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)10.6.41.0/24

network10.6.41.0/24

broadcast10.6.41.255

first host10.6.41.1

last host10.6.41.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.6.41.0/24

address00001010.00000110.00101001.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.00000110.00101001.00000000

broadcast00001010.00000110.00101001.11111111

green = network part, grey = host part

hex0x0a062900

decimal168175872

reverse dns0.41.6.10.in-addr.arpa

ipv4-mapped::ffff:a06:2900

/24 split into /32 · 256 subnets

close ×

#	network	host range	broadcast
1	10.6.41.0/32	10.6.41.0 – 10.6.41.0	10.6.41.0
2	10.6.41.1/32	10.6.41.1 – 10.6.41.1	10.6.41.1
3	10.6.41.2/32	10.6.41.2 – 10.6.41.2	10.6.41.2
4	10.6.41.3/32	10.6.41.3 – 10.6.41.3	10.6.41.3
5	10.6.41.4/32	10.6.41.4 – 10.6.41.4	10.6.41.4
6	10.6.41.5/32	10.6.41.5 – 10.6.41.5	10.6.41.5
7	10.6.41.6/32	10.6.41.6 – 10.6.41.6	10.6.41.6
8	10.6.41.7/32	10.6.41.7 – 10.6.41.7	10.6.41.7
9	10.6.41.8/32	10.6.41.8 – 10.6.41.8	10.6.41.8
10	10.6.41.9/32	10.6.41.9 – 10.6.41.9	10.6.41.9
11	10.6.41.10/32	10.6.41.10 – 10.6.41.10	10.6.41.10
12	10.6.41.11/32	10.6.41.11 – 10.6.41.11	10.6.41.11
13	10.6.41.12/32	10.6.41.12 – 10.6.41.12	10.6.41.12
14	10.6.41.13/32	10.6.41.13 – 10.6.41.13	10.6.41.13
15	10.6.41.14/32	10.6.41.14 – 10.6.41.14	10.6.41.14
16	10.6.41.15/32	10.6.41.15 – 10.6.41.15	10.6.41.15
17	10.6.41.16/32	10.6.41.16 – 10.6.41.16	10.6.41.16
18	10.6.41.17/32	10.6.41.17 – 10.6.41.17	10.6.41.17
19	10.6.41.18/32	10.6.41.18 – 10.6.41.18	10.6.41.18
20	10.6.41.19/32	10.6.41.19 – 10.6.41.19	10.6.41.19
21	10.6.41.20/32	10.6.41.20 – 10.6.41.20	10.6.41.20
22	10.6.41.21/32	10.6.41.21 – 10.6.41.21	10.6.41.21
23	10.6.41.22/32	10.6.41.22 – 10.6.41.22	10.6.41.22
24	10.6.41.23/32	10.6.41.23 – 10.6.41.23	10.6.41.23
25	10.6.41.24/32	10.6.41.24 – 10.6.41.24	10.6.41.24
26	10.6.41.25/32	10.6.41.25 – 10.6.41.25	10.6.41.25
27	10.6.41.26/32	10.6.41.26 – 10.6.41.26	10.6.41.26
28	10.6.41.27/32	10.6.41.27 – 10.6.41.27	10.6.41.27
29	10.6.41.28/32	10.6.41.28 – 10.6.41.28	10.6.41.28
30	10.6.41.29/32	10.6.41.29 – 10.6.41.29	10.6.41.29
31	10.6.41.30/32	10.6.41.30 – 10.6.41.30	10.6.41.30
32	10.6.41.31/32	10.6.41.31 – 10.6.41.31	10.6.41.31
33	10.6.41.32/32	10.6.41.32 – 10.6.41.32	10.6.41.32
34	10.6.41.33/32	10.6.41.33 – 10.6.41.33	10.6.41.33
35	10.6.41.34/32	10.6.41.34 – 10.6.41.34	10.6.41.34
36	10.6.41.35/32	10.6.41.35 – 10.6.41.35	10.6.41.35
37	10.6.41.36/32	10.6.41.36 – 10.6.41.36	10.6.41.36
