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)10.167.160.0/19

network10.167.160.0/19

broadcast10.167.191.255

first host10.167.160.1

last host10.167.191.254

subnet mask255.255.224.0

wildcard0.0.31.255

addresses8,192

usable hosts8,190

classA

ipcalc 10.167.160.0/19

address00001010.10100111.10100000.00000000

subnet mask11111111.11111111.11100000.00000000

network00001010.10100111.10100000.00000000

broadcast00001010.10100111.10111111.11111111

green = network part, grey = host part

hex0x0aa7a000

decimal178757632

reverse dns0.160.167.10.in-addr.arpa

ipv4-mapped::ffff:aa7:a000

/19 split into /32 · 8,192 subnets

close ×

#	network	host range	broadcast
1	10.167.160.0/32	10.167.160.0 – 10.167.160.0	10.167.160.0
2	10.167.160.1/32	10.167.160.1 – 10.167.160.1	10.167.160.1
3	10.167.160.2/32	10.167.160.2 – 10.167.160.2	10.167.160.2
4	10.167.160.3/32	10.167.160.3 – 10.167.160.3	10.167.160.3
5	10.167.160.4/32	10.167.160.4 – 10.167.160.4	10.167.160.4
6	10.167.160.5/32	10.167.160.5 – 10.167.160.5	10.167.160.5
7	10.167.160.6/32	10.167.160.6 – 10.167.160.6	10.167.160.6
8	10.167.160.7/32	10.167.160.7 – 10.167.160.7	10.167.160.7
9	10.167.160.8/32	10.167.160.8 – 10.167.160.8	10.167.160.8
10	10.167.160.9/32	10.167.160.9 – 10.167.160.9	10.167.160.9
11	10.167.160.10/32	10.167.160.10 – 10.167.160.10	10.167.160.10
12	10.167.160.11/32	10.167.160.11 – 10.167.160.11	10.167.160.11
13	10.167.160.12/32	10.167.160.12 – 10.167.160.12	10.167.160.12
14	10.167.160.13/32	10.167.160.13 – 10.167.160.13	10.167.160.13
15	10.167.160.14/32	10.167.160.14 – 10.167.160.14	10.167.160.14
16	10.167.160.15/32	10.167.160.15 – 10.167.160.15	10.167.160.15
17	10.167.160.16/32	10.167.160.16 – 10.167.160.16	10.167.160.16
18	10.167.160.17/32	10.167.160.17 – 10.167.160.17	10.167.160.17
19	10.167.160.18/32	10.167.160.18 – 10.167.160.18	10.167.160.18
20	10.167.160.19/32	10.167.160.19 – 10.167.160.19	10.167.160.19
21	10.167.160.20/32	10.167.160.20 – 10.167.160.20	10.167.160.20
22	10.167.160.21/32	10.167.160.21 – 10.167.160.21	10.167.160.21
23	10.167.160.22/32	10.167.160.22 – 10.167.160.22	10.167.160.22
24	10.167.160.23/32	10.167.160.23 – 10.167.160.23	10.167.160.23
25	10.167.160.24/32	10.167.160.24 – 10.167.160.24	10.167.160.24
26	10.167.160.25/32	10.167.160.25 – 10.167.160.25	10.167.160.25
27	10.167.160.26/32	10.167.160.26 – 10.167.160.26	10.167.160.26
28	10.167.160.27/32	10.167.160.27 – 10.167.160.27	10.167.160.27
29	10.167.160.28/32	10.167.160.28 – 10.167.160.28	10.167.160.28
30	10.167.160.29/32	10.167.160.29 – 10.167.160.29	10.167.160.29
31	10.167.160.30/32	10.167.160.30 – 10.167.160.30	10.167.160.30
32	10.167.160.31/32	10.167.160.31 – 10.167.160.31	10.167.160.31
33	10.167.160.32/32	10.167.160.32 – 10.167.160.32	10.167.160.32
34	10.167.160.33/32	10.167.160.33 – 10.167.160.33	10.167.160.33
35	10.167.160.34/32	10.167.160.34 – 10.167.160.34	10.167.160.34
36	10.167.160.35/32	10.167.160.35 – 10.167.160.35	10.167.160.35
37	10.167.160.36/32	10.167.160.36 – 10.167.160.36	10.167.160.36
38	10.167.160.37/32	10.167.160.37 – 10.167.160.37	10.167.160.37
