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)10.3.248.0/22

network10.3.248.0/22

broadcast10.3.251.255

first host10.3.248.1

last host10.3.251.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.3.248.0/22

address00001010.00000011.11111000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000011.11111000.00000000

broadcast00001010.00000011.11111011.11111111

green = network part, grey = host part

hex0x0a03f800

decimal168032256

reverse dns0.248.3.10.in-addr.arpa

ipv4-mapped::ffff:a03:f800

/22 split into /32 · 1,024 subnets

close ×

#	network	host range	broadcast
1	10.3.248.0/32	10.3.248.0 – 10.3.248.0	10.3.248.0
2	10.3.248.1/32	10.3.248.1 – 10.3.248.1	10.3.248.1
3	10.3.248.2/32	10.3.248.2 – 10.3.248.2	10.3.248.2
4	10.3.248.3/32	10.3.248.3 – 10.3.248.3	10.3.248.3
5	10.3.248.4/32	10.3.248.4 – 10.3.248.4	10.3.248.4
6	10.3.248.5/32	10.3.248.5 – 10.3.248.5	10.3.248.5
7	10.3.248.6/32	10.3.248.6 – 10.3.248.6	10.3.248.6
8	10.3.248.7/32	10.3.248.7 – 10.3.248.7	10.3.248.7
9	10.3.248.8/32	10.3.248.8 – 10.3.248.8	10.3.248.8
10	10.3.248.9/32	10.3.248.9 – 10.3.248.9	10.3.248.9
11	10.3.248.10/32	10.3.248.10 – 10.3.248.10	10.3.248.10
12	10.3.248.11/32	10.3.248.11 – 10.3.248.11	10.3.248.11
13	10.3.248.12/32	10.3.248.12 – 10.3.248.12	10.3.248.12
14	10.3.248.13/32	10.3.248.13 – 10.3.248.13	10.3.248.13
15	10.3.248.14/32	10.3.248.14 – 10.3.248.14	10.3.248.14
16	10.3.248.15/32	10.3.248.15 – 10.3.248.15	10.3.248.15
17	10.3.248.16/32	10.3.248.16 – 10.3.248.16	10.3.248.16
18	10.3.248.17/32	10.3.248.17 – 10.3.248.17	10.3.248.17
19	10.3.248.18/32	10.3.248.18 – 10.3.248.18	10.3.248.18
20	10.3.248.19/32	10.3.248.19 – 10.3.248.19	10.3.248.19
21	10.3.248.20/32	10.3.248.20 – 10.3.248.20	10.3.248.20
22	10.3.248.21/32	10.3.248.21 – 10.3.248.21	10.3.248.21
23	10.3.248.22/32	10.3.248.22 – 10.3.248.22	10.3.248.22
24	10.3.248.23/32	10.3.248.23 – 10.3.248.23	10.3.248.23
25	10.3.248.24/32	10.3.248.24 – 10.3.248.24	10.3.248.24
26	10.3.248.25/32	10.3.248.25 – 10.3.248.25	10.3.248.25
27	10.3.248.26/32	10.3.248.26 – 10.3.248.26	10.3.248.26
28	10.3.248.27/32	10.3.248.27 – 10.3.248.27	10.3.248.27
29	10.3.248.28/32	10.3.248.28 – 10.3.248.28	10.3.248.28
30	10.3.248.29/32	10.3.248.29 – 10.3.248.29	10.3.248.29
31	10.3.248.30/32	10.3.248.30 – 10.3.248.30	10.3.248.30
32	10.3.248.31/32	10.3.248.31 – 10.3.248.31	10.3.248.31
33	10.3.248.32/32	10.3.248.32 – 10.3.248.32	10.3.248.32
34	10.3.248.33/32	10.3.248.33 – 10.3.248.33	10.3.248.33
35	10.3.248.34/32	10.3.248.34 – 10.3.248.34	10.3.248.34
36	10.3.248.35/32	10.3.248.35 – 10.3.248.35	10.3.248.35
37	10.3.248.36/32	10.3.248.36 – 10.3.248.36	10.3.248.36