38	10.6.41.37/32	10.6.41.37 – 10.6.41.37	10.6.41.37
39	10.6.41.38/32	10.6.41.38 – 10.6.41.38	10.6.41.38
40	10.6.41.39/32	10.6.41.39 – 10.6.41.39	10.6.41.39
41	10.6.41.40/32	10.6.41.40 – 10.6.41.40	10.6.41.40
42	10.6.41.41/32	10.6.41.41 – 10.6.41.41	10.6.41.41
43	10.6.41.42/32	10.6.41.42 – 10.6.41.42	10.6.41.42
44	10.6.41.43/32	10.6.41.43 – 10.6.41.43	10.6.41.43
45	10.6.41.44/32	10.6.41.44 – 10.6.41.44	10.6.41.44
46	10.6.41.45/32	10.6.41.45 – 10.6.41.45	10.6.41.45
47	10.6.41.46/32	10.6.41.46 – 10.6.41.46	10.6.41.46
48	10.6.41.47/32	10.6.41.47 – 10.6.41.47	10.6.41.47
49	10.6.41.48/32	10.6.41.48 – 10.6.41.48	10.6.41.48
50	10.6.41.49/32	10.6.41.49 – 10.6.41.49	10.6.41.49
51	10.6.41.50/32	10.6.41.50 – 10.6.41.50	10.6.41.50
52	10.6.41.51/32	10.6.41.51 – 10.6.41.51	10.6.41.51
53	10.6.41.52/32	10.6.41.52 – 10.6.41.52	10.6.41.52
54	10.6.41.53/32	10.6.41.53 – 10.6.41.53	10.6.41.53
55	10.6.41.54/32	10.6.41.54 – 10.6.41.54	10.6.41.54
56	10.6.41.55/32	10.6.41.55 – 10.6.41.55	10.6.41.55
57	10.6.41.56/32	10.6.41.56 – 10.6.41.56	10.6.41.56
58	10.6.41.57/32	10.6.41.57 – 10.6.41.57	10.6.41.57
59	10.6.41.58/32	10.6.41.58 – 10.6.41.58	10.6.41.58
60	10.6.41.59/32	10.6.41.59 – 10.6.41.59	10.6.41.59
61	10.6.41.60/32	10.6.41.60 – 10.6.41.60	10.6.41.60
62	10.6.41.61/32	10.6.41.61 – 10.6.41.61	10.6.41.61
63	10.6.41.62/32	10.6.41.62 – 10.6.41.62	10.6.41.62
64	10.6.41.63/32	10.6.41.63 – 10.6.41.63	10.6.41.63
65	10.6.41.64/32	10.6.41.64 – 10.6.41.64	10.6.41.64
66	10.6.41.65/32	10.6.41.65 – 10.6.41.65	10.6.41.65
67	10.6.41.66/32	10.6.41.66 – 10.6.41.66	10.6.41.66
68	10.6.41.67/32	10.6.41.67 – 10.6.41.67	10.6.41.67
69	10.6.41.68/32	10.6.41.68 – 10.6.41.68	10.6.41.68
70	10.6.41.69/32	10.6.41.69 – 10.6.41.69	10.6.41.69
71	10.6.41.70/32	10.6.41.70 – 10.6.41.70	10.6.41.70
72	10.6.41.71/32	10.6.41.71 – 10.6.41.71	10.6.41.71
73	10.6.41.72/32	10.6.41.72 – 10.6.41.72	10.6.41.72
74	10.6.41.73/32	10.6.41.73 – 10.6.41.73	10.6.41.73
75	10.6.41.74/32	10.6.41.74 – 10.6.41.74	10.6.41.74
76	10.6.41.75/32	10.6.41.75 – 10.6.41.75	10.6.41.75
77	10.6.41.76/32	10.6.41.76 – 10.6.41.76	10.6.41.76
78	10.6.41.77/32	10.6.41.77 – 10.6.41.77	10.6.41.77
79	10.6.41.78/32	10.6.41.78 – 10.6.41.78	10.6.41.78
80	10.6.41.79/32	10.6.41.79 – 10.6.41.79	10.6.41.79
81	10.6.41.80/32	10.6.41.80 – 10.6.41.80	10.6.41.80
82	10.6.41.81/32	10.6.41.81 – 10.6.41.81	10.6.41.81
83	10.6.41.82/32	10.6.41.82 – 10.6.41.82	10.6.41.82
84	10.6.41.83/32	10.6.41.83 – 10.6.41.83	10.6.41.83
