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)10.149.141.0/24

network10.149.141.0/24

broadcast10.149.141.255

first host10.149.141.1

last host10.149.141.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.149.141.0/24

address00001010.10010101.10001101.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.10010101.10001101.00000000

broadcast00001010.10010101.10001101.11111111

green = network part, grey = host part

hex0x0a958d00

decimal177573120

reverse dns0.141.149.10.in-addr.arpa

ipv4-mapped::ffff:a95:8d00

/24 split into /32 · 256 subnets

close ×

#	network	host range	broadcast
1	10.149.141.0/32	10.149.141.0 – 10.149.141.0	10.149.141.0
2	10.149.141.1/32	10.149.141.1 – 10.149.141.1	10.149.141.1
3	10.149.141.2/32	10.149.141.2 – 10.149.141.2	10.149.141.2
4	10.149.141.3/32	10.149.141.3 – 10.149.141.3	10.149.141.3
5	10.149.141.4/32	10.149.141.4 – 10.149.141.4	10.149.141.4
6	10.149.141.5/32	10.149.141.5 – 10.149.141.5	10.149.141.5
7	10.149.141.6/32	10.149.141.6 – 10.149.141.6	10.149.141.6
8	10.149.141.7/32	10.149.141.7 – 10.149.141.7	10.149.141.7
9	10.149.141.8/32	10.149.141.8 – 10.149.141.8	10.149.141.8
10	10.149.141.9/32	10.149.141.9 – 10.149.141.9	10.149.141.9
11	10.149.141.10/32	10.149.141.10 – 10.149.141.10	10.149.141.10
12	10.149.141.11/32	10.149.141.11 – 10.149.141.11	10.149.141.11
13	10.149.141.12/32	10.149.141.12 – 10.149.141.12	10.149.141.12
14	10.149.141.13/32	10.149.141.13 – 10.149.141.13	10.149.141.13
15	10.149.141.14/32	10.149.141.14 – 10.149.141.14	10.149.141.14
16	10.149.141.15/32	10.149.141.15 – 10.149.141.15	10.149.141.15
17	10.149.141.16/32	10.149.141.16 – 10.149.141.16	10.149.141.16
18	10.149.141.17/32	10.149.141.17 – 10.149.141.17	10.149.141.17
19	10.149.141.18/32	10.149.141.18 – 10.149.141.18	10.149.141.18
20	10.149.141.19/32	10.149.141.19 – 10.149.141.19	10.149.141.19
21	10.149.141.20/32	10.149.141.20 – 10.149.141.20	10.149.141.20
22	10.149.141.21/32	10.149.141.21 – 10.149.141.21	10.149.141.21
23	10.149.141.22/32	10.149.141.22 – 10.149.141.22	10.149.141.22
24	10.149.141.23/32	10.149.141.23 – 10.149.141.23	10.149.141.23
25	10.149.141.24/32	10.149.141.24 – 10.149.141.24	10.149.141.24
26	10.149.141.25/32	10.149.141.25 – 10.149.141.25	10.149.141.25
27	10.149.141.26/32	10.149.141.26 – 10.149.141.26	10.149.141.26
28	10.149.141.27/32	10.149.141.27 – 10.149.141.27	10.149.141.27
29	10.149.141.28/32	10.149.141.28 – 10.149.141.28	10.149.141.28
30	10.149.141.29/32	10.149.141.29 – 10.149.141.29	10.149.141.29
31	10.149.141.30/32	10.149.141.30 – 10.149.141.30	10.149.141.30
32	10.149.141.31/32	10.149.141.31 – 10.149.141.31	10.149.141.31
33	10.149.141.32/32	10.149.141.32 – 10.149.141.32	10.149.141.32
34	10.149.141.33/32	10.149.141.33 – 10.149.141.33	10.149.141.33
35	10.149.141.34/32	10.149.141.34 – 10.149.141.34	10.149.141.34
36	10.149.141.35/32	10.149.141.35 – 10.149.141.35	10.149.141.35
37	10.149.141.36/32	10.149.141.36 – 10.149.141.36	10.149.141.36
38	10.149.141.37/32	10.149.141.37 – 10.149.141.37	10.149.141.37
39	10.149.141.38/32	10.149.141.38 – 10.149.141.38	10.149.141.38
40	10.149.141.39/32	10.149.141.39 – 10.149.141.39	10.149.141.39
