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)10.167.114.128/25

network10.167.114.128/25

broadcast10.167.114.255

first host10.167.114.129

last host10.167.114.254

subnet mask255.255.255.128

wildcard0.0.0.127

addresses128

usable hosts126

classA

ipcalc 10.167.114.128/25

address00001010.10100111.01110010.10000000

subnet mask11111111.11111111.11111111.10000000

network00001010.10100111.01110010.10000000

broadcast00001010.10100111.01110010.11111111

green = network part, grey = host part

hex0x0aa77280

decimal178745984

reverse dns128.114.167.10.in-addr.arpa

ipv4-mapped::ffff:aa7:7280

/25 split into /32 · 128 subnets

close ×

#	network	host range	broadcast
1	10.167.114.128/32	10.167.114.128 – 10.167.114.128	10.167.114.128
2	10.167.114.129/32	10.167.114.129 – 10.167.114.129	10.167.114.129
3	10.167.114.130/32	10.167.114.130 – 10.167.114.130	10.167.114.130
4	10.167.114.131/32	10.167.114.131 – 10.167.114.131	10.167.114.131
5	10.167.114.132/32	10.167.114.132 – 10.167.114.132	10.167.114.132
6	10.167.114.133/32	10.167.114.133 – 10.167.114.133	10.167.114.133
7	10.167.114.134/32	10.167.114.134 – 10.167.114.134	10.167.114.134
8	10.167.114.135/32	10.167.114.135 – 10.167.114.135	10.167.114.135
9	10.167.114.136/32	10.167.114.136 – 10.167.114.136	10.167.114.136
10	10.167.114.137/32	10.167.114.137 – 10.167.114.137	10.167.114.137
11	10.167.114.138/32	10.167.114.138 – 10.167.114.138	10.167.114.138
12	10.167.114.139/32	10.167.114.139 – 10.167.114.139	10.167.114.139
13	10.167.114.140/32	10.167.114.140 – 10.167.114.140	10.167.114.140
14	10.167.114.141/32	10.167.114.141 – 10.167.114.141	10.167.114.141
15	10.167.114.142/32	10.167.114.142 – 10.167.114.142	10.167.114.142
16	10.167.114.143/32	10.167.114.143 – 10.167.114.143	10.167.114.143
17	10.167.114.144/32	10.167.114.144 – 10.167.114.144	10.167.114.144
18	10.167.114.145/32	10.167.114.145 – 10.167.114.145	10.167.114.145
19	10.167.114.146/32	10.167.114.146 – 10.167.114.146	10.167.114.146
20	10.167.114.147/32	10.167.114.147 – 10.167.114.147	10.167.114.147
21	10.167.114.148/32	10.167.114.148 – 10.167.114.148	10.167.114.148
22	10.167.114.149/32	10.167.114.149 – 10.167.114.149	10.167.114.149
23	10.167.114.150/32	10.167.114.150 – 10.167.114.150	10.167.114.150
24	10.167.114.151/32	10.167.114.151 – 10.167.114.151	10.167.114.151
25	10.167.114.152/32	10.167.114.152 – 10.167.114.152	10.167.114.152
26	10.167.114.153/32	10.167.114.153 – 10.167.114.153	10.167.114.153
27	10.167.114.154/32	10.167.114.154 – 10.167.114.154	10.167.114.154
28	10.167.114.155/32	10.167.114.155 – 10.167.114.155	10.167.114.155
29	10.167.114.156/32	10.167.114.156 – 10.167.114.156	10.167.114.156
30	10.167.114.157/32	10.167.114.157 – 10.167.114.157	10.167.114.157
31	10.167.114.158/32	10.167.114.158 – 10.167.114.158	10.167.114.158
32	10.167.114.159/32	10.167.114.159 – 10.167.114.159	10.167.114.159
33	10.167.114.160/32	10.167.114.160 – 10.167.114.160	10.167.114.160
34	10.167.114.161/32	10.167.114.161 – 10.167.114.161	10.167.114.161
35	10.167.114.162/32	10.167.114.162 – 10.167.114.162	10.167.114.162
36	10.167.114.163/32	10.167.114.163 – 10.167.114.163	10.167.114.163
37	10.167.114.164/32	10.167.114.164 – 10.167.114.164	10.167.114.164
38	10.167.114.165/32	10.167.114.165 – 10.167.114.165	10.167.114.165
