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)10.0.229.0/24

network10.0.229.0/24

broadcast10.0.229.255

first host10.0.229.1

last host10.0.229.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.0.229.0/24

address00001010.00000000.11100101.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.00000000.11100101.00000000

broadcast00001010.00000000.11100101.11111111

green = network part, grey = host part

hex0x0a00e500

decimal167830784

reverse dns0.229.0.10.in-addr.arpa

ipv4-mapped::ffff:a00:e500

/24 split into /32 · 256 subnets

close ×

#	network	host range	broadcast
1	10.0.229.0/32	10.0.229.0 – 10.0.229.0	10.0.229.0
2	10.0.229.1/32	10.0.229.1 – 10.0.229.1	10.0.229.1
3	10.0.229.2/32	10.0.229.2 – 10.0.229.2	10.0.229.2
4	10.0.229.3/32	10.0.229.3 – 10.0.229.3	10.0.229.3
5	10.0.229.4/32	10.0.229.4 – 10.0.229.4	10.0.229.4
6	10.0.229.5/32	10.0.229.5 – 10.0.229.5	10.0.229.5
7	10.0.229.6/32	10.0.229.6 – 10.0.229.6	10.0.229.6
8	10.0.229.7/32	10.0.229.7 – 10.0.229.7	10.0.229.7
9	10.0.229.8/32	10.0.229.8 – 10.0.229.8	10.0.229.8
10	10.0.229.9/32	10.0.229.9 – 10.0.229.9	10.0.229.9
11	10.0.229.10/32	10.0.229.10 – 10.0.229.10	10.0.229.10
12	10.0.229.11/32	10.0.229.11 – 10.0.229.11	10.0.229.11
13	10.0.229.12/32	10.0.229.12 – 10.0.229.12	10.0.229.12
14	10.0.229.13/32	10.0.229.13 – 10.0.229.13	10.0.229.13
15	10.0.229.14/32	10.0.229.14 – 10.0.229.14	10.0.229.14
16	10.0.229.15/32	10.0.229.15 – 10.0.229.15	10.0.229.15
17	10.0.229.16/32	10.0.229.16 – 10.0.229.16	10.0.229.16
18	10.0.229.17/32	10.0.229.17 – 10.0.229.17	10.0.229.17
19	10.0.229.18/32	10.0.229.18 – 10.0.229.18	10.0.229.18
20	10.0.229.19/32	10.0.229.19 – 10.0.229.19	10.0.229.19
21	10.0.229.20/32	10.0.229.20 – 10.0.229.20	10.0.229.20
22	10.0.229.21/32	10.0.229.21 – 10.0.229.21	10.0.229.21
23	10.0.229.22/32	10.0.229.22 – 10.0.229.22	10.0.229.22
24	10.0.229.23/32	10.0.229.23 – 10.0.229.23	10.0.229.23
25	10.0.229.24/32	10.0.229.24 – 10.0.229.24	10.0.229.24
26	10.0.229.25/32	10.0.229.25 – 10.0.229.25	10.0.229.25
27	10.0.229.26/32	10.0.229.26 – 10.0.229.26	10.0.229.26
28	10.0.229.27/32	10.0.229.27 – 10.0.229.27	10.0.229.27
29	10.0.229.28/32	10.0.229.28 – 10.0.229.28	10.0.229.28
30	10.0.229.29/32	10.0.229.29 – 10.0.229.29	10.0.229.29
31	10.0.229.30/32	10.0.229.30 – 10.0.229.30	10.0.229.30
32	10.0.229.31/32	10.0.229.31 – 10.0.229.31	10.0.229.31
33	10.0.229.32/32	10.0.229.32 – 10.0.229.32	10.0.229.32
34	10.0.229.33/32	10.0.229.33 – 10.0.229.33	10.0.229.33
35	10.0.229.34/32	10.0.229.34 – 10.0.229.34	10.0.229.34
36	10.0.229.35/32	10.0.229.35 – 10.0.229.35	10.0.229.35
37	10.0.229.36/32	10.0.229.36 – 10.0.229.36	10.0.229.36
38	10.0.229.37/32	10.0.229.37 – 10.0.229.37	10.0.229.37