85	10.6.41.84/32	10.6.41.84 – 10.6.41.84	10.6.41.84
86	10.6.41.85/32	10.6.41.85 – 10.6.41.85	10.6.41.85
87	10.6.41.86/32	10.6.41.86 – 10.6.41.86	10.6.41.86
88	10.6.41.87/32	10.6.41.87 – 10.6.41.87	10.6.41.87
89	10.6.41.88/32	10.6.41.88 – 10.6.41.88	10.6.41.88
90	10.6.41.89/32	10.6.41.89 – 10.6.41.89	10.6.41.89
91	10.6.41.90/32	10.6.41.90 – 10.6.41.90	10.6.41.90
92	10.6.41.91/32	10.6.41.91 – 10.6.41.91	10.6.41.91
93	10.6.41.92/32	10.6.41.92 – 10.6.41.92	10.6.41.92
94	10.6.41.93/32	10.6.41.93 – 10.6.41.93	10.6.41.93
95	10.6.41.94/32	10.6.41.94 – 10.6.41.94	10.6.41.94
96	10.6.41.95/32	10.6.41.95 – 10.6.41.95	10.6.41.95
97	10.6.41.96/32	10.6.41.96 – 10.6.41.96	10.6.41.96
98	10.6.41.97/32	10.6.41.97 – 10.6.41.97	10.6.41.97
99	10.6.41.98/32	10.6.41.98 – 10.6.41.98	10.6.41.98
100	10.6.41.99/32	10.6.41.99 – 10.6.41.99	10.6.41.99
101	10.6.41.100/32	10.6.41.100 – 10.6.41.100	10.6.41.100
102	10.6.41.101/32	10.6.41.101 – 10.6.41.101	10.6.41.101
103	10.6.41.102/32	10.6.41.102 – 10.6.41.102	10.6.41.102
104	10.6.41.103/32	10.6.41.103 – 10.6.41.103	10.6.41.103
105	10.6.41.104/32	10.6.41.104 – 10.6.41.104	10.6.41.104
106	10.6.41.105/32	10.6.41.105 – 10.6.41.105	10.6.41.105
107	10.6.41.106/32	10.6.41.106 – 10.6.41.106	10.6.41.106
108	10.6.41.107/32	10.6.41.107 – 10.6.41.107	10.6.41.107
109	10.6.41.108/32	10.6.41.108 – 10.6.41.108	10.6.41.108
110	10.6.41.109/32	10.6.41.109 – 10.6.41.109	10.6.41.109
111	10.6.41.110/32	10.6.41.110 – 10.6.41.110	10.6.41.110
112	10.6.41.111/32	10.6.41.111 – 10.6.41.111	10.6.41.111
113	10.6.41.112/32	10.6.41.112 – 10.6.41.112	10.6.41.112
114	10.6.41.113/32	10.6.41.113 – 10.6.41.113	10.6.41.113
115	10.6.41.114/32	10.6.41.114 – 10.6.41.114	10.6.41.114
116	10.6.41.115/32	10.6.41.115 – 10.6.41.115	10.6.41.115
117	10.6.41.116/32	10.6.41.116 – 10.6.41.116	10.6.41.116
118	10.6.41.117/32	10.6.41.117 – 10.6.41.117	10.6.41.117
119	10.6.41.118/32	10.6.41.118 – 10.6.41.118	10.6.41.118
120	10.6.41.119/32	10.6.41.119 – 10.6.41.119	10.6.41.119
121	10.6.41.120/32	10.6.41.120 – 10.6.41.120	10.6.41.120
122	10.6.41.121/32	10.6.41.121 – 10.6.41.121	10.6.41.121
123	10.6.41.122/32	10.6.41.122 – 10.6.41.122	10.6.41.122
124	10.6.41.123/32	10.6.41.123 – 10.6.41.123	10.6.41.123
125	10.6.41.124/32	10.6.41.124 – 10.6.41.124	10.6.41.124
126	10.6.41.125/32	10.6.41.125 – 10.6.41.125	10.6.41.125
127	10.6.41.126/32	10.6.41.126 – 10.6.41.126	10.6.41.126
128	10.6.41.127/32	10.6.41.127 – 10.6.41.127	10.6.41.127
