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)10.2.153.0/24

network10.2.153.0/24

broadcast10.2.153.255

first host10.2.153.1

last host10.2.153.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.2.153.0/24

address00001010.00000010.10011001.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.00000010.10011001.00000000

broadcast00001010.00000010.10011001.11111111

green = network part, grey = host part

hex0x0a029900

decimal167942400

reverse dns0.153.2.10.in-addr.arpa

ipv4-mapped::ffff:a02:9900

/24 split into /32 · 256 subnets

close ×

#	network	host range	broadcast
1	10.2.153.0/32	10.2.153.0 – 10.2.153.0	10.2.153.0
2	10.2.153.1/32	10.2.153.1 – 10.2.153.1	10.2.153.1
3	10.2.153.2/32	10.2.153.2 – 10.2.153.2	10.2.153.2
4	10.2.153.3/32	10.2.153.3 – 10.2.153.3	10.2.153.3
5	10.2.153.4/32	10.2.153.4 – 10.2.153.4	10.2.153.4
6	10.2.153.5/32	10.2.153.5 – 10.2.153.5	10.2.153.5
7	10.2.153.6/32	10.2.153.6 – 10.2.153.6	10.2.153.6
8	10.2.153.7/32	10.2.153.7 – 10.2.153.7	10.2.153.7
9	10.2.153.8/32	10.2.153.8 – 10.2.153.8	10.2.153.8
10	10.2.153.9/32	10.2.153.9 – 10.2.153.9	10.2.153.9
11	10.2.153.10/32	10.2.153.10 – 10.2.153.10	10.2.153.10
12	10.2.153.11/32	10.2.153.11 – 10.2.153.11	10.2.153.11
13	10.2.153.12/32	10.2.153.12 – 10.2.153.12	10.2.153.12
14	10.2.153.13/32	10.2.153.13 – 10.2.153.13	10.2.153.13
15	10.2.153.14/32	10.2.153.14 – 10.2.153.14	10.2.153.14
16	10.2.153.15/32	10.2.153.15 – 10.2.153.15	10.2.153.15
17	10.2.153.16/32	10.2.153.16 – 10.2.153.16	10.2.153.16
18	10.2.153.17/32	10.2.153.17 – 10.2.153.17	10.2.153.17
19	10.2.153.18/32	10.2.153.18 – 10.2.153.18	10.2.153.18
20	10.2.153.19/32	10.2.153.19 – 10.2.153.19	10.2.153.19
21	10.2.153.20/32	10.2.153.20 – 10.2.153.20	10.2.153.20
22	10.2.153.21/32	10.2.153.21 – 10.2.153.21	10.2.153.21
23	10.2.153.22/32	10.2.153.22 – 10.2.153.22	10.2.153.22
24	10.2.153.23/32	10.2.153.23 – 10.2.153.23	10.2.153.23
25	10.2.153.24/32	10.2.153.24 – 10.2.153.24	10.2.153.24
26	10.2.153.25/32	10.2.153.25 – 10.2.153.25	10.2.153.25
27	10.2.153.26/32	10.2.153.26 – 10.2.153.26	10.2.153.26
28	10.2.153.27/32	10.2.153.27 – 10.2.153.27	10.2.153.27
29	10.2.153.28/32	10.2.153.28 – 10.2.153.28	10.2.153.28
30	10.2.153.29/32	10.2.153.29 – 10.2.153.29	10.2.153.29
31	10.2.153.30/32	10.2.153.30 – 10.2.153.30	10.2.153.30
32	10.2.153.31/32	10.2.153.31 – 10.2.153.31	10.2.153.31
33	10.2.153.32/32	10.2.153.32 – 10.2.153.32	10.2.153.32
34	10.2.153.33/32	10.2.153.33 – 10.2.153.33	10.2.153.33
35	10.2.153.34/32	10.2.153.34 – 10.2.153.34	10.2.153.34
36	10.2.153.35/32	10.2.153.35 – 10.2.153.35	10.2.153.35
37	10.2.153.36/32	10.2.153.36 – 10.2.153.36	10.2.153.36
