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)10.3.104.0/22

network10.3.104.0/22

broadcast10.3.107.255

first host10.3.104.1

last host10.3.107.254

subnet mask255.255.252.0

wildcard0.0.3.255

addresses1,024

usable hosts1,022

classA

ipcalc 10.3.104.0/22

address00001010.00000011.01101000.00000000

subnet mask11111111.11111111.11111100.00000000

network00001010.00000011.01101000.00000000

broadcast00001010.00000011.01101011.11111111

green = network part, grey = host part

hex0x0a036800

decimal167995392

reverse dns0.104.3.10.in-addr.arpa

ipv4-mapped::ffff:a03:6800

/22 split into /32 · 1,024 subnets

close ×

#	network	host range	broadcast
1	10.3.104.0/32	10.3.104.0 – 10.3.104.0	10.3.104.0
2	10.3.104.1/32	10.3.104.1 – 10.3.104.1	10.3.104.1
3	10.3.104.2/32	10.3.104.2 – 10.3.104.2	10.3.104.2
4	10.3.104.3/32	10.3.104.3 – 10.3.104.3	10.3.104.3
5	10.3.104.4/32	10.3.104.4 – 10.3.104.4	10.3.104.4
6	10.3.104.5/32	10.3.104.5 – 10.3.104.5	10.3.104.5
7	10.3.104.6/32	10.3.104.6 – 10.3.104.6	10.3.104.6
8	10.3.104.7/32	10.3.104.7 – 10.3.104.7	10.3.104.7
9	10.3.104.8/32	10.3.104.8 – 10.3.104.8	10.3.104.8
10	10.3.104.9/32	10.3.104.9 – 10.3.104.9	10.3.104.9
11	10.3.104.10/32	10.3.104.10 – 10.3.104.10	10.3.104.10
12	10.3.104.11/32	10.3.104.11 – 10.3.104.11	10.3.104.11
13	10.3.104.12/32	10.3.104.12 – 10.3.104.12	10.3.104.12
14	10.3.104.13/32	10.3.104.13 – 10.3.104.13	10.3.104.13
15	10.3.104.14/32	10.3.104.14 – 10.3.104.14	10.3.104.14
16	10.3.104.15/32	10.3.104.15 – 10.3.104.15	10.3.104.15
17	10.3.104.16/32	10.3.104.16 – 10.3.104.16	10.3.104.16
18	10.3.104.17/32	10.3.104.17 – 10.3.104.17	10.3.104.17
19	10.3.104.18/32	10.3.104.18 – 10.3.104.18	10.3.104.18
20	10.3.104.19/32	10.3.104.19 – 10.3.104.19	10.3.104.19
21	10.3.104.20/32	10.3.104.20 – 10.3.104.20	10.3.104.20
22	10.3.104.21/32	10.3.104.21 – 10.3.104.21	10.3.104.21
23	10.3.104.22/32	10.3.104.22 – 10.3.104.22	10.3.104.22
24	10.3.104.23/32	10.3.104.23 – 10.3.104.23	10.3.104.23
25	10.3.104.24/32	10.3.104.24 – 10.3.104.24	10.3.104.24
26	10.3.104.25/32	10.3.104.25 – 10.3.104.25	10.3.104.25
27	10.3.104.26/32	10.3.104.26 – 10.3.104.26	10.3.104.26
28	10.3.104.27/32	10.3.104.27 – 10.3.104.27	10.3.104.27
29	10.3.104.28/32	10.3.104.28 – 10.3.104.28	10.3.104.28
30	10.3.104.29/32	10.3.104.29 – 10.3.104.29	10.3.104.29
31	10.3.104.30/32	10.3.104.30 – 10.3.104.30	10.3.104.30
32	10.3.104.31/32	10.3.104.31 – 10.3.104.31	10.3.104.31
33	10.3.104.32/32	10.3.104.32 – 10.3.104.32	10.3.104.32
34	10.3.104.33/32	10.3.104.33 – 10.3.104.33	10.3.104.33
35	10.3.104.34/32	10.3.104.34 – 10.3.104.34	10.3.104.34
36	10.3.104.35/32	10.3.104.35 – 10.3.104.35	10.3.104.35
37	10.3.104.36/32	10.3.104.36 – 10.3.104.36	10.3.104.36
