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)10.149.183.0/24

network10.149.183.0/24

broadcast10.149.183.255

first host10.149.183.1

last host10.149.183.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.149.183.0/24

address00001010.10010101.10110111.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.10010101.10110111.00000000

broadcast00001010.10010101.10110111.11111111

green = network part, grey = host part

hex0x0a95b700

decimal177583872

reverse dns0.183.149.10.in-addr.arpa

ipv4-mapped::ffff:a95:b700

/24 split into /32 · 256 subnets

close ×

#	network	host range	broadcast
1	10.149.183.0/32	10.149.183.0 – 10.149.183.0	10.149.183.0
2	10.149.183.1/32	10.149.183.1 – 10.149.183.1	10.149.183.1
3	10.149.183.2/32	10.149.183.2 – 10.149.183.2	10.149.183.2
4	10.149.183.3/32	10.149.183.3 – 10.149.183.3	10.149.183.3
5	10.149.183.4/32	10.149.183.4 – 10.149.183.4	10.149.183.4
6	10.149.183.5/32	10.149.183.5 – 10.149.183.5	10.149.183.5
7	10.149.183.6/32	10.149.183.6 – 10.149.183.6	10.149.183.6
8	10.149.183.7/32	10.149.183.7 – 10.149.183.7	10.149.183.7
9	10.149.183.8/32	10.149.183.8 – 10.149.183.8	10.149.183.8
10	10.149.183.9/32	10.149.183.9 – 10.149.183.9	10.149.183.9
11	10.149.183.10/32	10.149.183.10 – 10.149.183.10	10.149.183.10
12	10.149.183.11/32	10.149.183.11 – 10.149.183.11	10.149.183.11
13	10.149.183.12/32	10.149.183.12 – 10.149.183.12	10.149.183.12
14	10.149.183.13/32	10.149.183.13 – 10.149.183.13	10.149.183.13
15	10.149.183.14/32	10.149.183.14 – 10.149.183.14	10.149.183.14
16	10.149.183.15/32	10.149.183.15 – 10.149.183.15	10.149.183.15
17	10.149.183.16/32	10.149.183.16 – 10.149.183.16	10.149.183.16
18	10.149.183.17/32	10.149.183.17 – 10.149.183.17	10.149.183.17
19	10.149.183.18/32	10.149.183.18 – 10.149.183.18	10.149.183.18
20	10.149.183.19/32	10.149.183.19 – 10.149.183.19	10.149.183.19
21	10.149.183.20/32	10.149.183.20 – 10.149.183.20	10.149.183.20
22	10.149.183.21/32	10.149.183.21 – 10.149.183.21	10.149.183.21
23	10.149.183.22/32	10.149.183.22 – 10.149.183.22	10.149.183.22
24	10.149.183.23/32	10.149.183.23 – 10.149.183.23	10.149.183.23
25	10.149.183.24/32	10.149.183.24 – 10.149.183.24	10.149.183.24
26	10.149.183.25/32	10.149.183.25 – 10.149.183.25	10.149.183.25
27	10.149.183.26/32	10.149.183.26 – 10.149.183.26	10.149.183.26
28	10.149.183.27/32	10.149.183.27 – 10.149.183.27	10.149.183.27
29	10.149.183.28/32	10.149.183.28 – 10.149.183.28	10.149.183.28
30	10.149.183.29/32	10.149.183.29 – 10.149.183.29	10.149.183.29
31	10.149.183.30/32	10.149.183.30 – 10.149.183.30	10.149.183.30
32	10.149.183.31/32	10.149.183.31 – 10.149.183.31	10.149.183.31
33	10.149.183.32/32	10.149.183.32 – 10.149.183.32	10.149.183.32
34	10.149.183.33/32	10.149.183.33 – 10.149.183.33	10.149.183.33
35	10.149.183.34/32	10.149.183.34 – 10.149.183.34	10.149.183.34
36	10.149.183.35/32	10.149.183.35 – 10.149.183.35	10.149.183.35
37	10.149.183.36/32	10.149.183.36 – 10.149.183.36	10.149.183.36
38	10.149.183.37/32	10.149.183.37 – 10.149.183.37	10.149.183.37
39	10.149.183.38/32	10.149.183.38 – 10.149.183.38	10.149.183.38
40	10.149.183.39/32	10.149.183.39 – 10.149.183.39	10.149.183.39
41	10.149.183.40/32	10.149.183.40 – 10.149.183.40	10.149.183.40
