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)10.72.236.0/22

network10.72.236.0/22

broadcast10.72.239.255

first host10.72.236.1

last host10.72.239.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.72.236.0/22

address00001010.01001000.11101100.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.01001000.11101100.00000000

broadcast00001010.01001000.11101111.11111111

green = network part, grey = host part

hex0x0a48ec00

decimal172551168

reverse dns0.236.72.10.in-addr.arpa

ipv4-mapped::ffff:a48:ec00

/22 split into /32 · 1,024 subnets

close ×

#	network	host range	broadcast
1	10.72.236.0/32	10.72.236.0 – 10.72.236.0	10.72.236.0
2	10.72.236.1/32	10.72.236.1 – 10.72.236.1	10.72.236.1
3	10.72.236.2/32	10.72.236.2 – 10.72.236.2	10.72.236.2
4	10.72.236.3/32	10.72.236.3 – 10.72.236.3	10.72.236.3
5	10.72.236.4/32	10.72.236.4 – 10.72.236.4	10.72.236.4
6	10.72.236.5/32	10.72.236.5 – 10.72.236.5	10.72.236.5
7	10.72.236.6/32	10.72.236.6 – 10.72.236.6	10.72.236.6
8	10.72.236.7/32	10.72.236.7 – 10.72.236.7	10.72.236.7
9	10.72.236.8/32	10.72.236.8 – 10.72.236.8	10.72.236.8
10	10.72.236.9/32	10.72.236.9 – 10.72.236.9	10.72.236.9
11	10.72.236.10/32	10.72.236.10 – 10.72.236.10	10.72.236.10
12	10.72.236.11/32	10.72.236.11 – 10.72.236.11	10.72.236.11
13	10.72.236.12/32	10.72.236.12 – 10.72.236.12	10.72.236.12
14	10.72.236.13/32	10.72.236.13 – 10.72.236.13	10.72.236.13
15	10.72.236.14/32	10.72.236.14 – 10.72.236.14	10.72.236.14
16	10.72.236.15/32	10.72.236.15 – 10.72.236.15	10.72.236.15
17	10.72.236.16/32	10.72.236.16 – 10.72.236.16	10.72.236.16
18	10.72.236.17/32	10.72.236.17 – 10.72.236.17	10.72.236.17
19	10.72.236.18/32	10.72.236.18 – 10.72.236.18	10.72.236.18
20	10.72.236.19/32	10.72.236.19 – 10.72.236.19	10.72.236.19
21	10.72.236.20/32	10.72.236.20 – 10.72.236.20	10.72.236.20
22	10.72.236.21/32	10.72.236.21 – 10.72.236.21	10.72.236.21
23	10.72.236.22/32	10.72.236.22 – 10.72.236.22	10.72.236.22
24	10.72.236.23/32	10.72.236.23 – 10.72.236.23	10.72.236.23
25	10.72.236.24/32	10.72.236.24 – 10.72.236.24	10.72.236.24
26	10.72.236.25/32	10.72.236.25 – 10.72.236.25	10.72.236.25
27	10.72.236.26/32	10.72.236.26 – 10.72.236.26	10.72.236.26
28	10.72.236.27/32	10.72.236.27 – 10.72.236.27	10.72.236.27
29	10.72.236.28/32	10.72.236.28 – 10.72.236.28	10.72.236.28
30	10.72.236.29/32	10.72.236.29 – 10.72.236.29	10.72.236.29
31	10.72.236.30/32	10.72.236.30 – 10.72.236.30	10.72.236.30
32	10.72.236.31/32	10.72.236.31 – 10.72.236.31	10.72.236.31
33	10.72.236.32/32	10.72.236.32 – 10.72.236.32	10.72.236.32
34	10.72.236.33/32	10.72.236.33 – 10.72.236.33	10.72.236.33
35	10.72.236.34/32	10.72.236.34 – 10.72.236.34	10.72.236.34
36	10.72.236.35/32	10.72.236.35 – 10.72.236.35	10.72.236.35
37	10.72.236.36/32	10.72.236.36 – 10.72.236.36	10.72.236.36
38	10.72.236.37/32	10.72.236.37 – 10.72.236.37	10.72.236.37
