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)10.3.228.0/22

network10.3.228.0/22

broadcast10.3.231.255

first host10.3.228.1

last host10.3.231.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.3.228.0/22

address00001010.00000011.11100100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000011.11100100.00000000

broadcast00001010.00000011.11100111.11111111

green = network part, grey = host part

hex0x0a03e400

decimal168027136

reverse dns0.228.3.10.in-addr.arpa

ipv4-mapped::ffff:a03:e400

/22 split into /31 · 512 subnets

close ×

#	network	host range	broadcast
1	10.3.228.0/31	10.3.228.0 – 10.3.228.1	10.3.228.1
2	10.3.228.2/31	10.3.228.2 – 10.3.228.3	10.3.228.3
3	10.3.228.4/31	10.3.228.4 – 10.3.228.5	10.3.228.5
4	10.3.228.6/31	10.3.228.6 – 10.3.228.7	10.3.228.7
5	10.3.228.8/31	10.3.228.8 – 10.3.228.9	10.3.228.9
6	10.3.228.10/31	10.3.228.10 – 10.3.228.11	10.3.228.11
7	10.3.228.12/31	10.3.228.12 – 10.3.228.13	10.3.228.13
8	10.3.228.14/31	10.3.228.14 – 10.3.228.15	10.3.228.15
9	10.3.228.16/31	10.3.228.16 – 10.3.228.17	10.3.228.17
10	10.3.228.18/31	10.3.228.18 – 10.3.228.19	10.3.228.19
11	10.3.228.20/31	10.3.228.20 – 10.3.228.21	10.3.228.21
12	10.3.228.22/31	10.3.228.22 – 10.3.228.23	10.3.228.23
13	10.3.228.24/31	10.3.228.24 – 10.3.228.25	10.3.228.25
14	10.3.228.26/31	10.3.228.26 – 10.3.228.27	10.3.228.27
15	10.3.228.28/31	10.3.228.28 – 10.3.228.29	10.3.228.29
16	10.3.228.30/31	10.3.228.30 – 10.3.228.31	10.3.228.31
17	10.3.228.32/31	10.3.228.32 – 10.3.228.33	10.3.228.33
18	10.3.228.34/31	10.3.228.34 – 10.3.228.35	10.3.228.35
19	10.3.228.36/31	10.3.228.36 – 10.3.228.37	10.3.228.37
20	10.3.228.38/31	10.3.228.38 – 10.3.228.39	10.3.228.39
21	10.3.228.40/31	10.3.228.40 – 10.3.228.41	10.3.228.41
22	10.3.228.42/31	10.3.228.42 – 10.3.228.43	10.3.228.43
23	10.3.228.44/31	10.3.228.44 – 10.3.228.45	10.3.228.45
24	10.3.228.46/31	10.3.228.46 – 10.3.228.47	10.3.228.47
25	10.3.228.48/31	10.3.228.48 – 10.3.228.49	10.3.228.49
26	10.3.228.50/31	10.3.228.50 – 10.3.228.51	10.3.228.51
27	10.3.228.52/31	10.3.228.52 – 10.3.228.53	10.3.228.53
28	10.3.228.54/31	10.3.228.54 – 10.3.228.55	10.3.228.55
29	10.3.228.56/31	10.3.228.56 – 10.3.228.57	10.3.228.57
30	10.3.228.58/31	10.3.228.58 – 10.3.228.59	10.3.228.59
31	10.3.228.60/31	10.3.228.60 – 10.3.228.61	10.3.228.61
32	10.3.228.62/31	10.3.228.62 – 10.3.228.63	10.3.228.63
33	10.3.228.64/31	10.3.228.64 – 10.3.228.65	10.3.228.65
34	10.3.228.66/31	10.3.228.66 – 10.3.228.67	10.3.228.67
35	10.3.228.68/31	10.3.228.68 – 10.3.228.69	10.3.228.69
