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)10.0.174.0/23

network10.0.174.0/23

broadcast10.0.175.255

first host10.0.174.1

last host10.0.175.254

subnet mask255.255.254.0

wildcard0.0.1.255

addresses512

usable hosts510

classA

ipcalc 10.0.174.0/23

address00001010.00000000.10101110.00000000

subnet mask11111111.11111111.11111110.00000000

network00001010.00000000.10101110.00000000

broadcast00001010.00000000.10101111.11111111

green = network part, grey = host part

hex0x0a00ae00

decimal167816704

reverse dns0.174.0.10.in-addr.arpa

ipv4-mapped::ffff:a00:ae00

/23 split into /31 · 256 subnets

close ×

#	network	host range	broadcast
1	10.0.174.0/31	10.0.174.0 – 10.0.174.1	10.0.174.1
2	10.0.174.2/31	10.0.174.2 – 10.0.174.3	10.0.174.3
3	10.0.174.4/31	10.0.174.4 – 10.0.174.5	10.0.174.5
4	10.0.174.6/31	10.0.174.6 – 10.0.174.7	10.0.174.7
5	10.0.174.8/31	10.0.174.8 – 10.0.174.9	10.0.174.9
6	10.0.174.10/31	10.0.174.10 – 10.0.174.11	10.0.174.11
7	10.0.174.12/31	10.0.174.12 – 10.0.174.13	10.0.174.13
8	10.0.174.14/31	10.0.174.14 – 10.0.174.15	10.0.174.15
9	10.0.174.16/31	10.0.174.16 – 10.0.174.17	10.0.174.17
10	10.0.174.18/31	10.0.174.18 – 10.0.174.19	10.0.174.19
11	10.0.174.20/31	10.0.174.20 – 10.0.174.21	10.0.174.21
12	10.0.174.22/31	10.0.174.22 – 10.0.174.23	10.0.174.23
13	10.0.174.24/31	10.0.174.24 – 10.0.174.25	10.0.174.25
14	10.0.174.26/31	10.0.174.26 – 10.0.174.27	10.0.174.27
15	10.0.174.28/31	10.0.174.28 – 10.0.174.29	10.0.174.29
16	10.0.174.30/31	10.0.174.30 – 10.0.174.31	10.0.174.31
17	10.0.174.32/31	10.0.174.32 – 10.0.174.33	10.0.174.33
18	10.0.174.34/31	10.0.174.34 – 10.0.174.35	10.0.174.35
19	10.0.174.36/31	10.0.174.36 – 10.0.174.37	10.0.174.37
20	10.0.174.38/31	10.0.174.38 – 10.0.174.39	10.0.174.39
21	10.0.174.40/31	10.0.174.40 – 10.0.174.41	10.0.174.41
22	10.0.174.42/31	10.0.174.42 – 10.0.174.43	10.0.174.43
23	10.0.174.44/31	10.0.174.44 – 10.0.174.45	10.0.174.45
24	10.0.174.46/31	10.0.174.46 – 10.0.174.47	10.0.174.47
25	10.0.174.48/31	10.0.174.48 – 10.0.174.49	10.0.174.49
26	10.0.174.50/31	10.0.174.50 – 10.0.174.51	10.0.174.51
27	10.0.174.52/31	10.0.174.52 – 10.0.174.53	10.0.174.53
28	10.0.174.54/31	10.0.174.54 – 10.0.174.55	10.0.174.55
29	10.0.174.56/31	10.0.174.56 – 10.0.174.57	10.0.174.57
30	10.0.174.58/31	10.0.174.58 – 10.0.174.59	10.0.174.59
31	10.0.174.60/31	10.0.174.60 – 10.0.174.61	10.0.174.61
32	10.0.174.62/31	10.0.174.62 – 10.0.174.63	10.0.174.63
33	10.0.174.64/31	10.0.174.64 – 10.0.174.65	10.0.174.65
34	10.0.174.66/31	10.0.174.66 – 10.0.174.67	10.0.174.67
35	10.0.174.68/31	10.0.174.68 – 10.0.174.69	10.0.174.69
36	10.0.174.70/31	10.0.174.70 – 10.0.174.71	10.0.174.71