39	10.72.236.38/32	10.72.236.38 – 10.72.236.38	10.72.236.38
40	10.72.236.39/32	10.72.236.39 – 10.72.236.39	10.72.236.39
41	10.72.236.40/32	10.72.236.40 – 10.72.236.40	10.72.236.40
42	10.72.236.41/32	10.72.236.41 – 10.72.236.41	10.72.236.41
43	10.72.236.42/32	10.72.236.42 – 10.72.236.42	10.72.236.42
44	10.72.236.43/32	10.72.236.43 – 10.72.236.43	10.72.236.43
45	10.72.236.44/32	10.72.236.44 – 10.72.236.44	10.72.236.44
46	10.72.236.45/32	10.72.236.45 – 10.72.236.45	10.72.236.45
47	10.72.236.46/32	10.72.236.46 – 10.72.236.46	10.72.236.46
48	10.72.236.47/32	10.72.236.47 – 10.72.236.47	10.72.236.47
49	10.72.236.48/32	10.72.236.48 – 10.72.236.48	10.72.236.48
50	10.72.236.49/32	10.72.236.49 – 10.72.236.49	10.72.236.49
51	10.72.236.50/32	10.72.236.50 – 10.72.236.50	10.72.236.50
52	10.72.236.51/32	10.72.236.51 – 10.72.236.51	10.72.236.51
53	10.72.236.52/32	10.72.236.52 – 10.72.236.52	10.72.236.52
54	10.72.236.53/32	10.72.236.53 – 10.72.236.53	10.72.236.53
55	10.72.236.54/32	10.72.236.54 – 10.72.236.54	10.72.236.54
56	10.72.236.55/32	10.72.236.55 – 10.72.236.55	10.72.236.55
57	10.72.236.56/32	10.72.236.56 – 10.72.236.56	10.72.236.56
58	10.72.236.57/32	10.72.236.57 – 10.72.236.57	10.72.236.57
59	10.72.236.58/32	10.72.236.58 – 10.72.236.58	10.72.236.58
60	10.72.236.59/32	10.72.236.59 – 10.72.236.59	10.72.236.59
61	10.72.236.60/32	10.72.236.60 – 10.72.236.60	10.72.236.60
62	10.72.236.61/32	10.72.236.61 – 10.72.236.61	10.72.236.61
63	10.72.236.62/32	10.72.236.62 – 10.72.236.62	10.72.236.62
64	10.72.236.63/32	10.72.236.63 – 10.72.236.63	10.72.236.63
65	10.72.236.64/32	10.72.236.64 – 10.72.236.64	10.72.236.64
66	10.72.236.65/32	10.72.236.65 – 10.72.236.65	10.72.236.65
67	10.72.236.66/32	10.72.236.66 – 10.72.236.66	10.72.236.66
68	10.72.236.67/32	10.72.236.67 – 10.72.236.67	10.72.236.67
69	10.72.236.68/32	10.72.236.68 – 10.72.236.68	10.72.236.68
70	10.72.236.69/32	10.72.236.69 – 10.72.236.69	10.72.236.69
71	10.72.236.70/32	10.72.236.70 – 10.72.236.70	10.72.236.70
72	10.72.236.71/32	10.72.236.71 – 10.72.236.71	10.72.236.71
73	10.72.236.72/32	10.72.236.72 – 10.72.236.72	10.72.236.72
74	10.72.236.73/32	10.72.236.73 – 10.72.236.73	10.72.236.73
75	10.72.236.74/32	10.72.236.74 – 10.72.236.74	10.72.236.74
76	10.72.236.75/32	10.72.236.75 – 10.72.236.75	10.72.236.75
77	10.72.236.76/32	10.72.236.76 – 10.72.236.76	10.72.236.76
78	10.72.236.77/32	10.72.236.77 – 10.72.236.77	10.72.236.77
79	10.72.236.78/32	10.72.236.78 – 10.72.236.78	10.72.236.78
80	10.72.236.79/32	10.72.236.79 – 10.72.236.79	10.72.236.79
81	10.72.236.80/32	10.72.236.80 – 10.72.236.80	10.72.236.80
82	10.72.236.81/32	10.72.236.81 – 10.72.236.81	10.72.236.81
83	10.72.236.82/32	10.72.236.82 – 10.72.236.82	10.72.236.82
84	10.72.236.83/32	10.72.236.83 – 10.72.236.83	10.72.236.83
85	10.72.236.84/32	10.72.236.84 – 10.72.236.84	10.72.236.84