38	10.2.153.37/32	10.2.153.37 – 10.2.153.37	10.2.153.37
39	10.2.153.38/32	10.2.153.38 – 10.2.153.38	10.2.153.38
40	10.2.153.39/32	10.2.153.39 – 10.2.153.39	10.2.153.39
41	10.2.153.40/32	10.2.153.40 – 10.2.153.40	10.2.153.40
42	10.2.153.41/32	10.2.153.41 – 10.2.153.41	10.2.153.41
43	10.2.153.42/32	10.2.153.42 – 10.2.153.42	10.2.153.42
44	10.2.153.43/32	10.2.153.43 – 10.2.153.43	10.2.153.43
45	10.2.153.44/32	10.2.153.44 – 10.2.153.44	10.2.153.44
46	10.2.153.45/32	10.2.153.45 – 10.2.153.45	10.2.153.45
47	10.2.153.46/32	10.2.153.46 – 10.2.153.46	10.2.153.46
48	10.2.153.47/32	10.2.153.47 – 10.2.153.47	10.2.153.47
49	10.2.153.48/32	10.2.153.48 – 10.2.153.48	10.2.153.48
50	10.2.153.49/32	10.2.153.49 – 10.2.153.49	10.2.153.49
51	10.2.153.50/32	10.2.153.50 – 10.2.153.50	10.2.153.50
52	10.2.153.51/32	10.2.153.51 – 10.2.153.51	10.2.153.51
53	10.2.153.52/32	10.2.153.52 – 10.2.153.52	10.2.153.52
54	10.2.153.53/32	10.2.153.53 – 10.2.153.53	10.2.153.53
55	10.2.153.54/32	10.2.153.54 – 10.2.153.54	10.2.153.54
56	10.2.153.55/32	10.2.153.55 – 10.2.153.55	10.2.153.55
57	10.2.153.56/32	10.2.153.56 – 10.2.153.56	10.2.153.56
58	10.2.153.57/32	10.2.153.57 – 10.2.153.57	10.2.153.57
59	10.2.153.58/32	10.2.153.58 – 10.2.153.58	10.2.153.58
60	10.2.153.59/32	10.2.153.59 – 10.2.153.59	10.2.153.59
61	10.2.153.60/32	10.2.153.60 – 10.2.153.60	10.2.153.60
62	10.2.153.61/32	10.2.153.61 – 10.2.153.61	10.2.153.61
63	10.2.153.62/32	10.2.153.62 – 10.2.153.62	10.2.153.62
64	10.2.153.63/32	10.2.153.63 – 10.2.153.63	10.2.153.63
65	10.2.153.64/32	10.2.153.64 – 10.2.153.64	10.2.153.64
66	10.2.153.65/32	10.2.153.65 – 10.2.153.65	10.2.153.65
67	10.2.153.66/32	10.2.153.66 – 10.2.153.66	10.2.153.66
68	10.2.153.67/32	10.2.153.67 – 10.2.153.67	10.2.153.67
69	10.2.153.68/32	10.2.153.68 – 10.2.153.68	10.2.153.68
70	10.2.153.69/32	10.2.153.69 – 10.2.153.69	10.2.153.69
71	10.2.153.70/32	10.2.153.70 – 10.2.153.70	10.2.153.70
72	10.2.153.71/32	10.2.153.71 – 10.2.153.71	10.2.153.71
73	10.2.153.72/32	10.2.153.72 – 10.2.153.72	10.2.153.72
74	10.2.153.73/32	10.2.153.73 – 10.2.153.73	10.2.153.73
75	10.2.153.74/32	10.2.153.74 – 10.2.153.74	10.2.153.74
76	10.2.153.75/32	10.2.153.75 – 10.2.153.75	10.2.153.75
77	10.2.153.76/32	10.2.153.76 – 10.2.153.76	10.2.153.76
78	10.2.153.77/32	10.2.153.77 – 10.2.153.77	10.2.153.77
79	10.2.153.78/32	10.2.153.78 – 10.2.153.78	10.2.153.78
80	10.2.153.79/32	10.2.153.79 – 10.2.153.79	10.2.153.79
81	10.2.153.80/32	10.2.153.80 – 10.2.153.80	10.2.153.80
82	10.2.153.81/32	10.2.153.81 – 10.2.153.81	10.2.153.81
83	10.2.153.82/32	10.2.153.82 – 10.2.153.82	10.2.153.82
84	10.2.153.83/32	10.2.153.83 – 10.2.153.83	10.2.153.83
