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)10.0.152.0/23

network10.0.152.0/23

broadcast10.0.153.255

first host10.0.152.1

last host10.0.153.254

subnet mask255.255.254.0

wildcard0.0.1.255

addresses512

usable hosts510

classA

ipcalc 10.0.152.0/23

address00001010.00000000.10011000.00000000

subnet mask11111111.11111111.11111110.00000000

network00001010.00000000.10011000.00000000

broadcast00001010.00000000.10011001.11111111

green = network part, grey = host part

hex0x0a009800

decimal167811072

reverse dns0.152.0.10.in-addr.arpa

ipv4-mapped::ffff:a00:9800

/23 split into /32 · 512 subnets

close ×

#	network	host range	broadcast
1	10.0.152.0/32	10.0.152.0 – 10.0.152.0	10.0.152.0
2	10.0.152.1/32	10.0.152.1 – 10.0.152.1	10.0.152.1
3	10.0.152.2/32	10.0.152.2 – 10.0.152.2	10.0.152.2
4	10.0.152.3/32	10.0.152.3 – 10.0.152.3	10.0.152.3
5	10.0.152.4/32	10.0.152.4 – 10.0.152.4	10.0.152.4
6	10.0.152.5/32	10.0.152.5 – 10.0.152.5	10.0.152.5
7	10.0.152.6/32	10.0.152.6 – 10.0.152.6	10.0.152.6
8	10.0.152.7/32	10.0.152.7 – 10.0.152.7	10.0.152.7
9	10.0.152.8/32	10.0.152.8 – 10.0.152.8	10.0.152.8
10	10.0.152.9/32	10.0.152.9 – 10.0.152.9	10.0.152.9
11	10.0.152.10/32	10.0.152.10 – 10.0.152.10	10.0.152.10
12	10.0.152.11/32	10.0.152.11 – 10.0.152.11	10.0.152.11
13	10.0.152.12/32	10.0.152.12 – 10.0.152.12	10.0.152.12
14	10.0.152.13/32	10.0.152.13 – 10.0.152.13	10.0.152.13
15	10.0.152.14/32	10.0.152.14 – 10.0.152.14	10.0.152.14
16	10.0.152.15/32	10.0.152.15 – 10.0.152.15	10.0.152.15
17	10.0.152.16/32	10.0.152.16 – 10.0.152.16	10.0.152.16
18	10.0.152.17/32	10.0.152.17 – 10.0.152.17	10.0.152.17
19	10.0.152.18/32	10.0.152.18 – 10.0.152.18	10.0.152.18
20	10.0.152.19/32	10.0.152.19 – 10.0.152.19	10.0.152.19
21	10.0.152.20/32	10.0.152.20 – 10.0.152.20	10.0.152.20
22	10.0.152.21/32	10.0.152.21 – 10.0.152.21	10.0.152.21
23	10.0.152.22/32	10.0.152.22 – 10.0.152.22	10.0.152.22
24	10.0.152.23/32	10.0.152.23 – 10.0.152.23	10.0.152.23
25	10.0.152.24/32	10.0.152.24 – 10.0.152.24	10.0.152.24
26	10.0.152.25/32	10.0.152.25 – 10.0.152.25	10.0.152.25
27	10.0.152.26/32	10.0.152.26 – 10.0.152.26	10.0.152.26
28	10.0.152.27/32	10.0.152.27 – 10.0.152.27	10.0.152.27
29	10.0.152.28/32	10.0.152.28 – 10.0.152.28	10.0.152.28
30	10.0.152.29/32	10.0.152.29 – 10.0.152.29	10.0.152.29
31	10.0.152.30/32	10.0.152.30 – 10.0.152.30	10.0.152.30
32	10.0.152.31/32	10.0.152.31 – 10.0.152.31	10.0.152.31
33	10.0.152.32/32	10.0.152.32 – 10.0.152.32	10.0.152.32
34	10.0.152.33/32	10.0.152.33 – 10.0.152.33	10.0.152.33
35	10.0.152.34/32	10.0.152.34 – 10.0.152.34	10.0.152.34
36	10.0.152.35/32	10.0.152.35 – 10.0.152.35	10.0.152.35
37	10.0.152.36/32	10.0.152.36 – 10.0.152.36	10.0.152.36