41	10.149.141.40/32	10.149.141.40 – 10.149.141.40	10.149.141.40
42	10.149.141.41/32	10.149.141.41 – 10.149.141.41	10.149.141.41
43	10.149.141.42/32	10.149.141.42 – 10.149.141.42	10.149.141.42
44	10.149.141.43/32	10.149.141.43 – 10.149.141.43	10.149.141.43
45	10.149.141.44/32	10.149.141.44 – 10.149.141.44	10.149.141.44
46	10.149.141.45/32	10.149.141.45 – 10.149.141.45	10.149.141.45
47	10.149.141.46/32	10.149.141.46 – 10.149.141.46	10.149.141.46
48	10.149.141.47/32	10.149.141.47 – 10.149.141.47	10.149.141.47
49	10.149.141.48/32	10.149.141.48 – 10.149.141.48	10.149.141.48
50	10.149.141.49/32	10.149.141.49 – 10.149.141.49	10.149.141.49
51	10.149.141.50/32	10.149.141.50 – 10.149.141.50	10.149.141.50
52	10.149.141.51/32	10.149.141.51 – 10.149.141.51	10.149.141.51
53	10.149.141.52/32	10.149.141.52 – 10.149.141.52	10.149.141.52
54	10.149.141.53/32	10.149.141.53 – 10.149.141.53	10.149.141.53
55	10.149.141.54/32	10.149.141.54 – 10.149.141.54	10.149.141.54
56	10.149.141.55/32	10.149.141.55 – 10.149.141.55	10.149.141.55
57	10.149.141.56/32	10.149.141.56 – 10.149.141.56	10.149.141.56
58	10.149.141.57/32	10.149.141.57 – 10.149.141.57	10.149.141.57
59	10.149.141.58/32	10.149.141.58 – 10.149.141.58	10.149.141.58
60	10.149.141.59/32	10.149.141.59 – 10.149.141.59	10.149.141.59
61	10.149.141.60/32	10.149.141.60 – 10.149.141.60	10.149.141.60
62	10.149.141.61/32	10.149.141.61 – 10.149.141.61	10.149.141.61
63	10.149.141.62/32	10.149.141.62 – 10.149.141.62	10.149.141.62
64	10.149.141.63/32	10.149.141.63 – 10.149.141.63	10.149.141.63
65	10.149.141.64/32	10.149.141.64 – 10.149.141.64	10.149.141.64
66	10.149.141.65/32	10.149.141.65 – 10.149.141.65	10.149.141.65
67	10.149.141.66/32	10.149.141.66 – 10.149.141.66	10.149.141.66
68	10.149.141.67/32	10.149.141.67 – 10.149.141.67	10.149.141.67
69	10.149.141.68/32	10.149.141.68 – 10.149.141.68	10.149.141.68
70	10.149.141.69/32	10.149.141.69 – 10.149.141.69	10.149.141.69
71	10.149.141.70/32	10.149.141.70 – 10.149.141.70	10.149.141.70
72	10.149.141.71/32	10.149.141.71 – 10.149.141.71	10.149.141.71
73	10.149.141.72/32	10.149.141.72 – 10.149.141.72	10.149.141.72
74	10.149.141.73/32	10.149.141.73 – 10.149.141.73	10.149.141.73
75	10.149.141.74/32	10.149.141.74 – 10.149.141.74	10.149.141.74
76	10.149.141.75/32	10.149.141.75 – 10.149.141.75	10.149.141.75
77	10.149.141.76/32	10.149.141.76 – 10.149.141.76	10.149.141.76
78	10.149.141.77/32	10.149.141.77 – 10.149.141.77	10.149.141.77
79	10.149.141.78/32	10.149.141.78 – 10.149.141.78	10.149.141.78
80	10.149.141.79/32	10.149.141.79 – 10.149.141.79	10.149.141.79
81	10.149.141.80/32	10.149.141.80 – 10.149.141.80	10.149.141.80
82	10.149.141.81/32	10.149.141.81 – 10.149.141.81	10.149.141.81
83	10.149.141.82/32	10.149.141.82 – 10.149.141.82	10.149.141.82
84	10.149.141.83/32	10.149.141.83 – 10.149.141.83	10.149.141.83
85	10.149.141.84/32	10.149.141.84 – 10.149.141.84	10.149.141.84
86	10.149.141.85/32	10.149.141.85 – 10.149.141.85	10.149.141.85
87	10.149.141.86/32	10.149.141.86 – 10.149.141.86	10.149.141.86
88	10.149.141.87/32	10.149.141.87 – 10.149.141.87	10.149.141.87