38	10.3.104.37/32	10.3.104.37 – 10.3.104.37	10.3.104.37
39	10.3.104.38/32	10.3.104.38 – 10.3.104.38	10.3.104.38
40	10.3.104.39/32	10.3.104.39 – 10.3.104.39	10.3.104.39
41	10.3.104.40/32	10.3.104.40 – 10.3.104.40	10.3.104.40
42	10.3.104.41/32	10.3.104.41 – 10.3.104.41	10.3.104.41
43	10.3.104.42/32	10.3.104.42 – 10.3.104.42	10.3.104.42
44	10.3.104.43/32	10.3.104.43 – 10.3.104.43	10.3.104.43
45	10.3.104.44/32	10.3.104.44 – 10.3.104.44	10.3.104.44
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47	10.3.104.46/32	10.3.104.46 – 10.3.104.46	10.3.104.46
48	10.3.104.47/32	10.3.104.47 – 10.3.104.47	10.3.104.47
49	10.3.104.48/32	10.3.104.48 – 10.3.104.48	10.3.104.48
50	10.3.104.49/32	10.3.104.49 – 10.3.104.49	10.3.104.49
51	10.3.104.50/32	10.3.104.50 – 10.3.104.50	10.3.104.50
52	10.3.104.51/32	10.3.104.51 – 10.3.104.51	10.3.104.51
53	10.3.104.52/32	10.3.104.52 – 10.3.104.52	10.3.104.52
54	10.3.104.53/32	10.3.104.53 – 10.3.104.53	10.3.104.53
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60	10.3.104.59/32	10.3.104.59 – 10.3.104.59	10.3.104.59
61	10.3.104.60/32	10.3.104.60 – 10.3.104.60	10.3.104.60
62	10.3.104.61/32	10.3.104.61 – 10.3.104.61	10.3.104.61
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64	10.3.104.63/32	10.3.104.63 – 10.3.104.63	10.3.104.63
65	10.3.104.64/32	10.3.104.64 – 10.3.104.64	10.3.104.64
66	10.3.104.65/32	10.3.104.65 – 10.3.104.65	10.3.104.65
67	10.3.104.66/32	10.3.104.66 – 10.3.104.66	10.3.104.66
68	10.3.104.67/32	10.3.104.67 – 10.3.104.67	10.3.104.67
69	10.3.104.68/32	10.3.104.68 – 10.3.104.68	10.3.104.68
70	10.3.104.69/32	10.3.104.69 – 10.3.104.69	10.3.104.69
71	10.3.104.70/32	10.3.104.70 – 10.3.104.70	10.3.104.70
72	10.3.104.71/32	10.3.104.71 – 10.3.104.71	10.3.104.71
73	10.3.104.72/32	10.3.104.72 – 10.3.104.72	10.3.104.72
74	10.3.104.73/32	10.3.104.73 – 10.3.104.73	10.3.104.73
75	10.3.104.74/32	10.3.104.74 – 10.3.104.74	10.3.104.74
76	10.3.104.75/32	10.3.104.75 – 10.3.104.75	10.3.104.75
77	10.3.104.76/32	10.3.104.76 – 10.3.104.76	10.3.104.76
78	10.3.104.77/32	10.3.104.77 – 10.3.104.77	10.3.104.77
79	10.3.104.78/32	10.3.104.78 – 10.3.104.78	10.3.104.78
80	10.3.104.79/32	10.3.104.79 – 10.3.104.79	10.3.104.79
81	10.3.104.80/32	10.3.104.80 – 10.3.104.80	10.3.104.80
82	10.3.104.81/32	10.3.104.81 – 10.3.104.81	10.3.104.81
83	10.3.104.82/32	10.3.104.82 – 10.3.104.82	10.3.104.82
84	10.3.104.83/32	10.3.104.83 – 10.3.104.83	10.3.104.83
85	10.3.104.84/32	10.3.104.84 – 10.3.104.84	10.3.104.84
86	10.3.104.85/32	10.3.104.85 – 10.3.104.85	10.3.104.85
87	10.3.104.86/32	10.3.104.86 – 10.3.104.86	10.3.104.86
88	10.3.104.87/32	10.3.104.87 – 10.3.104.87	10.3.104.87
89	10.3.104.88/32	10.3.104.88 – 10.3.104.88	10.3.104.88
90	10.3.104.89/32	10.3.104.89 – 10.3.104.89	10.3.104.89