39	10.167.160.38/32	10.167.160.38 – 10.167.160.38	10.167.160.38
40	10.167.160.39/32	10.167.160.39 – 10.167.160.39	10.167.160.39
41	10.167.160.40/32	10.167.160.40 – 10.167.160.40	10.167.160.40
42	10.167.160.41/32	10.167.160.41 – 10.167.160.41	10.167.160.41
43	10.167.160.42/32	10.167.160.42 – 10.167.160.42	10.167.160.42
44	10.167.160.43/32	10.167.160.43 – 10.167.160.43	10.167.160.43
45	10.167.160.44/32	10.167.160.44 – 10.167.160.44	10.167.160.44
46	10.167.160.45/32	10.167.160.45 – 10.167.160.45	10.167.160.45
47	10.167.160.46/32	10.167.160.46 – 10.167.160.46	10.167.160.46
48	10.167.160.47/32	10.167.160.47 – 10.167.160.47	10.167.160.47
49	10.167.160.48/32	10.167.160.48 – 10.167.160.48	10.167.160.48
50	10.167.160.49/32	10.167.160.49 – 10.167.160.49	10.167.160.49
51	10.167.160.50/32	10.167.160.50 – 10.167.160.50	10.167.160.50
52	10.167.160.51/32	10.167.160.51 – 10.167.160.51	10.167.160.51
53	10.167.160.52/32	10.167.160.52 – 10.167.160.52	10.167.160.52
54	10.167.160.53/32	10.167.160.53 – 10.167.160.53	10.167.160.53
55	10.167.160.54/32	10.167.160.54 – 10.167.160.54	10.167.160.54
56	10.167.160.55/32	10.167.160.55 – 10.167.160.55	10.167.160.55
57	10.167.160.56/32	10.167.160.56 – 10.167.160.56	10.167.160.56
58	10.167.160.57/32	10.167.160.57 – 10.167.160.57	10.167.160.57
59	10.167.160.58/32	10.167.160.58 – 10.167.160.58	10.167.160.58
60	10.167.160.59/32	10.167.160.59 – 10.167.160.59	10.167.160.59
61	10.167.160.60/32	10.167.160.60 – 10.167.160.60	10.167.160.60
62	10.167.160.61/32	10.167.160.61 – 10.167.160.61	10.167.160.61
63	10.167.160.62/32	10.167.160.62 – 10.167.160.62	10.167.160.62
64	10.167.160.63/32	10.167.160.63 – 10.167.160.63	10.167.160.63
65	10.167.160.64/32	10.167.160.64 – 10.167.160.64	10.167.160.64
66	10.167.160.65/32	10.167.160.65 – 10.167.160.65	10.167.160.65
67	10.167.160.66/32	10.167.160.66 – 10.167.160.66	10.167.160.66
68	10.167.160.67/32	10.167.160.67 – 10.167.160.67	10.167.160.67
69	10.167.160.68/32	10.167.160.68 – 10.167.160.68	10.167.160.68
70	10.167.160.69/32	10.167.160.69 – 10.167.160.69	10.167.160.69
71	10.167.160.70/32	10.167.160.70 – 10.167.160.70	10.167.160.70
72	10.167.160.71/32	10.167.160.71 – 10.167.160.71	10.167.160.71
73	10.167.160.72/32	10.167.160.72 – 10.167.160.72	10.167.160.72
74	10.167.160.73/32	10.167.160.73 – 10.167.160.73	10.167.160.73
75	10.167.160.74/32	10.167.160.74 – 10.167.160.74	10.167.160.74
76	10.167.160.75/32	10.167.160.75 – 10.167.160.75	10.167.160.75
77	10.167.160.76/32	10.167.160.76 – 10.167.160.76	10.167.160.76
78	10.167.160.77/32	10.167.160.77 – 10.167.160.77	10.167.160.77
79	10.167.160.78/32	10.167.160.78 – 10.167.160.78	10.167.160.78
80	10.167.160.79/32	10.167.160.79 – 10.167.160.79	10.167.160.79
81	10.167.160.80/32	10.167.160.80 – 10.167.160.80	10.167.160.80
82	10.167.160.81/32	10.167.160.81 – 10.167.160.81	10.167.160.81
83	10.167.160.82/32	10.167.160.82 – 10.167.160.82	10.167.160.82
84	10.167.160.83/32	10.167.160.83 – 10.167.160.83	10.167.160.83
85	10.167.160.84/32	10.167.160.84 – 10.167.160.84	10.167.160.84
