ip
ipku.in

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.

$ ipcalc
private IP (RFC 1918)10.167.24.128/25
network10.167.24.128/25
broadcast10.167.24.255
first host10.167.24.129
last host10.167.24.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.24.128/25
address00001010.10100111.00011000.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.00011000.10000000
broadcast00001010.10100111.00011000.11111111
green = network part, grey = host part
hex0x0aa71880
decimal178722944
reverse dns128.24.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:1880

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.24.128/3210.167.24.128 – 10.167.24.12810.167.24.128
210.167.24.129/3210.167.24.129 – 10.167.24.12910.167.24.129
310.167.24.130/3210.167.24.130 – 10.167.24.13010.167.24.130
410.167.24.131/3210.167.24.131 – 10.167.24.13110.167.24.131
510.167.24.132/3210.167.24.132 – 10.167.24.13210.167.24.132
610.167.24.133/3210.167.24.133 – 10.167.24.13310.167.24.133
710.167.24.134/3210.167.24.134 – 10.167.24.13410.167.24.134
810.167.24.135/3210.167.24.135 – 10.167.24.13510.167.24.135
910.167.24.136/3210.167.24.136 – 10.167.24.13610.167.24.136
1010.167.24.137/3210.167.24.137 – 10.167.24.13710.167.24.137
1110.167.24.138/3210.167.24.138 – 10.167.24.13810.167.24.138
1210.167.24.139/3210.167.24.139 – 10.167.24.13910.167.24.139
1310.167.24.140/3210.167.24.140 – 10.167.24.14010.167.24.140
1410.167.24.141/3210.167.24.141 – 10.167.24.14110.167.24.141
1510.167.24.142/3210.167.24.142 – 10.167.24.14210.167.24.142
1610.167.24.143/3210.167.24.143 – 10.167.24.14310.167.24.143
1710.167.24.144/3210.167.24.144 – 10.167.24.14410.167.24.144
1810.167.24.145/3210.167.24.145 – 10.167.24.14510.167.24.145
1910.167.24.146/3210.167.24.146 – 10.167.24.14610.167.24.146
2010.167.24.147/3210.167.24.147 – 10.167.24.14710.167.24.147
2110.167.24.148/3210.167.24.148 – 10.167.24.14810.167.24.148
2210.167.24.149/3210.167.24.149 – 10.167.24.14910.167.24.149
2310.167.24.150/3210.167.24.150 – 10.167.24.15010.167.24.150
2410.167.24.151/3210.167.24.151 – 10.167.24.15110.167.24.151
2510.167.24.152/3210.167.24.152 – 10.167.24.15210.167.24.152
2610.167.24.153/3210.167.24.153 – 10.167.24.15310.167.24.153
2710.167.24.154/3210.167.24.154 – 10.167.24.15410.167.24.154
2810.167.24.155/3210.167.24.155 – 10.167.24.15510.167.24.155
2910.167.24.156/3210.167.24.156 – 10.167.24.15610.167.24.156
3010.167.24.157/3210.167.24.157 – 10.167.24.15710.167.24.157
3110.167.24.158/3210.167.24.158 – 10.167.24.15810.167.24.158
3210.167.24.159/3210.167.24.159 – 10.167.24.15910.167.24.159
3310.167.24.160/3210.167.24.160 – 10.167.24.16010.167.24.160
3410.167.24.161/3210.167.24.161 – 10.167.24.16110.167.24.161
3510.167.24.162/3210.167.24.162 – 10.167.24.16210.167.24.162
3610.167.24.163/3210.167.24.163 – 10.167.24.16310.167.24.163
3710.167.24.164/3210.167.24.164 – 10.167.24.16410.167.24.164
3810.167.24.165/3210.167.24.165 – 10.167.24.16510.167.24.165
3910.167.24.166/3210.167.24.166 – 10.167.24.16610.167.24.166
4010.167.24.167/3210.167.24.167 – 10.167.24.16710.167.24.167
4110.167.24.168/3210.167.24.168 – 10.167.24.16810.167.24.168
4210.167.24.169/3210.167.24.169 – 10.167.24.16910.167.24.169