39	10.167.114.166/32	10.167.114.166 – 10.167.114.166	10.167.114.166
40	10.167.114.167/32	10.167.114.167 – 10.167.114.167	10.167.114.167
41	10.167.114.168/32	10.167.114.168 – 10.167.114.168	10.167.114.168
42	10.167.114.169/32	10.167.114.169 – 10.167.114.169	10.167.114.169
43	10.167.114.170/32	10.167.114.170 – 10.167.114.170	10.167.114.170
44	10.167.114.171/32	10.167.114.171 – 10.167.114.171	10.167.114.171
45	10.167.114.172/32	10.167.114.172 – 10.167.114.172	10.167.114.172
46	10.167.114.173/32	10.167.114.173 – 10.167.114.173	10.167.114.173
47	10.167.114.174/32	10.167.114.174 – 10.167.114.174	10.167.114.174
48	10.167.114.175/32	10.167.114.175 – 10.167.114.175	10.167.114.175
49	10.167.114.176/32	10.167.114.176 – 10.167.114.176	10.167.114.176
50	10.167.114.177/32	10.167.114.177 – 10.167.114.177	10.167.114.177
51	10.167.114.178/32	10.167.114.178 – 10.167.114.178	10.167.114.178
52	10.167.114.179/32	10.167.114.179 – 10.167.114.179	10.167.114.179
53	10.167.114.180/32	10.167.114.180 – 10.167.114.180	10.167.114.180
54	10.167.114.181/32	10.167.114.181 – 10.167.114.181	10.167.114.181
55	10.167.114.182/32	10.167.114.182 – 10.167.114.182	10.167.114.182
56	10.167.114.183/32	10.167.114.183 – 10.167.114.183	10.167.114.183
57	10.167.114.184/32	10.167.114.184 – 10.167.114.184	10.167.114.184
58	10.167.114.185/32	10.167.114.185 – 10.167.114.185	10.167.114.185
59	10.167.114.186/32	10.167.114.186 – 10.167.114.186	10.167.114.186
60	10.167.114.187/32	10.167.114.187 – 10.167.114.187	10.167.114.187
61	10.167.114.188/32	10.167.114.188 – 10.167.114.188	10.167.114.188
62	10.167.114.189/32	10.167.114.189 – 10.167.114.189	10.167.114.189
63	10.167.114.190/32	10.167.114.190 – 10.167.114.190	10.167.114.190
64	10.167.114.191/32	10.167.114.191 – 10.167.114.191	10.167.114.191
65	10.167.114.192/32	10.167.114.192 – 10.167.114.192	10.167.114.192
66	10.167.114.193/32	10.167.114.193 – 10.167.114.193	10.167.114.193
67	10.167.114.194/32	10.167.114.194 – 10.167.114.194	10.167.114.194
68	10.167.114.195/32	10.167.114.195 – 10.167.114.195	10.167.114.195
69	10.167.114.196/32	10.167.114.196 – 10.167.114.196	10.167.114.196
70	10.167.114.197/32	10.167.114.197 – 10.167.114.197	10.167.114.197
71	10.167.114.198/32	10.167.114.198 – 10.167.114.198	10.167.114.198
72	10.167.114.199/32	10.167.114.199 – 10.167.114.199	10.167.114.199
73	10.167.114.200/32	10.167.114.200 – 10.167.114.200	10.167.114.200
74	10.167.114.201/32	10.167.114.201 – 10.167.114.201	10.167.114.201
75	10.167.114.202/32	10.167.114.202 – 10.167.114.202	10.167.114.202
76	10.167.114.203/32	10.167.114.203 – 10.167.114.203	10.167.114.203
77	10.167.114.204/32	10.167.114.204 – 10.167.114.204	10.167.114.204
78	10.167.114.205/32	10.167.114.205 – 10.167.114.205	10.167.114.205
79	10.167.114.206/32	10.167.114.206 – 10.167.114.206	10.167.114.206
80	10.167.114.207/32	10.167.114.207 – 10.167.114.207	10.167.114.207
81	10.167.114.208/32	10.167.114.208 – 10.167.114.208	10.167.114.208
82	10.167.114.209/32	10.167.114.209 – 10.167.114.209	10.167.114.209
83	10.167.114.210/32	10.167.114.210 – 10.167.114.210	10.167.114.210
84	10.167.114.211/32	10.167.114.211 – 10.167.114.211	10.167.114.211
85	10.167.114.212/32	10.167.114.212 – 10.167.114.212	10.167.114.212
86	10.167.114.213/32	10.167.114.213 – 10.167.114.213	10.167.114.213
87	10.167.114.214/32	10.167.114.214 – 10.167.114.214	10.167.114.214