86	10.167.160.85/32	10.167.160.85 – 10.167.160.85	10.167.160.85
87	10.167.160.86/32	10.167.160.86 – 10.167.160.86	10.167.160.86
88	10.167.160.87/32	10.167.160.87 – 10.167.160.87	10.167.160.87
89	10.167.160.88/32	10.167.160.88 – 10.167.160.88	10.167.160.88
90	10.167.160.89/32	10.167.160.89 – 10.167.160.89	10.167.160.89
91	10.167.160.90/32	10.167.160.90 – 10.167.160.90	10.167.160.90
92	10.167.160.91/32	10.167.160.91 – 10.167.160.91	10.167.160.91
93	10.167.160.92/32	10.167.160.92 – 10.167.160.92	10.167.160.92
94	10.167.160.93/32	10.167.160.93 – 10.167.160.93	10.167.160.93
95	10.167.160.94/32	10.167.160.94 – 10.167.160.94	10.167.160.94
96	10.167.160.95/32	10.167.160.95 – 10.167.160.95	10.167.160.95
97	10.167.160.96/32	10.167.160.96 – 10.167.160.96	10.167.160.96
98	10.167.160.97/32	10.167.160.97 – 10.167.160.97	10.167.160.97
99	10.167.160.98/32	10.167.160.98 – 10.167.160.98	10.167.160.98
100	10.167.160.99/32	10.167.160.99 – 10.167.160.99	10.167.160.99
101	10.167.160.100/32	10.167.160.100 – 10.167.160.100	10.167.160.100
102	10.167.160.101/32	10.167.160.101 – 10.167.160.101	10.167.160.101
103	10.167.160.102/32	10.167.160.102 – 10.167.160.102	10.167.160.102
104	10.167.160.103/32	10.167.160.103 – 10.167.160.103	10.167.160.103
105	10.167.160.104/32	10.167.160.104 – 10.167.160.104	10.167.160.104
106	10.167.160.105/32	10.167.160.105 – 10.167.160.105	10.167.160.105
107	10.167.160.106/32	10.167.160.106 – 10.167.160.106	10.167.160.106
108	10.167.160.107/32	10.167.160.107 – 10.167.160.107	10.167.160.107
109	10.167.160.108/32	10.167.160.108 – 10.167.160.108	10.167.160.108
110	10.167.160.109/32	10.167.160.109 – 10.167.160.109	10.167.160.109
111	10.167.160.110/32	10.167.160.110 – 10.167.160.110	10.167.160.110
112	10.167.160.111/32	10.167.160.111 – 10.167.160.111	10.167.160.111
113	10.167.160.112/32	10.167.160.112 – 10.167.160.112	10.167.160.112
114	10.167.160.113/32	10.167.160.113 – 10.167.160.113	10.167.160.113
115	10.167.160.114/32	10.167.160.114 – 10.167.160.114	10.167.160.114
116	10.167.160.115/32	10.167.160.115 – 10.167.160.115	10.167.160.115
117	10.167.160.116/32	10.167.160.116 – 10.167.160.116	10.167.160.116
118	10.167.160.117/32	10.167.160.117 – 10.167.160.117	10.167.160.117
119	10.167.160.118/32	10.167.160.118 – 10.167.160.118	10.167.160.118
120	10.167.160.119/32	10.167.160.119 – 10.167.160.119	10.167.160.119
121	10.167.160.120/32	10.167.160.120 – 10.167.160.120	10.167.160.120
122	10.167.160.121/32	10.167.160.121 – 10.167.160.121	10.167.160.121
123	10.167.160.122/32	10.167.160.122 – 10.167.160.122	10.167.160.122
124	10.167.160.123/32	10.167.160.123 – 10.167.160.123	10.167.160.123
125	10.167.160.124/32	10.167.160.124 – 10.167.160.124	10.167.160.124
126	10.167.160.125/32	10.167.160.125 – 10.167.160.125	10.167.160.125
127	10.167.160.126/32	10.167.160.126 – 10.167.160.126	10.167.160.126
128	10.167.160.127/32	10.167.160.127 – 10.167.160.127	10.167.160.127
129	10.167.160.128/32	10.167.160.128 – 10.167.160.128	10.167.160.128
130	10.167.160.129/32	10.167.160.129 – 10.167.160.129	10.167.160.129
