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)10.167.143.128/25
network10.167.143.128/25
broadcast10.167.143.255
first host10.167.143.129
last host10.167.143.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.143.128/25
address00001010.10100111.10001111.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.10001111.10000000
broadcast00001010.10100111.10001111.11111111
green = network part, grey = host part
hex0x0aa78f80
decimal178753408
reverse dns128.143.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:8f80

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.143.128/3210.167.143.128 – 10.167.143.12810.167.143.128
210.167.143.129/3210.167.143.129 – 10.167.143.12910.167.143.129
310.167.143.130/3210.167.143.130 – 10.167.143.13010.167.143.130
410.167.143.131/3210.167.143.131 – 10.167.143.13110.167.143.131
510.167.143.132/3210.167.143.132 – 10.167.143.13210.167.143.132
610.167.143.133/3210.167.143.133 – 10.167.143.13310.167.143.133
710.167.143.134/3210.167.143.134 – 10.167.143.13410.167.143.134
810.167.143.135/3210.167.143.135 – 10.167.143.13510.167.143.135
910.167.143.136/3210.167.143.136 – 10.167.143.13610.167.143.136
1010.167.143.137/3210.167.143.137 – 10.167.143.13710.167.143.137
1110.167.143.138/3210.167.143.138 – 10.167.143.13810.167.143.138
1210.167.143.139/3210.167.143.139 – 10.167.143.13910.167.143.139
1310.167.143.140/3210.167.143.140 – 10.167.143.14010.167.143.140
1410.167.143.141/3210.167.143.141 – 10.167.143.14110.167.143.141
1510.167.143.142/3210.167.143.142 – 10.167.143.14210.167.143.142
1610.167.143.143/3210.167.143.143 – 10.167.143.14310.167.143.143
1710.167.143.144/3210.167.143.144 – 10.167.143.14410.167.143.144
1810.167.143.145/3210.167.143.145 – 10.167.143.14510.167.143.145
1910.167.143.146/3210.167.143.146 – 10.167.143.14610.167.143.146
2010.167.143.147/3210.167.143.147 – 10.167.143.14710.167.143.147
2110.167.143.148/3210.167.143.148 – 10.167.143.14810.167.143.148
2210.167.143.149/3210.167.143.149 – 10.167.143.14910.167.143.149
2310.167.143.150/3210.167.143.150 – 10.167.143.15010.167.143.150
2410.167.143.151/3210.167.143.151 – 10.167.143.15110.167.143.151
2510.167.143.152/3210.167.143.152 – 10.167.143.15210.167.143.152
2610.167.143.153/3210.167.143.153 – 10.167.143.15310.167.143.153
2710.167.143.154/3210.167.143.154 – 10.167.143.15410.167.143.154
2810.167.143.155/3210.167.143.155 – 10.167.143.15510.167.143.155
2910.167.143.156/3210.167.143.156 – 10.167.143.15610.167.143.156
3010.167.143.157/3210.167.143.157 – 10.167.143.15710.167.143.157
3110.167.143.158/3210.167.143.158 – 10.167.143.15810.167.143.158
3210.167.143.159/3210.167.143.159 – 10.167.143.15910.167.143.159
3310.167.143.160/3210.167.143.160 – 10.167.143.16010.167.143.160
3410.167.143.161/3210.167.143.161 – 10.167.143.16110.167.143.161
3510.167.143.162/3210.167.143.162 – 10.167.143.16210.167.143.162
3610.167.143.163/3210.167.143.163 – 10.167.143.16310.167.143.163
3710.167.143.164/3210.167.143.164 – 10.167.143.16410.167.143.164
3810.167.143.165/3210.167.143.165 – 10.167.143.16510.167.143.165
