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)10.0.208.0/22

network10.0.208.0/22

broadcast10.0.211.255

first host10.0.208.1

last host10.0.211.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.0.208.0/22

address00001010.00000000.11010000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000000.11010000.00000000

broadcast00001010.00000000.11010011.11111111

green = network part, grey = host part

hex0x0a00d000

decimal167825408

reverse dns0.208.0.10.in-addr.arpa

ipv4-mapped::ffff:a00:d000

/22 split into /32 · 1,024 subnets

close ×

#	network	host range	broadcast
1	10.0.208.0/32	10.0.208.0 – 10.0.208.0	10.0.208.0
2	10.0.208.1/32	10.0.208.1 – 10.0.208.1	10.0.208.1
3	10.0.208.2/32	10.0.208.2 – 10.0.208.2	10.0.208.2
4	10.0.208.3/32	10.0.208.3 – 10.0.208.3	10.0.208.3
5	10.0.208.4/32	10.0.208.4 – 10.0.208.4	10.0.208.4
6	10.0.208.5/32	10.0.208.5 – 10.0.208.5	10.0.208.5
7	10.0.208.6/32	10.0.208.6 – 10.0.208.6	10.0.208.6
8	10.0.208.7/32	10.0.208.7 – 10.0.208.7	10.0.208.7
9	10.0.208.8/32	10.0.208.8 – 10.0.208.8	10.0.208.8
10	10.0.208.9/32	10.0.208.9 – 10.0.208.9	10.0.208.9
11	10.0.208.10/32	10.0.208.10 – 10.0.208.10	10.0.208.10
12	10.0.208.11/32	10.0.208.11 – 10.0.208.11	10.0.208.11
13	10.0.208.12/32	10.0.208.12 – 10.0.208.12	10.0.208.12
14	10.0.208.13/32	10.0.208.13 – 10.0.208.13	10.0.208.13
15	10.0.208.14/32	10.0.208.14 – 10.0.208.14	10.0.208.14
16	10.0.208.15/32	10.0.208.15 – 10.0.208.15	10.0.208.15
17	10.0.208.16/32	10.0.208.16 – 10.0.208.16	10.0.208.16
18	10.0.208.17/32	10.0.208.17 – 10.0.208.17	10.0.208.17
19	10.0.208.18/32	10.0.208.18 – 10.0.208.18	10.0.208.18
20	10.0.208.19/32	10.0.208.19 – 10.0.208.19	10.0.208.19
21	10.0.208.20/32	10.0.208.20 – 10.0.208.20	10.0.208.20
22	10.0.208.21/32	10.0.208.21 – 10.0.208.21	10.0.208.21
23	10.0.208.22/32	10.0.208.22 – 10.0.208.22	10.0.208.22
24	10.0.208.23/32	10.0.208.23 – 10.0.208.23	10.0.208.23
25	10.0.208.24/32	10.0.208.24 – 10.0.208.24	10.0.208.24
26	10.0.208.25/32	10.0.208.25 – 10.0.208.25	10.0.208.25
27	10.0.208.26/32	10.0.208.26 – 10.0.208.26	10.0.208.26
28	10.0.208.27/32	10.0.208.27 – 10.0.208.27	10.0.208.27
29	10.0.208.28/32	10.0.208.28 – 10.0.208.28	10.0.208.28
30	10.0.208.29/32	10.0.208.29 – 10.0.208.29	10.0.208.29
31	10.0.208.30/32	10.0.208.30 – 10.0.208.30	10.0.208.30
32	10.0.208.31/32	10.0.208.31 – 10.0.208.31	10.0.208.31
33	10.0.208.32/32	10.0.208.32 – 10.0.208.32	10.0.208.32
34	10.0.208.33/32	10.0.208.33 – 10.0.208.33	10.0.208.33
35	10.0.208.34/32	10.0.208.34 – 10.0.208.34	10.0.208.34
36	10.0.208.35/32	10.0.208.35 – 10.0.208.35	10.0.208.35
37	10.0.208.36/32	10.0.208.36 – 10.0.208.36	10.0.208.36
38	10.0.208.37/32	10.0.208.37 – 10.0.208.37	10.0.208.37
39	10.0.208.38/32	10.0.208.38 – 10.0.208.38	10.0.208.38
40	10.0.208.39/32	10.0.208.39 – 10.0.208.39	10.0.208.39
41	10.0.208.40/32	10.0.208.40 – 10.0.208.40	10.0.208.40
42	10.0.208.41/32	10.0.208.41 – 10.0.208.41	10.0.208.41
43	10.0.208.42/32	10.0.208.42 – 10.0.208.42	10.0.208.42
44	10.0.208.43/32	10.0.208.43 – 10.0.208.43	10.0.208.43