131	10.167.160.130/32	10.167.160.130 – 10.167.160.130	10.167.160.130
132	10.167.160.131/32	10.167.160.131 – 10.167.160.131	10.167.160.131
133	10.167.160.132/32	10.167.160.132 – 10.167.160.132	10.167.160.132
134	10.167.160.133/32	10.167.160.133 – 10.167.160.133	10.167.160.133
135	10.167.160.134/32	10.167.160.134 – 10.167.160.134	10.167.160.134
136	10.167.160.135/32	10.167.160.135 – 10.167.160.135	10.167.160.135
137	10.167.160.136/32	10.167.160.136 – 10.167.160.136	10.167.160.136
138	10.167.160.137/32	10.167.160.137 – 10.167.160.137	10.167.160.137
139	10.167.160.138/32	10.167.160.138 – 10.167.160.138	10.167.160.138
140	10.167.160.139/32	10.167.160.139 – 10.167.160.139	10.167.160.139
141	10.167.160.140/32	10.167.160.140 – 10.167.160.140	10.167.160.140
142	10.167.160.141/32	10.167.160.141 – 10.167.160.141	10.167.160.141
143	10.167.160.142/32	10.167.160.142 – 10.167.160.142	10.167.160.142
144	10.167.160.143/32	10.167.160.143 – 10.167.160.143	10.167.160.143
145	10.167.160.144/32	10.167.160.144 – 10.167.160.144	10.167.160.144
146	10.167.160.145/32	10.167.160.145 – 10.167.160.145	10.167.160.145
147	10.167.160.146/32	10.167.160.146 – 10.167.160.146	10.167.160.146
148	10.167.160.147/32	10.167.160.147 – 10.167.160.147	10.167.160.147
149	10.167.160.148/32	10.167.160.148 – 10.167.160.148	10.167.160.148
150	10.167.160.149/32	10.167.160.149 – 10.167.160.149	10.167.160.149
151	10.167.160.150/32	10.167.160.150 – 10.167.160.150	10.167.160.150
152	10.167.160.151/32	10.167.160.151 – 10.167.160.151	10.167.160.151
153	10.167.160.152/32	10.167.160.152 – 10.167.160.152	10.167.160.152
154	10.167.160.153/32	10.167.160.153 – 10.167.160.153	10.167.160.153
155	10.167.160.154/32	10.167.160.154 – 10.167.160.154	10.167.160.154
156	10.167.160.155/32	10.167.160.155 – 10.167.160.155	10.167.160.155
157	10.167.160.156/32	10.167.160.156 – 10.167.160.156	10.167.160.156
158	10.167.160.157/32	10.167.160.157 – 10.167.160.157	10.167.160.157
159	10.167.160.158/32	10.167.160.158 – 10.167.160.158	10.167.160.158
160	10.167.160.159/32	10.167.160.159 – 10.167.160.159	10.167.160.159
161	10.167.160.160/32	10.167.160.160 – 10.167.160.160	10.167.160.160
162	10.167.160.161/32	10.167.160.161 – 10.167.160.161	10.167.160.161
163	10.167.160.162/32	10.167.160.162 – 10.167.160.162	10.167.160.162
164	10.167.160.163/32	10.167.160.163 – 10.167.160.163	10.167.160.163
165	10.167.160.164/32	10.167.160.164 – 10.167.160.164	10.167.160.164
166	10.167.160.165/32	10.167.160.165 – 10.167.160.165	10.167.160.165
167	10.167.160.166/32	10.167.160.166 – 10.167.160.166	10.167.160.166
168	10.167.160.167/32	10.167.160.167 – 10.167.160.167	10.167.160.167
169	10.167.160.168/32	10.167.160.168 – 10.167.160.168	10.167.160.168
170	10.167.160.169/32	10.167.160.169 – 10.167.160.169	10.167.160.169
171	10.167.160.170/32	10.167.160.170 – 10.167.160.170	10.167.160.170
172	10.167.160.171/32	10.167.160.171 – 10.167.160.171	10.167.160.171
173	10.167.160.172/32	10.167.160.172 – 10.167.160.172	10.167.160.172
174	10.167.160.173/32	10.167.160.173 – 10.167.160.173	10.167.160.173