129	10.6.41.128/32	10.6.41.128 – 10.6.41.128	10.6.41.128
130	10.6.41.129/32	10.6.41.129 – 10.6.41.129	10.6.41.129
131	10.6.41.130/32	10.6.41.130 – 10.6.41.130	10.6.41.130
132	10.6.41.131/32	10.6.41.131 – 10.6.41.131	10.6.41.131
133	10.6.41.132/32	10.6.41.132 – 10.6.41.132	10.6.41.132
134	10.6.41.133/32	10.6.41.133 – 10.6.41.133	10.6.41.133
135	10.6.41.134/32	10.6.41.134 – 10.6.41.134	10.6.41.134
136	10.6.41.135/32	10.6.41.135 – 10.6.41.135	10.6.41.135
137	10.6.41.136/32	10.6.41.136 – 10.6.41.136	10.6.41.136
138	10.6.41.137/32	10.6.41.137 – 10.6.41.137	10.6.41.137
139	10.6.41.138/32	10.6.41.138 – 10.6.41.138	10.6.41.138
140	10.6.41.139/32	10.6.41.139 – 10.6.41.139	10.6.41.139
141	10.6.41.140/32	10.6.41.140 – 10.6.41.140	10.6.41.140
142	10.6.41.141/32	10.6.41.141 – 10.6.41.141	10.6.41.141
143	10.6.41.142/32	10.6.41.142 – 10.6.41.142	10.6.41.142
144	10.6.41.143/32	10.6.41.143 – 10.6.41.143	10.6.41.143
145	10.6.41.144/32	10.6.41.144 – 10.6.41.144	10.6.41.144
146	10.6.41.145/32	10.6.41.145 – 10.6.41.145	10.6.41.145
147	10.6.41.146/32	10.6.41.146 – 10.6.41.146	10.6.41.146
148	10.6.41.147/32	10.6.41.147 – 10.6.41.147	10.6.41.147
149	10.6.41.148/32	10.6.41.148 – 10.6.41.148	10.6.41.148
150	10.6.41.149/32	10.6.41.149 – 10.6.41.149	10.6.41.149
151	10.6.41.150/32	10.6.41.150 – 10.6.41.150	10.6.41.150
152	10.6.41.151/32	10.6.41.151 – 10.6.41.151	10.6.41.151
153	10.6.41.152/32	10.6.41.152 – 10.6.41.152	10.6.41.152
154	10.6.41.153/32	10.6.41.153 – 10.6.41.153	10.6.41.153
155	10.6.41.154/32	10.6.41.154 – 10.6.41.154	10.6.41.154
156	10.6.41.155/32	10.6.41.155 – 10.6.41.155	10.6.41.155
157	10.6.41.156/32	10.6.41.156 – 10.6.41.156	10.6.41.156
158	10.6.41.157/32	10.6.41.157 – 10.6.41.157	10.6.41.157
159	10.6.41.158/32	10.6.41.158 – 10.6.41.158	10.6.41.158
160	10.6.41.159/32	10.6.41.159 – 10.6.41.159	10.6.41.159
161	10.6.41.160/32	10.6.41.160 – 10.6.41.160	10.6.41.160
162	10.6.41.161/32	10.6.41.161 – 10.6.41.161	10.6.41.161
163	10.6.41.162/32	10.6.41.162 – 10.6.41.162	10.6.41.162
164	10.6.41.163/32	10.6.41.163 – 10.6.41.163	10.6.41.163
165	10.6.41.164/32	10.6.41.164 – 10.6.41.164	10.6.41.164
166	10.6.41.165/32	10.6.41.165 – 10.6.41.165	10.6.41.165
167	10.6.41.166/32	10.6.41.166 – 10.6.41.166	10.6.41.166
168	10.6.41.167/32	10.6.41.167 – 10.6.41.167	10.6.41.167
169	10.6.41.168/32	10.6.41.168 – 10.6.41.168	10.6.41.168
170	10.6.41.169/32	10.6.41.169 – 10.6.41.169	10.6.41.169
171	10.6.41.170/32	10.6.41.170 – 10.6.41.170	10.6.41.170