36	10.3.228.70/31	10.3.228.70 – 10.3.228.71	10.3.228.71
37	10.3.228.72/31	10.3.228.72 – 10.3.228.73	10.3.228.73
38	10.3.228.74/31	10.3.228.74 – 10.3.228.75	10.3.228.75
39	10.3.228.76/31	10.3.228.76 – 10.3.228.77	10.3.228.77
40	10.3.228.78/31	10.3.228.78 – 10.3.228.79	10.3.228.79
41	10.3.228.80/31	10.3.228.80 – 10.3.228.81	10.3.228.81
42	10.3.228.82/31	10.3.228.82 – 10.3.228.83	10.3.228.83
43	10.3.228.84/31	10.3.228.84 – 10.3.228.85	10.3.228.85
44	10.3.228.86/31	10.3.228.86 – 10.3.228.87	10.3.228.87
45	10.3.228.88/31	10.3.228.88 – 10.3.228.89	10.3.228.89
46	10.3.228.90/31	10.3.228.90 – 10.3.228.91	10.3.228.91
47	10.3.228.92/31	10.3.228.92 – 10.3.228.93	10.3.228.93
48	10.3.228.94/31	10.3.228.94 – 10.3.228.95	10.3.228.95
49	10.3.228.96/31	10.3.228.96 – 10.3.228.97	10.3.228.97
50	10.3.228.98/31	10.3.228.98 – 10.3.228.99	10.3.228.99
51	10.3.228.100/31	10.3.228.100 – 10.3.228.101	10.3.228.101
52	10.3.228.102/31	10.3.228.102 – 10.3.228.103	10.3.228.103
53	10.3.228.104/31	10.3.228.104 – 10.3.228.105	10.3.228.105
54	10.3.228.106/31	10.3.228.106 – 10.3.228.107	10.3.228.107
55	10.3.228.108/31	10.3.228.108 – 10.3.228.109	10.3.228.109
56	10.3.228.110/31	10.3.228.110 – 10.3.228.111	10.3.228.111
57	10.3.228.112/31	10.3.228.112 – 10.3.228.113	10.3.228.113
58	10.3.228.114/31	10.3.228.114 – 10.3.228.115	10.3.228.115
59	10.3.228.116/31	10.3.228.116 – 10.3.228.117	10.3.228.117
60	10.3.228.118/31	10.3.228.118 – 10.3.228.119	10.3.228.119
61	10.3.228.120/31	10.3.228.120 – 10.3.228.121	10.3.228.121
62	10.3.228.122/31	10.3.228.122 – 10.3.228.123	10.3.228.123
63	10.3.228.124/31	10.3.228.124 – 10.3.228.125	10.3.228.125
64	10.3.228.126/31	10.3.228.126 – 10.3.228.127	10.3.228.127
65	10.3.228.128/31	10.3.228.128 – 10.3.228.129	10.3.228.129
66	10.3.228.130/31	10.3.228.130 – 10.3.228.131	10.3.228.131
67	10.3.228.132/31	10.3.228.132 – 10.3.228.133	10.3.228.133
68	10.3.228.134/31	10.3.228.134 – 10.3.228.135	10.3.228.135
69	10.3.228.136/31	10.3.228.136 – 10.3.228.137	10.3.228.137
70	10.3.228.138/31	10.3.228.138 – 10.3.228.139	10.3.228.139
71	10.3.228.140/31	10.3.228.140 – 10.3.228.141	10.3.228.141
72	10.3.228.142/31	10.3.228.142 – 10.3.228.143	10.3.228.143
73	10.3.228.144/31	10.3.228.144 – 10.3.228.145	10.3.228.145
74	10.3.228.146/31	10.3.228.146 – 10.3.228.147	10.3.228.147
75	10.3.228.148/31	10.3.228.148 – 10.3.228.149	10.3.228.149
76	10.3.228.150/31	10.3.228.150 – 10.3.228.151	10.3.228.151
77	10.3.228.152/31	10.3.228.152 – 10.3.228.153	10.3.228.153
78	10.3.228.154/31	10.3.228.154 – 10.3.228.155	10.3.228.155