37	10.0.174.72/31	10.0.174.72 – 10.0.174.73	10.0.174.73
38	10.0.174.74/31	10.0.174.74 – 10.0.174.75	10.0.174.75
39	10.0.174.76/31	10.0.174.76 – 10.0.174.77	10.0.174.77
40	10.0.174.78/31	10.0.174.78 – 10.0.174.79	10.0.174.79
41	10.0.174.80/31	10.0.174.80 – 10.0.174.81	10.0.174.81
42	10.0.174.82/31	10.0.174.82 – 10.0.174.83	10.0.174.83
43	10.0.174.84/31	10.0.174.84 – 10.0.174.85	10.0.174.85
44	10.0.174.86/31	10.0.174.86 – 10.0.174.87	10.0.174.87
45	10.0.174.88/31	10.0.174.88 – 10.0.174.89	10.0.174.89
46	10.0.174.90/31	10.0.174.90 – 10.0.174.91	10.0.174.91
47	10.0.174.92/31	10.0.174.92 – 10.0.174.93	10.0.174.93
48	10.0.174.94/31	10.0.174.94 – 10.0.174.95	10.0.174.95
49	10.0.174.96/31	10.0.174.96 – 10.0.174.97	10.0.174.97
50	10.0.174.98/31	10.0.174.98 – 10.0.174.99	10.0.174.99
51	10.0.174.100/31	10.0.174.100 – 10.0.174.101	10.0.174.101
52	10.0.174.102/31	10.0.174.102 – 10.0.174.103	10.0.174.103
53	10.0.174.104/31	10.0.174.104 – 10.0.174.105	10.0.174.105
54	10.0.174.106/31	10.0.174.106 – 10.0.174.107	10.0.174.107
55	10.0.174.108/31	10.0.174.108 – 10.0.174.109	10.0.174.109
56	10.0.174.110/31	10.0.174.110 – 10.0.174.111	10.0.174.111
57	10.0.174.112/31	10.0.174.112 – 10.0.174.113	10.0.174.113
58	10.0.174.114/31	10.0.174.114 – 10.0.174.115	10.0.174.115
59	10.0.174.116/31	10.0.174.116 – 10.0.174.117	10.0.174.117
60	10.0.174.118/31	10.0.174.118 – 10.0.174.119	10.0.174.119
61	10.0.174.120/31	10.0.174.120 – 10.0.174.121	10.0.174.121
62	10.0.174.122/31	10.0.174.122 – 10.0.174.123	10.0.174.123
63	10.0.174.124/31	10.0.174.124 – 10.0.174.125	10.0.174.125
64	10.0.174.126/31	10.0.174.126 – 10.0.174.127	10.0.174.127
65	10.0.174.128/31	10.0.174.128 – 10.0.174.129	10.0.174.129
66	10.0.174.130/31	10.0.174.130 – 10.0.174.131	10.0.174.131
67	10.0.174.132/31	10.0.174.132 – 10.0.174.133	10.0.174.133
68	10.0.174.134/31	10.0.174.134 – 10.0.174.135	10.0.174.135
69	10.0.174.136/31	10.0.174.136 – 10.0.174.137	10.0.174.137
70	10.0.174.138/31	10.0.174.138 – 10.0.174.139	10.0.174.139
71	10.0.174.140/31	10.0.174.140 – 10.0.174.141	10.0.174.141
72	10.0.174.142/31	10.0.174.142 – 10.0.174.143	10.0.174.143
73	10.0.174.144/31	10.0.174.144 – 10.0.174.145	10.0.174.145
74	10.0.174.146/31	10.0.174.146 – 10.0.174.147	10.0.174.147
75	10.0.174.148/31	10.0.174.148 – 10.0.174.149	10.0.174.149
76	10.0.174.150/31	10.0.174.150 – 10.0.174.151	10.0.174.151
77	10.0.174.152/31	10.0.174.152 – 10.0.174.153	10.0.174.153
78	10.0.174.154/31	10.0.174.154 – 10.0.174.155	10.0.174.155
79	10.0.174.156/31	10.0.174.156 – 10.0.174.157	10.0.174.157
80	10.0.174.158/31	10.0.174.158 – 10.0.174.159	10.0.174.159
81	10.0.174.160/31	10.0.174.160 – 10.0.174.161	10.0.174.161
