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)10.136.152.0/23

network10.136.152.0/23

broadcast10.136.153.255

first host10.136.152.1

last host10.136.153.254

subnet mask255.255.254.0

wildcard0.0.1.255

addresses512

usable hosts510

classA

ipcalc 10.136.152.0/23

address00001010.10001000.10011000.00000000

subnet mask11111111.11111111.11111110.00000000

network00001010.10001000.10011000.00000000

broadcast00001010.10001000.10011001.11111111

green = network part, grey = host part

hex0x0a889800

decimal176723968

reverse dns0.152.136.10.in-addr.arpa

ipv4-mapped::ffff:a88:9800

/23 split into /31 · 256 subnets

close ×

#	network	host range	broadcast
1	10.136.152.0/31	10.136.152.0 – 10.136.152.1	10.136.152.1
2	10.136.152.2/31	10.136.152.2 – 10.136.152.3	10.136.152.3
3	10.136.152.4/31	10.136.152.4 – 10.136.152.5	10.136.152.5
4	10.136.152.6/31	10.136.152.6 – 10.136.152.7	10.136.152.7
5	10.136.152.8/31	10.136.152.8 – 10.136.152.9	10.136.152.9
6	10.136.152.10/31	10.136.152.10 – 10.136.152.11	10.136.152.11
7	10.136.152.12/31	10.136.152.12 – 10.136.152.13	10.136.152.13
8	10.136.152.14/31	10.136.152.14 – 10.136.152.15	10.136.152.15
9	10.136.152.16/31	10.136.152.16 – 10.136.152.17	10.136.152.17
10	10.136.152.18/31	10.136.152.18 – 10.136.152.19	10.136.152.19
11	10.136.152.20/31	10.136.152.20 – 10.136.152.21	10.136.152.21
12	10.136.152.22/31	10.136.152.22 – 10.136.152.23	10.136.152.23
13	10.136.152.24/31	10.136.152.24 – 10.136.152.25	10.136.152.25
14	10.136.152.26/31	10.136.152.26 – 10.136.152.27	10.136.152.27
15	10.136.152.28/31	10.136.152.28 – 10.136.152.29	10.136.152.29
16	10.136.152.30/31	10.136.152.30 – 10.136.152.31	10.136.152.31
17	10.136.152.32/31	10.136.152.32 – 10.136.152.33	10.136.152.33
18	10.136.152.34/31	10.136.152.34 – 10.136.152.35	10.136.152.35
19	10.136.152.36/31	10.136.152.36 – 10.136.152.37	10.136.152.37
20	10.136.152.38/31	10.136.152.38 – 10.136.152.39	10.136.152.39
21	10.136.152.40/31	10.136.152.40 – 10.136.152.41	10.136.152.41
22	10.136.152.42/31	10.136.152.42 – 10.136.152.43	10.136.152.43
23	10.136.152.44/31	10.136.152.44 – 10.136.152.45	10.136.152.45
24	10.136.152.46/31	10.136.152.46 – 10.136.152.47	10.136.152.47
25	10.136.152.48/31	10.136.152.48 – 10.136.152.49	10.136.152.49
26	10.136.152.50/31	10.136.152.50 – 10.136.152.51	10.136.152.51
27	10.136.152.52/31	10.136.152.52 – 10.136.152.53	10.136.152.53
28	10.136.152.54/31	10.136.152.54 – 10.136.152.55	10.136.152.55
29	10.136.152.56/31	10.136.152.56 – 10.136.152.57	10.136.152.57
30	10.136.152.58/31	10.136.152.58 – 10.136.152.59	10.136.152.59
31	10.136.152.60/31	10.136.152.60 – 10.136.152.61	10.136.152.61
32	10.136.152.62/31	10.136.152.62 – 10.136.152.63	10.136.152.63
33	10.136.152.64/31	10.136.152.64 – 10.136.152.65	10.136.152.65
34	10.136.152.66/31	10.136.152.66 – 10.136.152.67	10.136.152.67
35	10.136.152.68/31	10.136.152.68 – 10.136.152.69	10.136.152.69
36	10.136.152.70/31	10.136.152.70 – 10.136.152.71	10.136.152.71
