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)10.71.98.0/23

network10.71.98.0/23

broadcast10.71.99.255

first host10.71.98.1

last host10.71.99.254

subnet mask255.255.254.0

wildcard0.0.1.255

addresses512

usable hosts510

classA

ipcalc 10.71.98.0/23

address00001010.01000111.01100010.00000000

subnet mask11111111.11111111.11111110.00000000

network00001010.01000111.01100010.00000000

broadcast00001010.01000111.01100011.11111111

green = network part, grey = host part

hex0x0a476200

decimal172450304

reverse dns0.98.71.10.in-addr.arpa

ipv4-mapped::ffff:a47:6200

/23 split into /32 · 512 subnets

close ×

#	network	host range	broadcast
1	10.71.98.0/32	10.71.98.0 – 10.71.98.0	10.71.98.0
2	10.71.98.1/32	10.71.98.1 – 10.71.98.1	10.71.98.1
3	10.71.98.2/32	10.71.98.2 – 10.71.98.2	10.71.98.2
4	10.71.98.3/32	10.71.98.3 – 10.71.98.3	10.71.98.3
5	10.71.98.4/32	10.71.98.4 – 10.71.98.4	10.71.98.4
6	10.71.98.5/32	10.71.98.5 – 10.71.98.5	10.71.98.5
7	10.71.98.6/32	10.71.98.6 – 10.71.98.6	10.71.98.6
8	10.71.98.7/32	10.71.98.7 – 10.71.98.7	10.71.98.7
9	10.71.98.8/32	10.71.98.8 – 10.71.98.8	10.71.98.8
10	10.71.98.9/32	10.71.98.9 – 10.71.98.9	10.71.98.9
11	10.71.98.10/32	10.71.98.10 – 10.71.98.10	10.71.98.10
12	10.71.98.11/32	10.71.98.11 – 10.71.98.11	10.71.98.11
13	10.71.98.12/32	10.71.98.12 – 10.71.98.12	10.71.98.12
14	10.71.98.13/32	10.71.98.13 – 10.71.98.13	10.71.98.13
15	10.71.98.14/32	10.71.98.14 – 10.71.98.14	10.71.98.14
16	10.71.98.15/32	10.71.98.15 – 10.71.98.15	10.71.98.15
17	10.71.98.16/32	10.71.98.16 – 10.71.98.16	10.71.98.16
18	10.71.98.17/32	10.71.98.17 – 10.71.98.17	10.71.98.17
19	10.71.98.18/32	10.71.98.18 – 10.71.98.18	10.71.98.18
20	10.71.98.19/32	10.71.98.19 – 10.71.98.19	10.71.98.19
21	10.71.98.20/32	10.71.98.20 – 10.71.98.20	10.71.98.20
22	10.71.98.21/32	10.71.98.21 – 10.71.98.21	10.71.98.21
23	10.71.98.22/32	10.71.98.22 – 10.71.98.22	10.71.98.22
24	10.71.98.23/32	10.71.98.23 – 10.71.98.23	10.71.98.23
25	10.71.98.24/32	10.71.98.24 – 10.71.98.24	10.71.98.24
26	10.71.98.25/32	10.71.98.25 – 10.71.98.25	10.71.98.25
27	10.71.98.26/32	10.71.98.26 – 10.71.98.26	10.71.98.26
28	10.71.98.27/32	10.71.98.27 – 10.71.98.27	10.71.98.27
29	10.71.98.28/32	10.71.98.28 – 10.71.98.28	10.71.98.28
30	10.71.98.29/32	10.71.98.29 – 10.71.98.29	10.71.98.29
31	10.71.98.30/32	10.71.98.30 – 10.71.98.30	10.71.98.30
32	10.71.98.31/32	10.71.98.31 – 10.71.98.31	10.71.98.31
33	10.71.98.32/32	10.71.98.32 – 10.71.98.32	10.71.98.32
34	10.71.98.33/32	10.71.98.33 – 10.71.98.33	10.71.98.33
35	10.71.98.34/32	10.71.98.34 – 10.71.98.34	10.71.98.34
36	10.71.98.35/32	10.71.98.35 – 10.71.98.35	10.71.98.35
37	10.71.98.36/32	10.71.98.36 – 10.71.98.36	10.71.98.36