86	10.72.236.85/32	10.72.236.85 – 10.72.236.85	10.72.236.85
87	10.72.236.86/32	10.72.236.86 – 10.72.236.86	10.72.236.86
88	10.72.236.87/32	10.72.236.87 – 10.72.236.87	10.72.236.87
89	10.72.236.88/32	10.72.236.88 – 10.72.236.88	10.72.236.88
90	10.72.236.89/32	10.72.236.89 – 10.72.236.89	10.72.236.89
91	10.72.236.90/32	10.72.236.90 – 10.72.236.90	10.72.236.90
92	10.72.236.91/32	10.72.236.91 – 10.72.236.91	10.72.236.91
93	10.72.236.92/32	10.72.236.92 – 10.72.236.92	10.72.236.92
94	10.72.236.93/32	10.72.236.93 – 10.72.236.93	10.72.236.93
95	10.72.236.94/32	10.72.236.94 – 10.72.236.94	10.72.236.94
96	10.72.236.95/32	10.72.236.95 – 10.72.236.95	10.72.236.95
97	10.72.236.96/32	10.72.236.96 – 10.72.236.96	10.72.236.96
98	10.72.236.97/32	10.72.236.97 – 10.72.236.97	10.72.236.97
99	10.72.236.98/32	10.72.236.98 – 10.72.236.98	10.72.236.98
100	10.72.236.99/32	10.72.236.99 – 10.72.236.99	10.72.236.99
101	10.72.236.100/32	10.72.236.100 – 10.72.236.100	10.72.236.100
102	10.72.236.101/32	10.72.236.101 – 10.72.236.101	10.72.236.101
103	10.72.236.102/32	10.72.236.102 – 10.72.236.102	10.72.236.102
104	10.72.236.103/32	10.72.236.103 – 10.72.236.103	10.72.236.103
105	10.72.236.104/32	10.72.236.104 – 10.72.236.104	10.72.236.104
106	10.72.236.105/32	10.72.236.105 – 10.72.236.105	10.72.236.105
107	10.72.236.106/32	10.72.236.106 – 10.72.236.106	10.72.236.106
108	10.72.236.107/32	10.72.236.107 – 10.72.236.107	10.72.236.107
109	10.72.236.108/32	10.72.236.108 – 10.72.236.108	10.72.236.108
110	10.72.236.109/32	10.72.236.109 – 10.72.236.109	10.72.236.109
111	10.72.236.110/32	10.72.236.110 – 10.72.236.110	10.72.236.110
112	10.72.236.111/32	10.72.236.111 – 10.72.236.111	10.72.236.111
113	10.72.236.112/32	10.72.236.112 – 10.72.236.112	10.72.236.112
114	10.72.236.113/32	10.72.236.113 – 10.72.236.113	10.72.236.113
115	10.72.236.114/32	10.72.236.114 – 10.72.236.114	10.72.236.114
116	10.72.236.115/32	10.72.236.115 – 10.72.236.115	10.72.236.115
117	10.72.236.116/32	10.72.236.116 – 10.72.236.116	10.72.236.116
118	10.72.236.117/32	10.72.236.117 – 10.72.236.117	10.72.236.117
119	10.72.236.118/32	10.72.236.118 – 10.72.236.118	10.72.236.118
120	10.72.236.119/32	10.72.236.119 – 10.72.236.119	10.72.236.119
121	10.72.236.120/32	10.72.236.120 – 10.72.236.120	10.72.236.120
122	10.72.236.121/32	10.72.236.121 – 10.72.236.121	10.72.236.121
123	10.72.236.122/32	10.72.236.122 – 10.72.236.122	10.72.236.122
124	10.72.236.123/32	10.72.236.123 – 10.72.236.123	10.72.236.123
125	10.72.236.124/32	10.72.236.124 – 10.72.236.124	10.72.236.124
126	10.72.236.125/32	10.72.236.125 – 10.72.236.125	10.72.236.125
127	10.72.236.126/32	10.72.236.126 – 10.72.236.126	10.72.236.126
128	10.72.236.127/32	10.72.236.127 – 10.72.236.127	10.72.236.127
129	10.72.236.128/32	10.72.236.128 – 10.72.236.128	10.72.236.128
130	10.72.236.129/32	10.72.236.129 – 10.72.236.129	10.72.236.129
