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)10.149.148.0/22

network10.149.148.0/22

broadcast10.149.151.255

first host10.149.148.1

last host10.149.151.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.149.148.0/22

address00001010.10010101.10010100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.10010101.10010100.00000000

broadcast00001010.10010101.10010111.11111111

green = network part, grey = host part

hex0x0a959400

decimal177574912

reverse dns0.148.149.10.in-addr.arpa

ipv4-mapped::ffff:a95:9400

/22 split into /31 · 512 subnets

close ×

#	network	host range	broadcast
1	10.149.148.0/31	10.149.148.0 – 10.149.148.1	10.149.148.1
2	10.149.148.2/31	10.149.148.2 – 10.149.148.3	10.149.148.3
3	10.149.148.4/31	10.149.148.4 – 10.149.148.5	10.149.148.5
4	10.149.148.6/31	10.149.148.6 – 10.149.148.7	10.149.148.7
5	10.149.148.8/31	10.149.148.8 – 10.149.148.9	10.149.148.9
6	10.149.148.10/31	10.149.148.10 – 10.149.148.11	10.149.148.11
7	10.149.148.12/31	10.149.148.12 – 10.149.148.13	10.149.148.13
8	10.149.148.14/31	10.149.148.14 – 10.149.148.15	10.149.148.15
9	10.149.148.16/31	10.149.148.16 – 10.149.148.17	10.149.148.17
10	10.149.148.18/31	10.149.148.18 – 10.149.148.19	10.149.148.19
11	10.149.148.20/31	10.149.148.20 – 10.149.148.21	10.149.148.21
12	10.149.148.22/31	10.149.148.22 – 10.149.148.23	10.149.148.23
13	10.149.148.24/31	10.149.148.24 – 10.149.148.25	10.149.148.25
14	10.149.148.26/31	10.149.148.26 – 10.149.148.27	10.149.148.27
15	10.149.148.28/31	10.149.148.28 – 10.149.148.29	10.149.148.29
16	10.149.148.30/31	10.149.148.30 – 10.149.148.31	10.149.148.31
17	10.149.148.32/31	10.149.148.32 – 10.149.148.33	10.149.148.33
18	10.149.148.34/31	10.149.148.34 – 10.149.148.35	10.149.148.35
19	10.149.148.36/31	10.149.148.36 – 10.149.148.37	10.149.148.37
20	10.149.148.38/31	10.149.148.38 – 10.149.148.39	10.149.148.39
21	10.149.148.40/31	10.149.148.40 – 10.149.148.41	10.149.148.41
22	10.149.148.42/31	10.149.148.42 – 10.149.148.43	10.149.148.43
23	10.149.148.44/31	10.149.148.44 – 10.149.148.45	10.149.148.45
24	10.149.148.46/31	10.149.148.46 – 10.149.148.47	10.149.148.47
25	10.149.148.48/31	10.149.148.48 – 10.149.148.49	10.149.148.49
26	10.149.148.50/31	10.149.148.50 – 10.149.148.51	10.149.148.51
27	10.149.148.52/31	10.149.148.52 – 10.149.148.53	10.149.148.53
28	10.149.148.54/31	10.149.148.54 – 10.149.148.55	10.149.148.55
29	10.149.148.56/31	10.149.148.56 – 10.149.148.57	10.149.148.57
30	10.149.148.58/31	10.149.148.58 – 10.149.148.59	10.149.148.59
31	10.149.148.60/31	10.149.148.60 – 10.149.148.61	10.149.148.61
32	10.149.148.62/31	10.149.148.62 – 10.149.148.63	10.149.148.63
33	10.149.148.64/31	10.149.148.64 – 10.149.148.65	10.149.148.65
34	10.149.148.66/31	10.149.148.66 – 10.149.148.67	10.149.148.67
35	10.149.148.68/31	10.149.148.68 – 10.149.148.69	10.149.148.69
36	10.149.148.70/31	10.149.148.70 – 10.149.148.71	10.149.148.71
37	10.149.148.72/31	10.149.148.72 – 10.149.148.73	10.149.148.73