39	10.0.229.38/32	10.0.229.38 – 10.0.229.38	10.0.229.38
40	10.0.229.39/32	10.0.229.39 – 10.0.229.39	10.0.229.39
41	10.0.229.40/32	10.0.229.40 – 10.0.229.40	10.0.229.40
42	10.0.229.41/32	10.0.229.41 – 10.0.229.41	10.0.229.41
43	10.0.229.42/32	10.0.229.42 – 10.0.229.42	10.0.229.42
44	10.0.229.43/32	10.0.229.43 – 10.0.229.43	10.0.229.43
45	10.0.229.44/32	10.0.229.44 – 10.0.229.44	10.0.229.44
46	10.0.229.45/32	10.0.229.45 – 10.0.229.45	10.0.229.45
47	10.0.229.46/32	10.0.229.46 – 10.0.229.46	10.0.229.46
48	10.0.229.47/32	10.0.229.47 – 10.0.229.47	10.0.229.47
49	10.0.229.48/32	10.0.229.48 – 10.0.229.48	10.0.229.48
50	10.0.229.49/32	10.0.229.49 – 10.0.229.49	10.0.229.49
51	10.0.229.50/32	10.0.229.50 – 10.0.229.50	10.0.229.50
52	10.0.229.51/32	10.0.229.51 – 10.0.229.51	10.0.229.51
53	10.0.229.52/32	10.0.229.52 – 10.0.229.52	10.0.229.52
54	10.0.229.53/32	10.0.229.53 – 10.0.229.53	10.0.229.53
55	10.0.229.54/32	10.0.229.54 – 10.0.229.54	10.0.229.54
56	10.0.229.55/32	10.0.229.55 – 10.0.229.55	10.0.229.55
57	10.0.229.56/32	10.0.229.56 – 10.0.229.56	10.0.229.56
58	10.0.229.57/32	10.0.229.57 – 10.0.229.57	10.0.229.57
59	10.0.229.58/32	10.0.229.58 – 10.0.229.58	10.0.229.58
60	10.0.229.59/32	10.0.229.59 – 10.0.229.59	10.0.229.59
61	10.0.229.60/32	10.0.229.60 – 10.0.229.60	10.0.229.60
62	10.0.229.61/32	10.0.229.61 – 10.0.229.61	10.0.229.61
63	10.0.229.62/32	10.0.229.62 – 10.0.229.62	10.0.229.62
64	10.0.229.63/32	10.0.229.63 – 10.0.229.63	10.0.229.63
65	10.0.229.64/32	10.0.229.64 – 10.0.229.64	10.0.229.64
66	10.0.229.65/32	10.0.229.65 – 10.0.229.65	10.0.229.65
67	10.0.229.66/32	10.0.229.66 – 10.0.229.66	10.0.229.66
68	10.0.229.67/32	10.0.229.67 – 10.0.229.67	10.0.229.67
69	10.0.229.68/32	10.0.229.68 – 10.0.229.68	10.0.229.68
70	10.0.229.69/32	10.0.229.69 – 10.0.229.69	10.0.229.69
71	10.0.229.70/32	10.0.229.70 – 10.0.229.70	10.0.229.70
72	10.0.229.71/32	10.0.229.71 – 10.0.229.71	10.0.229.71
73	10.0.229.72/32	10.0.229.72 – 10.0.229.72	10.0.229.72
74	10.0.229.73/32	10.0.229.73 – 10.0.229.73	10.0.229.73
75	10.0.229.74/32	10.0.229.74 – 10.0.229.74	10.0.229.74
76	10.0.229.75/32	10.0.229.75 – 10.0.229.75	10.0.229.75
77	10.0.229.76/32	10.0.229.76 – 10.0.229.76	10.0.229.76
78	10.0.229.77/32	10.0.229.77 – 10.0.229.77	10.0.229.77
79	10.0.229.78/32	10.0.229.78 – 10.0.229.78	10.0.229.78
80	10.0.229.79/32	10.0.229.79 – 10.0.229.79	10.0.229.79
81	10.0.229.80/32	10.0.229.80 – 10.0.229.80	10.0.229.80
82	10.0.229.81/32	10.0.229.81 – 10.0.229.81	10.0.229.81
83	10.0.229.82/32	10.0.229.82 – 10.0.229.82	10.0.229.82
84	10.0.229.83/32	10.0.229.83 – 10.0.229.83	10.0.229.83
85	10.0.229.84/32	10.0.229.84 – 10.0.229.84	10.0.229.84
86	10.0.229.85/32	10.0.229.85 – 10.0.229.85	10.0.229.85
