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)10.167.119.0/24

network10.167.119.0/24

broadcast10.167.119.255

first host10.167.119.1

last host10.167.119.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.167.119.0/24

address00001010.10100111.01110111.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.10100111.01110111.00000000

broadcast00001010.10100111.01110111.11111111

green = network part, grey = host part

hex0x0aa77700

decimal178747136

reverse dns0.119.167.10.in-addr.arpa

ipv4-mapped::ffff:aa7:7700

/24 split into /31 · 128 subnets

close ×

#	network	host range	broadcast
1	10.167.119.0/31	10.167.119.0 – 10.167.119.1	10.167.119.1
2	10.167.119.2/31	10.167.119.2 – 10.167.119.3	10.167.119.3
3	10.167.119.4/31	10.167.119.4 – 10.167.119.5	10.167.119.5
4	10.167.119.6/31	10.167.119.6 – 10.167.119.7	10.167.119.7
5	10.167.119.8/31	10.167.119.8 – 10.167.119.9	10.167.119.9
6	10.167.119.10/31	10.167.119.10 – 10.167.119.11	10.167.119.11
7	10.167.119.12/31	10.167.119.12 – 10.167.119.13	10.167.119.13
8	10.167.119.14/31	10.167.119.14 – 10.167.119.15	10.167.119.15
9	10.167.119.16/31	10.167.119.16 – 10.167.119.17	10.167.119.17
10	10.167.119.18/31	10.167.119.18 – 10.167.119.19	10.167.119.19
11	10.167.119.20/31	10.167.119.20 – 10.167.119.21	10.167.119.21
12	10.167.119.22/31	10.167.119.22 – 10.167.119.23	10.167.119.23
13	10.167.119.24/31	10.167.119.24 – 10.167.119.25	10.167.119.25
14	10.167.119.26/31	10.167.119.26 – 10.167.119.27	10.167.119.27
15	10.167.119.28/31	10.167.119.28 – 10.167.119.29	10.167.119.29
16	10.167.119.30/31	10.167.119.30 – 10.167.119.31	10.167.119.31
17	10.167.119.32/31	10.167.119.32 – 10.167.119.33	10.167.119.33
18	10.167.119.34/31	10.167.119.34 – 10.167.119.35	10.167.119.35
19	10.167.119.36/31	10.167.119.36 – 10.167.119.37	10.167.119.37
20	10.167.119.38/31	10.167.119.38 – 10.167.119.39	10.167.119.39
21	10.167.119.40/31	10.167.119.40 – 10.167.119.41	10.167.119.41
22	10.167.119.42/31	10.167.119.42 – 10.167.119.43	10.167.119.43
23	10.167.119.44/31	10.167.119.44 – 10.167.119.45	10.167.119.45
24	10.167.119.46/31	10.167.119.46 – 10.167.119.47	10.167.119.47
25	10.167.119.48/31	10.167.119.48 – 10.167.119.49	10.167.119.49
26	10.167.119.50/31	10.167.119.50 – 10.167.119.51	10.167.119.51
27	10.167.119.52/31	10.167.119.52 – 10.167.119.53	10.167.119.53
28	10.167.119.54/31	10.167.119.54 – 10.167.119.55	10.167.119.55
29	10.167.119.56/31	10.167.119.56 – 10.167.119.57	10.167.119.57
30	10.167.119.58/31	10.167.119.58 – 10.167.119.59	10.167.119.59
31	10.167.119.60/31	10.167.119.60 – 10.167.119.61	10.167.119.61
32	10.167.119.62/31	10.167.119.62 – 10.167.119.63	10.167.119.63
33	10.167.119.64/31	10.167.119.64 – 10.167.119.65	10.167.119.65
34	10.167.119.66/31	10.167.119.66 – 10.167.119.67	10.167.119.67
35	10.167.119.68/31	10.167.119.68 – 10.167.119.69	10.167.119.69
36	10.167.119.70/31	10.167.119.70 – 10.167.119.71	10.167.119.71
37	10.167.119.72/31	10.167.119.72 – 10.167.119.73	10.167.119.73
38	10.167.119.74/31	10.167.119.74 – 10.167.119.75	10.167.119.75
39	10.167.119.76/31	10.167.119.76 – 10.167.119.77	10.167.119.77