38	10.3.248.37/32	10.3.248.37 – 10.3.248.37	10.3.248.37
39	10.3.248.38/32	10.3.248.38 – 10.3.248.38	10.3.248.38
40	10.3.248.39/32	10.3.248.39 – 10.3.248.39	10.3.248.39
41	10.3.248.40/32	10.3.248.40 – 10.3.248.40	10.3.248.40
42	10.3.248.41/32	10.3.248.41 – 10.3.248.41	10.3.248.41
43	10.3.248.42/32	10.3.248.42 – 10.3.248.42	10.3.248.42
44	10.3.248.43/32	10.3.248.43 – 10.3.248.43	10.3.248.43
45	10.3.248.44/32	10.3.248.44 – 10.3.248.44	10.3.248.44
46	10.3.248.45/32	10.3.248.45 – 10.3.248.45	10.3.248.45
47	10.3.248.46/32	10.3.248.46 – 10.3.248.46	10.3.248.46
48	10.3.248.47/32	10.3.248.47 – 10.3.248.47	10.3.248.47
49	10.3.248.48/32	10.3.248.48 – 10.3.248.48	10.3.248.48
50	10.3.248.49/32	10.3.248.49 – 10.3.248.49	10.3.248.49
51	10.3.248.50/32	10.3.248.50 – 10.3.248.50	10.3.248.50
52	10.3.248.51/32	10.3.248.51 – 10.3.248.51	10.3.248.51
53	10.3.248.52/32	10.3.248.52 – 10.3.248.52	10.3.248.52
54	10.3.248.53/32	10.3.248.53 – 10.3.248.53	10.3.248.53
55	10.3.248.54/32	10.3.248.54 – 10.3.248.54	10.3.248.54
56	10.3.248.55/32	10.3.248.55 – 10.3.248.55	10.3.248.55
57	10.3.248.56/32	10.3.248.56 – 10.3.248.56	10.3.248.56
58	10.3.248.57/32	10.3.248.57 – 10.3.248.57	10.3.248.57
59	10.3.248.58/32	10.3.248.58 – 10.3.248.58	10.3.248.58
60	10.3.248.59/32	10.3.248.59 – 10.3.248.59	10.3.248.59
61	10.3.248.60/32	10.3.248.60 – 10.3.248.60	10.3.248.60
62	10.3.248.61/32	10.3.248.61 – 10.3.248.61	10.3.248.61
63	10.3.248.62/32	10.3.248.62 – 10.3.248.62	10.3.248.62
64	10.3.248.63/32	10.3.248.63 – 10.3.248.63	10.3.248.63
65	10.3.248.64/32	10.3.248.64 – 10.3.248.64	10.3.248.64
66	10.3.248.65/32	10.3.248.65 – 10.3.248.65	10.3.248.65
67	10.3.248.66/32	10.3.248.66 – 10.3.248.66	10.3.248.66
68	10.3.248.67/32	10.3.248.67 – 10.3.248.67	10.3.248.67
69	10.3.248.68/32	10.3.248.68 – 10.3.248.68	10.3.248.68
70	10.3.248.69/32	10.3.248.69 – 10.3.248.69	10.3.248.69
71	10.3.248.70/32	10.3.248.70 – 10.3.248.70	10.3.248.70
72	10.3.248.71/32	10.3.248.71 – 10.3.248.71	10.3.248.71
73	10.3.248.72/32	10.3.248.72 – 10.3.248.72	10.3.248.72
74	10.3.248.73/32	10.3.248.73 – 10.3.248.73	10.3.248.73
75	10.3.248.74/32	10.3.248.74 – 10.3.248.74	10.3.248.74
76	10.3.248.75/32	10.3.248.75 – 10.3.248.75	10.3.248.75
77	10.3.248.76/32	10.3.248.76 – 10.3.248.76	10.3.248.76
78	10.3.248.77/32	10.3.248.77 – 10.3.248.77	10.3.248.77
79	10.3.248.78/32	10.3.248.78 – 10.3.248.78	10.3.248.78
80	10.3.248.79/32	10.3.248.79 – 10.3.248.79	10.3.248.79
81	10.3.248.80/32	10.3.248.80 – 10.3.248.80	10.3.248.80
82	10.3.248.81/32	10.3.248.81 – 10.3.248.81	10.3.248.81
83	10.3.248.82/32	10.3.248.82 – 10.3.248.82	10.3.248.82
84	10.3.248.83/32	10.3.248.83 – 10.3.248.83	10.3.248.83