38	10.71.98.37/32	10.71.98.37 – 10.71.98.37	10.71.98.37
39	10.71.98.38/32	10.71.98.38 – 10.71.98.38	10.71.98.38
40	10.71.98.39/32	10.71.98.39 – 10.71.98.39	10.71.98.39
41	10.71.98.40/32	10.71.98.40 – 10.71.98.40	10.71.98.40
42	10.71.98.41/32	10.71.98.41 – 10.71.98.41	10.71.98.41
43	10.71.98.42/32	10.71.98.42 – 10.71.98.42	10.71.98.42
44	10.71.98.43/32	10.71.98.43 – 10.71.98.43	10.71.98.43
45	10.71.98.44/32	10.71.98.44 – 10.71.98.44	10.71.98.44
46	10.71.98.45/32	10.71.98.45 – 10.71.98.45	10.71.98.45
47	10.71.98.46/32	10.71.98.46 – 10.71.98.46	10.71.98.46
48	10.71.98.47/32	10.71.98.47 – 10.71.98.47	10.71.98.47
49	10.71.98.48/32	10.71.98.48 – 10.71.98.48	10.71.98.48
50	10.71.98.49/32	10.71.98.49 – 10.71.98.49	10.71.98.49
51	10.71.98.50/32	10.71.98.50 – 10.71.98.50	10.71.98.50
52	10.71.98.51/32	10.71.98.51 – 10.71.98.51	10.71.98.51
53	10.71.98.52/32	10.71.98.52 – 10.71.98.52	10.71.98.52
54	10.71.98.53/32	10.71.98.53 – 10.71.98.53	10.71.98.53
55	10.71.98.54/32	10.71.98.54 – 10.71.98.54	10.71.98.54
56	10.71.98.55/32	10.71.98.55 – 10.71.98.55	10.71.98.55
57	10.71.98.56/32	10.71.98.56 – 10.71.98.56	10.71.98.56
58	10.71.98.57/32	10.71.98.57 – 10.71.98.57	10.71.98.57
59	10.71.98.58/32	10.71.98.58 – 10.71.98.58	10.71.98.58
60	10.71.98.59/32	10.71.98.59 – 10.71.98.59	10.71.98.59
61	10.71.98.60/32	10.71.98.60 – 10.71.98.60	10.71.98.60
62	10.71.98.61/32	10.71.98.61 – 10.71.98.61	10.71.98.61
63	10.71.98.62/32	10.71.98.62 – 10.71.98.62	10.71.98.62
64	10.71.98.63/32	10.71.98.63 – 10.71.98.63	10.71.98.63
65	10.71.98.64/32	10.71.98.64 – 10.71.98.64	10.71.98.64
66	10.71.98.65/32	10.71.98.65 – 10.71.98.65	10.71.98.65
67	10.71.98.66/32	10.71.98.66 – 10.71.98.66	10.71.98.66
68	10.71.98.67/32	10.71.98.67 – 10.71.98.67	10.71.98.67
69	10.71.98.68/32	10.71.98.68 – 10.71.98.68	10.71.98.68
70	10.71.98.69/32	10.71.98.69 – 10.71.98.69	10.71.98.69
71	10.71.98.70/32	10.71.98.70 – 10.71.98.70	10.71.98.70
72	10.71.98.71/32	10.71.98.71 – 10.71.98.71	10.71.98.71
73	10.71.98.72/32	10.71.98.72 – 10.71.98.72	10.71.98.72
74	10.71.98.73/32	10.71.98.73 – 10.71.98.73	10.71.98.73
75	10.71.98.74/32	10.71.98.74 – 10.71.98.74	10.71.98.74
76	10.71.98.75/32	10.71.98.75 – 10.71.98.75	10.71.98.75
77	10.71.98.76/32	10.71.98.76 – 10.71.98.76	10.71.98.76
78	10.71.98.77/32	10.71.98.77 – 10.71.98.77	10.71.98.77
79	10.71.98.78/32	10.71.98.78 – 10.71.98.78	10.71.98.78
80	10.71.98.79/32	10.71.98.79 – 10.71.98.79	10.71.98.79
81	10.71.98.80/32	10.71.98.80 – 10.71.98.80	10.71.98.80
82	10.71.98.81/32	10.71.98.81 – 10.71.98.81	10.71.98.81
83	10.71.98.82/32	10.71.98.82 – 10.71.98.82	10.71.98.82
84	10.71.98.83/32	10.71.98.83 – 10.71.98.83	10.71.98.83
85	10.71.98.84/32	10.71.98.84 – 10.71.98.84	10.71.98.84
86	10.71.98.85/32	10.71.98.85 – 10.71.98.85	10.71.98.85