38	10.149.148.74/31	10.149.148.74 – 10.149.148.75	10.149.148.75
39	10.149.148.76/31	10.149.148.76 – 10.149.148.77	10.149.148.77
40	10.149.148.78/31	10.149.148.78 – 10.149.148.79	10.149.148.79
41	10.149.148.80/31	10.149.148.80 – 10.149.148.81	10.149.148.81
42	10.149.148.82/31	10.149.148.82 – 10.149.148.83	10.149.148.83
43	10.149.148.84/31	10.149.148.84 – 10.149.148.85	10.149.148.85
44	10.149.148.86/31	10.149.148.86 – 10.149.148.87	10.149.148.87
45	10.149.148.88/31	10.149.148.88 – 10.149.148.89	10.149.148.89
46	10.149.148.90/31	10.149.148.90 – 10.149.148.91	10.149.148.91
47	10.149.148.92/31	10.149.148.92 – 10.149.148.93	10.149.148.93
48	10.149.148.94/31	10.149.148.94 – 10.149.148.95	10.149.148.95
49	10.149.148.96/31	10.149.148.96 – 10.149.148.97	10.149.148.97
50	10.149.148.98/31	10.149.148.98 – 10.149.148.99	10.149.148.99
51	10.149.148.100/31	10.149.148.100 – 10.149.148.101	10.149.148.101
52	10.149.148.102/31	10.149.148.102 – 10.149.148.103	10.149.148.103
53	10.149.148.104/31	10.149.148.104 – 10.149.148.105	10.149.148.105
54	10.149.148.106/31	10.149.148.106 – 10.149.148.107	10.149.148.107
55	10.149.148.108/31	10.149.148.108 – 10.149.148.109	10.149.148.109
56	10.149.148.110/31	10.149.148.110 – 10.149.148.111	10.149.148.111
57	10.149.148.112/31	10.149.148.112 – 10.149.148.113	10.149.148.113
58	10.149.148.114/31	10.149.148.114 – 10.149.148.115	10.149.148.115
59	10.149.148.116/31	10.149.148.116 – 10.149.148.117	10.149.148.117
60	10.149.148.118/31	10.149.148.118 – 10.149.148.119	10.149.148.119
61	10.149.148.120/31	10.149.148.120 – 10.149.148.121	10.149.148.121
62	10.149.148.122/31	10.149.148.122 – 10.149.148.123	10.149.148.123
63	10.149.148.124/31	10.149.148.124 – 10.149.148.125	10.149.148.125
64	10.149.148.126/31	10.149.148.126 – 10.149.148.127	10.149.148.127
65	10.149.148.128/31	10.149.148.128 – 10.149.148.129	10.149.148.129
66	10.149.148.130/31	10.149.148.130 – 10.149.148.131	10.149.148.131
67	10.149.148.132/31	10.149.148.132 – 10.149.148.133	10.149.148.133
68	10.149.148.134/31	10.149.148.134 – 10.149.148.135	10.149.148.135
69	10.149.148.136/31	10.149.148.136 – 10.149.148.137	10.149.148.137
70	10.149.148.138/31	10.149.148.138 – 10.149.148.139	10.149.148.139
71	10.149.148.140/31	10.149.148.140 – 10.149.148.141	10.149.148.141
72	10.149.148.142/31	10.149.148.142 – 10.149.148.143	10.149.148.143
73	10.149.148.144/31	10.149.148.144 – 10.149.148.145	10.149.148.145
74	10.149.148.146/31	10.149.148.146 – 10.149.148.147	10.149.148.147
75	10.149.148.148/31	10.149.148.148 – 10.149.148.149	10.149.148.149
76	10.149.148.150/31	10.149.148.150 – 10.149.148.151	10.149.148.151
77	10.149.148.152/31	10.149.148.152 – 10.149.148.153	10.149.148.153
78	10.149.148.154/31	10.149.148.154 – 10.149.148.155	10.149.148.155
79	10.149.148.156/31	10.149.148.156 – 10.149.148.157	10.149.148.157
80	10.149.148.158/31	10.149.148.158 – 10.149.148.159	10.149.148.159
81	10.149.148.160/31	10.149.148.160 – 10.149.148.161	10.149.148.161
82	10.149.148.162/31	10.149.148.162 – 10.149.148.163	10.149.148.163