85	10.2.153.84/32	10.2.153.84 – 10.2.153.84	10.2.153.84
86	10.2.153.85/32	10.2.153.85 – 10.2.153.85	10.2.153.85
87	10.2.153.86/32	10.2.153.86 – 10.2.153.86	10.2.153.86
88	10.2.153.87/32	10.2.153.87 – 10.2.153.87	10.2.153.87
89	10.2.153.88/32	10.2.153.88 – 10.2.153.88	10.2.153.88
90	10.2.153.89/32	10.2.153.89 – 10.2.153.89	10.2.153.89
91	10.2.153.90/32	10.2.153.90 – 10.2.153.90	10.2.153.90
92	10.2.153.91/32	10.2.153.91 – 10.2.153.91	10.2.153.91
93	10.2.153.92/32	10.2.153.92 – 10.2.153.92	10.2.153.92
94	10.2.153.93/32	10.2.153.93 – 10.2.153.93	10.2.153.93
95	10.2.153.94/32	10.2.153.94 – 10.2.153.94	10.2.153.94
96	10.2.153.95/32	10.2.153.95 – 10.2.153.95	10.2.153.95
97	10.2.153.96/32	10.2.153.96 – 10.2.153.96	10.2.153.96
98	10.2.153.97/32	10.2.153.97 – 10.2.153.97	10.2.153.97
99	10.2.153.98/32	10.2.153.98 – 10.2.153.98	10.2.153.98
100	10.2.153.99/32	10.2.153.99 – 10.2.153.99	10.2.153.99
101	10.2.153.100/32	10.2.153.100 – 10.2.153.100	10.2.153.100
102	10.2.153.101/32	10.2.153.101 – 10.2.153.101	10.2.153.101
103	10.2.153.102/32	10.2.153.102 – 10.2.153.102	10.2.153.102
104	10.2.153.103/32	10.2.153.103 – 10.2.153.103	10.2.153.103
105	10.2.153.104/32	10.2.153.104 – 10.2.153.104	10.2.153.104
106	10.2.153.105/32	10.2.153.105 – 10.2.153.105	10.2.153.105
107	10.2.153.106/32	10.2.153.106 – 10.2.153.106	10.2.153.106
108	10.2.153.107/32	10.2.153.107 – 10.2.153.107	10.2.153.107
109	10.2.153.108/32	10.2.153.108 – 10.2.153.108	10.2.153.108
110	10.2.153.109/32	10.2.153.109 – 10.2.153.109	10.2.153.109
111	10.2.153.110/32	10.2.153.110 – 10.2.153.110	10.2.153.110
112	10.2.153.111/32	10.2.153.111 – 10.2.153.111	10.2.153.111
113	10.2.153.112/32	10.2.153.112 – 10.2.153.112	10.2.153.112
114	10.2.153.113/32	10.2.153.113 – 10.2.153.113	10.2.153.113
115	10.2.153.114/32	10.2.153.114 – 10.2.153.114	10.2.153.114
116	10.2.153.115/32	10.2.153.115 – 10.2.153.115	10.2.153.115
117	10.2.153.116/32	10.2.153.116 – 10.2.153.116	10.2.153.116
118	10.2.153.117/32	10.2.153.117 – 10.2.153.117	10.2.153.117
119	10.2.153.118/32	10.2.153.118 – 10.2.153.118	10.2.153.118
120	10.2.153.119/32	10.2.153.119 – 10.2.153.119	10.2.153.119
121	10.2.153.120/32	10.2.153.120 – 10.2.153.120	10.2.153.120
122	10.2.153.121/32	10.2.153.121 – 10.2.153.121	10.2.153.121
123	10.2.153.122/32	10.2.153.122 – 10.2.153.122	10.2.153.122
124	10.2.153.123/32	10.2.153.123 – 10.2.153.123	10.2.153.123
125	10.2.153.124/32	10.2.153.124 – 10.2.153.124	10.2.153.124
126	10.2.153.125/32	10.2.153.125 – 10.2.153.125	10.2.153.125
127	10.2.153.126/32	10.2.153.126 – 10.2.153.126	10.2.153.126
128	10.2.153.127/32	10.2.153.127 – 10.2.153.127	10.2.153.127