131	10.72.236.130/32	10.72.236.130 – 10.72.236.130	10.72.236.130
132	10.72.236.131/32	10.72.236.131 – 10.72.236.131	10.72.236.131
133	10.72.236.132/32	10.72.236.132 – 10.72.236.132	10.72.236.132
134	10.72.236.133/32	10.72.236.133 – 10.72.236.133	10.72.236.133
135	10.72.236.134/32	10.72.236.134 – 10.72.236.134	10.72.236.134
136	10.72.236.135/32	10.72.236.135 – 10.72.236.135	10.72.236.135
137	10.72.236.136/32	10.72.236.136 – 10.72.236.136	10.72.236.136
138	10.72.236.137/32	10.72.236.137 – 10.72.236.137	10.72.236.137
139	10.72.236.138/32	10.72.236.138 – 10.72.236.138	10.72.236.138
140	10.72.236.139/32	10.72.236.139 – 10.72.236.139	10.72.236.139
141	10.72.236.140/32	10.72.236.140 – 10.72.236.140	10.72.236.140
142	10.72.236.141/32	10.72.236.141 – 10.72.236.141	10.72.236.141
143	10.72.236.142/32	10.72.236.142 – 10.72.236.142	10.72.236.142
144	10.72.236.143/32	10.72.236.143 – 10.72.236.143	10.72.236.143
145	10.72.236.144/32	10.72.236.144 – 10.72.236.144	10.72.236.144
146	10.72.236.145/32	10.72.236.145 – 10.72.236.145	10.72.236.145
147	10.72.236.146/32	10.72.236.146 – 10.72.236.146	10.72.236.146
148	10.72.236.147/32	10.72.236.147 – 10.72.236.147	10.72.236.147
149	10.72.236.148/32	10.72.236.148 – 10.72.236.148	10.72.236.148
150	10.72.236.149/32	10.72.236.149 – 10.72.236.149	10.72.236.149
151	10.72.236.150/32	10.72.236.150 – 10.72.236.150	10.72.236.150
152	10.72.236.151/32	10.72.236.151 – 10.72.236.151	10.72.236.151
153	10.72.236.152/32	10.72.236.152 – 10.72.236.152	10.72.236.152
154	10.72.236.153/32	10.72.236.153 – 10.72.236.153	10.72.236.153
155	10.72.236.154/32	10.72.236.154 – 10.72.236.154	10.72.236.154
156	10.72.236.155/32	10.72.236.155 – 10.72.236.155	10.72.236.155
157	10.72.236.156/32	10.72.236.156 – 10.72.236.156	10.72.236.156
158	10.72.236.157/32	10.72.236.157 – 10.72.236.157	10.72.236.157
159	10.72.236.158/32	10.72.236.158 – 10.72.236.158	10.72.236.158
160	10.72.236.159/32	10.72.236.159 – 10.72.236.159	10.72.236.159
161	10.72.236.160/32	10.72.236.160 – 10.72.236.160	10.72.236.160
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210	10.72.236.209/32	10.72.236.209 – 10.72.236.209	10.72.236.209
211	10.72.236.210/32	10.72.236.210 – 10.72.236.210	10.72.236.210
212	10.72.236.211/32	10.72.236.211 – 10.72.236.211	10.72.236.211
213	10.72.236.212/32	10.72.236.212 – 10.72.236.212	10.72.236.212
214	10.72.236.213/32	10.72.236.213 – 10.72.236.213	10.72.236.213
215	10.72.236.214/32	10.72.236.214 – 10.72.236.214	10.72.236.214
216	10.72.236.215/32	10.72.236.215 – 10.72.236.215	10.72.236.215
217	10.72.236.216/32	10.72.236.216 – 10.72.236.216	10.72.236.216
218	10.72.236.217/32	10.72.236.217 – 10.72.236.217	10.72.236.217
219	10.72.236.218/32	10.72.236.218 – 10.72.236.218	10.72.236.218
220	10.72.236.219/32	10.72.236.219 – 10.72.236.219	10.72.236.219
221	10.72.236.220/32	10.72.236.220 – 10.72.236.220	10.72.236.220