37	10.136.152.72/31	10.136.152.72 – 10.136.152.73	10.136.152.73
38	10.136.152.74/31	10.136.152.74 – 10.136.152.75	10.136.152.75
39	10.136.152.76/31	10.136.152.76 – 10.136.152.77	10.136.152.77
40	10.136.152.78/31	10.136.152.78 – 10.136.152.79	10.136.152.79
41	10.136.152.80/31	10.136.152.80 – 10.136.152.81	10.136.152.81
42	10.136.152.82/31	10.136.152.82 – 10.136.152.83	10.136.152.83
43	10.136.152.84/31	10.136.152.84 – 10.136.152.85	10.136.152.85
44	10.136.152.86/31	10.136.152.86 – 10.136.152.87	10.136.152.87
45	10.136.152.88/31	10.136.152.88 – 10.136.152.89	10.136.152.89
46	10.136.152.90/31	10.136.152.90 – 10.136.152.91	10.136.152.91
47	10.136.152.92/31	10.136.152.92 – 10.136.152.93	10.136.152.93
48	10.136.152.94/31	10.136.152.94 – 10.136.152.95	10.136.152.95
49	10.136.152.96/31	10.136.152.96 – 10.136.152.97	10.136.152.97
50	10.136.152.98/31	10.136.152.98 – 10.136.152.99	10.136.152.99
51	10.136.152.100/31	10.136.152.100 – 10.136.152.101	10.136.152.101
52	10.136.152.102/31	10.136.152.102 – 10.136.152.103	10.136.152.103
53	10.136.152.104/31	10.136.152.104 – 10.136.152.105	10.136.152.105
54	10.136.152.106/31	10.136.152.106 – 10.136.152.107	10.136.152.107
55	10.136.152.108/31	10.136.152.108 – 10.136.152.109	10.136.152.109
56	10.136.152.110/31	10.136.152.110 – 10.136.152.111	10.136.152.111
57	10.136.152.112/31	10.136.152.112 – 10.136.152.113	10.136.152.113
58	10.136.152.114/31	10.136.152.114 – 10.136.152.115	10.136.152.115
59	10.136.152.116/31	10.136.152.116 – 10.136.152.117	10.136.152.117
60	10.136.152.118/31	10.136.152.118 – 10.136.152.119	10.136.152.119
61	10.136.152.120/31	10.136.152.120 – 10.136.152.121	10.136.152.121
62	10.136.152.122/31	10.136.152.122 – 10.136.152.123	10.136.152.123
63	10.136.152.124/31	10.136.152.124 – 10.136.152.125	10.136.152.125
64	10.136.152.126/31	10.136.152.126 – 10.136.152.127	10.136.152.127
65	10.136.152.128/31	10.136.152.128 – 10.136.152.129	10.136.152.129
66	10.136.152.130/31	10.136.152.130 – 10.136.152.131	10.136.152.131
67	10.136.152.132/31	10.136.152.132 – 10.136.152.133	10.136.152.133
68	10.136.152.134/31	10.136.152.134 – 10.136.152.135	10.136.152.135
69	10.136.152.136/31	10.136.152.136 – 10.136.152.137	10.136.152.137
70	10.136.152.138/31	10.136.152.138 – 10.136.152.139	10.136.152.139
71	10.136.152.140/31	10.136.152.140 – 10.136.152.141	10.136.152.141
72	10.136.152.142/31	10.136.152.142 – 10.136.152.143	10.136.152.143
73	10.136.152.144/31	10.136.152.144 – 10.136.152.145	10.136.152.145
74	10.136.152.146/31	10.136.152.146 – 10.136.152.147	10.136.152.147
75	10.136.152.148/31	10.136.152.148 – 10.136.152.149	10.136.152.149
76	10.136.152.150/31	10.136.152.150 – 10.136.152.151	10.136.152.151
77	10.136.152.152/31	10.136.152.152 – 10.136.152.153	10.136.152.153
78	10.136.152.154/31	10.136.152.154 – 10.136.152.155	10.136.152.155
79	10.136.152.156/31	10.136.152.156 – 10.136.152.157	10.136.152.157
80	10.136.152.158/31	10.136.152.158 – 10.136.152.159	10.136.152.159
81	10.136.152.160/31	10.136.152.160 – 10.136.152.161	10.136.152.161