4310.167.24.170/3210.167.24.170 – 10.167.24.17010.167.24.170
4410.167.24.171/3210.167.24.171 – 10.167.24.17110.167.24.171
4510.167.24.172/3210.167.24.172 – 10.167.24.17210.167.24.172
4610.167.24.173/3210.167.24.173 – 10.167.24.17310.167.24.173
4710.167.24.174/3210.167.24.174 – 10.167.24.17410.167.24.174
4810.167.24.175/3210.167.24.175 – 10.167.24.17510.167.24.175
4910.167.24.176/3210.167.24.176 – 10.167.24.17610.167.24.176
5010.167.24.177/3210.167.24.177 – 10.167.24.17710.167.24.177
5110.167.24.178/3210.167.24.178 – 10.167.24.17810.167.24.178
5210.167.24.179/3210.167.24.179 – 10.167.24.17910.167.24.179
5310.167.24.180/3210.167.24.180 – 10.167.24.18010.167.24.180
5410.167.24.181/3210.167.24.181 – 10.167.24.18110.167.24.181
5510.167.24.182/3210.167.24.182 – 10.167.24.18210.167.24.182
5610.167.24.183/3210.167.24.183 – 10.167.24.18310.167.24.183
5710.167.24.184/3210.167.24.184 – 10.167.24.18410.167.24.184
5810.167.24.185/3210.167.24.185 – 10.167.24.18510.167.24.185
5910.167.24.186/3210.167.24.186 – 10.167.24.18610.167.24.186
6010.167.24.187/3210.167.24.187 – 10.167.24.18710.167.24.187
6110.167.24.188/3210.167.24.188 – 10.167.24.18810.167.24.188
6210.167.24.189/3210.167.24.189 – 10.167.24.18910.167.24.189
6310.167.24.190/3210.167.24.190 – 10.167.24.19010.167.24.190
6410.167.24.191/3210.167.24.191 – 10.167.24.19110.167.24.191
6510.167.24.192/3210.167.24.192 – 10.167.24.19210.167.24.192
6610.167.24.193/3210.167.24.193 – 10.167.24.19310.167.24.193
6710.167.24.194/3210.167.24.194 – 10.167.24.19410.167.24.194
6810.167.24.195/3210.167.24.195 – 10.167.24.19510.167.24.195
6910.167.24.196/3210.167.24.196 – 10.167.24.19610.167.24.196
7010.167.24.197/3210.167.24.197 – 10.167.24.19710.167.24.197
7110.167.24.198/3210.167.24.198 – 10.167.24.19810.167.24.198
7210.167.24.199/3210.167.24.199 – 10.167.24.19910.167.24.199
7310.167.24.200/3210.167.24.200 – 10.167.24.20010.167.24.200
7410.167.24.201/3210.167.24.201 – 10.167.24.20110.167.24.201
7510.167.24.202/3210.167.24.202 – 10.167.24.20210.167.24.202
7610.167.24.203/3210.167.24.203 – 10.167.24.20310.167.24.203
7710.167.24.204/3210.167.24.204 – 10.167.24.20410.167.24.204
7810.167.24.205/3210.167.24.205 – 10.167.24.20510.167.24.205
7910.167.24.206/3210.167.24.206 – 10.167.24.20610.167.24.206
8010.167.24.207/3210.167.24.207 – 10.167.24.20710.167.24.207
8110.167.24.208/3210.167.24.208 – 10.167.24.20810.167.24.208
8210.167.24.209/3210.167.24.209 – 10.167.24.20910.167.24.209
8310.167.24.210/3210.167.24.210 – 10.167.24.21010.167.24.210
8410.167.24.211/3210.167.24.211 – 10.167.24.21110.167.24.211
8510.167.24.212/3210.167.24.212 – 10.167.24.21210.167.24.212
8610.167.24.213/3210.167.24.213 – 10.167.24.21310.167.24.213
8710.167.24.214/3210.167.24.214 – 10.167.24.21410.167.24.214
8810.167.24.215/3210.167.24.215 – 10.167.24.21510.167.24.215
8910.167.24.216/3210.167.24.216 – 10.167.24.21610.167.24.216
9010.167.24.217/3210.167.24.217 – 10.167.24.21710.167.24.217
9110.167.24.218/3210.167.24.218 – 10.167.24.21810.167.24.218
9210.167.24.219/3210.167.24.219 – 10.167.24.21910.167.24.219
9310.167.24.220/3210.167.24.220 – 10.167.24.22010.167.24.220
9410.167.24.221/3210.167.24.221 – 10.167.24.22110.167.24.221
9510.167.24.222/3210.167.24.222 – 10.167.24.22210.167.24.222