45	10.0.208.44/32	10.0.208.44 – 10.0.208.44	10.0.208.44
46	10.0.208.45/32	10.0.208.45 – 10.0.208.45	10.0.208.45
47	10.0.208.46/32	10.0.208.46 – 10.0.208.46	10.0.208.46
48	10.0.208.47/32	10.0.208.47 – 10.0.208.47	10.0.208.47
49	10.0.208.48/32	10.0.208.48 – 10.0.208.48	10.0.208.48
50	10.0.208.49/32	10.0.208.49 – 10.0.208.49	10.0.208.49
51	10.0.208.50/32	10.0.208.50 – 10.0.208.50	10.0.208.50
52	10.0.208.51/32	10.0.208.51 – 10.0.208.51	10.0.208.51
53	10.0.208.52/32	10.0.208.52 – 10.0.208.52	10.0.208.52
54	10.0.208.53/32	10.0.208.53 – 10.0.208.53	10.0.208.53
55	10.0.208.54/32	10.0.208.54 – 10.0.208.54	10.0.208.54
56	10.0.208.55/32	10.0.208.55 – 10.0.208.55	10.0.208.55
57	10.0.208.56/32	10.0.208.56 – 10.0.208.56	10.0.208.56
58	10.0.208.57/32	10.0.208.57 – 10.0.208.57	10.0.208.57
59	10.0.208.58/32	10.0.208.58 – 10.0.208.58	10.0.208.58
60	10.0.208.59/32	10.0.208.59 – 10.0.208.59	10.0.208.59
61	10.0.208.60/32	10.0.208.60 – 10.0.208.60	10.0.208.60
62	10.0.208.61/32	10.0.208.61 – 10.0.208.61	10.0.208.61
63	10.0.208.62/32	10.0.208.62 – 10.0.208.62	10.0.208.62
64	10.0.208.63/32	10.0.208.63 – 10.0.208.63	10.0.208.63
65	10.0.208.64/32	10.0.208.64 – 10.0.208.64	10.0.208.64
66	10.0.208.65/32	10.0.208.65 – 10.0.208.65	10.0.208.65
67	10.0.208.66/32	10.0.208.66 – 10.0.208.66	10.0.208.66
68	10.0.208.67/32	10.0.208.67 – 10.0.208.67	10.0.208.67
69	10.0.208.68/32	10.0.208.68 – 10.0.208.68	10.0.208.68
70	10.0.208.69/32	10.0.208.69 – 10.0.208.69	10.0.208.69
71	10.0.208.70/32	10.0.208.70 – 10.0.208.70	10.0.208.70
72	10.0.208.71/32	10.0.208.71 – 10.0.208.71	10.0.208.71
73	10.0.208.72/32	10.0.208.72 – 10.0.208.72	10.0.208.72
74	10.0.208.73/32	10.0.208.73 – 10.0.208.73	10.0.208.73
75	10.0.208.74/32	10.0.208.74 – 10.0.208.74	10.0.208.74
76	10.0.208.75/32	10.0.208.75 – 10.0.208.75	10.0.208.75
77	10.0.208.76/32	10.0.208.76 – 10.0.208.76	10.0.208.76
78	10.0.208.77/32	10.0.208.77 – 10.0.208.77	10.0.208.77
79	10.0.208.78/32	10.0.208.78 – 10.0.208.78	10.0.208.78
80	10.0.208.79/32	10.0.208.79 – 10.0.208.79	10.0.208.79
81	10.0.208.80/32	10.0.208.80 – 10.0.208.80	10.0.208.80
82	10.0.208.81/32	10.0.208.81 – 10.0.208.81	10.0.208.81
83	10.0.208.82/32	10.0.208.82 – 10.0.208.82	10.0.208.82
84	10.0.208.83/32	10.0.208.83 – 10.0.208.83	10.0.208.83
85	10.0.208.84/32	10.0.208.84 – 10.0.208.84	10.0.208.84
86	10.0.208.85/32	10.0.208.85 – 10.0.208.85	10.0.208.85
87	10.0.208.86/32	10.0.208.86 – 10.0.208.86	10.0.208.86
88	10.0.208.87/32	10.0.208.87 – 10.0.208.87	10.0.208.87
89	10.0.208.88/32	10.0.208.88 – 10.0.208.88	10.0.208.88
90	10.0.208.89/32	10.0.208.89 – 10.0.208.89	10.0.208.89
91	10.0.208.90/32	10.0.208.90 – 10.0.208.90	10.0.208.90
92	10.0.208.91/32	10.0.208.91 – 10.0.208.91	10.0.208.91
93	10.0.208.92/32	10.0.208.92 – 10.0.208.92	10.0.208.92
94	10.0.208.93/32	10.0.208.93 – 10.0.208.93	10.0.208.93
95	10.0.208.94/32	10.0.208.94 – 10.0.208.94	10.0.208.94
96	10.0.208.95/32	10.0.208.95 – 10.0.208.95	10.0.208.95
97	10.0.208.96/32	10.0.208.96 – 10.0.208.96	10.0.208.96