83	10.149.148.164/31	10.149.148.164 – 10.149.148.165	10.149.148.165
84	10.149.148.166/31	10.149.148.166 – 10.149.148.167	10.149.148.167
85	10.149.148.168/31	10.149.148.168 – 10.149.148.169	10.149.148.169
86	10.149.148.170/31	10.149.148.170 – 10.149.148.171	10.149.148.171
87	10.149.148.172/31	10.149.148.172 – 10.149.148.173	10.149.148.173
88	10.149.148.174/31	10.149.148.174 – 10.149.148.175	10.149.148.175
89	10.149.148.176/31	10.149.148.176 – 10.149.148.177	10.149.148.177
90	10.149.148.178/31	10.149.148.178 – 10.149.148.179	10.149.148.179
91	10.149.148.180/31	10.149.148.180 – 10.149.148.181	10.149.148.181
92	10.149.148.182/31	10.149.148.182 – 10.149.148.183	10.149.148.183
93	10.149.148.184/31	10.149.148.184 – 10.149.148.185	10.149.148.185
94	10.149.148.186/31	10.149.148.186 – 10.149.148.187	10.149.148.187
95	10.149.148.188/31	10.149.148.188 – 10.149.148.189	10.149.148.189
96	10.149.148.190/31	10.149.148.190 – 10.149.148.191	10.149.148.191
97	10.149.148.192/31	10.149.148.192 – 10.149.148.193	10.149.148.193
98	10.149.148.194/31	10.149.148.194 – 10.149.148.195	10.149.148.195
99	10.149.148.196/31	10.149.148.196 – 10.149.148.197	10.149.148.197
100	10.149.148.198/31	10.149.148.198 – 10.149.148.199	10.149.148.199
101	10.149.148.200/31	10.149.148.200 – 10.149.148.201	10.149.148.201
102	10.149.148.202/31	10.149.148.202 – 10.149.148.203	10.149.148.203
103	10.149.148.204/31	10.149.148.204 – 10.149.148.205	10.149.148.205
104	10.149.148.206/31	10.149.148.206 – 10.149.148.207	10.149.148.207
105	10.149.148.208/31	10.149.148.208 – 10.149.148.209	10.149.148.209
106	10.149.148.210/31	10.149.148.210 – 10.149.148.211	10.149.148.211
107	10.149.148.212/31	10.149.148.212 – 10.149.148.213	10.149.148.213
108	10.149.148.214/31	10.149.148.214 – 10.149.148.215	10.149.148.215
109	10.149.148.216/31	10.149.148.216 – 10.149.148.217	10.149.148.217
110	10.149.148.218/31	10.149.148.218 – 10.149.148.219	10.149.148.219
111	10.149.148.220/31	10.149.148.220 – 10.149.148.221	10.149.148.221
112	10.149.148.222/31	10.149.148.222 – 10.149.148.223	10.149.148.223
113	10.149.148.224/31	10.149.148.224 – 10.149.148.225	10.149.148.225
114	10.149.148.226/31	10.149.148.226 – 10.149.148.227	10.149.148.227
115	10.149.148.228/31	10.149.148.228 – 10.149.148.229	10.149.148.229
116	10.149.148.230/31	10.149.148.230 – 10.149.148.231	10.149.148.231
117	10.149.148.232/31	10.149.148.232 – 10.149.148.233	10.149.148.233
118	10.149.148.234/31	10.149.148.234 – 10.149.148.235	10.149.148.235
119	10.149.148.236/31	10.149.148.236 – 10.149.148.237	10.149.148.237
120	10.149.148.238/31	10.149.148.238 – 10.149.148.239	10.149.148.239
121	10.149.148.240/31	10.149.148.240 – 10.149.148.241	10.149.148.241
122	10.149.148.242/31	10.149.148.242 – 10.149.148.243	10.149.148.243
123	10.149.148.244/31	10.149.148.244 – 10.149.148.245	10.149.148.245
124	10.149.148.246/31	10.149.148.246 – 10.149.148.247	10.149.148.247
125	10.149.148.248/31	10.149.148.248 – 10.149.148.249	10.149.148.249