89	10.149.141.88/32	10.149.141.88 – 10.149.141.88	10.149.141.88
90	10.149.141.89/32	10.149.141.89 – 10.149.141.89	10.149.141.89
91	10.149.141.90/32	10.149.141.90 – 10.149.141.90	10.149.141.90
92	10.149.141.91/32	10.149.141.91 – 10.149.141.91	10.149.141.91
93	10.149.141.92/32	10.149.141.92 – 10.149.141.92	10.149.141.92
94	10.149.141.93/32	10.149.141.93 – 10.149.141.93	10.149.141.93
95	10.149.141.94/32	10.149.141.94 – 10.149.141.94	10.149.141.94
96	10.149.141.95/32	10.149.141.95 – 10.149.141.95	10.149.141.95
97	10.149.141.96/32	10.149.141.96 – 10.149.141.96	10.149.141.96
98	10.149.141.97/32	10.149.141.97 – 10.149.141.97	10.149.141.97
99	10.149.141.98/32	10.149.141.98 – 10.149.141.98	10.149.141.98
100	10.149.141.99/32	10.149.141.99 – 10.149.141.99	10.149.141.99
101	10.149.141.100/32	10.149.141.100 – 10.149.141.100	10.149.141.100
102	10.149.141.101/32	10.149.141.101 – 10.149.141.101	10.149.141.101
103	10.149.141.102/32	10.149.141.102 – 10.149.141.102	10.149.141.102
104	10.149.141.103/32	10.149.141.103 – 10.149.141.103	10.149.141.103
105	10.149.141.104/32	10.149.141.104 – 10.149.141.104	10.149.141.104
106	10.149.141.105/32	10.149.141.105 – 10.149.141.105	10.149.141.105
107	10.149.141.106/32	10.149.141.106 – 10.149.141.106	10.149.141.106
108	10.149.141.107/32	10.149.141.107 – 10.149.141.107	10.149.141.107
109	10.149.141.108/32	10.149.141.108 – 10.149.141.108	10.149.141.108
110	10.149.141.109/32	10.149.141.109 – 10.149.141.109	10.149.141.109
111	10.149.141.110/32	10.149.141.110 – 10.149.141.110	10.149.141.110
112	10.149.141.111/32	10.149.141.111 – 10.149.141.111	10.149.141.111
113	10.149.141.112/32	10.149.141.112 – 10.149.141.112	10.149.141.112
114	10.149.141.113/32	10.149.141.113 – 10.149.141.113	10.149.141.113
115	10.149.141.114/32	10.149.141.114 – 10.149.141.114	10.149.141.114
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128	10.149.141.127/32	10.149.141.127 – 10.149.141.127	10.149.141.127
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136	10.149.141.135/32	10.149.141.135 – 10.149.141.135	10.149.141.135
137	10.149.141.136/32	10.149.141.136 – 10.149.141.136	10.149.141.136
138	10.149.141.137/32	10.149.141.137 – 10.149.141.137	10.149.141.137
139	10.149.141.138/32	10.149.141.138 – 10.149.141.138	10.149.141.138
140	10.149.141.139/32	10.149.141.139 – 10.149.141.139	10.149.141.139
141	10.149.141.140/32	10.149.141.140 – 10.149.141.140	10.149.141.140
142	10.149.141.141/32	10.149.141.141 – 10.149.141.141	10.149.141.141
143	10.149.141.142/32	10.149.141.142 – 10.149.141.142	10.149.141.142
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146	10.149.141.145/32	10.149.141.145 – 10.149.141.145	10.149.141.145
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149	10.149.141.148/32	10.149.141.148 – 10.149.141.148	10.149.141.148
150	10.149.141.149/32	10.149.141.149 – 10.149.141.149	10.149.141.149
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210	10.149.141.209/32	10.149.141.209 – 10.149.141.209	10.149.141.209
211	10.149.141.210/32	10.149.141.210 – 10.149.141.210	10.149.141.210
212	10.149.141.211/32	10.149.141.211 – 10.149.141.211	10.149.141.211
