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)10.0.184.0/24

network10.0.184.0/24

broadcast10.0.184.255

first host10.0.184.1

last host10.0.184.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.0.184.0/24

address00001010.00000000.10111000.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.00000000.10111000.00000000

broadcast00001010.00000000.10111000.11111111

green = network part, grey = host part

hex0x0a00b800

decimal167819264

reverse dns0.184.0.10.in-addr.arpa

ipv4-mapped::ffff:a00:b800

/24 split into /31 · 128 subnets

close ×

#	network	host range	broadcast
1	10.0.184.0/31	10.0.184.0 – 10.0.184.1	10.0.184.1
2	10.0.184.2/31	10.0.184.2 – 10.0.184.3	10.0.184.3
3	10.0.184.4/31	10.0.184.4 – 10.0.184.5	10.0.184.5
4	10.0.184.6/31	10.0.184.6 – 10.0.184.7	10.0.184.7
5	10.0.184.8/31	10.0.184.8 – 10.0.184.9	10.0.184.9
6	10.0.184.10/31	10.0.184.10 – 10.0.184.11	10.0.184.11
7	10.0.184.12/31	10.0.184.12 – 10.0.184.13	10.0.184.13
8	10.0.184.14/31	10.0.184.14 – 10.0.184.15	10.0.184.15
9	10.0.184.16/31	10.0.184.16 – 10.0.184.17	10.0.184.17
10	10.0.184.18/31	10.0.184.18 – 10.0.184.19	10.0.184.19
11	10.0.184.20/31	10.0.184.20 – 10.0.184.21	10.0.184.21
12	10.0.184.22/31	10.0.184.22 – 10.0.184.23	10.0.184.23
13	10.0.184.24/31	10.0.184.24 – 10.0.184.25	10.0.184.25
14	10.0.184.26/31	10.0.184.26 – 10.0.184.27	10.0.184.27
15	10.0.184.28/31	10.0.184.28 – 10.0.184.29	10.0.184.29
16	10.0.184.30/31	10.0.184.30 – 10.0.184.31	10.0.184.31
17	10.0.184.32/31	10.0.184.32 – 10.0.184.33	10.0.184.33
18	10.0.184.34/31	10.0.184.34 – 10.0.184.35	10.0.184.35
19	10.0.184.36/31	10.0.184.36 – 10.0.184.37	10.0.184.37
20	10.0.184.38/31	10.0.184.38 – 10.0.184.39	10.0.184.39
21	10.0.184.40/31	10.0.184.40 – 10.0.184.41	10.0.184.41
22	10.0.184.42/31	10.0.184.42 – 10.0.184.43	10.0.184.43
23	10.0.184.44/31	10.0.184.44 – 10.0.184.45	10.0.184.45
24	10.0.184.46/31	10.0.184.46 – 10.0.184.47	10.0.184.47
25	10.0.184.48/31	10.0.184.48 – 10.0.184.49	10.0.184.49
26	10.0.184.50/31	10.0.184.50 – 10.0.184.51	10.0.184.51
27	10.0.184.52/31	10.0.184.52 – 10.0.184.53	10.0.184.53
28	10.0.184.54/31	10.0.184.54 – 10.0.184.55	10.0.184.55
29	10.0.184.56/31	10.0.184.56 – 10.0.184.57	10.0.184.57
30	10.0.184.58/31	10.0.184.58 – 10.0.184.59	10.0.184.59
31	10.0.184.60/31	10.0.184.60 – 10.0.184.61	10.0.184.61
32	10.0.184.62/31	10.0.184.62 – 10.0.184.63	10.0.184.63
33	10.0.184.64/31	10.0.184.64 – 10.0.184.65	10.0.184.65
34	10.0.184.66/31	10.0.184.66 – 10.0.184.67	10.0.184.67
35	10.0.184.68/31	10.0.184.68 – 10.0.184.69	10.0.184.69
36	10.0.184.70/31	10.0.184.70 – 10.0.184.71	10.0.184.71
37	10.0.184.72/31	10.0.184.72 – 10.0.184.73	10.0.184.73
38	10.0.184.74/31	10.0.184.74 – 10.0.184.75	10.0.184.75