38	10.0.152.37/32	10.0.152.37 – 10.0.152.37	10.0.152.37
39	10.0.152.38/32	10.0.152.38 – 10.0.152.38	10.0.152.38
40	10.0.152.39/32	10.0.152.39 – 10.0.152.39	10.0.152.39
41	10.0.152.40/32	10.0.152.40 – 10.0.152.40	10.0.152.40
42	10.0.152.41/32	10.0.152.41 – 10.0.152.41	10.0.152.41
43	10.0.152.42/32	10.0.152.42 – 10.0.152.42	10.0.152.42
44	10.0.152.43/32	10.0.152.43 – 10.0.152.43	10.0.152.43
45	10.0.152.44/32	10.0.152.44 – 10.0.152.44	10.0.152.44
46	10.0.152.45/32	10.0.152.45 – 10.0.152.45	10.0.152.45
47	10.0.152.46/32	10.0.152.46 – 10.0.152.46	10.0.152.46
48	10.0.152.47/32	10.0.152.47 – 10.0.152.47	10.0.152.47
49	10.0.152.48/32	10.0.152.48 – 10.0.152.48	10.0.152.48
50	10.0.152.49/32	10.0.152.49 – 10.0.152.49	10.0.152.49
51	10.0.152.50/32	10.0.152.50 – 10.0.152.50	10.0.152.50
52	10.0.152.51/32	10.0.152.51 – 10.0.152.51	10.0.152.51
53	10.0.152.52/32	10.0.152.52 – 10.0.152.52	10.0.152.52
54	10.0.152.53/32	10.0.152.53 – 10.0.152.53	10.0.152.53
55	10.0.152.54/32	10.0.152.54 – 10.0.152.54	10.0.152.54
56	10.0.152.55/32	10.0.152.55 – 10.0.152.55	10.0.152.55
57	10.0.152.56/32	10.0.152.56 – 10.0.152.56	10.0.152.56
58	10.0.152.57/32	10.0.152.57 – 10.0.152.57	10.0.152.57
59	10.0.152.58/32	10.0.152.58 – 10.0.152.58	10.0.152.58
60	10.0.152.59/32	10.0.152.59 – 10.0.152.59	10.0.152.59
61	10.0.152.60/32	10.0.152.60 – 10.0.152.60	10.0.152.60
62	10.0.152.61/32	10.0.152.61 – 10.0.152.61	10.0.152.61
63	10.0.152.62/32	10.0.152.62 – 10.0.152.62	10.0.152.62
64	10.0.152.63/32	10.0.152.63 – 10.0.152.63	10.0.152.63
65	10.0.152.64/32	10.0.152.64 – 10.0.152.64	10.0.152.64
66	10.0.152.65/32	10.0.152.65 – 10.0.152.65	10.0.152.65
67	10.0.152.66/32	10.0.152.66 – 10.0.152.66	10.0.152.66
68	10.0.152.67/32	10.0.152.67 – 10.0.152.67	10.0.152.67
69	10.0.152.68/32	10.0.152.68 – 10.0.152.68	10.0.152.68
70	10.0.152.69/32	10.0.152.69 – 10.0.152.69	10.0.152.69
71	10.0.152.70/32	10.0.152.70 – 10.0.152.70	10.0.152.70
72	10.0.152.71/32	10.0.152.71 – 10.0.152.71	10.0.152.71
73	10.0.152.72/32	10.0.152.72 – 10.0.152.72	10.0.152.72
74	10.0.152.73/32	10.0.152.73 – 10.0.152.73	10.0.152.73
75	10.0.152.74/32	10.0.152.74 – 10.0.152.74	10.0.152.74
76	10.0.152.75/32	10.0.152.75 – 10.0.152.75	10.0.152.75
77	10.0.152.76/32	10.0.152.76 – 10.0.152.76	10.0.152.76
78	10.0.152.77/32	10.0.152.77 – 10.0.152.77	10.0.152.77
79	10.0.152.78/32	10.0.152.78 – 10.0.152.78	10.0.152.78
80	10.0.152.79/32	10.0.152.79 – 10.0.152.79	10.0.152.79
81	10.0.152.80/32	10.0.152.80 – 10.0.152.80	10.0.152.80
82	10.0.152.81/32	10.0.152.81 – 10.0.152.81	10.0.152.81
83	10.0.152.82/32	10.0.152.82 – 10.0.152.82	10.0.152.82
84	10.0.152.83/32	10.0.152.83 – 10.0.152.83	10.0.152.83
85	10.0.152.84/32	10.0.152.84 – 10.0.152.84	10.0.152.84
86	10.0.152.85/32	10.0.152.85 – 10.0.152.85	10.0.152.85