82	10.0.174.162/31	10.0.174.162 – 10.0.174.163	10.0.174.163
83	10.0.174.164/31	10.0.174.164 – 10.0.174.165	10.0.174.165
84	10.0.174.166/31	10.0.174.166 – 10.0.174.167	10.0.174.167
85	10.0.174.168/31	10.0.174.168 – 10.0.174.169	10.0.174.169
86	10.0.174.170/31	10.0.174.170 – 10.0.174.171	10.0.174.171
87	10.0.174.172/31	10.0.174.172 – 10.0.174.173	10.0.174.173
88	10.0.174.174/31	10.0.174.174 – 10.0.174.175	10.0.174.175
89	10.0.174.176/31	10.0.174.176 – 10.0.174.177	10.0.174.177
90	10.0.174.178/31	10.0.174.178 – 10.0.174.179	10.0.174.179
91	10.0.174.180/31	10.0.174.180 – 10.0.174.181	10.0.174.181
92	10.0.174.182/31	10.0.174.182 – 10.0.174.183	10.0.174.183
93	10.0.174.184/31	10.0.174.184 – 10.0.174.185	10.0.174.185
94	10.0.174.186/31	10.0.174.186 – 10.0.174.187	10.0.174.187
95	10.0.174.188/31	10.0.174.188 – 10.0.174.189	10.0.174.189
96	10.0.174.190/31	10.0.174.190 – 10.0.174.191	10.0.174.191
97	10.0.174.192/31	10.0.174.192 – 10.0.174.193	10.0.174.193
98	10.0.174.194/31	10.0.174.194 – 10.0.174.195	10.0.174.195
99	10.0.174.196/31	10.0.174.196 – 10.0.174.197	10.0.174.197
100	10.0.174.198/31	10.0.174.198 – 10.0.174.199	10.0.174.199
101	10.0.174.200/31	10.0.174.200 – 10.0.174.201	10.0.174.201
102	10.0.174.202/31	10.0.174.202 – 10.0.174.203	10.0.174.203
103	10.0.174.204/31	10.0.174.204 – 10.0.174.205	10.0.174.205
104	10.0.174.206/31	10.0.174.206 – 10.0.174.207	10.0.174.207
105	10.0.174.208/31	10.0.174.208 – 10.0.174.209	10.0.174.209
106	10.0.174.210/31	10.0.174.210 – 10.0.174.211	10.0.174.211
107	10.0.174.212/31	10.0.174.212 – 10.0.174.213	10.0.174.213
108	10.0.174.214/31	10.0.174.214 – 10.0.174.215	10.0.174.215
109	10.0.174.216/31	10.0.174.216 – 10.0.174.217	10.0.174.217
110	10.0.174.218/31	10.0.174.218 – 10.0.174.219	10.0.174.219
111	10.0.174.220/31	10.0.174.220 – 10.0.174.221	10.0.174.221
112	10.0.174.222/31	10.0.174.222 – 10.0.174.223	10.0.174.223
113	10.0.174.224/31	10.0.174.224 – 10.0.174.225	10.0.174.225
114	10.0.174.226/31	10.0.174.226 – 10.0.174.227	10.0.174.227
115	10.0.174.228/31	10.0.174.228 – 10.0.174.229	10.0.174.229
116	10.0.174.230/31	10.0.174.230 – 10.0.174.231	10.0.174.231
117	10.0.174.232/31	10.0.174.232 – 10.0.174.233	10.0.174.233
118	10.0.174.234/31	10.0.174.234 – 10.0.174.235	10.0.174.235
119	10.0.174.236/31	10.0.174.236 – 10.0.174.237	10.0.174.237
120	10.0.174.238/31	10.0.174.238 – 10.0.174.239	10.0.174.239
121	10.0.174.240/31	10.0.174.240 – 10.0.174.241	10.0.174.241
122	10.0.174.242/31	10.0.174.242 – 10.0.174.243	10.0.174.243
123	10.0.174.244/31	10.0.174.244 – 10.0.174.245	10.0.174.245
124	10.0.174.246/31	10.0.174.246 – 10.0.174.247	10.0.174.247
