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)10.0.224.0/24

network10.0.224.0/24

broadcast10.0.224.255

first host10.0.224.1

last host10.0.224.254

subnet mask255.255.255.0

wildcard0.0.0.255

addresses256

usable hosts254

classA

ipcalc 10.0.224.0/24

address00001010.00000000.11100000.00000000

subnet mask11111111.11111111.11111111.00000000

network00001010.00000000.11100000.00000000

broadcast00001010.00000000.11100000.11111111

green = network part, grey = host part

hex0x0a00e000

decimal167829504

reverse dns0.224.0.10.in-addr.arpa

ipv4-mapped::ffff:a00:e000

/24 split into /31 · 128 subnets

close ×

#	network	host range	broadcast
1	10.0.224.0/31	10.0.224.0 – 10.0.224.1	10.0.224.1
2	10.0.224.2/31	10.0.224.2 – 10.0.224.3	10.0.224.3
3	10.0.224.4/31	10.0.224.4 – 10.0.224.5	10.0.224.5
4	10.0.224.6/31	10.0.224.6 – 10.0.224.7	10.0.224.7
5	10.0.224.8/31	10.0.224.8 – 10.0.224.9	10.0.224.9
6	10.0.224.10/31	10.0.224.10 – 10.0.224.11	10.0.224.11
7	10.0.224.12/31	10.0.224.12 – 10.0.224.13	10.0.224.13
8	10.0.224.14/31	10.0.224.14 – 10.0.224.15	10.0.224.15
9	10.0.224.16/31	10.0.224.16 – 10.0.224.17	10.0.224.17
10	10.0.224.18/31	10.0.224.18 – 10.0.224.19	10.0.224.19
11	10.0.224.20/31	10.0.224.20 – 10.0.224.21	10.0.224.21
12	10.0.224.22/31	10.0.224.22 – 10.0.224.23	10.0.224.23
13	10.0.224.24/31	10.0.224.24 – 10.0.224.25	10.0.224.25
14	10.0.224.26/31	10.0.224.26 – 10.0.224.27	10.0.224.27
15	10.0.224.28/31	10.0.224.28 – 10.0.224.29	10.0.224.29
16	10.0.224.30/31	10.0.224.30 – 10.0.224.31	10.0.224.31
17	10.0.224.32/31	10.0.224.32 – 10.0.224.33	10.0.224.33
18	10.0.224.34/31	10.0.224.34 – 10.0.224.35	10.0.224.35
19	10.0.224.36/31	10.0.224.36 – 10.0.224.37	10.0.224.37
20	10.0.224.38/31	10.0.224.38 – 10.0.224.39	10.0.224.39
21	10.0.224.40/31	10.0.224.40 – 10.0.224.41	10.0.224.41
22	10.0.224.42/31	10.0.224.42 – 10.0.224.43	10.0.224.43
23	10.0.224.44/31	10.0.224.44 – 10.0.224.45	10.0.224.45
24	10.0.224.46/31	10.0.224.46 – 10.0.224.47	10.0.224.47
25	10.0.224.48/31	10.0.224.48 – 10.0.224.49	10.0.224.49
26	10.0.224.50/31	10.0.224.50 – 10.0.224.51	10.0.224.51
27	10.0.224.52/31	10.0.224.52 – 10.0.224.53	10.0.224.53
28	10.0.224.54/31	10.0.224.54 – 10.0.224.55	10.0.224.55
29	10.0.224.56/31	10.0.224.56 – 10.0.224.57	10.0.224.57
30	10.0.224.58/31	10.0.224.58 – 10.0.224.59	10.0.224.59
31	10.0.224.60/31	10.0.224.60 – 10.0.224.61	10.0.224.61
32	10.0.224.62/31	10.0.224.62 – 10.0.224.63	10.0.224.63
33	10.0.224.64/31	10.0.224.64 – 10.0.224.65	10.0.224.65
34	10.0.224.66/31	10.0.224.66 – 10.0.224.67	10.0.224.67
35	10.0.224.68/31	10.0.224.68 – 10.0.224.69	10.0.224.69
36	10.0.224.70/31	10.0.224.70 – 10.0.224.71	10.0.224.71
37	10.0.224.72/31	10.0.224.72 – 10.0.224.73	10.0.224.73
38	10.0.224.74/31	10.0.224.74 – 10.0.224.75	10.0.224.75