87	10.71.98.86/32	10.71.98.86 – 10.71.98.86	10.71.98.86
88	10.71.98.87/32	10.71.98.87 – 10.71.98.87	10.71.98.87
89	10.71.98.88/32	10.71.98.88 – 10.71.98.88	10.71.98.88
90	10.71.98.89/32	10.71.98.89 – 10.71.98.89	10.71.98.89
91	10.71.98.90/32	10.71.98.90 – 10.71.98.90	10.71.98.90
92	10.71.98.91/32	10.71.98.91 – 10.71.98.91	10.71.98.91
93	10.71.98.92/32	10.71.98.92 – 10.71.98.92	10.71.98.92
94	10.71.98.93/32	10.71.98.93 – 10.71.98.93	10.71.98.93
95	10.71.98.94/32	10.71.98.94 – 10.71.98.94	10.71.98.94
96	10.71.98.95/32	10.71.98.95 – 10.71.98.95	10.71.98.95
97	10.71.98.96/32	10.71.98.96 – 10.71.98.96	10.71.98.96
98	10.71.98.97/32	10.71.98.97 – 10.71.98.97	10.71.98.97
99	10.71.98.98/32	10.71.98.98 – 10.71.98.98	10.71.98.98
100	10.71.98.99/32	10.71.98.99 – 10.71.98.99	10.71.98.99
101	10.71.98.100/32	10.71.98.100 – 10.71.98.100	10.71.98.100
102	10.71.98.101/32	10.71.98.101 – 10.71.98.101	10.71.98.101
103	10.71.98.102/32	10.71.98.102 – 10.71.98.102	10.71.98.102
104	10.71.98.103/32	10.71.98.103 – 10.71.98.103	10.71.98.103
105	10.71.98.104/32	10.71.98.104 – 10.71.98.104	10.71.98.104
106	10.71.98.105/32	10.71.98.105 – 10.71.98.105	10.71.98.105
107	10.71.98.106/32	10.71.98.106 – 10.71.98.106	10.71.98.106
108	10.71.98.107/32	10.71.98.107 – 10.71.98.107	10.71.98.107
109	10.71.98.108/32	10.71.98.108 – 10.71.98.108	10.71.98.108
110	10.71.98.109/32	10.71.98.109 – 10.71.98.109	10.71.98.109
111	10.71.98.110/32	10.71.98.110 – 10.71.98.110	10.71.98.110
112	10.71.98.111/32	10.71.98.111 – 10.71.98.111	10.71.98.111
113	10.71.98.112/32	10.71.98.112 – 10.71.98.112	10.71.98.112
114	10.71.98.113/32	10.71.98.113 – 10.71.98.113	10.71.98.113
115	10.71.98.114/32	10.71.98.114 – 10.71.98.114	10.71.98.114
116	10.71.98.115/32	10.71.98.115 – 10.71.98.115	10.71.98.115
117	10.71.98.116/32	10.71.98.116 – 10.71.98.116	10.71.98.116
118	10.71.98.117/32	10.71.98.117 – 10.71.98.117	10.71.98.117
119	10.71.98.118/32	10.71.98.118 – 10.71.98.118	10.71.98.118
120	10.71.98.119/32	10.71.98.119 – 10.71.98.119	10.71.98.119
121	10.71.98.120/32	10.71.98.120 – 10.71.98.120	10.71.98.120
122	10.71.98.121/32	10.71.98.121 – 10.71.98.121	10.71.98.121
123	10.71.98.122/32	10.71.98.122 – 10.71.98.122	10.71.98.122
124	10.71.98.123/32	10.71.98.123 – 10.71.98.123	10.71.98.123
125	10.71.98.124/32	10.71.98.124 – 10.71.98.124	10.71.98.124
126	10.71.98.125/32	10.71.98.125 – 10.71.98.125	10.71.98.125
127	10.71.98.126/32	10.71.98.126 – 10.71.98.126	10.71.98.126
128	10.71.98.127/32	10.71.98.127 – 10.71.98.127	10.71.98.127
129	10.71.98.128/32	10.71.98.128 – 10.71.98.128	10.71.98.128
130	10.71.98.129/32	10.71.98.129 – 10.71.98.129	10.71.98.129
131	10.71.98.130/32	10.71.98.130 – 10.71.98.130	10.71.98.130