40	10.167.119.78/31	10.167.119.78 – 10.167.119.79	10.167.119.79
41	10.167.119.80/31	10.167.119.80 – 10.167.119.81	10.167.119.81
42	10.167.119.82/31	10.167.119.82 – 10.167.119.83	10.167.119.83
43	10.167.119.84/31	10.167.119.84 – 10.167.119.85	10.167.119.85
44	10.167.119.86/31	10.167.119.86 – 10.167.119.87	10.167.119.87
45	10.167.119.88/31	10.167.119.88 – 10.167.119.89	10.167.119.89
46	10.167.119.90/31	10.167.119.90 – 10.167.119.91	10.167.119.91
47	10.167.119.92/31	10.167.119.92 – 10.167.119.93	10.167.119.93
48	10.167.119.94/31	10.167.119.94 – 10.167.119.95	10.167.119.95
49	10.167.119.96/31	10.167.119.96 – 10.167.119.97	10.167.119.97
50	10.167.119.98/31	10.167.119.98 – 10.167.119.99	10.167.119.99
51	10.167.119.100/31	10.167.119.100 – 10.167.119.101	10.167.119.101
52	10.167.119.102/31	10.167.119.102 – 10.167.119.103	10.167.119.103
53	10.167.119.104/31	10.167.119.104 – 10.167.119.105	10.167.119.105
54	10.167.119.106/31	10.167.119.106 – 10.167.119.107	10.167.119.107
55	10.167.119.108/31	10.167.119.108 – 10.167.119.109	10.167.119.109
56	10.167.119.110/31	10.167.119.110 – 10.167.119.111	10.167.119.111
57	10.167.119.112/31	10.167.119.112 – 10.167.119.113	10.167.119.113
58	10.167.119.114/31	10.167.119.114 – 10.167.119.115	10.167.119.115
59	10.167.119.116/31	10.167.119.116 – 10.167.119.117	10.167.119.117
60	10.167.119.118/31	10.167.119.118 – 10.167.119.119	10.167.119.119
61	10.167.119.120/31	10.167.119.120 – 10.167.119.121	10.167.119.121
62	10.167.119.122/31	10.167.119.122 – 10.167.119.123	10.167.119.123
63	10.167.119.124/31	10.167.119.124 – 10.167.119.125	10.167.119.125
64	10.167.119.126/31	10.167.119.126 – 10.167.119.127	10.167.119.127
65	10.167.119.128/31	10.167.119.128 – 10.167.119.129	10.167.119.129
66	10.167.119.130/31	10.167.119.130 – 10.167.119.131	10.167.119.131
67	10.167.119.132/31	10.167.119.132 – 10.167.119.133	10.167.119.133
68	10.167.119.134/31	10.167.119.134 – 10.167.119.135	10.167.119.135
69	10.167.119.136/31	10.167.119.136 – 10.167.119.137	10.167.119.137
70	10.167.119.138/31	10.167.119.138 – 10.167.119.139	10.167.119.139
71	10.167.119.140/31	10.167.119.140 – 10.167.119.141	10.167.119.141
72	10.167.119.142/31	10.167.119.142 – 10.167.119.143	10.167.119.143
73	10.167.119.144/31	10.167.119.144 – 10.167.119.145	10.167.119.145
74	10.167.119.146/31	10.167.119.146 – 10.167.119.147	10.167.119.147
75	10.167.119.148/31	10.167.119.148 – 10.167.119.149	10.167.119.149
76	10.167.119.150/31	10.167.119.150 – 10.167.119.151	10.167.119.151
77	10.167.119.152/31	10.167.119.152 – 10.167.119.153	10.167.119.153
78	10.167.119.154/31	10.167.119.154 – 10.167.119.155	10.167.119.155
79	10.167.119.156/31	10.167.119.156 – 10.167.119.157	10.167.119.157
80	10.167.119.158/31	10.167.119.158 – 10.167.119.159	10.167.119.159
81	10.167.119.160/31	10.167.119.160 – 10.167.119.161	10.167.119.161
82	10.167.119.162/31	10.167.119.162 – 10.167.119.163	10.167.119.163
83	10.167.119.164/31	10.167.119.164 – 10.167.119.165	10.167.119.165
84	10.167.119.166/31	10.167.119.166 – 10.167.119.167	10.167.119.167