129	10.2.153.128/32	10.2.153.128 – 10.2.153.128	10.2.153.128
130	10.2.153.129/32	10.2.153.129 – 10.2.153.129	10.2.153.129
131	10.2.153.130/32	10.2.153.130 – 10.2.153.130	10.2.153.130
132	10.2.153.131/32	10.2.153.131 – 10.2.153.131	10.2.153.131
133	10.2.153.132/32	10.2.153.132 – 10.2.153.132	10.2.153.132
134	10.2.153.133/32	10.2.153.133 – 10.2.153.133	10.2.153.133
135	10.2.153.134/32	10.2.153.134 – 10.2.153.134	10.2.153.134
136	10.2.153.135/32	10.2.153.135 – 10.2.153.135	10.2.153.135
137	10.2.153.136/32	10.2.153.136 – 10.2.153.136	10.2.153.136
138	10.2.153.137/32	10.2.153.137 – 10.2.153.137	10.2.153.137
139	10.2.153.138/32	10.2.153.138 – 10.2.153.138	10.2.153.138
140	10.2.153.139/32	10.2.153.139 – 10.2.153.139	10.2.153.139
141	10.2.153.140/32	10.2.153.140 – 10.2.153.140	10.2.153.140
142	10.2.153.141/32	10.2.153.141 – 10.2.153.141	10.2.153.141
143	10.2.153.142/32	10.2.153.142 – 10.2.153.142	10.2.153.142
144	10.2.153.143/32	10.2.153.143 – 10.2.153.143	10.2.153.143
145	10.2.153.144/32	10.2.153.144 – 10.2.153.144	10.2.153.144
146	10.2.153.145/32	10.2.153.145 – 10.2.153.145	10.2.153.145
147	10.2.153.146/32	10.2.153.146 – 10.2.153.146	10.2.153.146
148	10.2.153.147/32	10.2.153.147 – 10.2.153.147	10.2.153.147
149	10.2.153.148/32	10.2.153.148 – 10.2.153.148	10.2.153.148
150	10.2.153.149/32	10.2.153.149 – 10.2.153.149	10.2.153.149
151	10.2.153.150/32	10.2.153.150 – 10.2.153.150	10.2.153.150
152	10.2.153.151/32	10.2.153.151 – 10.2.153.151	10.2.153.151
153	10.2.153.152/32	10.2.153.152 – 10.2.153.152	10.2.153.152
154	10.2.153.153/32	10.2.153.153 – 10.2.153.153	10.2.153.153
155	10.2.153.154/32	10.2.153.154 – 10.2.153.154	10.2.153.154
156	10.2.153.155/32	10.2.153.155 – 10.2.153.155	10.2.153.155
157	10.2.153.156/32	10.2.153.156 – 10.2.153.156	10.2.153.156
158	10.2.153.157/32	10.2.153.157 – 10.2.153.157	10.2.153.157
159	10.2.153.158/32	10.2.153.158 – 10.2.153.158	10.2.153.158
160	10.2.153.159/32	10.2.153.159 – 10.2.153.159	10.2.153.159
161	10.2.153.160/32	10.2.153.160 – 10.2.153.160	10.2.153.160
162	10.2.153.161/32	10.2.153.161 – 10.2.153.161	10.2.153.161
163	10.2.153.162/32	10.2.153.162 – 10.2.153.162	10.2.153.162
164	10.2.153.163/32	10.2.153.163 – 10.2.153.163	10.2.153.163
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167	10.2.153.166/32	10.2.153.166 – 10.2.153.166	10.2.153.166
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210	10.2.153.209/32	10.2.153.209 – 10.2.153.209	10.2.153.209
211	10.2.153.210/32	10.2.153.210 – 10.2.153.210	10.2.153.210
212	10.2.153.211/32	10.2.153.211 – 10.2.153.211	10.2.153.211
213	10.2.153.212/32	10.2.153.212 – 10.2.153.212	10.2.153.212
214	10.2.153.213/32	10.2.153.213 – 10.2.153.213	10.2.153.213
