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)10.76.176.0/24

network10.76.176.0/24

broadcast10.76.176.255

first host10.76.176.1

last host10.76.176.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.76.176.0/24

address00001010.01001100.10110000.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.01001100.10110000.00000000

broadcast00001010.01001100.10110000.11111111

green = network part, grey = host part

hex0x0a4cb000

decimal172797952

reverse dns0.176.76.10.in-addr.arpa

ipv4-mapped::ffff:a4c:b000

/24 split into /31 · 128 subnets

close ×

#	network	host range	broadcast
1	10.76.176.0/31	10.76.176.0 – 10.76.176.1	10.76.176.1
2	10.76.176.2/31	10.76.176.2 – 10.76.176.3	10.76.176.3
3	10.76.176.4/31	10.76.176.4 – 10.76.176.5	10.76.176.5
4	10.76.176.6/31	10.76.176.6 – 10.76.176.7	10.76.176.7
5	10.76.176.8/31	10.76.176.8 – 10.76.176.9	10.76.176.9
6	10.76.176.10/31	10.76.176.10 – 10.76.176.11	10.76.176.11
7	10.76.176.12/31	10.76.176.12 – 10.76.176.13	10.76.176.13
8	10.76.176.14/31	10.76.176.14 – 10.76.176.15	10.76.176.15
9	10.76.176.16/31	10.76.176.16 – 10.76.176.17	10.76.176.17
10	10.76.176.18/31	10.76.176.18 – 10.76.176.19	10.76.176.19
11	10.76.176.20/31	10.76.176.20 – 10.76.176.21	10.76.176.21
12	10.76.176.22/31	10.76.176.22 – 10.76.176.23	10.76.176.23
13	10.76.176.24/31	10.76.176.24 – 10.76.176.25	10.76.176.25
14	10.76.176.26/31	10.76.176.26 – 10.76.176.27	10.76.176.27
15	10.76.176.28/31	10.76.176.28 – 10.76.176.29	10.76.176.29
16	10.76.176.30/31	10.76.176.30 – 10.76.176.31	10.76.176.31
17	10.76.176.32/31	10.76.176.32 – 10.76.176.33	10.76.176.33
18	10.76.176.34/31	10.76.176.34 – 10.76.176.35	10.76.176.35
19	10.76.176.36/31	10.76.176.36 – 10.76.176.37	10.76.176.37
20	10.76.176.38/31	10.76.176.38 – 10.76.176.39	10.76.176.39
21	10.76.176.40/31	10.76.176.40 – 10.76.176.41	10.76.176.41
22	10.76.176.42/31	10.76.176.42 – 10.76.176.43	10.76.176.43
23	10.76.176.44/31	10.76.176.44 – 10.76.176.45	10.76.176.45
24	10.76.176.46/31	10.76.176.46 – 10.76.176.47	10.76.176.47
25	10.76.176.48/31	10.76.176.48 – 10.76.176.49	10.76.176.49
26	10.76.176.50/31	10.76.176.50 – 10.76.176.51	10.76.176.51
27	10.76.176.52/31	10.76.176.52 – 10.76.176.53	10.76.176.53
28	10.76.176.54/31	10.76.176.54 – 10.76.176.55	10.76.176.55
29	10.76.176.56/31	10.76.176.56 – 10.76.176.57	10.76.176.57
30	10.76.176.58/31	10.76.176.58 – 10.76.176.59	10.76.176.59
31	10.76.176.60/31	10.76.176.60 – 10.76.176.61	10.76.176.61
32	10.76.176.62/31	10.76.176.62 – 10.76.176.63	10.76.176.63
33	10.76.176.64/31	10.76.176.64 – 10.76.176.65	10.76.176.65
34	10.76.176.66/31	10.76.176.66 – 10.76.176.67	10.76.176.67
35	10.76.176.68/31	10.76.176.68 – 10.76.176.69	10.76.176.69
36	10.76.176.70/31	10.76.176.70 – 10.76.176.71	10.76.176.71
37	10.76.176.72/31	10.76.176.72 – 10.76.176.73	10.76.176.73
38	10.76.176.74/31	10.76.176.74 – 10.76.176.75	10.76.176.75
39	10.76.176.76/31	10.76.176.76 – 10.76.176.77	10.76.176.77