87	10.0.229.86/32	10.0.229.86 – 10.0.229.86	10.0.229.86
88	10.0.229.87/32	10.0.229.87 – 10.0.229.87	10.0.229.87
89	10.0.229.88/32	10.0.229.88 – 10.0.229.88	10.0.229.88
90	10.0.229.89/32	10.0.229.89 – 10.0.229.89	10.0.229.89
91	10.0.229.90/32	10.0.229.90 – 10.0.229.90	10.0.229.90
92	10.0.229.91/32	10.0.229.91 – 10.0.229.91	10.0.229.91
93	10.0.229.92/32	10.0.229.92 – 10.0.229.92	10.0.229.92
94	10.0.229.93/32	10.0.229.93 – 10.0.229.93	10.0.229.93
95	10.0.229.94/32	10.0.229.94 – 10.0.229.94	10.0.229.94
96	10.0.229.95/32	10.0.229.95 – 10.0.229.95	10.0.229.95
97	10.0.229.96/32	10.0.229.96 – 10.0.229.96	10.0.229.96
98	10.0.229.97/32	10.0.229.97 – 10.0.229.97	10.0.229.97
99	10.0.229.98/32	10.0.229.98 – 10.0.229.98	10.0.229.98
100	10.0.229.99/32	10.0.229.99 – 10.0.229.99	10.0.229.99
101	10.0.229.100/32	10.0.229.100 – 10.0.229.100	10.0.229.100
102	10.0.229.101/32	10.0.229.101 – 10.0.229.101	10.0.229.101
103	10.0.229.102/32	10.0.229.102 – 10.0.229.102	10.0.229.102
104	10.0.229.103/32	10.0.229.103 – 10.0.229.103	10.0.229.103
105	10.0.229.104/32	10.0.229.104 – 10.0.229.104	10.0.229.104
106	10.0.229.105/32	10.0.229.105 – 10.0.229.105	10.0.229.105
107	10.0.229.106/32	10.0.229.106 – 10.0.229.106	10.0.229.106
108	10.0.229.107/32	10.0.229.107 – 10.0.229.107	10.0.229.107
109	10.0.229.108/32	10.0.229.108 – 10.0.229.108	10.0.229.108
110	10.0.229.109/32	10.0.229.109 – 10.0.229.109	10.0.229.109
111	10.0.229.110/32	10.0.229.110 – 10.0.229.110	10.0.229.110
112	10.0.229.111/32	10.0.229.111 – 10.0.229.111	10.0.229.111
113	10.0.229.112/32	10.0.229.112 – 10.0.229.112	10.0.229.112
114	10.0.229.113/32	10.0.229.113 – 10.0.229.113	10.0.229.113
115	10.0.229.114/32	10.0.229.114 – 10.0.229.114	10.0.229.114
116	10.0.229.115/32	10.0.229.115 – 10.0.229.115	10.0.229.115
117	10.0.229.116/32	10.0.229.116 – 10.0.229.116	10.0.229.116
118	10.0.229.117/32	10.0.229.117 – 10.0.229.117	10.0.229.117
119	10.0.229.118/32	10.0.229.118 – 10.0.229.118	10.0.229.118
120	10.0.229.119/32	10.0.229.119 – 10.0.229.119	10.0.229.119
121	10.0.229.120/32	10.0.229.120 – 10.0.229.120	10.0.229.120
122	10.0.229.121/32	10.0.229.121 – 10.0.229.121	10.0.229.121
123	10.0.229.122/32	10.0.229.122 – 10.0.229.122	10.0.229.122
124	10.0.229.123/32	10.0.229.123 – 10.0.229.123	10.0.229.123
125	10.0.229.124/32	10.0.229.124 – 10.0.229.124	10.0.229.124
126	10.0.229.125/32	10.0.229.125 – 10.0.229.125	10.0.229.125
127	10.0.229.126/32	10.0.229.126 – 10.0.229.126	10.0.229.126
128	10.0.229.127/32	10.0.229.127 – 10.0.229.127	10.0.229.127
129	10.0.229.128/32	10.0.229.128 – 10.0.229.128	10.0.229.128
130	10.0.229.129/32	10.0.229.129 – 10.0.229.129	10.0.229.129
131	10.0.229.130/32	10.0.229.130 – 10.0.229.130	10.0.229.130
132	10.0.229.131/32	10.0.229.131 – 10.0.229.131	10.0.229.131