39	10.0.184.76/31	10.0.184.76 – 10.0.184.77	10.0.184.77
40	10.0.184.78/31	10.0.184.78 – 10.0.184.79	10.0.184.79
41	10.0.184.80/31	10.0.184.80 – 10.0.184.81	10.0.184.81
42	10.0.184.82/31	10.0.184.82 – 10.0.184.83	10.0.184.83
43	10.0.184.84/31	10.0.184.84 – 10.0.184.85	10.0.184.85
44	10.0.184.86/31	10.0.184.86 – 10.0.184.87	10.0.184.87
45	10.0.184.88/31	10.0.184.88 – 10.0.184.89	10.0.184.89
46	10.0.184.90/31	10.0.184.90 – 10.0.184.91	10.0.184.91
47	10.0.184.92/31	10.0.184.92 – 10.0.184.93	10.0.184.93
48	10.0.184.94/31	10.0.184.94 – 10.0.184.95	10.0.184.95
49	10.0.184.96/31	10.0.184.96 – 10.0.184.97	10.0.184.97
50	10.0.184.98/31	10.0.184.98 – 10.0.184.99	10.0.184.99
51	10.0.184.100/31	10.0.184.100 – 10.0.184.101	10.0.184.101
52	10.0.184.102/31	10.0.184.102 – 10.0.184.103	10.0.184.103
53	10.0.184.104/31	10.0.184.104 – 10.0.184.105	10.0.184.105
54	10.0.184.106/31	10.0.184.106 – 10.0.184.107	10.0.184.107
55	10.0.184.108/31	10.0.184.108 – 10.0.184.109	10.0.184.109
56	10.0.184.110/31	10.0.184.110 – 10.0.184.111	10.0.184.111
57	10.0.184.112/31	10.0.184.112 – 10.0.184.113	10.0.184.113
58	10.0.184.114/31	10.0.184.114 – 10.0.184.115	10.0.184.115
59	10.0.184.116/31	10.0.184.116 – 10.0.184.117	10.0.184.117
60	10.0.184.118/31	10.0.184.118 – 10.0.184.119	10.0.184.119
61	10.0.184.120/31	10.0.184.120 – 10.0.184.121	10.0.184.121
62	10.0.184.122/31	10.0.184.122 – 10.0.184.123	10.0.184.123
63	10.0.184.124/31	10.0.184.124 – 10.0.184.125	10.0.184.125
64	10.0.184.126/31	10.0.184.126 – 10.0.184.127	10.0.184.127
65	10.0.184.128/31	10.0.184.128 – 10.0.184.129	10.0.184.129
66	10.0.184.130/31	10.0.184.130 – 10.0.184.131	10.0.184.131
67	10.0.184.132/31	10.0.184.132 – 10.0.184.133	10.0.184.133
68	10.0.184.134/31	10.0.184.134 – 10.0.184.135	10.0.184.135
69	10.0.184.136/31	10.0.184.136 – 10.0.184.137	10.0.184.137
70	10.0.184.138/31	10.0.184.138 – 10.0.184.139	10.0.184.139
71	10.0.184.140/31	10.0.184.140 – 10.0.184.141	10.0.184.141
72	10.0.184.142/31	10.0.184.142 – 10.0.184.143	10.0.184.143
73	10.0.184.144/31	10.0.184.144 – 10.0.184.145	10.0.184.145
74	10.0.184.146/31	10.0.184.146 – 10.0.184.147	10.0.184.147
75	10.0.184.148/31	10.0.184.148 – 10.0.184.149	10.0.184.149
76	10.0.184.150/31	10.0.184.150 – 10.0.184.151	10.0.184.151
77	10.0.184.152/31	10.0.184.152 – 10.0.184.153	10.0.184.153
78	10.0.184.154/31	10.0.184.154 – 10.0.184.155	10.0.184.155
79	10.0.184.156/31	10.0.184.156 – 10.0.184.157	10.0.184.157
80	10.0.184.158/31	10.0.184.158 – 10.0.184.159	10.0.184.159
81	10.0.184.160/31	10.0.184.160 – 10.0.184.161	10.0.184.161
82	10.0.184.162/31	10.0.184.162 – 10.0.184.163	10.0.184.163
83	10.0.184.164/31	10.0.184.164 – 10.0.184.165	10.0.184.165
84	10.0.184.166/31	10.0.184.166 – 10.0.184.167	10.0.184.167