82	10.136.152.162/31	10.136.152.162 – 10.136.152.163	10.136.152.163
83	10.136.152.164/31	10.136.152.164 – 10.136.152.165	10.136.152.165
84	10.136.152.166/31	10.136.152.166 – 10.136.152.167	10.136.152.167
85	10.136.152.168/31	10.136.152.168 – 10.136.152.169	10.136.152.169
86	10.136.152.170/31	10.136.152.170 – 10.136.152.171	10.136.152.171
87	10.136.152.172/31	10.136.152.172 – 10.136.152.173	10.136.152.173
88	10.136.152.174/31	10.136.152.174 – 10.136.152.175	10.136.152.175
89	10.136.152.176/31	10.136.152.176 – 10.136.152.177	10.136.152.177
90	10.136.152.178/31	10.136.152.178 – 10.136.152.179	10.136.152.179
91	10.136.152.180/31	10.136.152.180 – 10.136.152.181	10.136.152.181
92	10.136.152.182/31	10.136.152.182 – 10.136.152.183	10.136.152.183
93	10.136.152.184/31	10.136.152.184 – 10.136.152.185	10.136.152.185
94	10.136.152.186/31	10.136.152.186 – 10.136.152.187	10.136.152.187
95	10.136.152.188/31	10.136.152.188 – 10.136.152.189	10.136.152.189
96	10.136.152.190/31	10.136.152.190 – 10.136.152.191	10.136.152.191
97	10.136.152.192/31	10.136.152.192 – 10.136.152.193	10.136.152.193
98	10.136.152.194/31	10.136.152.194 – 10.136.152.195	10.136.152.195
99	10.136.152.196/31	10.136.152.196 – 10.136.152.197	10.136.152.197
100	10.136.152.198/31	10.136.152.198 – 10.136.152.199	10.136.152.199
101	10.136.152.200/31	10.136.152.200 – 10.136.152.201	10.136.152.201
102	10.136.152.202/31	10.136.152.202 – 10.136.152.203	10.136.152.203
103	10.136.152.204/31	10.136.152.204 – 10.136.152.205	10.136.152.205
104	10.136.152.206/31	10.136.152.206 – 10.136.152.207	10.136.152.207
105	10.136.152.208/31	10.136.152.208 – 10.136.152.209	10.136.152.209
106	10.136.152.210/31	10.136.152.210 – 10.136.152.211	10.136.152.211
107	10.136.152.212/31	10.136.152.212 – 10.136.152.213	10.136.152.213
108	10.136.152.214/31	10.136.152.214 – 10.136.152.215	10.136.152.215
109	10.136.152.216/31	10.136.152.216 – 10.136.152.217	10.136.152.217
110	10.136.152.218/31	10.136.152.218 – 10.136.152.219	10.136.152.219
111	10.136.152.220/31	10.136.152.220 – 10.136.152.221	10.136.152.221
112	10.136.152.222/31	10.136.152.222 – 10.136.152.223	10.136.152.223
113	10.136.152.224/31	10.136.152.224 – 10.136.152.225	10.136.152.225
114	10.136.152.226/31	10.136.152.226 – 10.136.152.227	10.136.152.227
115	10.136.152.228/31	10.136.152.228 – 10.136.152.229	10.136.152.229
116	10.136.152.230/31	10.136.152.230 – 10.136.152.231	10.136.152.231
117	10.136.152.232/31	10.136.152.232 – 10.136.152.233	10.136.152.233
118	10.136.152.234/31	10.136.152.234 – 10.136.152.235	10.136.152.235
119	10.136.152.236/31	10.136.152.236 – 10.136.152.237	10.136.152.237
120	10.136.152.238/31	10.136.152.238 – 10.136.152.239	10.136.152.239
121	10.136.152.240/31	10.136.152.240 – 10.136.152.241	10.136.152.241
122	10.136.152.242/31	10.136.152.242 – 10.136.152.243	10.136.152.243
123	10.136.152.244/31	10.136.152.244 – 10.136.152.245	10.136.152.245
124	10.136.152.246/31	10.136.152.246 – 10.136.152.247	10.136.152.247