133	10.0.229.132/32	10.0.229.132 – 10.0.229.132	10.0.229.132
134	10.0.229.133/32	10.0.229.133 – 10.0.229.133	10.0.229.133
135	10.0.229.134/32	10.0.229.134 – 10.0.229.134	10.0.229.134
136	10.0.229.135/32	10.0.229.135 – 10.0.229.135	10.0.229.135
137	10.0.229.136/32	10.0.229.136 – 10.0.229.136	10.0.229.136
138	10.0.229.137/32	10.0.229.137 – 10.0.229.137	10.0.229.137
139	10.0.229.138/32	10.0.229.138 – 10.0.229.138	10.0.229.138
140	10.0.229.139/32	10.0.229.139 – 10.0.229.139	10.0.229.139
141	10.0.229.140/32	10.0.229.140 – 10.0.229.140	10.0.229.140
142	10.0.229.141/32	10.0.229.141 – 10.0.229.141	10.0.229.141
143	10.0.229.142/32	10.0.229.142 – 10.0.229.142	10.0.229.142
144	10.0.229.143/32	10.0.229.143 – 10.0.229.143	10.0.229.143
145	10.0.229.144/32	10.0.229.144 – 10.0.229.144	10.0.229.144
146	10.0.229.145/32	10.0.229.145 – 10.0.229.145	10.0.229.145
147	10.0.229.146/32	10.0.229.146 – 10.0.229.146	10.0.229.146
148	10.0.229.147/32	10.0.229.147 – 10.0.229.147	10.0.229.147
149	10.0.229.148/32	10.0.229.148 – 10.0.229.148	10.0.229.148
150	10.0.229.149/32	10.0.229.149 – 10.0.229.149	10.0.229.149
151	10.0.229.150/32	10.0.229.150 – 10.0.229.150	10.0.229.150
152	10.0.229.151/32	10.0.229.151 – 10.0.229.151	10.0.229.151
153	10.0.229.152/32	10.0.229.152 – 10.0.229.152	10.0.229.152
154	10.0.229.153/32	10.0.229.153 – 10.0.229.153	10.0.229.153
155	10.0.229.154/32	10.0.229.154 – 10.0.229.154	10.0.229.154
156	10.0.229.155/32	10.0.229.155 – 10.0.229.155	10.0.229.155
157	10.0.229.156/32	10.0.229.156 – 10.0.229.156	10.0.229.156
158	10.0.229.157/32	10.0.229.157 – 10.0.229.157	10.0.229.157
159	10.0.229.158/32	10.0.229.158 – 10.0.229.158	10.0.229.158
160	10.0.229.159/32	10.0.229.159 – 10.0.229.159	10.0.229.159
161	10.0.229.160/32	10.0.229.160 – 10.0.229.160	10.0.229.160
162	10.0.229.161/32	10.0.229.161 – 10.0.229.161	10.0.229.161
163	10.0.229.162/32	10.0.229.162 – 10.0.229.162	10.0.229.162
164	10.0.229.163/32	10.0.229.163 – 10.0.229.163	10.0.229.163
165	10.0.229.164/32	10.0.229.164 – 10.0.229.164	10.0.229.164
166	10.0.229.165/32	10.0.229.165 – 10.0.229.165	10.0.229.165
167	10.0.229.166/32	10.0.229.166 – 10.0.229.166	10.0.229.166
168	10.0.229.167/32	10.0.229.167 – 10.0.229.167	10.0.229.167
169	10.0.229.168/32	10.0.229.168 – 10.0.229.168	10.0.229.168
170	10.0.229.169/32	10.0.229.169 – 10.0.229.169	10.0.229.169
171	10.0.229.170/32	10.0.229.170 – 10.0.229.170	10.0.229.170
172	10.0.229.171/32	10.0.229.171 – 10.0.229.171	10.0.229.171
173	10.0.229.172/32	10.0.229.172 – 10.0.229.172	10.0.229.172
174	10.0.229.173/32	10.0.229.173 – 10.0.229.173	10.0.229.173
175	10.0.229.174/32	10.0.229.174 – 10.0.229.174	10.0.229.174
176	10.0.229.175/32	10.0.229.175 – 10.0.229.175	10.0.229.175