87	10.0.152.86/32	10.0.152.86 – 10.0.152.86	10.0.152.86
88	10.0.152.87/32	10.0.152.87 – 10.0.152.87	10.0.152.87
89	10.0.152.88/32	10.0.152.88 – 10.0.152.88	10.0.152.88
90	10.0.152.89/32	10.0.152.89 – 10.0.152.89	10.0.152.89
91	10.0.152.90/32	10.0.152.90 – 10.0.152.90	10.0.152.90
92	10.0.152.91/32	10.0.152.91 – 10.0.152.91	10.0.152.91
93	10.0.152.92/32	10.0.152.92 – 10.0.152.92	10.0.152.92
94	10.0.152.93/32	10.0.152.93 – 10.0.152.93	10.0.152.93
95	10.0.152.94/32	10.0.152.94 – 10.0.152.94	10.0.152.94
96	10.0.152.95/32	10.0.152.95 – 10.0.152.95	10.0.152.95
97	10.0.152.96/32	10.0.152.96 – 10.0.152.96	10.0.152.96
98	10.0.152.97/32	10.0.152.97 – 10.0.152.97	10.0.152.97
99	10.0.152.98/32	10.0.152.98 – 10.0.152.98	10.0.152.98
100	10.0.152.99/32	10.0.152.99 – 10.0.152.99	10.0.152.99
101	10.0.152.100/32	10.0.152.100 – 10.0.152.100	10.0.152.100
102	10.0.152.101/32	10.0.152.101 – 10.0.152.101	10.0.152.101
103	10.0.152.102/32	10.0.152.102 – 10.0.152.102	10.0.152.102
104	10.0.152.103/32	10.0.152.103 – 10.0.152.103	10.0.152.103
105	10.0.152.104/32	10.0.152.104 – 10.0.152.104	10.0.152.104
106	10.0.152.105/32	10.0.152.105 – 10.0.152.105	10.0.152.105
107	10.0.152.106/32	10.0.152.106 – 10.0.152.106	10.0.152.106
108	10.0.152.107/32	10.0.152.107 – 10.0.152.107	10.0.152.107
109	10.0.152.108/32	10.0.152.108 – 10.0.152.108	10.0.152.108
110	10.0.152.109/32	10.0.152.109 – 10.0.152.109	10.0.152.109
111	10.0.152.110/32	10.0.152.110 – 10.0.152.110	10.0.152.110
112	10.0.152.111/32	10.0.152.111 – 10.0.152.111	10.0.152.111
113	10.0.152.112/32	10.0.152.112 – 10.0.152.112	10.0.152.112
114	10.0.152.113/32	10.0.152.113 – 10.0.152.113	10.0.152.113
115	10.0.152.114/32	10.0.152.114 – 10.0.152.114	10.0.152.114
116	10.0.152.115/32	10.0.152.115 – 10.0.152.115	10.0.152.115
117	10.0.152.116/32	10.0.152.116 – 10.0.152.116	10.0.152.116
118	10.0.152.117/32	10.0.152.117 – 10.0.152.117	10.0.152.117
119	10.0.152.118/32	10.0.152.118 – 10.0.152.118	10.0.152.118
120	10.0.152.119/32	10.0.152.119 – 10.0.152.119	10.0.152.119
121	10.0.152.120/32	10.0.152.120 – 10.0.152.120	10.0.152.120
122	10.0.152.121/32	10.0.152.121 – 10.0.152.121	10.0.152.121
123	10.0.152.122/32	10.0.152.122 – 10.0.152.122	10.0.152.122
124	10.0.152.123/32	10.0.152.123 – 10.0.152.123	10.0.152.123
125	10.0.152.124/32	10.0.152.124 – 10.0.152.124	10.0.152.124
126	10.0.152.125/32	10.0.152.125 – 10.0.152.125	10.0.152.125
127	10.0.152.126/32	10.0.152.126 – 10.0.152.126	10.0.152.126
128	10.0.152.127/32	10.0.152.127 – 10.0.152.127	10.0.152.127
129	10.0.152.128/32	10.0.152.128 – 10.0.152.128	10.0.152.128
130	10.0.152.129/32	10.0.152.129 – 10.0.152.129	10.0.152.129
131	10.0.152.130/32	10.0.152.130 – 10.0.152.130	10.0.152.130