125	10.136.152.248/31	10.136.152.248 – 10.136.152.249	10.136.152.249
126	10.136.152.250/31	10.136.152.250 – 10.136.152.251	10.136.152.251
127	10.136.152.252/31	10.136.152.252 – 10.136.152.253	10.136.152.253
128	10.136.152.254/31	10.136.152.254 – 10.136.152.255	10.136.152.255
129	10.136.153.0/31	10.136.153.0 – 10.136.153.1	10.136.153.1
130	10.136.153.2/31	10.136.153.2 – 10.136.153.3	10.136.153.3
131	10.136.153.4/31	10.136.153.4 – 10.136.153.5	10.136.153.5
132	10.136.153.6/31	10.136.153.6 – 10.136.153.7	10.136.153.7
133	10.136.153.8/31	10.136.153.8 – 10.136.153.9	10.136.153.9
134	10.136.153.10/31	10.136.153.10 – 10.136.153.11	10.136.153.11
135	10.136.153.12/31	10.136.153.12 – 10.136.153.13	10.136.153.13
136	10.136.153.14/31	10.136.153.14 – 10.136.153.15	10.136.153.15
137	10.136.153.16/31	10.136.153.16 – 10.136.153.17	10.136.153.17
138	10.136.153.18/31	10.136.153.18 – 10.136.153.19	10.136.153.19
139	10.136.153.20/31	10.136.153.20 – 10.136.153.21	10.136.153.21
140	10.136.153.22/31	10.136.153.22 – 10.136.153.23	10.136.153.23
141	10.136.153.24/31	10.136.153.24 – 10.136.153.25	10.136.153.25
142	10.136.153.26/31	10.136.153.26 – 10.136.153.27	10.136.153.27
143	10.136.153.28/31	10.136.153.28 – 10.136.153.29	10.136.153.29
144	10.136.153.30/31	10.136.153.30 – 10.136.153.31	10.136.153.31
145	10.136.153.32/31	10.136.153.32 – 10.136.153.33	10.136.153.33
146	10.136.153.34/31	10.136.153.34 – 10.136.153.35	10.136.153.35
147	10.136.153.36/31	10.136.153.36 – 10.136.153.37	10.136.153.37
148	10.136.153.38/31	10.136.153.38 – 10.136.153.39	10.136.153.39
149	10.136.153.40/31	10.136.153.40 – 10.136.153.41	10.136.153.41
150	10.136.153.42/31	10.136.153.42 – 10.136.153.43	10.136.153.43
151	10.136.153.44/31	10.136.153.44 – 10.136.153.45	10.136.153.45
152	10.136.153.46/31	10.136.153.46 – 10.136.153.47	10.136.153.47
153	10.136.153.48/31	10.136.153.48 – 10.136.153.49	10.136.153.49
154	10.136.153.50/31	10.136.153.50 – 10.136.153.51	10.136.153.51
155	10.136.153.52/31	10.136.153.52 – 10.136.153.53	10.136.153.53
156	10.136.153.54/31	10.136.153.54 – 10.136.153.55	10.136.153.55
157	10.136.153.56/31	10.136.153.56 – 10.136.153.57	10.136.153.57
158	10.136.153.58/31	10.136.153.58 – 10.136.153.59	10.136.153.59
159	10.136.153.60/31	10.136.153.60 – 10.136.153.61	10.136.153.61
160	10.136.153.62/31	10.136.153.62 – 10.136.153.63	10.136.153.63
161	10.136.153.64/31	10.136.153.64 – 10.136.153.65	10.136.153.65
162	10.136.153.66/31	10.136.153.66 – 10.136.153.67	10.136.153.67
163	10.136.153.68/31	10.136.153.68 – 10.136.153.69	10.136.153.69
164	10.136.153.70/31	10.136.153.70 – 10.136.153.71	10.136.153.71
165	10.136.153.72/31	10.136.153.72 – 10.136.153.73	10.136.153.73
166	10.136.153.74/31	10.136.153.74 – 10.136.153.75	10.136.153.75
167	10.136.153.76/31	10.136.153.76 – 10.136.153.77	10.136.153.77
168	10.136.153.78/31	10.136.153.78 – 10.136.153.79	10.136.153.79
169	10.136.153.80/31	10.136.153.80 – 10.136.153.81	10.136.153.81
170	10.136.153.82/31	10.136.153.82 – 10.136.153.83	10.136.153.83