40	10.76.176.78/31	10.76.176.78 – 10.76.176.79	10.76.176.79
41	10.76.176.80/31	10.76.176.80 – 10.76.176.81	10.76.176.81
42	10.76.176.82/31	10.76.176.82 – 10.76.176.83	10.76.176.83
43	10.76.176.84/31	10.76.176.84 – 10.76.176.85	10.76.176.85
44	10.76.176.86/31	10.76.176.86 – 10.76.176.87	10.76.176.87
45	10.76.176.88/31	10.76.176.88 – 10.76.176.89	10.76.176.89
46	10.76.176.90/31	10.76.176.90 – 10.76.176.91	10.76.176.91
47	10.76.176.92/31	10.76.176.92 – 10.76.176.93	10.76.176.93
48	10.76.176.94/31	10.76.176.94 – 10.76.176.95	10.76.176.95
49	10.76.176.96/31	10.76.176.96 – 10.76.176.97	10.76.176.97
50	10.76.176.98/31	10.76.176.98 – 10.76.176.99	10.76.176.99
51	10.76.176.100/31	10.76.176.100 – 10.76.176.101	10.76.176.101
52	10.76.176.102/31	10.76.176.102 – 10.76.176.103	10.76.176.103
53	10.76.176.104/31	10.76.176.104 – 10.76.176.105	10.76.176.105
54	10.76.176.106/31	10.76.176.106 – 10.76.176.107	10.76.176.107
55	10.76.176.108/31	10.76.176.108 – 10.76.176.109	10.76.176.109
56	10.76.176.110/31	10.76.176.110 – 10.76.176.111	10.76.176.111
57	10.76.176.112/31	10.76.176.112 – 10.76.176.113	10.76.176.113
58	10.76.176.114/31	10.76.176.114 – 10.76.176.115	10.76.176.115
59	10.76.176.116/31	10.76.176.116 – 10.76.176.117	10.76.176.117
60	10.76.176.118/31	10.76.176.118 – 10.76.176.119	10.76.176.119
61	10.76.176.120/31	10.76.176.120 – 10.76.176.121	10.76.176.121
62	10.76.176.122/31	10.76.176.122 – 10.76.176.123	10.76.176.123
63	10.76.176.124/31	10.76.176.124 – 10.76.176.125	10.76.176.125
64	10.76.176.126/31	10.76.176.126 – 10.76.176.127	10.76.176.127
65	10.76.176.128/31	10.76.176.128 – 10.76.176.129	10.76.176.129
66	10.76.176.130/31	10.76.176.130 – 10.76.176.131	10.76.176.131
67	10.76.176.132/31	10.76.176.132 – 10.76.176.133	10.76.176.133
68	10.76.176.134/31	10.76.176.134 – 10.76.176.135	10.76.176.135
69	10.76.176.136/31	10.76.176.136 – 10.76.176.137	10.76.176.137
70	10.76.176.138/31	10.76.176.138 – 10.76.176.139	10.76.176.139
71	10.76.176.140/31	10.76.176.140 – 10.76.176.141	10.76.176.141
72	10.76.176.142/31	10.76.176.142 – 10.76.176.143	10.76.176.143
73	10.76.176.144/31	10.76.176.144 – 10.76.176.145	10.76.176.145
74	10.76.176.146/31	10.76.176.146 – 10.76.176.147	10.76.176.147
75	10.76.176.148/31	10.76.176.148 – 10.76.176.149	10.76.176.149
76	10.76.176.150/31	10.76.176.150 – 10.76.176.151	10.76.176.151
77	10.76.176.152/31	10.76.176.152 – 10.76.176.153	10.76.176.153
78	10.76.176.154/31	10.76.176.154 – 10.76.176.155	10.76.176.155
79	10.76.176.156/31	10.76.176.156 – 10.76.176.157	10.76.176.157
80	10.76.176.158/31	10.76.176.158 – 10.76.176.159	10.76.176.159
81	10.76.176.160/31	10.76.176.160 – 10.76.176.161	10.76.176.161
82	10.76.176.162/31	10.76.176.162 – 10.76.176.163	10.76.176.163
83	10.76.176.164/31	10.76.176.164 – 10.76.176.165	10.76.176.165
84	10.76.176.166/31	10.76.176.166 – 10.76.176.167	10.76.176.167