39	10.0.224.76/31	10.0.224.76 – 10.0.224.77	10.0.224.77
40	10.0.224.78/31	10.0.224.78 – 10.0.224.79	10.0.224.79
41	10.0.224.80/31	10.0.224.80 – 10.0.224.81	10.0.224.81
42	10.0.224.82/31	10.0.224.82 – 10.0.224.83	10.0.224.83
43	10.0.224.84/31	10.0.224.84 – 10.0.224.85	10.0.224.85
44	10.0.224.86/31	10.0.224.86 – 10.0.224.87	10.0.224.87
45	10.0.224.88/31	10.0.224.88 – 10.0.224.89	10.0.224.89
46	10.0.224.90/31	10.0.224.90 – 10.0.224.91	10.0.224.91
47	10.0.224.92/31	10.0.224.92 – 10.0.224.93	10.0.224.93
48	10.0.224.94/31	10.0.224.94 – 10.0.224.95	10.0.224.95
49	10.0.224.96/31	10.0.224.96 – 10.0.224.97	10.0.224.97
50	10.0.224.98/31	10.0.224.98 – 10.0.224.99	10.0.224.99
51	10.0.224.100/31	10.0.224.100 – 10.0.224.101	10.0.224.101
52	10.0.224.102/31	10.0.224.102 – 10.0.224.103	10.0.224.103
53	10.0.224.104/31	10.0.224.104 – 10.0.224.105	10.0.224.105
54	10.0.224.106/31	10.0.224.106 – 10.0.224.107	10.0.224.107
55	10.0.224.108/31	10.0.224.108 – 10.0.224.109	10.0.224.109
56	10.0.224.110/31	10.0.224.110 – 10.0.224.111	10.0.224.111
57	10.0.224.112/31	10.0.224.112 – 10.0.224.113	10.0.224.113
58	10.0.224.114/31	10.0.224.114 – 10.0.224.115	10.0.224.115
59	10.0.224.116/31	10.0.224.116 – 10.0.224.117	10.0.224.117
60	10.0.224.118/31	10.0.224.118 – 10.0.224.119	10.0.224.119
61	10.0.224.120/31	10.0.224.120 – 10.0.224.121	10.0.224.121
62	10.0.224.122/31	10.0.224.122 – 10.0.224.123	10.0.224.123
63	10.0.224.124/31	10.0.224.124 – 10.0.224.125	10.0.224.125
64	10.0.224.126/31	10.0.224.126 – 10.0.224.127	10.0.224.127
65	10.0.224.128/31	10.0.224.128 – 10.0.224.129	10.0.224.129
66	10.0.224.130/31	10.0.224.130 – 10.0.224.131	10.0.224.131
67	10.0.224.132/31	10.0.224.132 – 10.0.224.133	10.0.224.133
68	10.0.224.134/31	10.0.224.134 – 10.0.224.135	10.0.224.135
69	10.0.224.136/31	10.0.224.136 – 10.0.224.137	10.0.224.137
70	10.0.224.138/31	10.0.224.138 – 10.0.224.139	10.0.224.139
71	10.0.224.140/31	10.0.224.140 – 10.0.224.141	10.0.224.141
72	10.0.224.142/31	10.0.224.142 – 10.0.224.143	10.0.224.143
73	10.0.224.144/31	10.0.224.144 – 10.0.224.145	10.0.224.145
74	10.0.224.146/31	10.0.224.146 – 10.0.224.147	10.0.224.147
75	10.0.224.148/31	10.0.224.148 – 10.0.224.149	10.0.224.149
76	10.0.224.150/31	10.0.224.150 – 10.0.224.151	10.0.224.151
77	10.0.224.152/31	10.0.224.152 – 10.0.224.153	10.0.224.153
78	10.0.224.154/31	10.0.224.154 – 10.0.224.155	10.0.224.155
79	10.0.224.156/31	10.0.224.156 – 10.0.224.157	10.0.224.157
80	10.0.224.158/31	10.0.224.158 – 10.0.224.159	10.0.224.159
81	10.0.224.160/31	10.0.224.160 – 10.0.224.161	10.0.224.161
82	10.0.224.162/31	10.0.224.162 – 10.0.224.163	10.0.224.163
83	10.0.224.164/31	10.0.224.164 – 10.0.224.165	10.0.224.165
84	10.0.224.166/31	10.0.224.166 – 10.0.224.167	10.0.224.167