85	10.3.248.84/32	10.3.248.84 – 10.3.248.84	10.3.248.84
86	10.3.248.85/32	10.3.248.85 – 10.3.248.85	10.3.248.85
87	10.3.248.86/32	10.3.248.86 – 10.3.248.86	10.3.248.86
88	10.3.248.87/32	10.3.248.87 – 10.3.248.87	10.3.248.87
89	10.3.248.88/32	10.3.248.88 – 10.3.248.88	10.3.248.88
90	10.3.248.89/32	10.3.248.89 – 10.3.248.89	10.3.248.89
91	10.3.248.90/32	10.3.248.90 – 10.3.248.90	10.3.248.90
92	10.3.248.91/32	10.3.248.91 – 10.3.248.91	10.3.248.91
93	10.3.248.92/32	10.3.248.92 – 10.3.248.92	10.3.248.92
94	10.3.248.93/32	10.3.248.93 – 10.3.248.93	10.3.248.93
95	10.3.248.94/32	10.3.248.94 – 10.3.248.94	10.3.248.94
96	10.3.248.95/32	10.3.248.95 – 10.3.248.95	10.3.248.95
97	10.3.248.96/32	10.3.248.96 – 10.3.248.96	10.3.248.96
98	10.3.248.97/32	10.3.248.97 – 10.3.248.97	10.3.248.97
99	10.3.248.98/32	10.3.248.98 – 10.3.248.98	10.3.248.98
100	10.3.248.99/32	10.3.248.99 – 10.3.248.99	10.3.248.99
101	10.3.248.100/32	10.3.248.100 – 10.3.248.100	10.3.248.100
102	10.3.248.101/32	10.3.248.101 – 10.3.248.101	10.3.248.101
103	10.3.248.102/32	10.3.248.102 – 10.3.248.102	10.3.248.102
104	10.3.248.103/32	10.3.248.103 – 10.3.248.103	10.3.248.103
105	10.3.248.104/32	10.3.248.104 – 10.3.248.104	10.3.248.104
106	10.3.248.105/32	10.3.248.105 – 10.3.248.105	10.3.248.105
107	10.3.248.106/32	10.3.248.106 – 10.3.248.106	10.3.248.106
108	10.3.248.107/32	10.3.248.107 – 10.3.248.107	10.3.248.107
109	10.3.248.108/32	10.3.248.108 – 10.3.248.108	10.3.248.108
110	10.3.248.109/32	10.3.248.109 – 10.3.248.109	10.3.248.109
111	10.3.248.110/32	10.3.248.110 – 10.3.248.110	10.3.248.110
112	10.3.248.111/32	10.3.248.111 – 10.3.248.111	10.3.248.111
113	10.3.248.112/32	10.3.248.112 – 10.3.248.112	10.3.248.112
114	10.3.248.113/32	10.3.248.113 – 10.3.248.113	10.3.248.113
115	10.3.248.114/32	10.3.248.114 – 10.3.248.114	10.3.248.114
116	10.3.248.115/32	10.3.248.115 – 10.3.248.115	10.3.248.115
117	10.3.248.116/32	10.3.248.116 – 10.3.248.116	10.3.248.116
118	10.3.248.117/32	10.3.248.117 – 10.3.248.117	10.3.248.117
119	10.3.248.118/32	10.3.248.118 – 10.3.248.118	10.3.248.118
120	10.3.248.119/32	10.3.248.119 – 10.3.248.119	10.3.248.119
121	10.3.248.120/32	10.3.248.120 – 10.3.248.120	10.3.248.120
122	10.3.248.121/32	10.3.248.121 – 10.3.248.121	10.3.248.121
123	10.3.248.122/32	10.3.248.122 – 10.3.248.122	10.3.248.122
124	10.3.248.123/32	10.3.248.123 – 10.3.248.123	10.3.248.123
125	10.3.248.124/32	10.3.248.124 – 10.3.248.124	10.3.248.124
126	10.3.248.125/32	10.3.248.125 – 10.3.248.125	10.3.248.125
127	10.3.248.126/32	10.3.248.126 – 10.3.248.126	10.3.248.126
128	10.3.248.127/32	10.3.248.127 – 10.3.248.127	10.3.248.127