215	10.2.153.214/32	10.2.153.214 – 10.2.153.214	10.2.153.214
216	10.2.153.215/32	10.2.153.215 – 10.2.153.215	10.2.153.215
217	10.2.153.216/32	10.2.153.216 – 10.2.153.216	10.2.153.216
218	10.2.153.217/32	10.2.153.217 – 10.2.153.217	10.2.153.217
219	10.2.153.218/32	10.2.153.218 – 10.2.153.218	10.2.153.218
220	10.2.153.219/32	10.2.153.219 – 10.2.153.219	10.2.153.219
221	10.2.153.220/32	10.2.153.220 – 10.2.153.220	10.2.153.220
222	10.2.153.221/32	10.2.153.221 – 10.2.153.221	10.2.153.221
223	10.2.153.222/32	10.2.153.222 – 10.2.153.222	10.2.153.222
224	10.2.153.223/32	10.2.153.223 – 10.2.153.223	10.2.153.223
225	10.2.153.224/32	10.2.153.224 – 10.2.153.224	10.2.153.224
226	10.2.153.225/32	10.2.153.225 – 10.2.153.225	10.2.153.225
227	10.2.153.226/32	10.2.153.226 – 10.2.153.226	10.2.153.226
228	10.2.153.227/32	10.2.153.227 – 10.2.153.227	10.2.153.227
229	10.2.153.228/32	10.2.153.228 – 10.2.153.228	10.2.153.228
230	10.2.153.229/32	10.2.153.229 – 10.2.153.229	10.2.153.229
231	10.2.153.230/32	10.2.153.230 – 10.2.153.230	10.2.153.230
232	10.2.153.231/32	10.2.153.231 – 10.2.153.231	10.2.153.231
233	10.2.153.232/32	10.2.153.232 – 10.2.153.232	10.2.153.232
234	10.2.153.233/32	10.2.153.233 – 10.2.153.233	10.2.153.233
235	10.2.153.234/32	10.2.153.234 – 10.2.153.234	10.2.153.234
236	10.2.153.235/32	10.2.153.235 – 10.2.153.235	10.2.153.235
237	10.2.153.236/32	10.2.153.236 – 10.2.153.236	10.2.153.236
238	10.2.153.237/32	10.2.153.237 – 10.2.153.237	10.2.153.237
239	10.2.153.238/32	10.2.153.238 – 10.2.153.238	10.2.153.238
240	10.2.153.239/32	10.2.153.239 – 10.2.153.239	10.2.153.239
241	10.2.153.240/32	10.2.153.240 – 10.2.153.240	10.2.153.240
242	10.2.153.241/32	10.2.153.241 – 10.2.153.241	10.2.153.241
243	10.2.153.242/32	10.2.153.242 – 10.2.153.242	10.2.153.242
244	10.2.153.243/32	10.2.153.243 – 10.2.153.243	10.2.153.243
245	10.2.153.244/32	10.2.153.244 – 10.2.153.244	10.2.153.244
246	10.2.153.245/32	10.2.153.245 – 10.2.153.245	10.2.153.245
247	10.2.153.246/32	10.2.153.246 – 10.2.153.246	10.2.153.246
248	10.2.153.247/32	10.2.153.247 – 10.2.153.247	10.2.153.247
249	10.2.153.248/32	10.2.153.248 – 10.2.153.248	10.2.153.248
250	10.2.153.249/32	10.2.153.249 – 10.2.153.249	10.2.153.249
251	10.2.153.250/32	10.2.153.250 – 10.2.153.250	10.2.153.250
252	10.2.153.251/32	10.2.153.251 – 10.2.153.251	10.2.153.251
253	10.2.153.252/32	10.2.153.252 – 10.2.153.252	10.2.153.252
254	10.2.153.253/32	10.2.153.253 – 10.2.153.253	10.2.153.253
255	10.2.153.254/32	10.2.153.254 – 10.2.153.254	10.2.153.254
256	10.2.153.255/32	10.2.153.255 – 10.2.153.255	10.2.153.255

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 →