177	10.0.229.176/32	10.0.229.176 – 10.0.229.176	10.0.229.176
178	10.0.229.177/32	10.0.229.177 – 10.0.229.177	10.0.229.177
179	10.0.229.178/32	10.0.229.178 – 10.0.229.178	10.0.229.178
180	10.0.229.179/32	10.0.229.179 – 10.0.229.179	10.0.229.179
181	10.0.229.180/32	10.0.229.180 – 10.0.229.180	10.0.229.180
182	10.0.229.181/32	10.0.229.181 – 10.0.229.181	10.0.229.181
183	10.0.229.182/32	10.0.229.182 – 10.0.229.182	10.0.229.182
184	10.0.229.183/32	10.0.229.183 – 10.0.229.183	10.0.229.183
185	10.0.229.184/32	10.0.229.184 – 10.0.229.184	10.0.229.184
186	10.0.229.185/32	10.0.229.185 – 10.0.229.185	10.0.229.185
187	10.0.229.186/32	10.0.229.186 – 10.0.229.186	10.0.229.186
188	10.0.229.187/32	10.0.229.187 – 10.0.229.187	10.0.229.187
189	10.0.229.188/32	10.0.229.188 – 10.0.229.188	10.0.229.188
190	10.0.229.189/32	10.0.229.189 – 10.0.229.189	10.0.229.189
191	10.0.229.190/32	10.0.229.190 – 10.0.229.190	10.0.229.190
192	10.0.229.191/32	10.0.229.191 – 10.0.229.191	10.0.229.191
193	10.0.229.192/32	10.0.229.192 – 10.0.229.192	10.0.229.192
194	10.0.229.193/32	10.0.229.193 – 10.0.229.193	10.0.229.193
195	10.0.229.194/32	10.0.229.194 – 10.0.229.194	10.0.229.194
196	10.0.229.195/32	10.0.229.195 – 10.0.229.195	10.0.229.195
197	10.0.229.196/32	10.0.229.196 – 10.0.229.196	10.0.229.196
198	10.0.229.197/32	10.0.229.197 – 10.0.229.197	10.0.229.197
199	10.0.229.198/32	10.0.229.198 – 10.0.229.198	10.0.229.198
200	10.0.229.199/32	10.0.229.199 – 10.0.229.199	10.0.229.199
201	10.0.229.200/32	10.0.229.200 – 10.0.229.200	10.0.229.200
202	10.0.229.201/32	10.0.229.201 – 10.0.229.201	10.0.229.201
203	10.0.229.202/32	10.0.229.202 – 10.0.229.202	10.0.229.202
204	10.0.229.203/32	10.0.229.203 – 10.0.229.203	10.0.229.203
205	10.0.229.204/32	10.0.229.204 – 10.0.229.204	10.0.229.204
206	10.0.229.205/32	10.0.229.205 – 10.0.229.205	10.0.229.205
207	10.0.229.206/32	10.0.229.206 – 10.0.229.206	10.0.229.206
208	10.0.229.207/32	10.0.229.207 – 10.0.229.207	10.0.229.207
209	10.0.229.208/32	10.0.229.208 – 10.0.229.208	10.0.229.208
210	10.0.229.209/32	10.0.229.209 – 10.0.229.209	10.0.229.209
211	10.0.229.210/32	10.0.229.210 – 10.0.229.210	10.0.229.210
212	10.0.229.211/32	10.0.229.211 – 10.0.229.211	10.0.229.211
213	10.0.229.212/32	10.0.229.212 – 10.0.229.212	10.0.229.212
214	10.0.229.213/32	10.0.229.213 – 10.0.229.213	10.0.229.213
215	10.0.229.214/32	10.0.229.214 – 10.0.229.214	10.0.229.214
216	10.0.229.215/32	10.0.229.215 – 10.0.229.215	10.0.229.215
217	10.0.229.216/32	10.0.229.216 – 10.0.229.216	10.0.229.216
218	10.0.229.217/32	10.0.229.217 – 10.0.229.217	10.0.229.217
219	10.0.229.218/32	10.0.229.218 – 10.0.229.218	10.0.229.218
220	10.0.229.219/32	10.0.229.219 – 10.0.229.219	10.0.229.219