42	10.149.183.41/32	10.149.183.41 – 10.149.183.41	10.149.183.41
43	10.149.183.42/32	10.149.183.42 – 10.149.183.42	10.149.183.42
44	10.149.183.43/32	10.149.183.43 – 10.149.183.43	10.149.183.43
45	10.149.183.44/32	10.149.183.44 – 10.149.183.44	10.149.183.44
46	10.149.183.45/32	10.149.183.45 – 10.149.183.45	10.149.183.45
47	10.149.183.46/32	10.149.183.46 – 10.149.183.46	10.149.183.46
48	10.149.183.47/32	10.149.183.47 – 10.149.183.47	10.149.183.47
49	10.149.183.48/32	10.149.183.48 – 10.149.183.48	10.149.183.48
50	10.149.183.49/32	10.149.183.49 – 10.149.183.49	10.149.183.49
51	10.149.183.50/32	10.149.183.50 – 10.149.183.50	10.149.183.50
52	10.149.183.51/32	10.149.183.51 – 10.149.183.51	10.149.183.51
53	10.149.183.52/32	10.149.183.52 – 10.149.183.52	10.149.183.52
54	10.149.183.53/32	10.149.183.53 – 10.149.183.53	10.149.183.53
55	10.149.183.54/32	10.149.183.54 – 10.149.183.54	10.149.183.54
56	10.149.183.55/32	10.149.183.55 – 10.149.183.55	10.149.183.55
57	10.149.183.56/32	10.149.183.56 – 10.149.183.56	10.149.183.56
58	10.149.183.57/32	10.149.183.57 – 10.149.183.57	10.149.183.57
59	10.149.183.58/32	10.149.183.58 – 10.149.183.58	10.149.183.58
60	10.149.183.59/32	10.149.183.59 – 10.149.183.59	10.149.183.59
61	10.149.183.60/32	10.149.183.60 – 10.149.183.60	10.149.183.60
62	10.149.183.61/32	10.149.183.61 – 10.149.183.61	10.149.183.61
63	10.149.183.62/32	10.149.183.62 – 10.149.183.62	10.149.183.62
64	10.149.183.63/32	10.149.183.63 – 10.149.183.63	10.149.183.63
65	10.149.183.64/32	10.149.183.64 – 10.149.183.64	10.149.183.64
66	10.149.183.65/32	10.149.183.65 – 10.149.183.65	10.149.183.65
67	10.149.183.66/32	10.149.183.66 – 10.149.183.66	10.149.183.66
68	10.149.183.67/32	10.149.183.67 – 10.149.183.67	10.149.183.67
69	10.149.183.68/32	10.149.183.68 – 10.149.183.68	10.149.183.68
70	10.149.183.69/32	10.149.183.69 – 10.149.183.69	10.149.183.69
71	10.149.183.70/32	10.149.183.70 – 10.149.183.70	10.149.183.70
72	10.149.183.71/32	10.149.183.71 – 10.149.183.71	10.149.183.71
73	10.149.183.72/32	10.149.183.72 – 10.149.183.72	10.149.183.72
74	10.149.183.73/32	10.149.183.73 – 10.149.183.73	10.149.183.73
75	10.149.183.74/32	10.149.183.74 – 10.149.183.74	10.149.183.74
76	10.149.183.75/32	10.149.183.75 – 10.149.183.75	10.149.183.75
77	10.149.183.76/32	10.149.183.76 – 10.149.183.76	10.149.183.76
78	10.149.183.77/32	10.149.183.77 – 10.149.183.77	10.149.183.77
79	10.149.183.78/32	10.149.183.78 – 10.149.183.78	10.149.183.78
80	10.149.183.79/32	10.149.183.79 – 10.149.183.79	10.149.183.79
81	10.149.183.80/32	10.149.183.80 – 10.149.183.80	10.149.183.80
82	10.149.183.81/32	10.149.183.81 – 10.149.183.81	10.149.183.81
83	10.149.183.82/32	10.149.183.82 – 10.149.183.82	10.149.183.82
84	10.149.183.83/32	10.149.183.83 – 10.149.183.83	10.149.183.83
85	10.149.183.84/32	10.149.183.84 – 10.149.183.84	10.149.183.84
86	10.149.183.85/32	10.149.183.85 – 10.149.183.85	10.149.183.85
87	10.149.183.86/32	10.149.183.86 – 10.149.183.86	10.149.183.86
88	10.149.183.87/32	10.149.183.87 – 10.149.183.87	10.149.183.87
89	10.149.183.88/32	10.149.183.88 – 10.149.183.88	10.149.183.88
90	10.149.183.89/32	10.149.183.89 – 10.149.183.89	10.149.183.89
91	10.149.183.90/32	10.149.183.90 – 10.149.183.90	10.149.183.90