91	10.3.104.90/32	10.3.104.90 – 10.3.104.90	10.3.104.90
92	10.3.104.91/32	10.3.104.91 – 10.3.104.91	10.3.104.91
93	10.3.104.92/32	10.3.104.92 – 10.3.104.92	10.3.104.92
94	10.3.104.93/32	10.3.104.93 – 10.3.104.93	10.3.104.93
95	10.3.104.94/32	10.3.104.94 – 10.3.104.94	10.3.104.94
96	10.3.104.95/32	10.3.104.95 – 10.3.104.95	10.3.104.95
97	10.3.104.96/32	10.3.104.96 – 10.3.104.96	10.3.104.96
98	10.3.104.97/32	10.3.104.97 – 10.3.104.97	10.3.104.97
99	10.3.104.98/32	10.3.104.98 – 10.3.104.98	10.3.104.98
100	10.3.104.99/32	10.3.104.99 – 10.3.104.99	10.3.104.99
101	10.3.104.100/32	10.3.104.100 – 10.3.104.100	10.3.104.100
102	10.3.104.101/32	10.3.104.101 – 10.3.104.101	10.3.104.101
103	10.3.104.102/32	10.3.104.102 – 10.3.104.102	10.3.104.102
104	10.3.104.103/32	10.3.104.103 – 10.3.104.103	10.3.104.103
105	10.3.104.104/32	10.3.104.104 – 10.3.104.104	10.3.104.104
106	10.3.104.105/32	10.3.104.105 – 10.3.104.105	10.3.104.105
107	10.3.104.106/32	10.3.104.106 – 10.3.104.106	10.3.104.106
108	10.3.104.107/32	10.3.104.107 – 10.3.104.107	10.3.104.107
109	10.3.104.108/32	10.3.104.108 – 10.3.104.108	10.3.104.108
110	10.3.104.109/32	10.3.104.109 – 10.3.104.109	10.3.104.109
111	10.3.104.110/32	10.3.104.110 – 10.3.104.110	10.3.104.110
112	10.3.104.111/32	10.3.104.111 – 10.3.104.111	10.3.104.111
113	10.3.104.112/32	10.3.104.112 – 10.3.104.112	10.3.104.112
114	10.3.104.113/32	10.3.104.113 – 10.3.104.113	10.3.104.113
115	10.3.104.114/32	10.3.104.114 – 10.3.104.114	10.3.104.114
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128	10.3.104.127/32	10.3.104.127 – 10.3.104.127	10.3.104.127
129	10.3.104.128/32	10.3.104.128 – 10.3.104.128	10.3.104.128
130	10.3.104.129/32	10.3.104.129 – 10.3.104.129	10.3.104.129
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133	10.3.104.132/32	10.3.104.132 – 10.3.104.132	10.3.104.132
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135	10.3.104.134/32	10.3.104.134 – 10.3.104.134	10.3.104.134
136	10.3.104.135/32	10.3.104.135 – 10.3.104.135	10.3.104.135
137	10.3.104.136/32	10.3.104.136 – 10.3.104.136	10.3.104.136
138	10.3.104.137/32	10.3.104.137 – 10.3.104.137	10.3.104.137
139	10.3.104.138/32	10.3.104.138 – 10.3.104.138	10.3.104.138
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142	10.3.104.141/32	10.3.104.141 – 10.3.104.141	10.3.104.141
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146	10.3.104.145/32	10.3.104.145 – 10.3.104.145	10.3.104.145
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210	10.3.104.209/32	10.3.104.209 – 10.3.104.209	10.3.104.209
211	10.3.104.210/32	10.3.104.210 – 10.3.104.210	10.3.104.210
212	10.3.104.211/32	10.3.104.211 – 10.3.104.211	10.3.104.211
213	10.3.104.212/32	10.3.104.212 – 10.3.104.212	10.3.104.212
