 – 10.167.115.95	10.167.115.95
177	10.167.115.96/31	10.167.115.96 – 10.167.115.97	10.167.115.97
178	10.167.115.98/31	10.167.115.98 – 10.167.115.99	10.167.115.99
179	10.167.115.100/31	10.167.115.100 – 10.167.115.101	10.167.115.101
180	10.167.115.102/31	10.167.115.102 – 10.167.115.103	10.167.115.103
181	10.167.115.104/31	10.167.115.104 – 10.167.115.105	10.167.115.105
182	10.167.115.106/31	10.167.115.106 – 10.167.115.107	10.167.115.107
183	10.167.115.108/31	10.167.115.108 – 10.167.115.109	10.167.115.109
184	10.167.115.110/31	10.167.115.110 – 10.167.115.111	10.167.115.111
185	10.167.115.112/31	10.167.115.112 – 10.167.115.113	10.167.115.113
186	10.167.115.114/31	10.167.115.114 – 10.167.115.115	10.167.115.115
187	10.167.115.116/31	10.167.115.116 – 10.167.115.117	10.167.115.117
188	10.167.115.118/31	10.167.115.118 – 10.167.115.119	10.167.115.119
189	10.167.115.120/31	10.167.115.120 – 10.167.115.121	10.167.115.121
190	10.167.115.122/31	10.167.115.122 – 10.167.115.123	10.167.115.123
191	10.167.115.124/31	10.167.115.124 – 10.167.115.125	10.167.115.125
192	10.167.115.126/31	10.167.115.126 – 10.167.115.127	10.167.115.127
193	10.167.115.128/31	10.167.115.128 – 10.167.115.129	10.167.115.129
194	10.167.115.130/31	10.167.115.130 – 10.167.115.131	10.167.115.131
195	10.167.115.132/31	10.167.115.132 – 10.167.115.133	10.167.115.133
196	10.167.115.134/31	10.167.115.134 – 10.167.115.135	10.167.115.135
197	10.167.115.136/31	10.167.115.136 – 10.167.115.137	10.167.115.137
198	10.167.115.138/31	10.167.115.138 – 10.167.115.139	10.167.115.139
199	10.167.115.140/31	10.167.115.140 – 10.167.115.141	10.167.115.141
200	10.167.115.142/31	10.167.115.142 – 10.167.115.143	10.167.115.143
201	10.167.115.144/31	10.167.115.144 – 10.167.115.145	10.167.115.145
202	10.167.115.146/31	10.167.115.146 – 10.167.115.147	10.167.115.147
203	10.167.115.148/31	10.167.115.148 – 10.167.115.149	10.167.115.149
204	10.167.115.150/31	10.167.115.150 – 10.167.115.151	10.167.115.151
205	10.167.115.152/31	10.167.115.152 – 10.167.115.153	10.167.115.153
206	10.167.115.154/31	10.167.115.154 – 10.167.115.155	10.167.115.155
207	10.167.115.156/31	10.167.115.156 – 10.167.115.157	10.167.115.157
208	10.167.115.158/31	10.167.115.158 – 10.167.115.159	10.167.115.159
209	10.167.115.160/31	10.167.115.160 – 10.167.115.161	10.167.115.161
210	10.167.115.162/31	10.167.115.162 – 10.167.115.163	10.167.115.163
211	10.167.115.164/31	10.167.115.164 – 10.167.115.165	10.167.115.165
212	10.167.115.166/31	10.167.115.166 – 10.167.115.167	10.167.115.167
213	10.167.115.168/31	10.167.115.168 – 10.167.115.169	10.167.115.169
214	10.167.115.170/31	10.167.115.170 – 10.167.115.171	10.167.115.171
215	10.167.115.172/31	10.167.115.172 – 10.167.115.173	10.167.115.173
216	10.167.115.174/31	10.167.115.174 – 10.167.115.175	10.167.115.175
217	10.167.115.176/31	10.167.115.176 – 10.167.115.177	10.167.115.177
218	10.167.115.178/31	10.167.115.178 – 10.167.115.179	10.167.115.179
219	10.167.115.180/31	10.167.115.180 – 10.167.115.181	10.167.115.181
220	10.167.115.182/31	10.167.115.182 – 10.167.115.183	10.167.115.183
221	10.167.115.184/31	10.167.115.184 – 10.167.115.185	10.167.115.185
222	10.167.115.186/31	10.167.115.186 – 10.167.115.187	10.167.115.187
223	10.167.115.188/31	10.167.115.188 – 10.167.115.189	10.167.115.189
224	10.167.115.190/31	10.167.115.190 – 10.167.115.191	10.167.115.191
225	10.167.115.192/31	10.167.115.192 – 10.167.115.193	10.167.115.193
226	10.167.115.194/31	10.167.115.194 – 10.167.115.195	10.167.115.195
227	10.167.115.196/31	10.167.115.196 – 10.167.115.197	10.167.115.197
228	10.167.115.198/31	10.167.115.198 – 10.167.115.199	10.167.115.199
229	10.167.115.200/31	10.167.115.200 – 10.167.115.201	10.167.115.201
230	10.167.115.202/31	10.167.115.202 – 10.167.115.203	10.167.115.203
231	10.167.115.204/31	10.167.115.204 – 10.167.115.205	10.167.115.205
232	10.167.115.206/31	10.167.115.206 – 10.167.115.207	10.167.115.207
233	10.167.115.208/31	10.167.115.208 – 10.167.115.209	10.167.115.209
234	10.167.115.210/31	10.167.115.210 – 10.167.115.211	10.167.115.211
235	10.167.115.212/31	10.167.115.212 – 10.167.115.213	10.167.115.213
236	10.167.115.214/31	10.167.115.214 – 10.167.115.215	10.167.115.215
237	10.167.115.216/31	10.167.115.216 – 10.167.115.217	10.167.115.217
238	10.167.115.218/31	10.167.115.218 – 10.167.115.219	10.167.115.219
239	10.167.115.220/31	10.167.115.220 – 10.167.115.221	10.167.115.221
240	10.167.115.222/31	10.167.115.222 – 10.167.115.223	10.167.115.223
241	10.167.115.224/31	10.167.115.224 – 10.167.115.225	10.167.115.225
242	10.167.115.226/31	10.167.115.226 – 10.167.115.227	10.167.115.227
243	10.167.115.228/31	10.167.115.228 – 10.167.115.229	10.167.115.229
244	10.167.115.230/31	10.167.115.230 – 10.167.115.231	10.167.115.231
245	10.167.115.232/31	10.167.115.232 – 10.167.115.233	10.167.115.233
246	10.167.115.234/31	10.167.115.234 – 10.167.115.235	10.167.115.235
247	10.167.115.236/31	10.167.115.236 – 10.167.115.237	10.167.115.237
248	10.167.115.238/31	10.167.115.238 – 10.167.115.239	10.167.115.239
249	10.167.115.240/31	10.167.115.240 – 10.167.115.241	10.167.115.241
250	10.167.115.242/31	10.167.115.242 – 10.167.115.243	10.167.115.243
251	10.167.115.244/31	10.167.115.244 – 10.167.115.245	10.167.115.245
252	10.167.115.246/31	10.167.115.246 – 10.167.115.247	10.167.115.247
253	10.167.115.248/31	10.167.115.248 – 10.167.115.249	10.167.115.249
254	10.167.115.250/31	10.167.115.250 – 10.167.115.251	10.167.115.251
255	10.167.115.252/31	10.167.115.252 – 10.167.115.253	10.167.115.253
256	10.167.115.254/31	10.167.115.254 – 10.167.115.255	10.167.115.255

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 →