129	10.3.248.128/32	10.3.248.128 – 10.3.248.128	10.3.248.128
130	10.3.248.129/32	10.3.248.129 – 10.3.248.129	10.3.248.129
131	10.3.248.130/32	10.3.248.130 – 10.3.248.130	10.3.248.130
132	10.3.248.131/32	10.3.248.131 – 10.3.248.131	10.3.248.131
133	10.3.248.132/32	10.3.248.132 – 10.3.248.132	10.3.248.132
134	10.3.248.133/32	10.3.248.133 – 10.3.248.133	10.3.248.133
135	10.3.248.134/32	10.3.248.134 – 10.3.248.134	10.3.248.134
136	10.3.248.135/32	10.3.248.135 – 10.3.248.135	10.3.248.135
137	10.3.248.136/32	10.3.248.136 – 10.3.248.136	10.3.248.136
138	10.3.248.137/32	10.3.248.137 – 10.3.248.137	10.3.248.137
139	10.3.248.138/32	10.3.248.138 – 10.3.248.138	10.3.248.138
140	10.3.248.139/32	10.3.248.139 – 10.3.248.139	10.3.248.139
141	10.3.248.140/32	10.3.248.140 – 10.3.248.140	10.3.248.140
142	10.3.248.141/32	10.3.248.141 – 10.3.248.141	10.3.248.141
143	10.3.248.142/32	10.3.248.142 – 10.3.248.142	10.3.248.142
144	10.3.248.143/32	10.3.248.143 – 10.3.248.143	10.3.248.143
145	10.3.248.144/32	10.3.248.144 – 10.3.248.144	10.3.248.144
146	10.3.248.145/32	10.3.248.145 – 10.3.248.145	10.3.248.145
147	10.3.248.146/32	10.3.248.146 – 10.3.248.146	10.3.248.146
148	10.3.248.147/32	10.3.248.147 – 10.3.248.147	10.3.248.147
149	10.3.248.148/32	10.3.248.148 – 10.3.248.148	10.3.248.148
150	10.3.248.149/32	10.3.248.149 – 10.3.248.149	10.3.248.149
151	10.3.248.150/32	10.3.248.150 – 10.3.248.150	10.3.248.150
152	10.3.248.151/32	10.3.248.151 – 10.3.248.151	10.3.248.151
153	10.3.248.152/32	10.3.248.152 – 10.3.248.152	10.3.248.152
154	10.3.248.153/32	10.3.248.153 – 10.3.248.153	10.3.248.153
155	10.3.248.154/32	10.3.248.154 – 10.3.248.154	10.3.248.154
156	10.3.248.155/32	10.3.248.155 – 10.3.248.155	10.3.248.155
157	10.3.248.156/32	10.3.248.156 – 10.3.248.156	10.3.248.156
158	10.3.248.157/32	10.3.248.157 – 10.3.248.157	10.3.248.157
159	10.3.248.158/32	10.3.248.158 – 10.3.248.158	10.3.248.158
160	10.3.248.159/32	10.3.248.159 – 10.3.248.159	10.3.248.159
161	10.3.248.160/32	10.3.248.160 – 10.3.248.160	10.3.248.160
162	10.3.248.161/32	10.3.248.161 – 10.3.248.161	10.3.248.161
163	10.3.248.162/32	10.3.248.162 – 10.3.248.162	10.3.248.162
164	10.3.248.163/32	10.3.248.163 – 10.3.248.163	10.3.248.163
165	10.3.248.164/32	10.3.248.164 – 10.3.248.164	10.3.248.164
166	10.3.248.165/32	10.3.248.165 – 10.3.248.165	10.3.248.165
167	10.3.248.166/32	10.3.248.166 – 10.3.248.166	10.3.248.166
168	10.3.248.167/32	10.3.248.167 – 10.3.248.167	10.3.248.167
169	10.3.248.168/32	10.3.248.168 – 10.3.248.168	10.3.248.168
170	10.3.248.169/32	10.3.248.169 – 10.3.248.169	10.3.248.169
171	10.3.248.170/32	10.3.248.170 – 10.3.248.170	10.3.248.170