98	10.0.208.97/32	10.0.208.97 – 10.0.208.97	10.0.208.97
99	10.0.208.98/32	10.0.208.98 – 10.0.208.98	10.0.208.98
100	10.0.208.99/32	10.0.208.99 – 10.0.208.99	10.0.208.99
101	10.0.208.100/32	10.0.208.100 – 10.0.208.100	10.0.208.100
102	10.0.208.101/32	10.0.208.101 – 10.0.208.101	10.0.208.101
103	10.0.208.102/32	10.0.208.102 – 10.0.208.102	10.0.208.102
104	10.0.208.103/32	10.0.208.103 – 10.0.208.103	10.0.208.103
105	10.0.208.104/32	10.0.208.104 – 10.0.208.104	10.0.208.104
106	10.0.208.105/32	10.0.208.105 – 10.0.208.105	10.0.208.105
107	10.0.208.106/32	10.0.208.106 – 10.0.208.106	10.0.208.106
108	10.0.208.107/32	10.0.208.107 – 10.0.208.107	10.0.208.107
109	10.0.208.108/32	10.0.208.108 – 10.0.208.108	10.0.208.108
110	10.0.208.109/32	10.0.208.109 – 10.0.208.109	10.0.208.109
111	10.0.208.110/32	10.0.208.110 – 10.0.208.110	10.0.208.110
112	10.0.208.111/32	10.0.208.111 – 10.0.208.111	10.0.208.111
113	10.0.208.112/32	10.0.208.112 – 10.0.208.112	10.0.208.112
114	10.0.208.113/32	10.0.208.113 – 10.0.208.113	10.0.208.113
115	10.0.208.114/32	10.0.208.114 – 10.0.208.114	10.0.208.114
116	10.0.208.115/32	10.0.208.115 – 10.0.208.115	10.0.208.115
117	10.0.208.116/32	10.0.208.116 – 10.0.208.116	10.0.208.116
118	10.0.208.117/32	10.0.208.117 – 10.0.208.117	10.0.208.117
119	10.0.208.118/32	10.0.208.118 – 10.0.208.118	10.0.208.118
120	10.0.208.119/32	10.0.208.119 – 10.0.208.119	10.0.208.119
121	10.0.208.120/32	10.0.208.120 – 10.0.208.120	10.0.208.120
122	10.0.208.121/32	10.0.208.121 – 10.0.208.121	10.0.208.121
123	10.0.208.122/32	10.0.208.122 – 10.0.208.122	10.0.208.122
124	10.0.208.123/32	10.0.208.123 – 10.0.208.123	10.0.208.123
125	10.0.208.124/32	10.0.208.124 – 10.0.208.124	10.0.208.124
126	10.0.208.125/32	10.0.208.125 – 10.0.208.125	10.0.208.125
127	10.0.208.126/32	10.0.208.126 – 10.0.208.126	10.0.208.126
128	10.0.208.127/32	10.0.208.127 – 10.0.208.127	10.0.208.127
129	10.0.208.128/32	10.0.208.128 – 10.0.208.128	10.0.208.128
130	10.0.208.129/32	10.0.208.129 – 10.0.208.129	10.0.208.129
131	10.0.208.130/32	10.0.208.130 – 10.0.208.130	10.0.208.130
132	10.0.208.131/32	10.0.208.131 – 10.0.208.131	10.0.208.131
133	10.0.208.132/32	10.0.208.132 – 10.0.208.132	10.0.208.132
134	10.0.208.133/32	10.0.208.133 – 10.0.208.133	10.0.208.133
135	10.0.208.134/32	10.0.208.134 – 10.0.208.134	10.0.208.134
136	10.0.208.135/32	10.0.208.135 – 10.0.208.135	10.0.208.135
137	10.0.208.136/32	10.0.208.136 – 10.0.208.136	10.0.208.136
138	10.0.208.137/32	10.0.208.137 – 10.0.208.137	10.0.208.137
139	10.0.208.138/32	10.0.208.138 – 10.0.208.138	10.0.208.138
140	10.0.208.139/32	10.0.208.139 – 10.0.208.139	10.0.208.139
141	10.0.208.140/32	10.0.208.140 – 10.0.208.140	10.0.208.140
142	10.0.208.141/32	10.0.208.141 – 10.0.208.141	10.0.208.141
143	10.0.208.142/32	10.0.208.142 – 10.0.208.142	10.0.208.142
144	10.0.208.143/32	10.0.208.143 – 10.0.208.143	10.0.208.143
145	10.0.208.144/32	10.0.208.144 – 10.0.208.144	10.0.208.144
146	10.0.208.145/32	10.0.208.145 – 10.0.208.145	10.0.208.145