175	10.167.160.174/32	10.167.160.174 – 10.167.160.174	10.167.160.174
176	10.167.160.175/32	10.167.160.175 – 10.167.160.175	10.167.160.175
177	10.167.160.176/32	10.167.160.176 – 10.167.160.176	10.167.160.176
178	10.167.160.177/32	10.167.160.177 – 10.167.160.177	10.167.160.177
179	10.167.160.178/32	10.167.160.178 – 10.167.160.178	10.167.160.178
180	10.167.160.179/32	10.167.160.179 – 10.167.160.179	10.167.160.179
181	10.167.160.180/32	10.167.160.180 – 10.167.160.180	10.167.160.180
182	10.167.160.181/32	10.167.160.181 – 10.167.160.181	10.167.160.181
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184	10.167.160.183/32	10.167.160.183 – 10.167.160.183	10.167.160.183
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189	10.167.160.188/32	10.167.160.188 – 10.167.160.188	10.167.160.188
190	10.167.160.189/32	10.167.160.189 – 10.167.160.189	10.167.160.189
191	10.167.160.190/32	10.167.160.190 – 10.167.160.190	10.167.160.190
192	10.167.160.191/32	10.167.160.191 – 10.167.160.191	10.167.160.191
193	10.167.160.192/32	10.167.160.192 – 10.167.160.192	10.167.160.192
194	10.167.160.193/32	10.167.160.193 – 10.167.160.193	10.167.160.193
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196	10.167.160.195/32	10.167.160.195 – 10.167.160.195	10.167.160.195
197	10.167.160.196/32	10.167.160.196 – 10.167.160.196	10.167.160.196
198	10.167.160.197/32	10.167.160.197 – 10.167.160.197	10.167.160.197
199	10.167.160.198/32	10.167.160.198 – 10.167.160.198	10.167.160.198
200	10.167.160.199/32	10.167.160.199 – 10.167.160.199	10.167.160.199
201	10.167.160.200/32	10.167.160.200 – 10.167.160.200	10.167.160.200
202	10.167.160.201/32	10.167.160.201 – 10.167.160.201	10.167.160.201
203	10.167.160.202/32	10.167.160.202 – 10.167.160.202	10.167.160.202
204	10.167.160.203/32	10.167.160.203 – 10.167.160.203	10.167.160.203
205	10.167.160.204/32	10.167.160.204 – 10.167.160.204	10.167.160.204
206	10.167.160.205/32	10.167.160.205 – 10.167.160.205	10.167.160.205
207	10.167.160.206/32	10.167.160.206 – 10.167.160.206	10.167.160.206
208	10.167.160.207/32	10.167.160.207 – 10.167.160.207	10.167.160.207
209	10.167.160.208/32	10.167.160.208 – 10.167.160.208	10.167.160.208
210	10.167.160.209/32	10.167.160.209 – 10.167.160.209	10.167.160.209
211	10.167.160.210/32	10.167.160.210 – 10.167.160.210	10.167.160.210
212	10.167.160.211/32	10.167.160.211 – 10.167.160.211	10.167.160.211
213	10.167.160.212/32	10.167.160.212 – 10.167.160.212	10.167.160.212
214	10.167.160.213/32	10.167.160.213 – 10.167.160.213	10.167.160.213
215	10.167.160.214/32	10.167.160.214 – 10.167.160.214	10.167.160.214
216	10.167.160.215/32	10.167.160.215 – 10.167.160.215	10.167.160.215
217	10.167.160.216/32	10.167.160.216 – 10.167.160.216	10.167.160.216
218	10.167.160.217/32	10.167.160.217 – 10.167.160.217	10.167.160.217
219	10.167.160.218/32	10.167.160.218 – 10.167.160.218	10.167.160.218
220	10.167.160.219/32	10.167.160.219 – 10.167.160.219	10.167.160.219
221	10.167.160.220/32	10.167.160.220 – 10.167.160.220	10.167.160.220
222	10.167.160.221/32	10.167.160.221 – 10.167.160.221	10.167.160.221