132	10.71.98.131/32	10.71.98.131 – 10.71.98.131	10.71.98.131
133	10.71.98.132/32	10.71.98.132 – 10.71.98.132	10.71.98.132
134	10.71.98.133/32	10.71.98.133 – 10.71.98.133	10.71.98.133
135	10.71.98.134/32	10.71.98.134 – 10.71.98.134	10.71.98.134
136	10.71.98.135/32	10.71.98.135 – 10.71.98.135	10.71.98.135
137	10.71.98.136/32	10.71.98.136 – 10.71.98.136	10.71.98.136
138	10.71.98.137/32	10.71.98.137 – 10.71.98.137	10.71.98.137
139	10.71.98.138/32	10.71.98.138 – 10.71.98.138	10.71.98.138
140	10.71.98.139/32	10.71.98.139 – 10.71.98.139	10.71.98.139
141	10.71.98.140/32	10.71.98.140 – 10.71.98.140	10.71.98.140
142	10.71.98.141/32	10.71.98.141 – 10.71.98.141	10.71.98.141
143	10.71.98.142/32	10.71.98.142 – 10.71.98.142	10.71.98.142
144	10.71.98.143/32	10.71.98.143 – 10.71.98.143	10.71.98.143
145	10.71.98.144/32	10.71.98.144 – 10.71.98.144	10.71.98.144
146	10.71.98.145/32	10.71.98.145 – 10.71.98.145	10.71.98.145
147	10.71.98.146/32	10.71.98.146 – 10.71.98.146	10.71.98.146
148	10.71.98.147/32	10.71.98.147 – 10.71.98.147	10.71.98.147
149	10.71.98.148/32	10.71.98.148 – 10.71.98.148	10.71.98.148
150	10.71.98.149/32	10.71.98.149 – 10.71.98.149	10.71.98.149
151	10.71.98.150/32	10.71.98.150 – 10.71.98.150	10.71.98.150
152	10.71.98.151/32	10.71.98.151 – 10.71.98.151	10.71.98.151
153	10.71.98.152/32	10.71.98.152 – 10.71.98.152	10.71.98.152
154	10.71.98.153/32	10.71.98.153 – 10.71.98.153	10.71.98.153
155	10.71.98.154/32	10.71.98.154 – 10.71.98.154	10.71.98.154
156	10.71.98.155/32	10.71.98.155 – 10.71.98.155	10.71.98.155
157	10.71.98.156/32	10.71.98.156 – 10.71.98.156	10.71.98.156
158	10.71.98.157/32	10.71.98.157 – 10.71.98.157	10.71.98.157
159	10.71.98.158/32	10.71.98.158 – 10.71.98.158	10.71.98.158
160	10.71.98.159/32	10.71.98.159 – 10.71.98.159	10.71.98.159
161	10.71.98.160/32	10.71.98.160 – 10.71.98.160	10.71.98.160
162	10.71.98.161/32	10.71.98.161 – 10.71.98.161	10.71.98.161
163	10.71.98.162/32	10.71.98.162 – 10.71.98.162	10.71.98.162
164	10.71.98.163/32	10.71.98.163 – 10.71.98.163	10.71.98.163
165	10.71.98.164/32	10.71.98.164 – 10.71.98.164	10.71.98.164
166	10.71.98.165/32	10.71.98.165 – 10.71.98.165	10.71.98.165
167	10.71.98.166/32	10.71.98.166 – 10.71.98.166	10.71.98.166
168	10.71.98.167/32	10.71.98.167 – 10.71.98.167	10.71.98.167
169	10.71.98.168/32	10.71.98.168 – 10.71.98.168	10.71.98.168
170	10.71.98.169/32	10.71.98.169 – 10.71.98.169	10.71.98.169
171	10.71.98.170/32	10.71.98.170 – 10.71.98.170	10.71.98.170
172	10.71.98.171/32	10.71.98.171 – 10.71.98.171	10.71.98.171
173	10.71.98.172/32	10.71.98.172 – 10.71.98.172	10.71.98.172
174	10.71.98.173/32	10.71.98.173 – 10.71.98.173	10.71.98.173
175	10.71.98.174/32	10.71.98.174 – 10.71.98.174	10.71.98.174