79	10.3.228.156/31	10.3.228.156 – 10.3.228.157	10.3.228.157
80	10.3.228.158/31	10.3.228.158 – 10.3.228.159	10.3.228.159
81	10.3.228.160/31	10.3.228.160 – 10.3.228.161	10.3.228.161
82	10.3.228.162/31	10.3.228.162 – 10.3.228.163	10.3.228.163
83	10.3.228.164/31	10.3.228.164 – 10.3.228.165	10.3.228.165
84	10.3.228.166/31	10.3.228.166 – 10.3.228.167	10.3.228.167
85	10.3.228.168/31	10.3.228.168 – 10.3.228.169	10.3.228.169
86	10.3.228.170/31	10.3.228.170 – 10.3.228.171	10.3.228.171
87	10.3.228.172/31	10.3.228.172 – 10.3.228.173	10.3.228.173
88	10.3.228.174/31	10.3.228.174 – 10.3.228.175	10.3.228.175
89	10.3.228.176/31	10.3.228.176 – 10.3.228.177	10.3.228.177
90	10.3.228.178/31	10.3.228.178 – 10.3.228.179	10.3.228.179
91	10.3.228.180/31	10.3.228.180 – 10.3.228.181	10.3.228.181
92	10.3.228.182/31	10.3.228.182 – 10.3.228.183	10.3.228.183
93	10.3.228.184/31	10.3.228.184 – 10.3.228.185	10.3.228.185
94	10.3.228.186/31	10.3.228.186 – 10.3.228.187	10.3.228.187
95	10.3.228.188/31	10.3.228.188 – 10.3.228.189	10.3.228.189
96	10.3.228.190/31	10.3.228.190 – 10.3.228.191	10.3.228.191
97	10.3.228.192/31	10.3.228.192 – 10.3.228.193	10.3.228.193
98	10.3.228.194/31	10.3.228.194 – 10.3.228.195	10.3.228.195
99	10.3.228.196/31	10.3.228.196 – 10.3.228.197	10.3.228.197
100	10.3.228.198/31	10.3.228.198 – 10.3.228.199	10.3.228.199
101	10.3.228.200/31	10.3.228.200 – 10.3.228.201	10.3.228.201
102	10.3.228.202/31	10.3.228.202 – 10.3.228.203	10.3.228.203
103	10.3.228.204/31	10.3.228.204 – 10.3.228.205	10.3.228.205
104	10.3.228.206/31	10.3.228.206 – 10.3.228.207	10.3.228.207
105	10.3.228.208/31	10.3.228.208 – 10.3.228.209	10.3.228.209
106	10.3.228.210/31	10.3.228.210 – 10.3.228.211	10.3.228.211
107	10.3.228.212/31	10.3.228.212 – 10.3.228.213	10.3.228.213
108	10.3.228.214/31	10.3.228.214 – 10.3.228.215	10.3.228.215
109	10.3.228.216/31	10.3.228.216 – 10.3.228.217	10.3.228.217
110	10.3.228.218/31	10.3.228.218 – 10.3.228.219	10.3.228.219
111	10.3.228.220/31	10.3.228.220 – 10.3.228.221	10.3.228.221
112	10.3.228.222/31	10.3.228.222 – 10.3.228.223	10.3.228.223
113	10.3.228.224/31	10.3.228.224 – 10.3.228.225	10.3.228.225
114	10.3.228.226/31	10.3.228.226 – 10.3.228.227	10.3.228.227
115	10.3.228.228/31	10.3.228.228 – 10.3.228.229	10.3.228.229
116	10.3.228.230/31	10.3.228.230 – 10.3.228.231	10.3.228.231
117	10.3.228.232/31	10.3.228.232 – 10.3.228.233	10.3.228.233
118	10.3.228.234/31	10.3.228.234 – 10.3.228.235	10.3.228.235
119	10.3.228.236/31	10.3.228.236 – 10.3.228.237	10.3.228.237
120	10.3.228.238/31	10.3.228.238 – 10.3.228.239	10.3.228.239