172	10.6.41.171/32	10.6.41.171 – 10.6.41.171	10.6.41.171
173	10.6.41.172/32	10.6.41.172 – 10.6.41.172	10.6.41.172
174	10.6.41.173/32	10.6.41.173 – 10.6.41.173	10.6.41.173
175	10.6.41.174/32	10.6.41.174 – 10.6.41.174	10.6.41.174
176	10.6.41.175/32	10.6.41.175 – 10.6.41.175	10.6.41.175
177	10.6.41.176/32	10.6.41.176 – 10.6.41.176	10.6.41.176
178	10.6.41.177/32	10.6.41.177 – 10.6.41.177	10.6.41.177
179	10.6.41.178/32	10.6.41.178 – 10.6.41.178	10.6.41.178
180	10.6.41.179/32	10.6.41.179 – 10.6.41.179	10.6.41.179
181	10.6.41.180/32	10.6.41.180 – 10.6.41.180	10.6.41.180
182	10.6.41.181/32	10.6.41.181 – 10.6.41.181	10.6.41.181
183	10.6.41.182/32	10.6.41.182 – 10.6.41.182	10.6.41.182
184	10.6.41.183/32	10.6.41.183 – 10.6.41.183	10.6.41.183
185	10.6.41.184/32	10.6.41.184 – 10.6.41.184	10.6.41.184
186	10.6.41.185/32	10.6.41.185 – 10.6.41.185	10.6.41.185
187	10.6.41.186/32	10.6.41.186 – 10.6.41.186	10.6.41.186
188	10.6.41.187/32	10.6.41.187 – 10.6.41.187	10.6.41.187
189	10.6.41.188/32	10.6.41.188 – 10.6.41.188	10.6.41.188
190	10.6.41.189/32	10.6.41.189 – 10.6.41.189	10.6.41.189
191	10.6.41.190/32	10.6.41.190 – 10.6.41.190	10.6.41.190
192	10.6.41.191/32	10.6.41.191 – 10.6.41.191	10.6.41.191
193	10.6.41.192/32	10.6.41.192 – 10.6.41.192	10.6.41.192
194	10.6.41.193/32	10.6.41.193 – 10.6.41.193	10.6.41.193
195	10.6.41.194/32	10.6.41.194 – 10.6.41.194	10.6.41.194
196	10.6.41.195/32	10.6.41.195 – 10.6.41.195	10.6.41.195
197	10.6.41.196/32	10.6.41.196 – 10.6.41.196	10.6.41.196
198	10.6.41.197/32	10.6.41.197 – 10.6.41.197	10.6.41.197
199	10.6.41.198/32	10.6.41.198 – 10.6.41.198	10.6.41.198
200	10.6.41.199/32	10.6.41.199 – 10.6.41.199	10.6.41.199
201	10.6.41.200/32	10.6.41.200 – 10.6.41.200	10.6.41.200
202	10.6.41.201/32	10.6.41.201 – 10.6.41.201	10.6.41.201
203	10.6.41.202/32	10.6.41.202 – 10.6.41.202	10.6.41.202
204	10.6.41.203/32	10.6.41.203 – 10.6.41.203	10.6.41.203
205	10.6.41.204/32	10.6.41.204 – 10.6.41.204	10.6.41.204
206	10.6.41.205/32	10.6.41.205 – 10.6.41.205	10.6.41.205
207	10.6.41.206/32	10.6.41.206 – 10.6.41.206	10.6.41.206
208	10.6.41.207/32	10.6.41.207 – 10.6.41.207	10.6.41.207
209	10.6.41.208/32	10.6.41.208 – 10.6.41.208	10.6.41.208
210	10.6.41.209/32	10.6.41.209 – 10.6.41.209	10.6.41.209
211	10.6.41.210/32	10.6.41.210 – 10.6.41.210	10.6.41.210
212	10.6.41.211/32	10.6.41.211 – 10.6.41.211	10.6.41.211
213	10.6.41.212/32	10.6.41.212 – 10.6.41.212	10.6.41.212
214	10.6.41.213/32	10.6.41.213 – 10.6.41.213	10.6.41.213