92	10.149.183.91/32	10.149.183.91 – 10.149.183.91	10.149.183.91
93	10.149.183.92/32	10.149.183.92 – 10.149.183.92	10.149.183.92
94	10.149.183.93/32	10.149.183.93 – 10.149.183.93	10.149.183.93
95	10.149.183.94/32	10.149.183.94 – 10.149.183.94	10.149.183.94
96	10.149.183.95/32	10.149.183.95 – 10.149.183.95	10.149.183.95
97	10.149.183.96/32	10.149.183.96 – 10.149.183.96	10.149.183.96
98	10.149.183.97/32	10.149.183.97 – 10.149.183.97	10.149.183.97
99	10.149.183.98/32	10.149.183.98 – 10.149.183.98	10.149.183.98
100	10.149.183.99/32	10.149.183.99 – 10.149.183.99	10.149.183.99
101	10.149.183.100/32	10.149.183.100 – 10.149.183.100	10.149.183.100
102	10.149.183.101/32	10.149.183.101 – 10.149.183.101	10.149.183.101
103	10.149.183.102/32	10.149.183.102 – 10.149.183.102	10.149.183.102
104	10.149.183.103/32	10.149.183.103 – 10.149.183.103	10.149.183.103
105	10.149.183.104/32	10.149.183.104 – 10.149.183.104	10.149.183.104
106	10.149.183.105/32	10.149.183.105 – 10.149.183.105	10.149.183.105
107	10.149.183.106/32	10.149.183.106 – 10.149.183.106	10.149.183.106
108	10.149.183.107/32	10.149.183.107 – 10.149.183.107	10.149.183.107
109	10.149.183.108/32	10.149.183.108 – 10.149.183.108	10.149.183.108
110	10.149.183.109/32	10.149.183.109 – 10.149.183.109	10.149.183.109
111	10.149.183.110/32	10.149.183.110 – 10.149.183.110	10.149.183.110
112	10.149.183.111/32	10.149.183.111 – 10.149.183.111	10.149.183.111
113	10.149.183.112/32	10.149.183.112 – 10.149.183.112	10.149.183.112
114	10.149.183.113/32	10.149.183.113 – 10.149.183.113	10.149.183.113
115	10.149.183.114/32	10.149.183.114 – 10.149.183.114	10.149.183.114
116	10.149.183.115/32	10.149.183.115 – 10.149.183.115	10.149.183.115
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127	10.149.183.126/32	10.149.183.126 – 10.149.183.126	10.149.183.126
128	10.149.183.127/32	10.149.183.127 – 10.149.183.127	10.149.183.127
129	10.149.183.128/32	10.149.183.128 – 10.149.183.128	10.149.183.128
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133	10.149.183.132/32	10.149.183.132 – 10.149.183.132	10.149.183.132
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135	10.149.183.134/32	10.149.183.134 – 10.149.183.134	10.149.183.134
136	10.149.183.135/32	10.149.183.135 – 10.149.183.135	10.149.183.135
137	10.149.183.136/32	10.149.183.136 – 10.149.183.136	10.149.183.136
138	10.149.183.137/32	10.149.183.137 – 10.149.183.137	10.149.183.137
139	10.149.183.138/32	10.149.183.138 – 10.149.183.138	10.149.183.138
140	10.149.183.139/32	10.149.183.139 – 10.149.183.139	10.149.183.139
141	10.149.183.140/32	10.149.183.140 – 10.149.183.140	10.149.183.140
142	10.149.183.141/32	10.149.183.141 – 10.149.183.141	10.149.183.141
143	10.149.183.142/32	10.149.183.142 – 10.149.183.142	10.149.183.142
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146	10.149.183.145/32	10.149.183.145 – 10.149.183.145	10.149.183.145
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149	10.149.183.148/32	10.149.183.148 – 10.149.183.148	10.149.183.148
150	10.149.183.149/32	10.149.183.149 – 10.149.183.149	10.149.183.149
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210	10.149.183.209/32	10.149.183.209 – 10.149.183.209	10.149.183.209