121	10.3.228.240/31	10.3.228.240 – 10.3.228.241	10.3.228.241
122	10.3.228.242/31	10.3.228.242 – 10.3.228.243	10.3.228.243
123	10.3.228.244/31	10.3.228.244 – 10.3.228.245	10.3.228.245
124	10.3.228.246/31	10.3.228.246 – 10.3.228.247	10.3.228.247
125	10.3.228.248/31	10.3.228.248 – 10.3.228.249	10.3.228.249
126	10.3.228.250/31	10.3.228.250 – 10.3.228.251	10.3.228.251
127	10.3.228.252/31	10.3.228.252 – 10.3.228.253	10.3.228.253
128	10.3.228.254/31	10.3.228.254 – 10.3.228.255	10.3.228.255
129	10.3.229.0/31	10.3.229.0 – 10.3.229.1	10.3.229.1
130	10.3.229.2/31	10.3.229.2 – 10.3.229.3	10.3.229.3
131	10.3.229.4/31	10.3.229.4 – 10.3.229.5	10.3.229.5
132	10.3.229.6/31	10.3.229.6 – 10.3.229.7	10.3.229.7
133	10.3.229.8/31	10.3.229.8 – 10.3.229.9	10.3.229.9
134	10.3.229.10/31	10.3.229.10 – 10.3.229.11	10.3.229.11
135	10.3.229.12/31	10.3.229.12 – 10.3.229.13	10.3.229.13
136	10.3.229.14/31	10.3.229.14 – 10.3.229.15	10.3.229.15
137	10.3.229.16/31	10.3.229.16 – 10.3.229.17	10.3.229.17
138	10.3.229.18/31	10.3.229.18 – 10.3.229.19	10.3.229.19
139	10.3.229.20/31	10.3.229.20 – 10.3.229.21	10.3.229.21
140	10.3.229.22/31	10.3.229.22 – 10.3.229.23	10.3.229.23
141	10.3.229.24/31	10.3.229.24 – 10.3.229.25	10.3.229.25
142	10.3.229.26/31	10.3.229.26 – 10.3.229.27	10.3.229.27
143	10.3.229.28/31	10.3.229.28 – 10.3.229.29	10.3.229.29
144	10.3.229.30/31	10.3.229.30 – 10.3.229.31	10.3.229.31
145	10.3.229.32/31	10.3.229.32 – 10.3.229.33	10.3.229.33
146	10.3.229.34/31	10.3.229.34 – 10.3.229.35	10.3.229.35
147	10.3.229.36/31	10.3.229.36 – 10.3.229.37	10.3.229.37
148	10.3.229.38/31	10.3.229.38 – 10.3.229.39	10.3.229.39
149	10.3.229.40/31	10.3.229.40 – 10.3.229.41	10.3.229.41
150	10.3.229.42/31	10.3.229.42 – 10.3.229.43	10.3.229.43
151	10.3.229.44/31	10.3.229.44 – 10.3.229.45	10.3.229.45
152	10.3.229.46/31	10.3.229.46 – 10.3.229.47	10.3.229.47
153	10.3.229.48/31	10.3.229.48 – 10.3.229.49	10.3.229.49
154	10.3.229.50/31	10.3.229.50 – 10.3.229.51	10.3.229.51
155	10.3.229.52/31	10.3.229.52 – 10.3.229.53	10.3.229.53
156	10.3.229.54/31	10.3.229.54 – 10.3.229.55	10.3.229.55
157	10.3.229.56/31	10.3.229.56 – 10.3.229.57	10.3.229.57
158	10.3.229.58/31	10.3.229.58 – 10.3.229.59	10.3.229.59
159	10.3.229.60/31	10.3.229.60 – 10.3.229.61	10.3.229.61
160	10.3.229.62/31	10.3.229.62 – 10.3.229.63	10.3.229.63
161	10.3.229.64/31	10.3.229.64 – 10.3.229.65	10.3.229.65
162	10.3.229.66/31	10.3.229.66 – 10.3.229.67	10.3.229.67
163	10.3.229.68/31	10.3.229.68 – 10.3.229.69	10.3.229.69
164	10.3.229.70/31	10.3.229.70 – 10.3.229.71	10.3.229.71