176	10.71.98.175/32	10.71.98.175 – 10.71.98.175	10.71.98.175
177	10.71.98.176/32	10.71.98.176 – 10.71.98.176	10.71.98.176
178	10.71.98.177/32	10.71.98.177 – 10.71.98.177	10.71.98.177
179	10.71.98.178/32	10.71.98.178 – 10.71.98.178	10.71.98.178
180	10.71.98.179/32	10.71.98.179 – 10.71.98.179	10.71.98.179
181	10.71.98.180/32	10.71.98.180 – 10.71.98.180	10.71.98.180
182	10.71.98.181/32	10.71.98.181 – 10.71.98.181	10.71.98.181
183	10.71.98.182/32	10.71.98.182 – 10.71.98.182	10.71.98.182
184	10.71.98.183/32	10.71.98.183 – 10.71.98.183	10.71.98.183
185	10.71.98.184/32	10.71.98.184 – 10.71.98.184	10.71.98.184
186	10.71.98.185/32	10.71.98.185 – 10.71.98.185	10.71.98.185
187	10.71.98.186/32	10.71.98.186 – 10.71.98.186	10.71.98.186
188	10.71.98.187/32	10.71.98.187 – 10.71.98.187	10.71.98.187
189	10.71.98.188/32	10.71.98.188 – 10.71.98.188	10.71.98.188
190	10.71.98.189/32	10.71.98.189 – 10.71.98.189	10.71.98.189
191	10.71.98.190/32	10.71.98.190 – 10.71.98.190	10.71.98.190
192	10.71.98.191/32	10.71.98.191 – 10.71.98.191	10.71.98.191
193	10.71.98.192/32	10.71.98.192 – 10.71.98.192	10.71.98.192
194	10.71.98.193/32	10.71.98.193 – 10.71.98.193	10.71.98.193
195	10.71.98.194/32	10.71.98.194 – 10.71.98.194	10.71.98.194
196	10.71.98.195/32	10.71.98.195 – 10.71.98.195	10.71.98.195
197	10.71.98.196/32	10.71.98.196 – 10.71.98.196	10.71.98.196
198	10.71.98.197/32	10.71.98.197 – 10.71.98.197	10.71.98.197
199	10.71.98.198/32	10.71.98.198 – 10.71.98.198	10.71.98.198
200	10.71.98.199/32	10.71.98.199 – 10.71.98.199	10.71.98.199
201	10.71.98.200/32	10.71.98.200 – 10.71.98.200	10.71.98.200
202	10.71.98.201/32	10.71.98.201 – 10.71.98.201	10.71.98.201
203	10.71.98.202/32	10.71.98.202 – 10.71.98.202	10.71.98.202
204	10.71.98.203/32	10.71.98.203 – 10.71.98.203	10.71.98.203
205	10.71.98.204/32	10.71.98.204 – 10.71.98.204	10.71.98.204
206	10.71.98.205/32	10.71.98.205 – 10.71.98.205	10.71.98.205
207	10.71.98.206/32	10.71.98.206 – 10.71.98.206	10.71.98.206
208	10.71.98.207/32	10.71.98.207 – 10.71.98.207	10.71.98.207
209	10.71.98.208/32	10.71.98.208 – 10.71.98.208	10.71.98.208
210	10.71.98.209/32	10.71.98.209 – 10.71.98.209	10.71.98.209
211	10.71.98.210/32	10.71.98.210 – 10.71.98.210	10.71.98.210
212	10.71.98.211/32	10.71.98.211 – 10.71.98.211	10.71.98.211
213	10.71.98.212/32	10.71.98.212 – 10.71.98.212	10.71.98.212
214	10.71.98.213/32	10.71.98.213 – 10.71.98.213	10.71.98.213
215	10.71.98.214/32	10.71.98.214 – 10.71.98.214	10.71.98.214
216	10.71.98.215/32	10.71.98.215 – 10.71.98.215	10.71.98.215
217	10.71.98.216/32	10.71.98.216 – 10.71.98.216	10.71.98.216
218	10.71.98.217/32	10.71.98.217 – 10.71.98.217	10.71.98.217
219	10.71.98.218/32	10.71.98.218 – 10.71.98.218	10.71.98.218
220	10.71.98.219/32	10.71.98.219 – 10.71.98.219	10.71.98.219