126	10.149.148.250/31	10.149.148.250 – 10.149.148.251	10.149.148.251
127	10.149.148.252/31	10.149.148.252 – 10.149.148.253	10.149.148.253
128	10.149.148.254/31	10.149.148.254 – 10.149.148.255	10.149.148.255
129	10.149.149.0/31	10.149.149.0 – 10.149.149.1	10.149.149.1
130	10.149.149.2/31	10.149.149.2 – 10.149.149.3	10.149.149.3
131	10.149.149.4/31	10.149.149.4 – 10.149.149.5	10.149.149.5
132	10.149.149.6/31	10.149.149.6 – 10.149.149.7	10.149.149.7
133	10.149.149.8/31	10.149.149.8 – 10.149.149.9	10.149.149.9
134	10.149.149.10/31	10.149.149.10 – 10.149.149.11	10.149.149.11
135	10.149.149.12/31	10.149.149.12 – 10.149.149.13	10.149.149.13
136	10.149.149.14/31	10.149.149.14 – 10.149.149.15	10.149.149.15
137	10.149.149.16/31	10.149.149.16 – 10.149.149.17	10.149.149.17
138	10.149.149.18/31	10.149.149.18 – 10.149.149.19	10.149.149.19
139	10.149.149.20/31	10.149.149.20 – 10.149.149.21	10.149.149.21
140	10.149.149.22/31	10.149.149.22 – 10.149.149.23	10.149.149.23
141	10.149.149.24/31	10.149.149.24 – 10.149.149.25	10.149.149.25
142	10.149.149.26/31	10.149.149.26 – 10.149.149.27	10.149.149.27
143	10.149.149.28/31	10.149.149.28 – 10.149.149.29	10.149.149.29
144	10.149.149.30/31	10.149.149.30 – 10.149.149.31	10.149.149.31
145	10.149.149.32/31	10.149.149.32 – 10.149.149.33	10.149.149.33
146	10.149.149.34/31	10.149.149.34 – 10.149.149.35	10.149.149.35
147	10.149.149.36/31	10.149.149.36 – 10.149.149.37	10.149.149.37
148	10.149.149.38/31	10.149.149.38 – 10.149.149.39	10.149.149.39
149	10.149.149.40/31	10.149.149.40 – 10.149.149.41	10.149.149.41
150	10.149.149.42/31	10.149.149.42 – 10.149.149.43	10.149.149.43
151	10.149.149.44/31	10.149.149.44 – 10.149.149.45	10.149.149.45
152	10.149.149.46/31	10.149.149.46 – 10.149.149.47	10.149.149.47
153	10.149.149.48/31	10.149.149.48 – 10.149.149.49	10.149.149.49
154	10.149.149.50/31	10.149.149.50 – 10.149.149.51	10.149.149.51
155	10.149.149.52/31	10.149.149.52 – 10.149.149.53	10.149.149.53
156	10.149.149.54/31	10.149.149.54 – 10.149.149.55	10.149.149.55
157	10.149.149.56/31	10.149.149.56 – 10.149.149.57	10.149.149.57
158	10.149.149.58/31	10.149.149.58 – 10.149.149.59	10.149.149.59
159	10.149.149.60/31	10.149.149.60 – 10.149.149.61	10.149.149.61
160	10.149.149.62/31	10.149.149.62 – 10.149.149.63	10.149.149.63
161	10.149.149.64/31	10.149.149.64 – 10.149.149.65	10.149.149.65
162	10.149.149.66/31	10.149.149.66 – 10.149.149.67	10.149.149.67
163	10.149.149.68/31	10.149.149.68 – 10.149.149.69	10.149.149.69
164	10.149.149.70/31	10.149.149.70 – 10.149.149.71	10.149.149.71
165	10.149.149.72/31	10.149.149.72 – 10.149.149.73	10.149.149.73
166	10.149.149.74/31	10.149.149.74 – 10.149.149.75	10.149.149.75
167	10.149.149.76/31	10.149.149.76 – 10.149.149.77	10.149.149.77
168	10.149.149.78/31	10.149.149.78 – 10.149.149.79	10.149.149.79
169	10.149.149.80/31	10.149.149.80 – 10.149.149.81	10.149.149.81
170	10.149.149.82/31	10.149.149.82 – 10.149.149.83	10.149.149.83