125	10.0.174.248/31	10.0.174.248 – 10.0.174.249	10.0.174.249
126	10.0.174.250/31	10.0.174.250 – 10.0.174.251	10.0.174.251
127	10.0.174.252/31	10.0.174.252 – 10.0.174.253	10.0.174.253
128	10.0.174.254/31	10.0.174.254 – 10.0.174.255	10.0.174.255
129	10.0.175.0/31	10.0.175.0 – 10.0.175.1	10.0.175.1
130	10.0.175.2/31	10.0.175.2 – 10.0.175.3	10.0.175.3
131	10.0.175.4/31	10.0.175.4 – 10.0.175.5	10.0.175.5
132	10.0.175.6/31	10.0.175.6 – 10.0.175.7	10.0.175.7
133	10.0.175.8/31	10.0.175.8 – 10.0.175.9	10.0.175.9
134	10.0.175.10/31	10.0.175.10 – 10.0.175.11	10.0.175.11
135	10.0.175.12/31	10.0.175.12 – 10.0.175.13	10.0.175.13
136	10.0.175.14/31	10.0.175.14 – 10.0.175.15	10.0.175.15
137	10.0.175.16/31	10.0.175.16 – 10.0.175.17	10.0.175.17
138	10.0.175.18/31	10.0.175.18 – 10.0.175.19	10.0.175.19
139	10.0.175.20/31	10.0.175.20 – 10.0.175.21	10.0.175.21
140	10.0.175.22/31	10.0.175.22 – 10.0.175.23	10.0.175.23
141	10.0.175.24/31	10.0.175.24 – 10.0.175.25	10.0.175.25
142	10.0.175.26/31	10.0.175.26 – 10.0.175.27	10.0.175.27
143	10.0.175.28/31	10.0.175.28 – 10.0.175.29	10.0.175.29
144	10.0.175.30/31	10.0.175.30 – 10.0.175.31	10.0.175.31
145	10.0.175.32/31	10.0.175.32 – 10.0.175.33	10.0.175.33
146	10.0.175.34/31	10.0.175.34 – 10.0.175.35	10.0.175.35
147	10.0.175.36/31	10.0.175.36 – 10.0.175.37	10.0.175.37
148	10.0.175.38/31	10.0.175.38 – 10.0.175.39	10.0.175.39
149	10.0.175.40/31	10.0.175.40 – 10.0.175.41	10.0.175.41
150	10.0.175.42/31	10.0.175.42 – 10.0.175.43	10.0.175.43
151	10.0.175.44/31	10.0.175.44 – 10.0.175.45	10.0.175.45
152	10.0.175.46/31	10.0.175.46 – 10.0.175.47	10.0.175.47
153	10.0.175.48/31	10.0.175.48 – 10.0.175.49	10.0.175.49
154	10.0.175.50/31	10.0.175.50 – 10.0.175.51	10.0.175.51
155	10.0.175.52/31	10.0.175.52 – 10.0.175.53	10.0.175.53
156	10.0.175.54/31	10.0.175.54 – 10.0.175.55	10.0.175.55
157	10.0.175.56/31	10.0.175.56 – 10.0.175.57	10.0.175.57
158	10.0.175.58/31	10.0.175.58 – 10.0.175.59	10.0.175.59
159	10.0.175.60/31	10.0.175.60 – 10.0.175.61	10.0.175.61
160	10.0.175.62/31	10.0.175.62 – 10.0.175.63	10.0.175.63
161	10.0.175.64/31	10.0.175.64 – 10.0.175.65	10.0.175.65
162	10.0.175.66/31	10.0.175.66 – 10.0.175.67	10.0.175.67
163	10.0.175.68/31	10.0.175.68 – 10.0.175.69	10.0.175.69
164	10.0.175.70/31	10.0.175.70 – 10.0.175.71	10.0.175.71
165	10.0.175.72/31	10.0.175.72 – 10.0.175.73	10.0.175.73
166	10.0.175.74/31	10.0.175.74 – 10.0.175.75	10.0.175.75
167	10.0.175.76/31	10.0.175.76 – 10.0.175.77	10.0.175.77
168	10.0.175.78/31	10.0.175.78 – 10.0.175.79	10.0.175.79
169	10.0.175.80/31	10.0.175.80 – 10.0.175.81	10.0.175.81
170	10.0.175.82/31	10.0.175.82 – 10.0.175.83	10.0.175.83