214	10.3.104.213/32	10.3.104.213 – 10.3.104.213	10.3.104.213
215	10.3.104.214/32	10.3.104.214 – 10.3.104.214	10.3.104.214
216	10.3.104.215/32	10.3.104.215 – 10.3.104.215	10.3.104.215
217	10.3.104.216/32	10.3.104.216 – 10.3.104.216	10.3.104.216
218	10.3.104.217/32	10.3.104.217 – 10.3.104.217	10.3.104.217
219	10.3.104.218/32	10.3.104.218 – 10.3.104.218	10.3.104.218
220	10.3.104.219/32	10.3.104.219 – 10.3.104.219	10.3.104.219
221	10.3.104.220/32	10.3.104.220 – 10.3.104.220	10.3.104.220
222	10.3.104.221/32	10.3.104.221 – 10.3.104.221	10.3.104.221
223	10.3.104.222/32	10.3.104.222 – 10.3.104.222	10.3.104.222
224	10.3.104.223/32	10.3.104.223 – 10.3.104.223	10.3.104.223
225	10.3.104.224/32	10.3.104.224 – 10.3.104.224	10.3.104.224
226	10.3.104.225/32	10.3.104.225 – 10.3.104.225	10.3.104.225
227	10.3.104.226/32	10.3.104.226 – 10.3.104.226	10.3.104.226
228	10.3.104.227/32	10.3.104.227 – 10.3.104.227	10.3.104.227
229	10.3.104.228/32	10.3.104.228 – 10.3.104.228	10.3.104.228
230	10.3.104.229/32	10.3.104.229 – 10.3.104.229	10.3.104.229
231	10.3.104.230/32	10.3.104.230 – 10.3.104.230	10.3.104.230
232	10.3.104.231/32	10.3.104.231 – 10.3.104.231	10.3.104.231
233	10.3.104.232/32	10.3.104.232 – 10.3.104.232	10.3.104.232
234	10.3.104.233/32	10.3.104.233 – 10.3.104.233	10.3.104.233
235	10.3.104.234/32	10.3.104.234 – 10.3.104.234	10.3.104.234
236	10.3.104.235/32	10.3.104.235 – 10.3.104.235	10.3.104.235
237	10.3.104.236/32	10.3.104.236 – 10.3.104.236	10.3.104.236
238	10.3.104.237/32	10.3.104.237 – 10.3.104.237	10.3.104.237
239	10.3.104.238/32	10.3.104.238 – 10.3.104.238	10.3.104.238
240	10.3.104.239/32	10.3.104.239 – 10.3.104.239	10.3.104.239
241	10.3.104.240/32	10.3.104.240 – 10.3.104.240	10.3.104.240
242	10.3.104.241/32	10.3.104.241 – 10.3.104.241	10.3.104.241
243	10.3.104.242/32	10.3.104.242 – 10.3.104.242	10.3.104.242
244	10.3.104.243/32	10.3.104.243 – 10.3.104.243	10.3.104.243
245	10.3.104.244/32	10.3.104.244 – 10.3.104.244	10.3.104.244
246	10.3.104.245/32	10.3.104.245 – 10.3.104.245	10.3.104.245
247	10.3.104.246/32	10.3.104.246 – 10.3.104.246	10.3.104.246
248	10.3.104.247/32	10.3.104.247 – 10.3.104.247	10.3.104.247
249	10.3.104.248/32	10.3.104.248 – 10.3.104.248	10.3.104.248
250	10.3.104.249/32	10.3.104.249 – 10.3.104.249	10.3.104.249
251	10.3.104.250/32	10.3.104.250 – 10.3.104.250	10.3.104.250
252	10.3.104.251/32	10.3.104.251 – 10.3.104.251	10.3.104.251
253	10.3.104.252/32	10.3.104.252 – 10.3.104.252	10.3.104.252
254	10.3.104.253/32	10.3.104.253 – 10.3.104.253	10.3.104.253
255	10.3.104.254/32	10.3.104.254 – 10.3.104.254	10.3.104.254
256	10.3.104.255/32	10.3.104.255 – 10.3.104.255	10.3.104.255

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 →