215	10.6.41.214/32	10.6.41.214 – 10.6.41.214	10.6.41.214
216	10.6.41.215/32	10.6.41.215 – 10.6.41.215	10.6.41.215
217	10.6.41.216/32	10.6.41.216 – 10.6.41.216	10.6.41.216
218	10.6.41.217/32	10.6.41.217 – 10.6.41.217	10.6.41.217
219	10.6.41.218/32	10.6.41.218 – 10.6.41.218	10.6.41.218
220	10.6.41.219/32	10.6.41.219 – 10.6.41.219	10.6.41.219
221	10.6.41.220/32	10.6.41.220 – 10.6.41.220	10.6.41.220
222	10.6.41.221/32	10.6.41.221 – 10.6.41.221	10.6.41.221
223	10.6.41.222/32	10.6.41.222 – 10.6.41.222	10.6.41.222
224	10.6.41.223/32	10.6.41.223 – 10.6.41.223	10.6.41.223
225	10.6.41.224/32	10.6.41.224 – 10.6.41.224	10.6.41.224
226	10.6.41.225/32	10.6.41.225 – 10.6.41.225	10.6.41.225
227	10.6.41.226/32	10.6.41.226 – 10.6.41.226	10.6.41.226
228	10.6.41.227/32	10.6.41.227 – 10.6.41.227	10.6.41.227
229	10.6.41.228/32	10.6.41.228 – 10.6.41.228	10.6.41.228
230	10.6.41.229/32	10.6.41.229 – 10.6.41.229	10.6.41.229
231	10.6.41.230/32	10.6.41.230 – 10.6.41.230	10.6.41.230
232	10.6.41.231/32	10.6.41.231 – 10.6.41.231	10.6.41.231
233	10.6.41.232/32	10.6.41.232 – 10.6.41.232	10.6.41.232
234	10.6.41.233/32	10.6.41.233 – 10.6.41.233	10.6.41.233
235	10.6.41.234/32	10.6.41.234 – 10.6.41.234	10.6.41.234
236	10.6.41.235/32	10.6.41.235 – 10.6.41.235	10.6.41.235
237	10.6.41.236/32	10.6.41.236 – 10.6.41.236	10.6.41.236
238	10.6.41.237/32	10.6.41.237 – 10.6.41.237	10.6.41.237
239	10.6.41.238/32	10.6.41.238 – 10.6.41.238	10.6.41.238
240	10.6.41.239/32	10.6.41.239 – 10.6.41.239	10.6.41.239
241	10.6.41.240/32	10.6.41.240 – 10.6.41.240	10.6.41.240
242	10.6.41.241/32	10.6.41.241 – 10.6.41.241	10.6.41.241
243	10.6.41.242/32	10.6.41.242 – 10.6.41.242	10.6.41.242
244	10.6.41.243/32	10.6.41.243 – 10.6.41.243	10.6.41.243
245	10.6.41.244/32	10.6.41.244 – 10.6.41.244	10.6.41.244
246	10.6.41.245/32	10.6.41.245 – 10.6.41.245	10.6.41.245
247	10.6.41.246/32	10.6.41.246 – 10.6.41.246	10.6.41.246
248	10.6.41.247/32	10.6.41.247 – 10.6.41.247	10.6.41.247
249	10.6.41.248/32	10.6.41.248 – 10.6.41.248	10.6.41.248
250	10.6.41.249/32	10.6.41.249 – 10.6.41.249	10.6.41.249
251	10.6.41.250/32	10.6.41.250 – 10.6.41.250	10.6.41.250
252	10.6.41.251/32	10.6.41.251 – 10.6.41.251	10.6.41.251
253	10.6.41.252/32	10.6.41.252 – 10.6.41.252	10.6.41.252
254	10.6.41.253/32	10.6.41.253 – 10.6.41.253	10.6.41.253
255	10.6.41.254/32	10.6.41.254 – 10.6.41.254	10.6.41.254
256	10.6.41.255/32	10.6.41.255 – 10.6.41.255	10.6.41.255

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 →