221	10.71.98.220/32	10.71.98.220 – 10.71.98.220	10.71.98.220
222	10.71.98.221/32	10.71.98.221 – 10.71.98.221	10.71.98.221
223	10.71.98.222/32	10.71.98.222 – 10.71.98.222	10.71.98.222
224	10.71.98.223/32	10.71.98.223 – 10.71.98.223	10.71.98.223
225	10.71.98.224/32	10.71.98.224 – 10.71.98.224	10.71.98.224
226	10.71.98.225/32	10.71.98.225 – 10.71.98.225	10.71.98.225
227	10.71.98.226/32	10.71.98.226 – 10.71.98.226	10.71.98.226
228	10.71.98.227/32	10.71.98.227 – 10.71.98.227	10.71.98.227
229	10.71.98.228/32	10.71.98.228 – 10.71.98.228	10.71.98.228
230	10.71.98.229/32	10.71.98.229 – 10.71.98.229	10.71.98.229
231	10.71.98.230/32	10.71.98.230 – 10.71.98.230	10.71.98.230
232	10.71.98.231/32	10.71.98.231 – 10.71.98.231	10.71.98.231
233	10.71.98.232/32	10.71.98.232 – 10.71.98.232	10.71.98.232
234	10.71.98.233/32	10.71.98.233 – 10.71.98.233	10.71.98.233
235	10.71.98.234/32	10.71.98.234 – 10.71.98.234	10.71.98.234
236	10.71.98.235/32	10.71.98.235 – 10.71.98.235	10.71.98.235
237	10.71.98.236/32	10.71.98.236 – 10.71.98.236	10.71.98.236
238	10.71.98.237/32	10.71.98.237 – 10.71.98.237	10.71.98.237
239	10.71.98.238/32	10.71.98.238 – 10.71.98.238	10.71.98.238
240	10.71.98.239/32	10.71.98.239 – 10.71.98.239	10.71.98.239
241	10.71.98.240/32	10.71.98.240 – 10.71.98.240	10.71.98.240
242	10.71.98.241/32	10.71.98.241 – 10.71.98.241	10.71.98.241
243	10.71.98.242/32	10.71.98.242 – 10.71.98.242	10.71.98.242
244	10.71.98.243/32	10.71.98.243 – 10.71.98.243	10.71.98.243
245	10.71.98.244/32	10.71.98.244 – 10.71.98.244	10.71.98.244
246	10.71.98.245/32	10.71.98.245 – 10.71.98.245	10.71.98.245
247	10.71.98.246/32	10.71.98.246 – 10.71.98.246	10.71.98.246
248	10.71.98.247/32	10.71.98.247 – 10.71.98.247	10.71.98.247
249	10.71.98.248/32	10.71.98.248 – 10.71.98.248	10.71.98.248
250	10.71.98.249/32	10.71.98.249 – 10.71.98.249	10.71.98.249
251	10.71.98.250/32	10.71.98.250 – 10.71.98.250	10.71.98.250
252	10.71.98.251/32	10.71.98.251 – 10.71.98.251	10.71.98.251
253	10.71.98.252/32	10.71.98.252 – 10.71.98.252	10.71.98.252
254	10.71.98.253/32	10.71.98.253 – 10.71.98.253	10.71.98.253
255	10.71.98.254/32	10.71.98.254 – 10.71.98.254	10.71.98.254
256	10.71.98.255/32	10.71.98.255 – 10.71.98.255	10.71.98.255

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 /23
/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	1
/24	255.255.255.0	256	254	2 split →
/25	255.255.255.128	128	126	4 split →
/26	255.255.255.192	64	62	8 split →
/27	255.255.255.224	32	30	16 split →
/28	255.255.255.240	16	14	32 split →
/29	255.255.255.248	8	6	64 split →
/30	255.255.255.252	4	2	128 split →
/31	255.255.255.254	2	2	256 split →
/32	255.255.255.255	1	1	512 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 →