221	10.0.229.220/32	10.0.229.220 – 10.0.229.220	10.0.229.220
222	10.0.229.221/32	10.0.229.221 – 10.0.229.221	10.0.229.221
223	10.0.229.222/32	10.0.229.222 – 10.0.229.222	10.0.229.222
224	10.0.229.223/32	10.0.229.223 – 10.0.229.223	10.0.229.223
225	10.0.229.224/32	10.0.229.224 – 10.0.229.224	10.0.229.224
226	10.0.229.225/32	10.0.229.225 – 10.0.229.225	10.0.229.225
227	10.0.229.226/32	10.0.229.226 – 10.0.229.226	10.0.229.226
228	10.0.229.227/32	10.0.229.227 – 10.0.229.227	10.0.229.227
229	10.0.229.228/32	10.0.229.228 – 10.0.229.228	10.0.229.228
230	10.0.229.229/32	10.0.229.229 – 10.0.229.229	10.0.229.229
231	10.0.229.230/32	10.0.229.230 – 10.0.229.230	10.0.229.230
232	10.0.229.231/32	10.0.229.231 – 10.0.229.231	10.0.229.231
233	10.0.229.232/32	10.0.229.232 – 10.0.229.232	10.0.229.232
234	10.0.229.233/32	10.0.229.233 – 10.0.229.233	10.0.229.233
235	10.0.229.234/32	10.0.229.234 – 10.0.229.234	10.0.229.234
236	10.0.229.235/32	10.0.229.235 – 10.0.229.235	10.0.229.235
237	10.0.229.236/32	10.0.229.236 – 10.0.229.236	10.0.229.236
238	10.0.229.237/32	10.0.229.237 – 10.0.229.237	10.0.229.237
239	10.0.229.238/32	10.0.229.238 – 10.0.229.238	10.0.229.238
240	10.0.229.239/32	10.0.229.239 – 10.0.229.239	10.0.229.239
241	10.0.229.240/32	10.0.229.240 – 10.0.229.240	10.0.229.240
242	10.0.229.241/32	10.0.229.241 – 10.0.229.241	10.0.229.241
243	10.0.229.242/32	10.0.229.242 – 10.0.229.242	10.0.229.242
244	10.0.229.243/32	10.0.229.243 – 10.0.229.243	10.0.229.243
245	10.0.229.244/32	10.0.229.244 – 10.0.229.244	10.0.229.244
246	10.0.229.245/32	10.0.229.245 – 10.0.229.245	10.0.229.245
247	10.0.229.246/32	10.0.229.246 – 10.0.229.246	10.0.229.246
248	10.0.229.247/32	10.0.229.247 – 10.0.229.247	10.0.229.247
249	10.0.229.248/32	10.0.229.248 – 10.0.229.248	10.0.229.248
250	10.0.229.249/32	10.0.229.249 – 10.0.229.249	10.0.229.249
251	10.0.229.250/32	10.0.229.250 – 10.0.229.250	10.0.229.250
252	10.0.229.251/32	10.0.229.251 – 10.0.229.251	10.0.229.251
253	10.0.229.252/32	10.0.229.252 – 10.0.229.252	10.0.229.252
254	10.0.229.253/32	10.0.229.253 – 10.0.229.253	10.0.229.253
255	10.0.229.254/32	10.0.229.254 – 10.0.229.254	10.0.229.254
256	10.0.229.255/32	10.0.229.255 – 10.0.229.255	10.0.229.255

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 /24
/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	-
/24	255.255.255.0	256	254	1
/25	255.255.255.128	128	126	2 split →
/26	255.255.255.192	64	62	4 split →
/27	255.255.255.224	32	30	8 split →
/28	255.255.255.240	16	14	16 split →
/29	255.255.255.248	8	6	32 split →
/30	255.255.255.252	4	2	64 split →
/31	255.255.255.254	2	2	128 split →
/32	255.255.255.255	1	1	256 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 →