85	10.0.184.168/31	10.0.184.168 – 10.0.184.169	10.0.184.169
86	10.0.184.170/31	10.0.184.170 – 10.0.184.171	10.0.184.171
87	10.0.184.172/31	10.0.184.172 – 10.0.184.173	10.0.184.173
88	10.0.184.174/31	10.0.184.174 – 10.0.184.175	10.0.184.175
89	10.0.184.176/31	10.0.184.176 – 10.0.184.177	10.0.184.177
90	10.0.184.178/31	10.0.184.178 – 10.0.184.179	10.0.184.179
91	10.0.184.180/31	10.0.184.180 – 10.0.184.181	10.0.184.181
92	10.0.184.182/31	10.0.184.182 – 10.0.184.183	10.0.184.183
93	10.0.184.184/31	10.0.184.184 – 10.0.184.185	10.0.184.185
94	10.0.184.186/31	10.0.184.186 – 10.0.184.187	10.0.184.187
95	10.0.184.188/31	10.0.184.188 – 10.0.184.189	10.0.184.189
96	10.0.184.190/31	10.0.184.190 – 10.0.184.191	10.0.184.191
97	10.0.184.192/31	10.0.184.192 – 10.0.184.193	10.0.184.193
98	10.0.184.194/31	10.0.184.194 – 10.0.184.195	10.0.184.195
99	10.0.184.196/31	10.0.184.196 – 10.0.184.197	10.0.184.197
100	10.0.184.198/31	10.0.184.198 – 10.0.184.199	10.0.184.199
101	10.0.184.200/31	10.0.184.200 – 10.0.184.201	10.0.184.201
102	10.0.184.202/31	10.0.184.202 – 10.0.184.203	10.0.184.203
103	10.0.184.204/31	10.0.184.204 – 10.0.184.205	10.0.184.205
104	10.0.184.206/31	10.0.184.206 – 10.0.184.207	10.0.184.207
105	10.0.184.208/31	10.0.184.208 – 10.0.184.209	10.0.184.209
106	10.0.184.210/31	10.0.184.210 – 10.0.184.211	10.0.184.211
107	10.0.184.212/31	10.0.184.212 – 10.0.184.213	10.0.184.213
108	10.0.184.214/31	10.0.184.214 – 10.0.184.215	10.0.184.215
109	10.0.184.216/31	10.0.184.216 – 10.0.184.217	10.0.184.217
110	10.0.184.218/31	10.0.184.218 – 10.0.184.219	10.0.184.219
111	10.0.184.220/31	10.0.184.220 – 10.0.184.221	10.0.184.221
112	10.0.184.222/31	10.0.184.222 – 10.0.184.223	10.0.184.223
113	10.0.184.224/31	10.0.184.224 – 10.0.184.225	10.0.184.225
114	10.0.184.226/31	10.0.184.226 – 10.0.184.227	10.0.184.227
115	10.0.184.228/31	10.0.184.228 – 10.0.184.229	10.0.184.229
116	10.0.184.230/31	10.0.184.230 – 10.0.184.231	10.0.184.231
117	10.0.184.232/31	10.0.184.232 – 10.0.184.233	10.0.184.233
118	10.0.184.234/31	10.0.184.234 – 10.0.184.235	10.0.184.235
119	10.0.184.236/31	10.0.184.236 – 10.0.184.237	10.0.184.237
120	10.0.184.238/31	10.0.184.238 – 10.0.184.239	10.0.184.239
121	10.0.184.240/31	10.0.184.240 – 10.0.184.241	10.0.184.241
122	10.0.184.242/31	10.0.184.242 – 10.0.184.243	10.0.184.243
123	10.0.184.244/31	10.0.184.244 – 10.0.184.245	10.0.184.245
124	10.0.184.246/31	10.0.184.246 – 10.0.184.247	10.0.184.247
125	10.0.184.248/31	10.0.184.248 – 10.0.184.249	10.0.184.249
126	10.0.184.250/31	10.0.184.250 – 10.0.184.251	10.0.184.251
127	10.0.184.252/31	10.0.184.252 – 10.0.184.253	10.0.184.253
128	10.0.184.254/31	10.0.184.254 – 10.0.184.255	10.0.184.255

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 →