165	10.3.229.72/31	10.3.229.72 – 10.3.229.73	10.3.229.73
166	10.3.229.74/31	10.3.229.74 – 10.3.229.75	10.3.229.75
167	10.3.229.76/31	10.3.229.76 – 10.3.229.77	10.3.229.77
168	10.3.229.78/31	10.3.229.78 – 10.3.229.79	10.3.229.79
169	10.3.229.80/31	10.3.229.80 – 10.3.229.81	10.3.229.81
170	10.3.229.82/31	10.3.229.82 – 10.3.229.83	10.3.229.83
171	10.3.229.84/31	10.3.229.84 – 10.3.229.85	10.3.229.85
172	10.3.229.86/31	10.3.229.86 – 10.3.229.87	10.3.229.87
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174	10.3.229.90/31	10.3.229.90 – 10.3.229.91	10.3.229.91
175	10.3.229.92/31	10.3.229.92 – 10.3.229.93	10.3.229.93
176	10.3.229.94/31	10.3.229.94 – 10.3.229.95	10.3.229.95
177	10.3.229.96/31	10.3.229.96 – 10.3.229.97	10.3.229.97
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180	10.3.229.102/31	10.3.229.102 – 10.3.229.103	10.3.229.103
181	10.3.229.104/31	10.3.229.104 – 10.3.229.105	10.3.229.105
182	10.3.229.106/31	10.3.229.106 – 10.3.229.107	10.3.229.107
183	10.3.229.108/31	10.3.229.108 – 10.3.229.109	10.3.229.109
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186	10.3.229.114/31	10.3.229.114 – 10.3.229.115	10.3.229.115
187	10.3.229.116/31	10.3.229.116 – 10.3.229.117	10.3.229.117
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196	10.3.229.134/31	10.3.229.134 – 10.3.229.135	10.3.229.135
197	10.3.229.136/31	10.3.229.136 – 10.3.229.137	10.3.229.137
198	10.3.229.138/31	10.3.229.138 – 10.3.229.139	10.3.229.139
199	10.3.229.140/31	10.3.229.140 – 10.3.229.141	10.3.229.141
200	10.3.229.142/31	10.3.229.142 – 10.3.229.143	10.3.229.143
201	10.3.229.144/31	10.3.229.144 – 10.3.229.145	10.3.229.145
202	10.3.229.146/31	10.3.229.146 – 10.3.229.147	10.3.229.147
203	10.3.229.148/31	10.3.229.148 – 10.3.229.149	10.3.229.149
204	10.3.229.150/31	10.3.229.150 – 10.3.229.151	10.3.229.151
205	10.3.229.152/31	10.3.229.152 – 10.3.229.153	10.3.229.153
206	10.3.229.154/31	10.3.229.154 – 10.3.229.155	10.3.229.155
207	10.3.229.156/31	10.3.229.156 – 10.3.229.157	10.3.229.157
208	10.3.229.158/31	10.3.229.158 – 10.3.229.159	10.3.229.159
209	10.3.229.160/31	10.3.229.160 – 10.3.229.161	10.3.229.161
210	10.3.229.162/31	10.3.229.162 – 10.3.229.163	10.3.229.163
211	10.3.229.164/31	10.3.229.164 – 10.3.229.165	10.3.229.165
212	10.3.229.166/31	10.3.229.166 – 10.3.229.167	10.3.229.167
213	10.3.229.168/31	10.3.229.168 – 10.3.229.169	10.3.229.169
214	10.3.229.170/31	10.3.229.170 – 10.3.229.171	10.3.229.171
215	10.3.229.172/31	10.3.229.172 – 10.3.229.173	10.3.229.173
216	10.3.229.174/31	10.3.229.174 – 10.3.229.175	10.3.229.175