171	10.0.175.84/31	10.0.175.84 – 10.0.175.85	10.0.175.85
172	10.0.175.86/31	10.0.175.86 – 10.0.175.87	10.0.175.87
173	10.0.175.88/31	10.0.175.88 – 10.0.175.89	10.0.175.89
174	10.0.175.90/31	10.0.175.90 – 10.0.175.91	10.0.175.91
175	10.0.175.92/31	10.0.175.92 – 10.0.175.93	10.0.175.93
176	10.0.175.94/31	10.0.175.94 – 10.0.175.95	10.0.175.95
177	10.0.175.96/31	10.0.175.96 – 10.0.175.97	10.0.175.97
178	10.0.175.98/31	10.0.175.98 – 10.0.175.99	10.0.175.99
179	10.0.175.100/31	10.0.175.100 – 10.0.175.101	10.0.175.101
180	10.0.175.102/31	10.0.175.102 – 10.0.175.103	10.0.175.103
181	10.0.175.104/31	10.0.175.104 – 10.0.175.105	10.0.175.105
182	10.0.175.106/31	10.0.175.106 – 10.0.175.107	10.0.175.107
183	10.0.175.108/31	10.0.175.108 – 10.0.175.109	10.0.175.109
184	10.0.175.110/31	10.0.175.110 – 10.0.175.111	10.0.175.111
185	10.0.175.112/31	10.0.175.112 – 10.0.175.113	10.0.175.113
186	10.0.175.114/31	10.0.175.114 – 10.0.175.115	10.0.175.115
187	10.0.175.116/31	10.0.175.116 – 10.0.175.117	10.0.175.117
188	10.0.175.118/31	10.0.175.118 – 10.0.175.119	10.0.175.119
189	10.0.175.120/31	10.0.175.120 – 10.0.175.121	10.0.175.121
190	10.0.175.122/31	10.0.175.122 – 10.0.175.123	10.0.175.123
191	10.0.175.124/31	10.0.175.124 – 10.0.175.125	10.0.175.125
192	10.0.175.126/31	10.0.175.126 – 10.0.175.127	10.0.175.127
193	10.0.175.128/31	10.0.175.128 – 10.0.175.129	10.0.175.129
194	10.0.175.130/31	10.0.175.130 – 10.0.175.131	10.0.175.131
195	10.0.175.132/31	10.0.175.132 – 10.0.175.133	10.0.175.133
196	10.0.175.134/31	10.0.175.134 – 10.0.175.135	10.0.175.135
197	10.0.175.136/31	10.0.175.136 – 10.0.175.137	10.0.175.137
198	10.0.175.138/31	10.0.175.138 – 10.0.175.139	10.0.175.139
199	10.0.175.140/31	10.0.175.140 – 10.0.175.141	10.0.175.141
200	10.0.175.142/31	10.0.175.142 – 10.0.175.143	10.0.175.143
201	10.0.175.144/31	10.0.175.144 – 10.0.175.145	10.0.175.145
202	10.0.175.146/31	10.0.175.146 – 10.0.175.147	10.0.175.147
203	10.0.175.148/31	10.0.175.148 – 10.0.175.149	10.0.175.149
204	10.0.175.150/31	10.0.175.150 – 10.0.175.151	10.0.175.151
205	10.0.175.152/31	10.0.175.152 – 10.0.175.153	10.0.175.153
206	10.0.175.154/31	10.0.175.154 – 10.0.175.155	10.0.175.155
207	10.0.175.156/31	10.0.175.156 – 10.0.175.157	10.0.175.157
208	10.0.175.158/31	10.0.175.158 – 10.0.175.159	10.0.175.159
209	10.0.175.160/31	10.0.175.160 – 10.0.175.161	10.0.175.161
210	10.0.175.162/31	10.0.175.162 – 10.0.175.163	10.0.175.163
211	10.0.175.164/31	10.0.175.164 – 10.0.175.165	10.0.175.165
212	10.0.175.166/31	10.0.175.166 – 10.0.175.167	10.0.175.167
213	10.0.175.168/31	10.0.175.168 – 10.0.175.169	10.0.175.169
214	10.0.175.170/31	10.0.175.170 – 10.0.175.171	10.0.175.171