88	10.167.114.215/32	10.167.114.215 – 10.167.114.215	10.167.114.215
89	10.167.114.216/32	10.167.114.216 – 10.167.114.216	10.167.114.216
90	10.167.114.217/32	10.167.114.217 – 10.167.114.217	10.167.114.217
91	10.167.114.218/32	10.167.114.218 – 10.167.114.218	10.167.114.218
92	10.167.114.219/32	10.167.114.219 – 10.167.114.219	10.167.114.219
93	10.167.114.220/32	10.167.114.220 – 10.167.114.220	10.167.114.220
94	10.167.114.221/32	10.167.114.221 – 10.167.114.221	10.167.114.221
95	10.167.114.222/32	10.167.114.222 – 10.167.114.222	10.167.114.222
96	10.167.114.223/32	10.167.114.223 – 10.167.114.223	10.167.114.223
97	10.167.114.224/32	10.167.114.224 – 10.167.114.224	10.167.114.224
98	10.167.114.225/32	10.167.114.225 – 10.167.114.225	10.167.114.225
99	10.167.114.226/32	10.167.114.226 – 10.167.114.226	10.167.114.226
100	10.167.114.227/32	10.167.114.227 – 10.167.114.227	10.167.114.227
101	10.167.114.228/32	10.167.114.228 – 10.167.114.228	10.167.114.228
102	10.167.114.229/32	10.167.114.229 – 10.167.114.229	10.167.114.229
103	10.167.114.230/32	10.167.114.230 – 10.167.114.230	10.167.114.230
104	10.167.114.231/32	10.167.114.231 – 10.167.114.231	10.167.114.231
105	10.167.114.232/32	10.167.114.232 – 10.167.114.232	10.167.114.232
106	10.167.114.233/32	10.167.114.233 – 10.167.114.233	10.167.114.233
107	10.167.114.234/32	10.167.114.234 – 10.167.114.234	10.167.114.234
108	10.167.114.235/32	10.167.114.235 – 10.167.114.235	10.167.114.235
109	10.167.114.236/32	10.167.114.236 – 10.167.114.236	10.167.114.236
110	10.167.114.237/32	10.167.114.237 – 10.167.114.237	10.167.114.237
111	10.167.114.238/32	10.167.114.238 – 10.167.114.238	10.167.114.238
112	10.167.114.239/32	10.167.114.239 – 10.167.114.239	10.167.114.239
113	10.167.114.240/32	10.167.114.240 – 10.167.114.240	10.167.114.240
114	10.167.114.241/32	10.167.114.241 – 10.167.114.241	10.167.114.241
115	10.167.114.242/32	10.167.114.242 – 10.167.114.242	10.167.114.242
116	10.167.114.243/32	10.167.114.243 – 10.167.114.243	10.167.114.243
117	10.167.114.244/32	10.167.114.244 – 10.167.114.244	10.167.114.244
118	10.167.114.245/32	10.167.114.245 – 10.167.114.245	10.167.114.245
119	10.167.114.246/32	10.167.114.246 – 10.167.114.246	10.167.114.246
120	10.167.114.247/32	10.167.114.247 – 10.167.114.247	10.167.114.247
121	10.167.114.248/32	10.167.114.248 – 10.167.114.248	10.167.114.248
122	10.167.114.249/32	10.167.114.249 – 10.167.114.249	10.167.114.249
123	10.167.114.250/32	10.167.114.250 – 10.167.114.250	10.167.114.250
124	10.167.114.251/32	10.167.114.251 – 10.167.114.251	10.167.114.251
125	10.167.114.252/32	10.167.114.252 – 10.167.114.252	10.167.114.252
126	10.167.114.253/32	10.167.114.253 – 10.167.114.253	10.167.114.253
127	10.167.114.254/32	10.167.114.254 – 10.167.114.254	10.167.114.254
128	10.167.114.255/32	10.167.114.255 – 10.167.114.255	10.167.114.255

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 /25
/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	-
/25	255.255.255.128	128	126	1
/26	255.255.255.192	64	62	2 split →
/27	255.255.255.224	32	30	4 split →
/28	255.255.255.240	16	14	8 split →
/29	255.255.255.248	8	6	16 split →
/30	255.255.255.252	4	2	32 split →
/31	255.255.255.254	2	2	64 split →
/32	255.255.255.255	1	1	128 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 →