171	10.136.153.84/31	10.136.153.84 – 10.136.153.85	10.136.153.85
172	10.136.153.86/31	10.136.153.86 – 10.136.153.87	10.136.153.87
173	10.136.153.88/31	10.136.153.88 – 10.136.153.89	10.136.153.89
174	10.136.153.90/31	10.136.153.90 – 10.136.153.91	10.136.153.91
175	10.136.153.92/31	10.136.153.92 – 10.136.153.93	10.136.153.93
176	10.136.153.94/31	10.136.153.94 – 10.136.153.95	10.136.153.95
177	10.136.153.96/31	10.136.153.96 – 10.136.153.97	10.136.153.97
178	10.136.153.98/31	10.136.153.98 – 10.136.153.99	10.136.153.99
179	10.136.153.100/31	10.136.153.100 – 10.136.153.101	10.136.153.101
180	10.136.153.102/31	10.136.153.102 – 10.136.153.103	10.136.153.103
181	10.136.153.104/31	10.136.153.104 – 10.136.153.105	10.136.153.105
182	10.136.153.106/31	10.136.153.106 – 10.136.153.107	10.136.153.107
183	10.136.153.108/31	10.136.153.108 – 10.136.153.109	10.136.153.109
184	10.136.153.110/31	10.136.153.110 – 10.136.153.111	10.136.153.111
185	10.136.153.112/31	10.136.153.112 – 10.136.153.113	10.136.153.113
186	10.136.153.114/31	10.136.153.114 – 10.136.153.115	10.136.153.115
187	10.136.153.116/31	10.136.153.116 – 10.136.153.117	10.136.153.117
188	10.136.153.118/31	10.136.153.118 – 10.136.153.119	10.136.153.119
189	10.136.153.120/31	10.136.153.120 – 10.136.153.121	10.136.153.121
190	10.136.153.122/31	10.136.153.122 – 10.136.153.123	10.136.153.123
191	10.136.153.124/31	10.136.153.124 – 10.136.153.125	10.136.153.125
192	10.136.153.126/31	10.136.153.126 – 10.136.153.127	10.136.153.127
193	10.136.153.128/31	10.136.153.128 – 10.136.153.129	10.136.153.129
194	10.136.153.130/31	10.136.153.130 – 10.136.153.131	10.136.153.131
195	10.136.153.132/31	10.136.153.132 – 10.136.153.133	10.136.153.133
196	10.136.153.134/31	10.136.153.134 – 10.136.153.135	10.136.153.135
197	10.136.153.136/31	10.136.153.136 – 10.136.153.137	10.136.153.137
198	10.136.153.138/31	10.136.153.138 – 10.136.153.139	10.136.153.139
199	10.136.153.140/31	10.136.153.140 – 10.136.153.141	10.136.153.141
200	10.136.153.142/31	10.136.153.142 – 10.136.153.143	10.136.153.143
201	10.136.153.144/31	10.136.153.144 – 10.136.153.145	10.136.153.145
202	10.136.153.146/31	10.136.153.146 – 10.136.153.147	10.136.153.147
203	10.136.153.148/31	10.136.153.148 – 10.136.153.149	10.136.153.149
204	10.136.153.150/31	10.136.153.150 – 10.136.153.151	10.136.153.151
205	10.136.153.152/31	10.136.153.152 – 10.136.153.153	10.136.153.153
206	10.136.153.154/31	10.136.153.154 – 10.136.153.155	10.136.153.155
207	10.136.153.156/31	10.136.153.156 – 10.136.153.157	10.136.153.157
208	10.136.153.158/31	10.136.153.158 – 10.136.153.159	10.136.153.159
209	10.136.153.160/31	10.136.153.160 – 10.136.153.161	10.136.153.161
210	10.136.153.162/31	10.136.153.162 – 10.136.153.163	10.136.153.163
211	10.136.153.164/31	10.136.153.164 – 10.136.153.165	10.136.153.165
212	10.136.153.166/31	10.136.153.166 – 10.136.153.167	10.136.153.167
213	10.136.153.168/31	10.136.153.168 – 10.136.153.169	10.136.153.169
214	10.136.153.170/31	10.136.153.170 – 10.136.153.171	10.136.153.171