217	10.3.229.176/31	10.3.229.176 – 10.3.229.177	10.3.229.177
218	10.3.229.178/31	10.3.229.178 – 10.3.229.179	10.3.229.179
219	10.3.229.180/31	10.3.229.180 – 10.3.229.181	10.3.229.181
220	10.3.229.182/31	10.3.229.182 – 10.3.229.183	10.3.229.183
221	10.3.229.184/31	10.3.229.184 – 10.3.229.185	10.3.229.185
222	10.3.229.186/31	10.3.229.186 – 10.3.229.187	10.3.229.187
223	10.3.229.188/31	10.3.229.188 – 10.3.229.189	10.3.229.189
224	10.3.229.190/31	10.3.229.190 – 10.3.229.191	10.3.229.191
225	10.3.229.192/31	10.3.229.192 – 10.3.229.193	10.3.229.193
226	10.3.229.194/31	10.3.229.194 – 10.3.229.195	10.3.229.195
227	10.3.229.196/31	10.3.229.196 – 10.3.229.197	10.3.229.197
228	10.3.229.198/31	10.3.229.198 – 10.3.229.199	10.3.229.199
229	10.3.229.200/31	10.3.229.200 – 10.3.229.201	10.3.229.201
230	10.3.229.202/31	10.3.229.202 – 10.3.229.203	10.3.229.203
231	10.3.229.204/31	10.3.229.204 – 10.3.229.205	10.3.229.205
232	10.3.229.206/31	10.3.229.206 – 10.3.229.207	10.3.229.207
233	10.3.229.208/31	10.3.229.208 – 10.3.229.209	10.3.229.209
234	10.3.229.210/31	10.3.229.210 – 10.3.229.211	10.3.229.211
235	10.3.229.212/31	10.3.229.212 – 10.3.229.213	10.3.229.213
236	10.3.229.214/31	10.3.229.214 – 10.3.229.215	10.3.229.215
237	10.3.229.216/31	10.3.229.216 – 10.3.229.217	10.3.229.217
238	10.3.229.218/31	10.3.229.218 – 10.3.229.219	10.3.229.219
239	10.3.229.220/31	10.3.229.220 – 10.3.229.221	10.3.229.221
240	10.3.229.222/31	10.3.229.222 – 10.3.229.223	10.3.229.223
241	10.3.229.224/31	10.3.229.224 – 10.3.229.225	10.3.229.225
242	10.3.229.226/31	10.3.229.226 – 10.3.229.227	10.3.229.227
243	10.3.229.228/31	10.3.229.228 – 10.3.229.229	10.3.229.229
244	10.3.229.230/31	10.3.229.230 – 10.3.229.231	10.3.229.231
245	10.3.229.232/31	10.3.229.232 – 10.3.229.233	10.3.229.233
246	10.3.229.234/31	10.3.229.234 – 10.3.229.235	10.3.229.235
247	10.3.229.236/31	10.3.229.236 – 10.3.229.237	10.3.229.237
248	10.3.229.238/31	10.3.229.238 – 10.3.229.239	10.3.229.239
249	10.3.229.240/31	10.3.229.240 – 10.3.229.241	10.3.229.241
250	10.3.229.242/31	10.3.229.242 – 10.3.229.243	10.3.229.243
251	10.3.229.244/31	10.3.229.244 – 10.3.229.245	10.3.229.245
252	10.3.229.246/31	10.3.229.246 – 10.3.229.247	10.3.229.247
253	10.3.229.248/31	10.3.229.248 – 10.3.229.249	10.3.229.249
254	10.3.229.250/31	10.3.229.250 – 10.3.229.251	10.3.229.251
255	10.3.229.252/31	10.3.229.252 – 10.3.229.253	10.3.229.253
256	10.3.229.254/31	10.3.229.254 – 10.3.229.255	10.3.229.255

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 →