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210	10.0.208.209/32	10.0.208.209 – 10.0.208.209	10.0.208.209
211	10.0.208.210/32	10.0.208.210 – 10.0.208.210	10.0.208.210
212	10.0.208.211/32	10.0.208.211 – 10.0.208.211	10.0.208.211
213	10.0.208.212/32	10.0.208.212 – 10.0.208.212	10.0.208.212
214	10.0.208.213/32	10.0.208.213 – 10.0.208.213	10.0.208.213
215	10.0.208.214/32	10.0.208.214 – 10.0.208.214	10.0.208.214
216	10.0.208.215/32	10.0.208.215 – 10.0.208.215	10.0.208.215
217	10.0.208.216/32	10.0.208.216 – 10.0.208.216	10.0.208.216
218	10.0.208.217/32	10.0.208.217 – 10.0.208.217	10.0.208.217
219	10.0.208.218/32	10.0.208.218 – 10.0.208.218	10.0.208.218
220	10.0.208.219/32	10.0.208.219 – 10.0.208.219	10.0.208.219
221	10.0.208.220/32	10.0.208.220 – 10.0.208.220	10.0.208.220
222	10.0.208.221/32	10.0.208.221 – 10.0.208.221	10.0.208.221
223	10.0.208.222/32	10.0.208.222 – 10.0.208.222	10.0.208.222
224	10.0.208.223/32	10.0.208.223 – 10.0.208.223	10.0.208.223
225	10.0.208.224/32	10.0.208.224 – 10.0.208.224	10.0.208.224
226	10.0.208.225/32	10.0.208.225 – 10.0.208.225	10.0.208.225
227	10.0.208.226/32	10.0.208.226 – 10.0.208.226	10.0.208.226
228	10.0.208.227/32	10.0.208.227 – 10.0.208.227	10.0.208.227
229	10.0.208.228/32	10.0.208.228 – 10.0.208.228	10.0.208.228
230	10.0.208.229/32	10.0.208.229 – 10.0.208.229	10.0.208.229
231	10.0.208.230/32	10.0.208.230 – 10.0.208.230	10.0.208.230
232	10.0.208.231/32	10.0.208.231 – 10.0.208.231	10.0.208.231
233	10.0.208.232/32	10.0.208.232 – 10.0.208.232	10.0.208.232
234	10.0.208.233/32	10.0.208.233 – 10.0.208.233	10.0.208.233
235	10.0.208.234/32	10.0.208.234 – 10.0.208.234	10.0.208.234
236	10.0.208.235/32	10.0.208.235 – 10.0.208.235	10.0.208.235
237	10.0.208.236/32	10.0.208.236 – 10.0.208.236	10.0.208.236
238	10.0.208.237/32	10.0.208.237 – 10.0.208.237	10.0.208.237
239	10.0.208.238/32	10.0.208.238 – 10.0.208.238	10.0.208.238
240	10.0.208.239/32	10.0.208.239 – 10.0.208.239	10.0.208.239
241	10.0.208.240/32	10.0.208.240 – 10.0.208.240	10.0.208.240
242	10.0.208.241/32	10.0.208.241 – 10.0.208.241	10.0.208.241
243	10.0.208.242/32	10.0.208.242 – 10.0.208.242	10.0.208.242
244	10.0.208.243/32	10.0.208.243 – 10.0.208.243	10.0.208.243
245	10.0.208.244/32	10.0.208.244 – 10.0.208.244	10.0.208.244
246	10.0.208.245/32	10.0.208.245 – 10.0.208.245	10.0.208.245
247	10.0.208.246/32	10.0.208.246 – 10.0.208.246	10.0.208.246
248	10.0.208.247/32	10.0.208.247 – 10.0.208.247	10.0.208.247
249	10.0.208.248/32	10.0.208.248 – 10.0.208.248	10.0.208.248
250	10.0.208.249/32	10.0.208.249 – 10.0.208.249	10.0.208.249
251	10.0.208.250/32	10.0.208.250 – 10.0.208.250	10.0.208.250
252	10.0.208.251/32	10.0.208.251 – 10.0.208.251	10.0.208.251
253	10.0.208.252/32	10.0.208.252 – 10.0.208.252	10.0.208.252
254	10.0.208.253/32	10.0.208.253 – 10.0.208.253	10.0.208.253
255	10.0.208.254/32	10.0.208.254 – 10.0.208.254	10.0.208.254
256	10.0.208.255/32	10.0.208.255 – 10.0.208.255	10.0.208.255

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 →