215	10.136.153.172/31	10.136.153.172 – 10.136.153.173	10.136.153.173
216	10.136.153.174/31	10.136.153.174 – 10.136.153.175	10.136.153.175
217	10.136.153.176/31	10.136.153.176 – 10.136.153.177	10.136.153.177
218	10.136.153.178/31	10.136.153.178 – 10.136.153.179	10.136.153.179
219	10.136.153.180/31	10.136.153.180 – 10.136.153.181	10.136.153.181
220	10.136.153.182/31	10.136.153.182 – 10.136.153.183	10.136.153.183
221	10.136.153.184/31	10.136.153.184 – 10.136.153.185	10.136.153.185
222	10.136.153.186/31	10.136.153.186 – 10.136.153.187	10.136.153.187
223	10.136.153.188/31	10.136.153.188 – 10.136.153.189	10.136.153.189
224	10.136.153.190/31	10.136.153.190 – 10.136.153.191	10.136.153.191
225	10.136.153.192/31	10.136.153.192 – 10.136.153.193	10.136.153.193
226	10.136.153.194/31	10.136.153.194 – 10.136.153.195	10.136.153.195
227	10.136.153.196/31	10.136.153.196 – 10.136.153.197	10.136.153.197
228	10.136.153.198/31	10.136.153.198 – 10.136.153.199	10.136.153.199
229	10.136.153.200/31	10.136.153.200 – 10.136.153.201	10.136.153.201
230	10.136.153.202/31	10.136.153.202 – 10.136.153.203	10.136.153.203
231	10.136.153.204/31	10.136.153.204 – 10.136.153.205	10.136.153.205
232	10.136.153.206/31	10.136.153.206 – 10.136.153.207	10.136.153.207
233	10.136.153.208/31	10.136.153.208 – 10.136.153.209	10.136.153.209
234	10.136.153.210/31	10.136.153.210 – 10.136.153.211	10.136.153.211
235	10.136.153.212/31	10.136.153.212 – 10.136.153.213	10.136.153.213
236	10.136.153.214/31	10.136.153.214 – 10.136.153.215	10.136.153.215
237	10.136.153.216/31	10.136.153.216 – 10.136.153.217	10.136.153.217
238	10.136.153.218/31	10.136.153.218 – 10.136.153.219	10.136.153.219
239	10.136.153.220/31	10.136.153.220 – 10.136.153.221	10.136.153.221
240	10.136.153.222/31	10.136.153.222 – 10.136.153.223	10.136.153.223
241	10.136.153.224/31	10.136.153.224 – 10.136.153.225	10.136.153.225
242	10.136.153.226/31	10.136.153.226 – 10.136.153.227	10.136.153.227
243	10.136.153.228/31	10.136.153.228 – 10.136.153.229	10.136.153.229
244	10.136.153.230/31	10.136.153.230 – 10.136.153.231	10.136.153.231
245	10.136.153.232/31	10.136.153.232 – 10.136.153.233	10.136.153.233
246	10.136.153.234/31	10.136.153.234 – 10.136.153.235	10.136.153.235
247	10.136.153.236/31	10.136.153.236 – 10.136.153.237	10.136.153.237
248	10.136.153.238/31	10.136.153.238 – 10.136.153.239	10.136.153.239
249	10.136.153.240/31	10.136.153.240 – 10.136.153.241	10.136.153.241
250	10.136.153.242/31	10.136.153.242 – 10.136.153.243	10.136.153.243
251	10.136.153.244/31	10.136.153.244 – 10.136.153.245	10.136.153.245
252	10.136.153.246/31	10.136.153.246 – 10.136.153.247	10.136.153.247
253	10.136.153.248/31	10.136.153.248 – 10.136.153.249	10.136.153.249
254	10.136.153.250/31	10.136.153.250 – 10.136.153.251	10.136.153.251
255	10.136.153.252/31	10.136.153.252 – 10.136.153.253	10.136.153.253
256	10.136.153.254/31	10.136.153.254 – 10.136.153.255	10.136.153.255

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 →