132	10.0.152.131/32	10.0.152.131 – 10.0.152.131	10.0.152.131
133	10.0.152.132/32	10.0.152.132 – 10.0.152.132	10.0.152.132
134	10.0.152.133/32	10.0.152.133 – 10.0.152.133	10.0.152.133
135	10.0.152.134/32	10.0.152.134 – 10.0.152.134	10.0.152.134
136	10.0.152.135/32	10.0.152.135 – 10.0.152.135	10.0.152.135
137	10.0.152.136/32	10.0.152.136 – 10.0.152.136	10.0.152.136
138	10.0.152.137/32	10.0.152.137 – 10.0.152.137	10.0.152.137
139	10.0.152.138/32	10.0.152.138 – 10.0.152.138	10.0.152.138
140	10.0.152.139/32	10.0.152.139 – 10.0.152.139	10.0.152.139
141	10.0.152.140/32	10.0.152.140 – 10.0.152.140	10.0.152.140
142	10.0.152.141/32	10.0.152.141 – 10.0.152.141	10.0.152.141
143	10.0.152.142/32	10.0.152.142 – 10.0.152.142	10.0.152.142
144	10.0.152.143/32	10.0.152.143 – 10.0.152.143	10.0.152.143
145	10.0.152.144/32	10.0.152.144 – 10.0.152.144	10.0.152.144
146	10.0.152.145/32	10.0.152.145 – 10.0.152.145	10.0.152.145
147	10.0.152.146/32	10.0.152.146 – 10.0.152.146	10.0.152.146
148	10.0.152.147/32	10.0.152.147 – 10.0.152.147	10.0.152.147
149	10.0.152.148/32	10.0.152.148 – 10.0.152.148	10.0.152.148
150	10.0.152.149/32	10.0.152.149 – 10.0.152.149	10.0.152.149
151	10.0.152.150/32	10.0.152.150 – 10.0.152.150	10.0.152.150
152	10.0.152.151/32	10.0.152.151 – 10.0.152.151	10.0.152.151
153	10.0.152.152/32	10.0.152.152 – 10.0.152.152	10.0.152.152
154	10.0.152.153/32	10.0.152.153 – 10.0.152.153	10.0.152.153
155	10.0.152.154/32	10.0.152.154 – 10.0.152.154	10.0.152.154
156	10.0.152.155/32	10.0.152.155 – 10.0.152.155	10.0.152.155
157	10.0.152.156/32	10.0.152.156 – 10.0.152.156	10.0.152.156
158	10.0.152.157/32	10.0.152.157 – 10.0.152.157	10.0.152.157
159	10.0.152.158/32	10.0.152.158 – 10.0.152.158	10.0.152.158
160	10.0.152.159/32	10.0.152.159 – 10.0.152.159	10.0.152.159
161	10.0.152.160/32	10.0.152.160 – 10.0.152.160	10.0.152.160
162	10.0.152.161/32	10.0.152.161 – 10.0.152.161	10.0.152.161
163	10.0.152.162/32	10.0.152.162 – 10.0.152.162	10.0.152.162
164	10.0.152.163/32	10.0.152.163 – 10.0.152.163	10.0.152.163
165	10.0.152.164/32	10.0.152.164 – 10.0.152.164	10.0.152.164
166	10.0.152.165/32	10.0.152.165 – 10.0.152.165	10.0.152.165
167	10.0.152.166/32	10.0.152.166 – 10.0.152.166	10.0.152.166
168	10.0.152.167/32	10.0.152.167 – 10.0.152.167	10.0.152.167
169	10.0.152.168/32	10.0.152.168 – 10.0.152.168	10.0.152.168
170	10.0.152.169/32	10.0.152.169 – 10.0.152.169	10.0.152.169
171	10.0.152.170/32	10.0.152.170 – 10.0.152.170	10.0.152.170
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210	10.0.152.209/32	10.0.152.209 – 10.0.152.209	10.0.152.209
211	10.0.152.210/32	10.0.152.210 – 10.0.152.210	10.0.152.210
212	10.0.152.211/32	10.0.152.211 – 10.0.152.211	10.0.152.211
213	10.0.152.212/32	10.0.152.212 – 10.0.152.212	10.0.152.212