211	10.149.183.210/32	10.149.183.210 – 10.149.183.210	10.149.183.210
212	10.149.183.211/32	10.149.183.211 – 10.149.183.211	10.149.183.211
213	10.149.183.212/32	10.149.183.212 – 10.149.183.212	10.149.183.212
214	10.149.183.213/32	10.149.183.213 – 10.149.183.213	10.149.183.213
215	10.149.183.214/32	10.149.183.214 – 10.149.183.214	10.149.183.214
216	10.149.183.215/32	10.149.183.215 – 10.149.183.215	10.149.183.215
217	10.149.183.216/32	10.149.183.216 – 10.149.183.216	10.149.183.216
218	10.149.183.217/32	10.149.183.217 – 10.149.183.217	10.149.183.217
219	10.149.183.218/32	10.149.183.218 – 10.149.183.218	10.149.183.218
220	10.149.183.219/32	10.149.183.219 – 10.149.183.219	10.149.183.219
221	10.149.183.220/32	10.149.183.220 – 10.149.183.220	10.149.183.220
222	10.149.183.221/32	10.149.183.221 – 10.149.183.221	10.149.183.221
223	10.149.183.222/32	10.149.183.222 – 10.149.183.222	10.149.183.222
224	10.149.183.223/32	10.149.183.223 – 10.149.183.223	10.149.183.223
225	10.149.183.224/32	10.149.183.224 – 10.149.183.224	10.149.183.224
226	10.149.183.225/32	10.149.183.225 – 10.149.183.225	10.149.183.225
227	10.149.183.226/32	10.149.183.226 – 10.149.183.226	10.149.183.226
228	10.149.183.227/32	10.149.183.227 – 10.149.183.227	10.149.183.227
229	10.149.183.228/32	10.149.183.228 – 10.149.183.228	10.149.183.228
230	10.149.183.229/32	10.149.183.229 – 10.149.183.229	10.149.183.229
231	10.149.183.230/32	10.149.183.230 – 10.149.183.230	10.149.183.230
232	10.149.183.231/32	10.149.183.231 – 10.149.183.231	10.149.183.231
233	10.149.183.232/32	10.149.183.232 – 10.149.183.232	10.149.183.232
234	10.149.183.233/32	10.149.183.233 – 10.149.183.233	10.149.183.233
235	10.149.183.234/32	10.149.183.234 – 10.149.183.234	10.149.183.234
236	10.149.183.235/32	10.149.183.235 – 10.149.183.235	10.149.183.235
237	10.149.183.236/32	10.149.183.236 – 10.149.183.236	10.149.183.236
238	10.149.183.237/32	10.149.183.237 – 10.149.183.237	10.149.183.237
239	10.149.183.238/32	10.149.183.238 – 10.149.183.238	10.149.183.238
240	10.149.183.239/32	10.149.183.239 – 10.149.183.239	10.149.183.239
241	10.149.183.240/32	10.149.183.240 – 10.149.183.240	10.149.183.240
242	10.149.183.241/32	10.149.183.241 – 10.149.183.241	10.149.183.241
243	10.149.183.242/32	10.149.183.242 – 10.149.183.242	10.149.183.242
244	10.149.183.243/32	10.149.183.243 – 10.149.183.243	10.149.183.243
245	10.149.183.244/32	10.149.183.244 – 10.149.183.244	10.149.183.244
246	10.149.183.245/32	10.149.183.245 – 10.149.183.245	10.149.183.245
247	10.149.183.246/32	10.149.183.246 – 10.149.183.246	10.149.183.246
248	10.149.183.247/32	10.149.183.247 – 10.149.183.247	10.149.183.247
249	10.149.183.248/32	10.149.183.248 – 10.149.183.248	10.149.183.248
250	10.149.183.249/32	10.149.183.249 – 10.149.183.249	10.149.183.249
251	10.149.183.250/32	10.149.183.250 – 10.149.183.250	10.149.183.250
252	10.149.183.251/32	10.149.183.251 – 10.149.183.251	10.149.183.251
253	10.149.183.252/32	10.149.183.252 – 10.149.183.252	10.149.183.252
254	10.149.183.253/32	10.149.183.253 – 10.149.183.253	10.149.183.253
255	10.149.183.254/32	10.149.183.254 – 10.149.183.254	10.149.183.254
256	10.149.183.255/32	10.149.183.255 – 10.149.183.255	10.149.183.255

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 →