171	10.149.149.84/31	10.149.149.84 – 10.149.149.85	10.149.149.85
172	10.149.149.86/31	10.149.149.86 – 10.149.149.87	10.149.149.87
173	10.149.149.88/31	10.149.149.88 – 10.149.149.89	10.149.149.89
174	10.149.149.90/31	10.149.149.90 – 10.149.149.91	10.149.149.91
175	10.149.149.92/31	10.149.149.92 – 10.149.149.93	10.149.149.93
176	10.149.149.94/31	10.149.149.94 – 10.149.149.95	10.149.149.95
177	10.149.149.96/31	10.149.149.96 – 10.149.149.97	10.149.149.97
178	10.149.149.98/31	10.149.149.98 – 10.149.149.99	10.149.149.99
179	10.149.149.100/31	10.149.149.100 – 10.149.149.101	10.149.149.101
180	10.149.149.102/31	10.149.149.102 – 10.149.149.103	10.149.149.103
181	10.149.149.104/31	10.149.149.104 – 10.149.149.105	10.149.149.105
182	10.149.149.106/31	10.149.149.106 – 10.149.149.107	10.149.149.107
183	10.149.149.108/31	10.149.149.108 – 10.149.149.109	10.149.149.109
184	10.149.149.110/31	10.149.149.110 – 10.149.149.111	10.149.149.111
185	10.149.149.112/31	10.149.149.112 – 10.149.149.113	10.149.149.113
186	10.149.149.114/31	10.149.149.114 – 10.149.149.115	10.149.149.115
187	10.149.149.116/31	10.149.149.116 – 10.149.149.117	10.149.149.117
188	10.149.149.118/31	10.149.149.118 – 10.149.149.119	10.149.149.119
189	10.149.149.120/31	10.149.149.120 – 10.149.149.121	10.149.149.121
190	10.149.149.122/31	10.149.149.122 – 10.149.149.123	10.149.149.123
191	10.149.149.124/31	10.149.149.124 – 10.149.149.125	10.149.149.125
192	10.149.149.126/31	10.149.149.126 – 10.149.149.127	10.149.149.127
193	10.149.149.128/31	10.149.149.128 – 10.149.149.129	10.149.149.129
194	10.149.149.130/31	10.149.149.130 – 10.149.149.131	10.149.149.131
195	10.149.149.132/31	10.149.149.132 – 10.149.149.133	10.149.149.133
196	10.149.149.134/31	10.149.149.134 – 10.149.149.135	10.149.149.135
197	10.149.149.136/31	10.149.149.136 – 10.149.149.137	10.149.149.137
198	10.149.149.138/31	10.149.149.138 – 10.149.149.139	10.149.149.139
199	10.149.149.140/31	10.149.149.140 – 10.149.149.141	10.149.149.141
200	10.149.149.142/31	10.149.149.142 – 10.149.149.143	10.149.149.143
201	10.149.149.144/31	10.149.149.144 – 10.149.149.145	10.149.149.145
202	10.149.149.146/31	10.149.149.146 – 10.149.149.147	10.149.149.147
203	10.149.149.148/31	10.149.149.148 – 10.149.149.149	10.149.149.149
204	10.149.149.150/31	10.149.149.150 – 10.149.149.151	10.149.149.151
205	10.149.149.152/31	10.149.149.152 – 10.149.149.153	10.149.149.153
206	10.149.149.154/31	10.149.149.154 – 10.149.149.155	10.149.149.155
207	10.149.149.156/31	10.149.149.156 – 10.149.149.157	10.149.149.157
208	10.149.149.158/31	10.149.149.158 – 10.149.149.159	10.149.149.159
209	10.149.149.160/31	10.149.149.160 – 10.149.149.161	10.149.149.161
210	10.149.149.162/31	10.149.149.162 – 10.149.149.163	10.149.149.163
211	10.149.149.164/31	10.149.149.164 – 10.149.149.165	10.149.149.165
212	10.149.149.166/31	10.149.149.166 – 10.149.149.167	10.149.149.167
213	10.149.149.168/31	10.149.149.168 – 10.149.149.169	10.149.149.169
214	10.149.149.170/31	10.149.149.170 – 10.149.149.171	10.149.149.171