85	10.76.176.168/31	10.76.176.168 – 10.76.176.169	10.76.176.169
86	10.76.176.170/31	10.76.176.170 – 10.76.176.171	10.76.176.171
87	10.76.176.172/31	10.76.176.172 – 10.76.176.173	10.76.176.173
88	10.76.176.174/31	10.76.176.174 – 10.76.176.175	10.76.176.175
89	10.76.176.176/31	10.76.176.176 – 10.76.176.177	10.76.176.177
90	10.76.176.178/31	10.76.176.178 – 10.76.176.179	10.76.176.179
91	10.76.176.180/31	10.76.176.180 – 10.76.176.181	10.76.176.181
92	10.76.176.182/31	10.76.176.182 – 10.76.176.183	10.76.176.183
93	10.76.176.184/31	10.76.176.184 – 10.76.176.185	10.76.176.185
94	10.76.176.186/31	10.76.176.186 – 10.76.176.187	10.76.176.187
95	10.76.176.188/31	10.76.176.188 – 10.76.176.189	10.76.176.189
96	10.76.176.190/31	10.76.176.190 – 10.76.176.191	10.76.176.191
97	10.76.176.192/31	10.76.176.192 – 10.76.176.193	10.76.176.193
98	10.76.176.194/31	10.76.176.194 – 10.76.176.195	10.76.176.195
99	10.76.176.196/31	10.76.176.196 – 10.76.176.197	10.76.176.197
100	10.76.176.198/31	10.76.176.198 – 10.76.176.199	10.76.176.199
101	10.76.176.200/31	10.76.176.200 – 10.76.176.201	10.76.176.201
102	10.76.176.202/31	10.76.176.202 – 10.76.176.203	10.76.176.203
103	10.76.176.204/31	10.76.176.204 – 10.76.176.205	10.76.176.205
104	10.76.176.206/31	10.76.176.206 – 10.76.176.207	10.76.176.207
105	10.76.176.208/31	10.76.176.208 – 10.76.176.209	10.76.176.209
106	10.76.176.210/31	10.76.176.210 – 10.76.176.211	10.76.176.211
107	10.76.176.212/31	10.76.176.212 – 10.76.176.213	10.76.176.213
108	10.76.176.214/31	10.76.176.214 – 10.76.176.215	10.76.176.215
109	10.76.176.216/31	10.76.176.216 – 10.76.176.217	10.76.176.217
110	10.76.176.218/31	10.76.176.218 – 10.76.176.219	10.76.176.219
111	10.76.176.220/31	10.76.176.220 – 10.76.176.221	10.76.176.221
112	10.76.176.222/31	10.76.176.222 – 10.76.176.223	10.76.176.223
113	10.76.176.224/31	10.76.176.224 – 10.76.176.225	10.76.176.225
114	10.76.176.226/31	10.76.176.226 – 10.76.176.227	10.76.176.227
115	10.76.176.228/31	10.76.176.228 – 10.76.176.229	10.76.176.229
116	10.76.176.230/31	10.76.176.230 – 10.76.176.231	10.76.176.231
117	10.76.176.232/31	10.76.176.232 – 10.76.176.233	10.76.176.233
118	10.76.176.234/31	10.76.176.234 – 10.76.176.235	10.76.176.235
119	10.76.176.236/31	10.76.176.236 – 10.76.176.237	10.76.176.237
120	10.76.176.238/31	10.76.176.238 – 10.76.176.239	10.76.176.239
121	10.76.176.240/31	10.76.176.240 – 10.76.176.241	10.76.176.241
122	10.76.176.242/31	10.76.176.242 – 10.76.176.243	10.76.176.243
123	10.76.176.244/31	10.76.176.244 – 10.76.176.245	10.76.176.245
124	10.76.176.246/31	10.76.176.246 – 10.76.176.247	10.76.176.247
125	10.76.176.248/31	10.76.176.248 – 10.76.176.249	10.76.176.249
126	10.76.176.250/31	10.76.176.250 – 10.76.176.251	10.76.176.251
127	10.76.176.252/31	10.76.176.252 – 10.76.176.253	10.76.176.253
128	10.76.176.254/31	10.76.176.254 – 10.76.176.255	10.76.176.255

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 →