172	10.3.248.171/32	10.3.248.171 – 10.3.248.171	10.3.248.171
173	10.3.248.172/32	10.3.248.172 – 10.3.248.172	10.3.248.172
174	10.3.248.173/32	10.3.248.173 – 10.3.248.173	10.3.248.173
175	10.3.248.174/32	10.3.248.174 – 10.3.248.174	10.3.248.174
176	10.3.248.175/32	10.3.248.175 – 10.3.248.175	10.3.248.175
177	10.3.248.176/32	10.3.248.176 – 10.3.248.176	10.3.248.176
178	10.3.248.177/32	10.3.248.177 – 10.3.248.177	10.3.248.177
179	10.3.248.178/32	10.3.248.178 – 10.3.248.178	10.3.248.178
180	10.3.248.179/32	10.3.248.179 – 10.3.248.179	10.3.248.179
181	10.3.248.180/32	10.3.248.180 – 10.3.248.180	10.3.248.180
182	10.3.248.181/32	10.3.248.181 – 10.3.248.181	10.3.248.181
183	10.3.248.182/32	10.3.248.182 – 10.3.248.182	10.3.248.182
184	10.3.248.183/32	10.3.248.183 – 10.3.248.183	10.3.248.183
185	10.3.248.184/32	10.3.248.184 – 10.3.248.184	10.3.248.184
186	10.3.248.185/32	10.3.248.185 – 10.3.248.185	10.3.248.185
187	10.3.248.186/32	10.3.248.186 – 10.3.248.186	10.3.248.186
188	10.3.248.187/32	10.3.248.187 – 10.3.248.187	10.3.248.187
189	10.3.248.188/32	10.3.248.188 – 10.3.248.188	10.3.248.188
190	10.3.248.189/32	10.3.248.189 – 10.3.248.189	10.3.248.189
191	10.3.248.190/32	10.3.248.190 – 10.3.248.190	10.3.248.190
192	10.3.248.191/32	10.3.248.191 – 10.3.248.191	10.3.248.191
193	10.3.248.192/32	10.3.248.192 – 10.3.248.192	10.3.248.192
194	10.3.248.193/32	10.3.248.193 – 10.3.248.193	10.3.248.193
195	10.3.248.194/32	10.3.248.194 – 10.3.248.194	10.3.248.194
196	10.3.248.195/32	10.3.248.195 – 10.3.248.195	10.3.248.195
197	10.3.248.196/32	10.3.248.196 – 10.3.248.196	10.3.248.196
198	10.3.248.197/32	10.3.248.197 – 10.3.248.197	10.3.248.197
199	10.3.248.198/32	10.3.248.198 – 10.3.248.198	10.3.248.198
200	10.3.248.199/32	10.3.248.199 – 10.3.248.199	10.3.248.199
201	10.3.248.200/32	10.3.248.200 – 10.3.248.200	10.3.248.200
202	10.3.248.201/32	10.3.248.201 – 10.3.248.201	10.3.248.201
203	10.3.248.202/32	10.3.248.202 – 10.3.248.202	10.3.248.202
204	10.3.248.203/32	10.3.248.203 – 10.3.248.203	10.3.248.203
205	10.3.248.204/32	10.3.248.204 – 10.3.248.204	10.3.248.204
206	10.3.248.205/32	10.3.248.205 – 10.3.248.205	10.3.248.205
207	10.3.248.206/32	10.3.248.206 – 10.3.248.206	10.3.248.206
208	10.3.248.207/32	10.3.248.207 – 10.3.248.207	10.3.248.207
209	10.3.248.208/32	10.3.248.208 – 10.3.248.208	10.3.248.208
210	10.3.248.209/32	10.3.248.209 – 10.3.248.209	10.3.248.209
211	10.3.248.210/32	10.3.248.210 – 10.3.248.210	10.3.248.210
212	10.3.248.211/32	10.3.248.211 – 10.3.248.211	10.3.248.211
213	10.3.248.212/32	10.3.248.212 – 10.3.248.212	10.3.248.212
214	10.3.248.213/32	10.3.248.213 – 10.3.248.213	10.3.248.213