85	10.167.119.168/31	10.167.119.168 – 10.167.119.169	10.167.119.169
86	10.167.119.170/31	10.167.119.170 – 10.167.119.171	10.167.119.171
87	10.167.119.172/31	10.167.119.172 – 10.167.119.173	10.167.119.173
88	10.167.119.174/31	10.167.119.174 – 10.167.119.175	10.167.119.175
89	10.167.119.176/31	10.167.119.176 – 10.167.119.177	10.167.119.177
90	10.167.119.178/31	10.167.119.178 – 10.167.119.179	10.167.119.179
91	10.167.119.180/31	10.167.119.180 – 10.167.119.181	10.167.119.181
92	10.167.119.182/31	10.167.119.182 – 10.167.119.183	10.167.119.183
93	10.167.119.184/31	10.167.119.184 – 10.167.119.185	10.167.119.185
94	10.167.119.186/31	10.167.119.186 – 10.167.119.187	10.167.119.187
95	10.167.119.188/31	10.167.119.188 – 10.167.119.189	10.167.119.189
96	10.167.119.190/31	10.167.119.190 – 10.167.119.191	10.167.119.191
97	10.167.119.192/31	10.167.119.192 – 10.167.119.193	10.167.119.193
98	10.167.119.194/31	10.167.119.194 – 10.167.119.195	10.167.119.195
99	10.167.119.196/31	10.167.119.196 – 10.167.119.197	10.167.119.197
100	10.167.119.198/31	10.167.119.198 – 10.167.119.199	10.167.119.199
101	10.167.119.200/31	10.167.119.200 – 10.167.119.201	10.167.119.201
102	10.167.119.202/31	10.167.119.202 – 10.167.119.203	10.167.119.203
103	10.167.119.204/31	10.167.119.204 – 10.167.119.205	10.167.119.205
104	10.167.119.206/31	10.167.119.206 – 10.167.119.207	10.167.119.207
105	10.167.119.208/31	10.167.119.208 – 10.167.119.209	10.167.119.209
106	10.167.119.210/31	10.167.119.210 – 10.167.119.211	10.167.119.211
107	10.167.119.212/31	10.167.119.212 – 10.167.119.213	10.167.119.213
108	10.167.119.214/31	10.167.119.214 – 10.167.119.215	10.167.119.215
109	10.167.119.216/31	10.167.119.216 – 10.167.119.217	10.167.119.217
110	10.167.119.218/31	10.167.119.218 – 10.167.119.219	10.167.119.219
111	10.167.119.220/31	10.167.119.220 – 10.167.119.221	10.167.119.221
112	10.167.119.222/31	10.167.119.222 – 10.167.119.223	10.167.119.223
113	10.167.119.224/31	10.167.119.224 – 10.167.119.225	10.167.119.225
114	10.167.119.226/31	10.167.119.226 – 10.167.119.227	10.167.119.227
115	10.167.119.228/31	10.167.119.228 – 10.167.119.229	10.167.119.229
116	10.167.119.230/31	10.167.119.230 – 10.167.119.231	10.167.119.231
117	10.167.119.232/31	10.167.119.232 – 10.167.119.233	10.167.119.233
118	10.167.119.234/31	10.167.119.234 – 10.167.119.235	10.167.119.235
119	10.167.119.236/31	10.167.119.236 – 10.167.119.237	10.167.119.237
120	10.167.119.238/31	10.167.119.238 – 10.167.119.239	10.167.119.239
121	10.167.119.240/31	10.167.119.240 – 10.167.119.241	10.167.119.241
122	10.167.119.242/31	10.167.119.242 – 10.167.119.243	10.167.119.243
123	10.167.119.244/31	10.167.119.244 – 10.167.119.245	10.167.119.245
124	10.167.119.246/31	10.167.119.246 – 10.167.119.247	10.167.119.247
125	10.167.119.248/31	10.167.119.248 – 10.167.119.249	10.167.119.249
126	10.167.119.250/31	10.167.119.250 – 10.167.119.251	10.167.119.251
127	10.167.119.252/31	10.167.119.252 – 10.167.119.253	10.167.119.253
128	10.167.119.254/31	10.167.119.254 – 10.167.119.255	10.167.119.255

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 →