85	10.0.224.168/31	10.0.224.168 – 10.0.224.169	10.0.224.169
86	10.0.224.170/31	10.0.224.170 – 10.0.224.171	10.0.224.171
87	10.0.224.172/31	10.0.224.172 – 10.0.224.173	10.0.224.173
88	10.0.224.174/31	10.0.224.174 – 10.0.224.175	10.0.224.175
89	10.0.224.176/31	10.0.224.176 – 10.0.224.177	10.0.224.177
90	10.0.224.178/31	10.0.224.178 – 10.0.224.179	10.0.224.179
91	10.0.224.180/31	10.0.224.180 – 10.0.224.181	10.0.224.181
92	10.0.224.182/31	10.0.224.182 – 10.0.224.183	10.0.224.183
93	10.0.224.184/31	10.0.224.184 – 10.0.224.185	10.0.224.185
94	10.0.224.186/31	10.0.224.186 – 10.0.224.187	10.0.224.187
95	10.0.224.188/31	10.0.224.188 – 10.0.224.189	10.0.224.189
96	10.0.224.190/31	10.0.224.190 – 10.0.224.191	10.0.224.191
97	10.0.224.192/31	10.0.224.192 – 10.0.224.193	10.0.224.193
98	10.0.224.194/31	10.0.224.194 – 10.0.224.195	10.0.224.195
99	10.0.224.196/31	10.0.224.196 – 10.0.224.197	10.0.224.197
100	10.0.224.198/31	10.0.224.198 – 10.0.224.199	10.0.224.199
101	10.0.224.200/31	10.0.224.200 – 10.0.224.201	10.0.224.201
102	10.0.224.202/31	10.0.224.202 – 10.0.224.203	10.0.224.203
103	10.0.224.204/31	10.0.224.204 – 10.0.224.205	10.0.224.205
104	10.0.224.206/31	10.0.224.206 – 10.0.224.207	10.0.224.207
105	10.0.224.208/31	10.0.224.208 – 10.0.224.209	10.0.224.209
106	10.0.224.210/31	10.0.224.210 – 10.0.224.211	10.0.224.211
107	10.0.224.212/31	10.0.224.212 – 10.0.224.213	10.0.224.213
108	10.0.224.214/31	10.0.224.214 – 10.0.224.215	10.0.224.215
109	10.0.224.216/31	10.0.224.216 – 10.0.224.217	10.0.224.217
110	10.0.224.218/31	10.0.224.218 – 10.0.224.219	10.0.224.219
111	10.0.224.220/31	10.0.224.220 – 10.0.224.221	10.0.224.221
112	10.0.224.222/31	10.0.224.222 – 10.0.224.223	10.0.224.223
113	10.0.224.224/31	10.0.224.224 – 10.0.224.225	10.0.224.225
114	10.0.224.226/31	10.0.224.226 – 10.0.224.227	10.0.224.227
115	10.0.224.228/31	10.0.224.228 – 10.0.224.229	10.0.224.229
116	10.0.224.230/31	10.0.224.230 – 10.0.224.231	10.0.224.231
117	10.0.224.232/31	10.0.224.232 – 10.0.224.233	10.0.224.233
118	10.0.224.234/31	10.0.224.234 – 10.0.224.235	10.0.224.235
119	10.0.224.236/31	10.0.224.236 – 10.0.224.237	10.0.224.237
120	10.0.224.238/31	10.0.224.238 – 10.0.224.239	10.0.224.239
121	10.0.224.240/31	10.0.224.240 – 10.0.224.241	10.0.224.241
122	10.0.224.242/31	10.0.224.242 – 10.0.224.243	10.0.224.243
123	10.0.224.244/31	10.0.224.244 – 10.0.224.245	10.0.224.245
124	10.0.224.246/31	10.0.224.246 – 10.0.224.247	10.0.224.247
125	10.0.224.248/31	10.0.224.248 – 10.0.224.249	10.0.224.249
126	10.0.224.250/31	10.0.224.250 – 10.0.224.251	10.0.224.251
127	10.0.224.252/31	10.0.224.252 – 10.0.224.253	10.0.224.253
128	10.0.224.254/31	10.0.224.254 – 10.0.224.255	10.0.224.255

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 →