215	10.3.248.214/32	10.3.248.214 – 10.3.248.214	10.3.248.214
216	10.3.248.215/32	10.3.248.215 – 10.3.248.215	10.3.248.215
217	10.3.248.216/32	10.3.248.216 – 10.3.248.216	10.3.248.216
218	10.3.248.217/32	10.3.248.217 – 10.3.248.217	10.3.248.217
219	10.3.248.218/32	10.3.248.218 – 10.3.248.218	10.3.248.218
220	10.3.248.219/32	10.3.248.219 – 10.3.248.219	10.3.248.219
221	10.3.248.220/32	10.3.248.220 – 10.3.248.220	10.3.248.220
222	10.3.248.221/32	10.3.248.221 – 10.3.248.221	10.3.248.221
223	10.3.248.222/32	10.3.248.222 – 10.3.248.222	10.3.248.222
224	10.3.248.223/32	10.3.248.223 – 10.3.248.223	10.3.248.223
225	10.3.248.224/32	10.3.248.224 – 10.3.248.224	10.3.248.224
226	10.3.248.225/32	10.3.248.225 – 10.3.248.225	10.3.248.225
227	10.3.248.226/32	10.3.248.226 – 10.3.248.226	10.3.248.226
228	10.3.248.227/32	10.3.248.227 – 10.3.248.227	10.3.248.227
229	10.3.248.228/32	10.3.248.228 – 10.3.248.228	10.3.248.228
230	10.3.248.229/32	10.3.248.229 – 10.3.248.229	10.3.248.229
231	10.3.248.230/32	10.3.248.230 – 10.3.248.230	10.3.248.230
232	10.3.248.231/32	10.3.248.231 – 10.3.248.231	10.3.248.231
233	10.3.248.232/32	10.3.248.232 – 10.3.248.232	10.3.248.232
234	10.3.248.233/32	10.3.248.233 – 10.3.248.233	10.3.248.233
235	10.3.248.234/32	10.3.248.234 – 10.3.248.234	10.3.248.234
236	10.3.248.235/32	10.3.248.235 – 10.3.248.235	10.3.248.235
237	10.3.248.236/32	10.3.248.236 – 10.3.248.236	10.3.248.236
238	10.3.248.237/32	10.3.248.237 – 10.3.248.237	10.3.248.237
239	10.3.248.238/32	10.3.248.238 – 10.3.248.238	10.3.248.238
240	10.3.248.239/32	10.3.248.239 – 10.3.248.239	10.3.248.239
241	10.3.248.240/32	10.3.248.240 – 10.3.248.240	10.3.248.240
242	10.3.248.241/32	10.3.248.241 – 10.3.248.241	10.3.248.241
243	10.3.248.242/32	10.3.248.242 – 10.3.248.242	10.3.248.242
244	10.3.248.243/32	10.3.248.243 – 10.3.248.243	10.3.248.243
245	10.3.248.244/32	10.3.248.244 – 10.3.248.244	10.3.248.244
246	10.3.248.245/32	10.3.248.245 – 10.3.248.245	10.3.248.245
247	10.3.248.246/32	10.3.248.246 – 10.3.248.246	10.3.248.246
248	10.3.248.247/32	10.3.248.247 – 10.3.248.247	10.3.248.247
249	10.3.248.248/32	10.3.248.248 – 10.3.248.248	10.3.248.248
250	10.3.248.249/32	10.3.248.249 – 10.3.248.249	10.3.248.249
251	10.3.248.250/32	10.3.248.250 – 10.3.248.250	10.3.248.250
252	10.3.248.251/32	10.3.248.251 – 10.3.248.251	10.3.248.251
253	10.3.248.252/32	10.3.248.252 – 10.3.248.252	10.3.248.252
254	10.3.248.253/32	10.3.248.253 – 10.3.248.253	10.3.248.253
255	10.3.248.254/32	10.3.248.254 – 10.3.248.254	10.3.248.254
256	10.3.248.255/32	10.3.248.255 – 10.3.248.255	10.3.248.255

showing 256 of 1,024

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 →