223	10.167.160.222/32	10.167.160.222 – 10.167.160.222	10.167.160.222
224	10.167.160.223/32	10.167.160.223 – 10.167.160.223	10.167.160.223
225	10.167.160.224/32	10.167.160.224 – 10.167.160.224	10.167.160.224
226	10.167.160.225/32	10.167.160.225 – 10.167.160.225	10.167.160.225
227	10.167.160.226/32	10.167.160.226 – 10.167.160.226	10.167.160.226
228	10.167.160.227/32	10.167.160.227 – 10.167.160.227	10.167.160.227
229	10.167.160.228/32	10.167.160.228 – 10.167.160.228	10.167.160.228
230	10.167.160.229/32	10.167.160.229 – 10.167.160.229	10.167.160.229
231	10.167.160.230/32	10.167.160.230 – 10.167.160.230	10.167.160.230
232	10.167.160.231/32	10.167.160.231 – 10.167.160.231	10.167.160.231
233	10.167.160.232/32	10.167.160.232 – 10.167.160.232	10.167.160.232
234	10.167.160.233/32	10.167.160.233 – 10.167.160.233	10.167.160.233
235	10.167.160.234/32	10.167.160.234 – 10.167.160.234	10.167.160.234
236	10.167.160.235/32	10.167.160.235 – 10.167.160.235	10.167.160.235
237	10.167.160.236/32	10.167.160.236 – 10.167.160.236	10.167.160.236
238	10.167.160.237/32	10.167.160.237 – 10.167.160.237	10.167.160.237
239	10.167.160.238/32	10.167.160.238 – 10.167.160.238	10.167.160.238
240	10.167.160.239/32	10.167.160.239 – 10.167.160.239	10.167.160.239
241	10.167.160.240/32	10.167.160.240 – 10.167.160.240	10.167.160.240
242	10.167.160.241/32	10.167.160.241 – 10.167.160.241	10.167.160.241
243	10.167.160.242/32	10.167.160.242 – 10.167.160.242	10.167.160.242
244	10.167.160.243/32	10.167.160.243 – 10.167.160.243	10.167.160.243
245	10.167.160.244/32	10.167.160.244 – 10.167.160.244	10.167.160.244
246	10.167.160.245/32	10.167.160.245 – 10.167.160.245	10.167.160.245
247	10.167.160.246/32	10.167.160.246 – 10.167.160.246	10.167.160.246
248	10.167.160.247/32	10.167.160.247 – 10.167.160.247	10.167.160.247
249	10.167.160.248/32	10.167.160.248 – 10.167.160.248	10.167.160.248
250	10.167.160.249/32	10.167.160.249 – 10.167.160.249	10.167.160.249
251	10.167.160.250/32	10.167.160.250 – 10.167.160.250	10.167.160.250
252	10.167.160.251/32	10.167.160.251 – 10.167.160.251	10.167.160.251
253	10.167.160.252/32	10.167.160.252 – 10.167.160.252	10.167.160.252
254	10.167.160.253/32	10.167.160.253 – 10.167.160.253	10.167.160.253
255	10.167.160.254/32	10.167.160.254 – 10.167.160.254	10.167.160.254
256	10.167.160.255/32	10.167.160.255 – 10.167.160.255	10.167.160.255

showing 256 of 8,192

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 /19
/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	1
/20	255.255.240.0	4,096	4,094	2 split →
/21	255.255.248.0	2,048	2,046	4 split →
/22	255.255.252.0	1,024	1,022	8 split →
/23	255.255.254.0	512	510	16 split →
/24	255.255.255.0	256	254	32 split →
/25	255.255.255.128	128	126	64 split →
/26	255.255.255.192	64	62	128 split →
/27	255.255.255.224	32	30	256 split →
/28	255.255.255.240	16	14	512 split →
/29	255.255.255.248	8	6	1,024 split →
/30	255.255.255.252	4	2	2,048 split →
/31	255.255.255.254	2	2	4,096 split →
/32	255.255.255.255	1	1	8,192 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 →