215	10.149.149.172/31	10.149.149.172 – 10.149.149.173	10.149.149.173
216	10.149.149.174/31	10.149.149.174 – 10.149.149.175	10.149.149.175
217	10.149.149.176/31	10.149.149.176 – 10.149.149.177	10.149.149.177
218	10.149.149.178/31	10.149.149.178 – 10.149.149.179	10.149.149.179
219	10.149.149.180/31	10.149.149.180 – 10.149.149.181	10.149.149.181
220	10.149.149.182/31	10.149.149.182 – 10.149.149.183	10.149.149.183
221	10.149.149.184/31	10.149.149.184 – 10.149.149.185	10.149.149.185
222	10.149.149.186/31	10.149.149.186 – 10.149.149.187	10.149.149.187
223	10.149.149.188/31	10.149.149.188 – 10.149.149.189	10.149.149.189
224	10.149.149.190/31	10.149.149.190 – 10.149.149.191	10.149.149.191
225	10.149.149.192/31	10.149.149.192 – 10.149.149.193	10.149.149.193
226	10.149.149.194/31	10.149.149.194 – 10.149.149.195	10.149.149.195
227	10.149.149.196/31	10.149.149.196 – 10.149.149.197	10.149.149.197
228	10.149.149.198/31	10.149.149.198 – 10.149.149.199	10.149.149.199
229	10.149.149.200/31	10.149.149.200 – 10.149.149.201	10.149.149.201
230	10.149.149.202/31	10.149.149.202 – 10.149.149.203	10.149.149.203
231	10.149.149.204/31	10.149.149.204 – 10.149.149.205	10.149.149.205
232	10.149.149.206/31	10.149.149.206 – 10.149.149.207	10.149.149.207
233	10.149.149.208/31	10.149.149.208 – 10.149.149.209	10.149.149.209
234	10.149.149.210/31	10.149.149.210 – 10.149.149.211	10.149.149.211
235	10.149.149.212/31	10.149.149.212 – 10.149.149.213	10.149.149.213
236	10.149.149.214/31	10.149.149.214 – 10.149.149.215	10.149.149.215
237	10.149.149.216/31	10.149.149.216 – 10.149.149.217	10.149.149.217
238	10.149.149.218/31	10.149.149.218 – 10.149.149.219	10.149.149.219
239	10.149.149.220/31	10.149.149.220 – 10.149.149.221	10.149.149.221
240	10.149.149.222/31	10.149.149.222 – 10.149.149.223	10.149.149.223
241	10.149.149.224/31	10.149.149.224 – 10.149.149.225	10.149.149.225
242	10.149.149.226/31	10.149.149.226 – 10.149.149.227	10.149.149.227
243	10.149.149.228/31	10.149.149.228 – 10.149.149.229	10.149.149.229
244	10.149.149.230/31	10.149.149.230 – 10.149.149.231	10.149.149.231
245	10.149.149.232/31	10.149.149.232 – 10.149.149.233	10.149.149.233
246	10.149.149.234/31	10.149.149.234 – 10.149.149.235	10.149.149.235
247	10.149.149.236/31	10.149.149.236 – 10.149.149.237	10.149.149.237
248	10.149.149.238/31	10.149.149.238 – 10.149.149.239	10.149.149.239
249	10.149.149.240/31	10.149.149.240 – 10.149.149.241	10.149.149.241
250	10.149.149.242/31	10.149.149.242 – 10.149.149.243	10.149.149.243
251	10.149.149.244/31	10.149.149.244 – 10.149.149.245	10.149.149.245
252	10.149.149.246/31	10.149.149.246 – 10.149.149.247	10.149.149.247
253	10.149.149.248/31	10.149.149.248 – 10.149.149.249	10.149.149.249
254	10.149.149.250/31	10.149.149.250 – 10.149.149.251	10.149.149.251
255	10.149.149.252/31	10.149.149.252 – 10.149.149.253	10.149.149.253
256	10.149.149.254/31	10.149.149.254 – 10.149.149.255	10.149.149.255

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 →