9610.167.24.223/3210.167.24.223 – 10.167.24.22310.167.24.223
9710.167.24.224/3210.167.24.224 – 10.167.24.22410.167.24.224
9810.167.24.225/3210.167.24.225 – 10.167.24.22510.167.24.225
9910.167.24.226/3210.167.24.226 – 10.167.24.22610.167.24.226
10010.167.24.227/3210.167.24.227 – 10.167.24.22710.167.24.227
10110.167.24.228/3210.167.24.228 – 10.167.24.22810.167.24.228
10210.167.24.229/3210.167.24.229 – 10.167.24.22910.167.24.229
10310.167.24.230/3210.167.24.230 – 10.167.24.23010.167.24.230
10410.167.24.231/3210.167.24.231 – 10.167.24.23110.167.24.231
10510.167.24.232/3210.167.24.232 – 10.167.24.23210.167.24.232
10610.167.24.233/3210.167.24.233 – 10.167.24.23310.167.24.233
10710.167.24.234/3210.167.24.234 – 10.167.24.23410.167.24.234
10810.167.24.235/3210.167.24.235 – 10.167.24.23510.167.24.235
10910.167.24.236/3210.167.24.236 – 10.167.24.23610.167.24.236
11010.167.24.237/3210.167.24.237 – 10.167.24.23710.167.24.237
11110.167.24.238/3210.167.24.238 – 10.167.24.23810.167.24.238
11210.167.24.239/3210.167.24.239 – 10.167.24.23910.167.24.239
11310.167.24.240/3210.167.24.240 – 10.167.24.24010.167.24.240
11410.167.24.241/3210.167.24.241 – 10.167.24.24110.167.24.241
11510.167.24.242/3210.167.24.242 – 10.167.24.24210.167.24.242
11610.167.24.243/3210.167.24.243 – 10.167.24.24310.167.24.243
11710.167.24.244/3210.167.24.244 – 10.167.24.24410.167.24.244
11810.167.24.245/3210.167.24.245 – 10.167.24.24510.167.24.245
11910.167.24.246/3210.167.24.246 – 10.167.24.24610.167.24.246
12010.167.24.247/3210.167.24.247 – 10.167.24.24710.167.24.247
12110.167.24.248/3210.167.24.248 – 10.167.24.24810.167.24.248
12210.167.24.249/3210.167.24.249 – 10.167.24.24910.167.24.249
12310.167.24.250/3210.167.24.250 – 10.167.24.25010.167.24.250
12410.167.24.251/3210.167.24.251 – 10.167.24.25110.167.24.251
12510.167.24.252/3210.167.24.252 – 10.167.24.25210.167.24.252
12610.167.24.253/3210.167.24.253 – 10.167.24.25310.167.24.253
12710.167.24.254/3210.167.24.254 – 10.167.24.25410.167.24.254
12810.167.24.255/3210.167.24.255 – 10.167.24.25510.167.24.255
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /25
/00.0.0.04,294,967,2964,294,967,294-
/1128.0.0.02,147,483,6482,147,483,646-
/2192.0.0.01,073,741,8241,073,741,822-
/3224.0.0.0536,870,912536,870,910-
/4240.0.0.0268,435,456268,435,454-
/5248.0.0.0134,217,728134,217,726-
/6252.0.0.067,108,86467,108,862-
/7254.0.0.033,554,43233,554,430-
/8255.0.0.016,777,21616,777,214-
/9255.128.0.08,388,6088,388,606-
/10255.192.0.04,194,3044,194,302-
/11255.224.0.02,097,1522,097,150-
/12255.240.0.01,048,5761,048,574-
/13255.248.0.0524,288524,286-
/14255.252.0.0262,144262,142-
/15255.254.0.0131,072131,070-
/16255.255.0.065,53665,534-
/17255.255.128.032,76832,766-
/18255.255.192.016,38416,382-
/19255.255.224.08,1928,190-
/20255.255.240.04,0964,094-
/21255.255.248.02,0482,046-
/22255.255.252.01,0241,022-
/23255.255.254.0512510-
/24255.255.255.0256254-
/25255.255.255.1281281261
/26255.255.255.19264622 split →
/27255.255.255.22432304 split →
/28255.255.255.24016148 split →
/29255.255.255.2488616 split →
/30255.255.255.2524232 split →
/31255.255.255.2542264 split →
/32255.255.255.25511128 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 →