213	10.149.141.212/32	10.149.141.212 – 10.149.141.212	10.149.141.212
214	10.149.141.213/32	10.149.141.213 – 10.149.141.213	10.149.141.213
215	10.149.141.214/32	10.149.141.214 – 10.149.141.214	10.149.141.214
216	10.149.141.215/32	10.149.141.215 – 10.149.141.215	10.149.141.215
217	10.149.141.216/32	10.149.141.216 – 10.149.141.216	10.149.141.216
218	10.149.141.217/32	10.149.141.217 – 10.149.141.217	10.149.141.217
219	10.149.141.218/32	10.149.141.218 – 10.149.141.218	10.149.141.218
220	10.149.141.219/32	10.149.141.219 – 10.149.141.219	10.149.141.219
221	10.149.141.220/32	10.149.141.220 – 10.149.141.220	10.149.141.220
222	10.149.141.221/32	10.149.141.221 – 10.149.141.221	10.149.141.221
223	10.149.141.222/32	10.149.141.222 – 10.149.141.222	10.149.141.222
224	10.149.141.223/32	10.149.141.223 – 10.149.141.223	10.149.141.223
225	10.149.141.224/32	10.149.141.224 – 10.149.141.224	10.149.141.224
226	10.149.141.225/32	10.149.141.225 – 10.149.141.225	10.149.141.225
227	10.149.141.226/32	10.149.141.226 – 10.149.141.226	10.149.141.226
228	10.149.141.227/32	10.149.141.227 – 10.149.141.227	10.149.141.227
229	10.149.141.228/32	10.149.141.228 – 10.149.141.228	10.149.141.228
230	10.149.141.229/32	10.149.141.229 – 10.149.141.229	10.149.141.229
231	10.149.141.230/32	10.149.141.230 – 10.149.141.230	10.149.141.230
232	10.149.141.231/32	10.149.141.231 – 10.149.141.231	10.149.141.231
233	10.149.141.232/32	10.149.141.232 – 10.149.141.232	10.149.141.232
234	10.149.141.233/32	10.149.141.233 – 10.149.141.233	10.149.141.233
235	10.149.141.234/32	10.149.141.234 – 10.149.141.234	10.149.141.234
236	10.149.141.235/32	10.149.141.235 – 10.149.141.235	10.149.141.235
237	10.149.141.236/32	10.149.141.236 – 10.149.141.236	10.149.141.236
238	10.149.141.237/32	10.149.141.237 – 10.149.141.237	10.149.141.237
239	10.149.141.238/32	10.149.141.238 – 10.149.141.238	10.149.141.238
240	10.149.141.239/32	10.149.141.239 – 10.149.141.239	10.149.141.239
241	10.149.141.240/32	10.149.141.240 – 10.149.141.240	10.149.141.240
242	10.149.141.241/32	10.149.141.241 – 10.149.141.241	10.149.141.241
243	10.149.141.242/32	10.149.141.242 – 10.149.141.242	10.149.141.242
244	10.149.141.243/32	10.149.141.243 – 10.149.141.243	10.149.141.243
245	10.149.141.244/32	10.149.141.244 – 10.149.141.244	10.149.141.244
246	10.149.141.245/32	10.149.141.245 – 10.149.141.245	10.149.141.245
247	10.149.141.246/32	10.149.141.246 – 10.149.141.246	10.149.141.246
248	10.149.141.247/32	10.149.141.247 – 10.149.141.247	10.149.141.247
249	10.149.141.248/32	10.149.141.248 – 10.149.141.248	10.149.141.248
250	10.149.141.249/32	10.149.141.249 – 10.149.141.249	10.149.141.249
251	10.149.141.250/32	10.149.141.250 – 10.149.141.250	10.149.141.250
252	10.149.141.251/32	10.149.141.251 – 10.149.141.251	10.149.141.251
253	10.149.141.252/32	10.149.141.252 – 10.149.141.252	10.149.141.252
254	10.149.141.253/32	10.149.141.253 – 10.149.141.253	10.149.141.253
255	10.149.141.254/32	10.149.141.254 – 10.149.141.254	10.149.141.254
256	10.149.141.255/32	10.149.141.255 – 10.149.141.255	10.149.141.255

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 →