215	10.0.175.172/31	10.0.175.172 – 10.0.175.173	10.0.175.173
216	10.0.175.174/31	10.0.175.174 – 10.0.175.175	10.0.175.175
217	10.0.175.176/31	10.0.175.176 – 10.0.175.177	10.0.175.177
218	10.0.175.178/31	10.0.175.178 – 10.0.175.179	10.0.175.179
219	10.0.175.180/31	10.0.175.180 – 10.0.175.181	10.0.175.181
220	10.0.175.182/31	10.0.175.182 – 10.0.175.183	10.0.175.183
221	10.0.175.184/31	10.0.175.184 – 10.0.175.185	10.0.175.185
222	10.0.175.186/31	10.0.175.186 – 10.0.175.187	10.0.175.187
223	10.0.175.188/31	10.0.175.188 – 10.0.175.189	10.0.175.189
224	10.0.175.190/31	10.0.175.190 – 10.0.175.191	10.0.175.191
225	10.0.175.192/31	10.0.175.192 – 10.0.175.193	10.0.175.193
226	10.0.175.194/31	10.0.175.194 – 10.0.175.195	10.0.175.195
227	10.0.175.196/31	10.0.175.196 – 10.0.175.197	10.0.175.197
228	10.0.175.198/31	10.0.175.198 – 10.0.175.199	10.0.175.199
229	10.0.175.200/31	10.0.175.200 – 10.0.175.201	10.0.175.201
230	10.0.175.202/31	10.0.175.202 – 10.0.175.203	10.0.175.203
231	10.0.175.204/31	10.0.175.204 – 10.0.175.205	10.0.175.205
232	10.0.175.206/31	10.0.175.206 – 10.0.175.207	10.0.175.207
233	10.0.175.208/31	10.0.175.208 – 10.0.175.209	10.0.175.209
234	10.0.175.210/31	10.0.175.210 – 10.0.175.211	10.0.175.211
235	10.0.175.212/31	10.0.175.212 – 10.0.175.213	10.0.175.213
236	10.0.175.214/31	10.0.175.214 – 10.0.175.215	10.0.175.215
237	10.0.175.216/31	10.0.175.216 – 10.0.175.217	10.0.175.217
238	10.0.175.218/31	10.0.175.218 – 10.0.175.219	10.0.175.219
239	10.0.175.220/31	10.0.175.220 – 10.0.175.221	10.0.175.221
240	10.0.175.222/31	10.0.175.222 – 10.0.175.223	10.0.175.223
241	10.0.175.224/31	10.0.175.224 – 10.0.175.225	10.0.175.225
242	10.0.175.226/31	10.0.175.226 – 10.0.175.227	10.0.175.227
243	10.0.175.228/31	10.0.175.228 – 10.0.175.229	10.0.175.229
244	10.0.175.230/31	10.0.175.230 – 10.0.175.231	10.0.175.231
245	10.0.175.232/31	10.0.175.232 – 10.0.175.233	10.0.175.233
246	10.0.175.234/31	10.0.175.234 – 10.0.175.235	10.0.175.235
247	10.0.175.236/31	10.0.175.236 – 10.0.175.237	10.0.175.237
248	10.0.175.238/31	10.0.175.238 – 10.0.175.239	10.0.175.239
249	10.0.175.240/31	10.0.175.240 – 10.0.175.241	10.0.175.241
250	10.0.175.242/31	10.0.175.242 – 10.0.175.243	10.0.175.243
251	10.0.175.244/31	10.0.175.244 – 10.0.175.245	10.0.175.245
252	10.0.175.246/31	10.0.175.246 – 10.0.175.247	10.0.175.247
253	10.0.175.248/31	10.0.175.248 – 10.0.175.249	10.0.175.249
254	10.0.175.250/31	10.0.175.250 – 10.0.175.251	10.0.175.251
255	10.0.175.252/31	10.0.175.252 – 10.0.175.253	10.0.175.253
256	10.0.175.254/31	10.0.175.254 – 10.0.175.255	10.0.175.255

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 →