222	10.72.236.221/32	10.72.236.221 – 10.72.236.221	10.72.236.221
223	10.72.236.222/32	10.72.236.222 – 10.72.236.222	10.72.236.222
224	10.72.236.223/32	10.72.236.223 – 10.72.236.223	10.72.236.223
225	10.72.236.224/32	10.72.236.224 – 10.72.236.224	10.72.236.224
226	10.72.236.225/32	10.72.236.225 – 10.72.236.225	10.72.236.225
227	10.72.236.226/32	10.72.236.226 – 10.72.236.226	10.72.236.226
228	10.72.236.227/32	10.72.236.227 – 10.72.236.227	10.72.236.227
229	10.72.236.228/32	10.72.236.228 – 10.72.236.228	10.72.236.228
230	10.72.236.229/32	10.72.236.229 – 10.72.236.229	10.72.236.229
231	10.72.236.230/32	10.72.236.230 – 10.72.236.230	10.72.236.230
232	10.72.236.231/32	10.72.236.231 – 10.72.236.231	10.72.236.231
233	10.72.236.232/32	10.72.236.232 – 10.72.236.232	10.72.236.232
234	10.72.236.233/32	10.72.236.233 – 10.72.236.233	10.72.236.233
235	10.72.236.234/32	10.72.236.234 – 10.72.236.234	10.72.236.234
236	10.72.236.235/32	10.72.236.235 – 10.72.236.235	10.72.236.235
237	10.72.236.236/32	10.72.236.236 – 10.72.236.236	10.72.236.236
238	10.72.236.237/32	10.72.236.237 – 10.72.236.237	10.72.236.237
239	10.72.236.238/32	10.72.236.238 – 10.72.236.238	10.72.236.238
240	10.72.236.239/32	10.72.236.239 – 10.72.236.239	10.72.236.239
241	10.72.236.240/32	10.72.236.240 – 10.72.236.240	10.72.236.240
242	10.72.236.241/32	10.72.236.241 – 10.72.236.241	10.72.236.241
243	10.72.236.242/32	10.72.236.242 – 10.72.236.242	10.72.236.242
244	10.72.236.243/32	10.72.236.243 – 10.72.236.243	10.72.236.243
245	10.72.236.244/32	10.72.236.244 – 10.72.236.244	10.72.236.244
246	10.72.236.245/32	10.72.236.245 – 10.72.236.245	10.72.236.245
247	10.72.236.246/32	10.72.236.246 – 10.72.236.246	10.72.236.246
248	10.72.236.247/32	10.72.236.247 – 10.72.236.247	10.72.236.247
249	10.72.236.248/32	10.72.236.248 – 10.72.236.248	10.72.236.248
250	10.72.236.249/32	10.72.236.249 – 10.72.236.249	10.72.236.249
251	10.72.236.250/32	10.72.236.250 – 10.72.236.250	10.72.236.250
252	10.72.236.251/32	10.72.236.251 – 10.72.236.251	10.72.236.251
253	10.72.236.252/32	10.72.236.252 – 10.72.236.252	10.72.236.252
254	10.72.236.253/32	10.72.236.253 – 10.72.236.253	10.72.236.253
255	10.72.236.254/32	10.72.236.254 – 10.72.236.254	10.72.236.254
256	10.72.236.255/32	10.72.236.255 – 10.72.236.255	10.72.236.255

showing 256 of 1,024

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 /22
/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	1
/23	255.255.254.0	512	510	2 split →
/24	255.255.255.0	256	254	4 split →
/25	255.255.255.128	128	126	8 split →
/26	255.255.255.192	64	62	16 split →
/27	255.255.255.224	32	30	32 split →
/28	255.255.255.240	16	14	64 split →
/29	255.255.255.248	8	6	128 split →
/30	255.255.255.252	4	2	256 split →
/31	255.255.255.254	2	2	512 split →
/32	255.255.255.255	1	1	1,024 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 →