214	10.0.152.213/32	10.0.152.213 – 10.0.152.213	10.0.152.213
215	10.0.152.214/32	10.0.152.214 – 10.0.152.214	10.0.152.214
216	10.0.152.215/32	10.0.152.215 – 10.0.152.215	10.0.152.215
217	10.0.152.216/32	10.0.152.216 – 10.0.152.216	10.0.152.216
218	10.0.152.217/32	10.0.152.217 – 10.0.152.217	10.0.152.217
219	10.0.152.218/32	10.0.152.218 – 10.0.152.218	10.0.152.218
220	10.0.152.219/32	10.0.152.219 – 10.0.152.219	10.0.152.219
221	10.0.152.220/32	10.0.152.220 – 10.0.152.220	10.0.152.220
222	10.0.152.221/32	10.0.152.221 – 10.0.152.221	10.0.152.221
223	10.0.152.222/32	10.0.152.222 – 10.0.152.222	10.0.152.222
224	10.0.152.223/32	10.0.152.223 – 10.0.152.223	10.0.152.223
225	10.0.152.224/32	10.0.152.224 – 10.0.152.224	10.0.152.224
226	10.0.152.225/32	10.0.152.225 – 10.0.152.225	10.0.152.225
227	10.0.152.226/32	10.0.152.226 – 10.0.152.226	10.0.152.226
228	10.0.152.227/32	10.0.152.227 – 10.0.152.227	10.0.152.227
229	10.0.152.228/32	10.0.152.228 – 10.0.152.228	10.0.152.228
230	10.0.152.229/32	10.0.152.229 – 10.0.152.229	10.0.152.229
231	10.0.152.230/32	10.0.152.230 – 10.0.152.230	10.0.152.230
232	10.0.152.231/32	10.0.152.231 – 10.0.152.231	10.0.152.231
233	10.0.152.232/32	10.0.152.232 – 10.0.152.232	10.0.152.232
234	10.0.152.233/32	10.0.152.233 – 10.0.152.233	10.0.152.233
235	10.0.152.234/32	10.0.152.234 – 10.0.152.234	10.0.152.234
236	10.0.152.235/32	10.0.152.235 – 10.0.152.235	10.0.152.235
237	10.0.152.236/32	10.0.152.236 – 10.0.152.236	10.0.152.236
238	10.0.152.237/32	10.0.152.237 – 10.0.152.237	10.0.152.237
239	10.0.152.238/32	10.0.152.238 – 10.0.152.238	10.0.152.238
240	10.0.152.239/32	10.0.152.239 – 10.0.152.239	10.0.152.239
241	10.0.152.240/32	10.0.152.240 – 10.0.152.240	10.0.152.240
242	10.0.152.241/32	10.0.152.241 – 10.0.152.241	10.0.152.241
243	10.0.152.242/32	10.0.152.242 – 10.0.152.242	10.0.152.242
244	10.0.152.243/32	10.0.152.243 – 10.0.152.243	10.0.152.243
245	10.0.152.244/32	10.0.152.244 – 10.0.152.244	10.0.152.244
246	10.0.152.245/32	10.0.152.245 – 10.0.152.245	10.0.152.245
247	10.0.152.246/32	10.0.152.246 – 10.0.152.246	10.0.152.246
248	10.0.152.247/32	10.0.152.247 – 10.0.152.247	10.0.152.247
249	10.0.152.248/32	10.0.152.248 – 10.0.152.248	10.0.152.248
250	10.0.152.249/32	10.0.152.249 – 10.0.152.249	10.0.152.249
251	10.0.152.250/32	10.0.152.250 – 10.0.152.250	10.0.152.250
252	10.0.152.251/32	10.0.152.251 – 10.0.152.251	10.0.152.251
253	10.0.152.252/32	10.0.152.252 – 10.0.152.252	10.0.152.252
254	10.0.152.253/32	10.0.152.253 – 10.0.152.253	10.0.152.253
255	10.0.152.254/32	10.0.152.254 – 10.0.152.254	10.0.152.254
256	10.0.152.255/32	10.0.152.255 – 10.0.152.255	10.0.152.255

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 →