3910.167.143.166/3210.167.143.166 – 10.167.143.16610.167.143.166
4010.167.143.167/3210.167.143.167 – 10.167.143.16710.167.143.167
4110.167.143.168/3210.167.143.168 – 10.167.143.16810.167.143.168
4210.167.143.169/3210.167.143.169 – 10.167.143.16910.167.143.169
4310.167.143.170/3210.167.143.170 – 10.167.143.17010.167.143.170
4410.167.143.171/3210.167.143.171 – 10.167.143.17110.167.143.171
4510.167.143.172/3210.167.143.172 – 10.167.143.17210.167.143.172
4610.167.143.173/3210.167.143.173 – 10.167.143.17310.167.143.173
4710.167.143.174/3210.167.143.174 – 10.167.143.17410.167.143.174
4810.167.143.175/3210.167.143.175 – 10.167.143.17510.167.143.175
4910.167.143.176/3210.167.143.176 – 10.167.143.17610.167.143.176
5010.167.143.177/3210.167.143.177 – 10.167.143.17710.167.143.177
5110.167.143.178/3210.167.143.178 – 10.167.143.17810.167.143.178
5210.167.143.179/3210.167.143.179 – 10.167.143.17910.167.143.179
5310.167.143.180/3210.167.143.180 – 10.167.143.18010.167.143.180
5410.167.143.181/3210.167.143.181 – 10.167.143.18110.167.143.181
5510.167.143.182/3210.167.143.182 – 10.167.143.18210.167.143.182
5610.167.143.183/3210.167.143.183 – 10.167.143.18310.167.143.183
5710.167.143.184/3210.167.143.184 – 10.167.143.18410.167.143.184
5810.167.143.185/3210.167.143.185 – 10.167.143.18510.167.143.185
5910.167.143.186/3210.167.143.186 – 10.167.143.18610.167.143.186
6010.167.143.187/3210.167.143.187 – 10.167.143.18710.167.143.187
6110.167.143.188/3210.167.143.188 – 10.167.143.18810.167.143.188
6210.167.143.189/3210.167.143.189 – 10.167.143.18910.167.143.189
6310.167.143.190/3210.167.143.190 – 10.167.143.19010.167.143.190
6410.167.143.191/3210.167.143.191 – 10.167.143.19110.167.143.191
6510.167.143.192/3210.167.143.192 – 10.167.143.19210.167.143.192
6610.167.143.193/3210.167.143.193 – 10.167.143.19310.167.143.193
6710.167.143.194/3210.167.143.194 – 10.167.143.19410.167.143.194
6810.167.143.195/3210.167.143.195 – 10.167.143.19510.167.143.195
6910.167.143.196/3210.167.143.196 – 10.167.143.19610.167.143.196
7010.167.143.197/3210.167.143.197 – 10.167.143.19710.167.143.197
7110.167.143.198/3210.167.143.198 – 10.167.143.19810.167.143.198
7210.167.143.199/3210.167.143.199 – 10.167.143.19910.167.143.199
7310.167.143.200/3210.167.143.200 – 10.167.143.20010.167.143.200
7410.167.143.201/3210.167.143.201 – 10.167.143.20110.167.143.201
7510.167.143.202/3210.167.143.202 – 10.167.143.20210.167.143.202
7610.167.143.203/3210.167.143.203 – 10.167.143.20310.167.143.203
7710.167.143.204/3210.167.143.204 – 10.167.143.20410.167.143.204
7810.167.143.205/3210.167.143.205 – 10.167.143.20510.167.143.205
7910.167.143.206/3210.167.143.206 – 10.167.143.20610.167.143.206
8010.167.143.207/3210.167.143.207 – 10.167.143.20710.167.143.207
8110.167.143.208/3210.167.143.208 – 10.167.143.20810.167.143.208
8210.167.143.209/3210.167.143.209 – 10.167.143.20910.167.143.209
8310.167.143.210/3210.167.143.210 – 10.167.143.21010.167.143.210
8410.167.143.211/3210.167.143.211 – 10.167.143.21110.167.143.211
8510.167.143.212/3210.167.143.212 – 10.167.143.21210.167.143.212
8610.167.143.213/3210.167.143.213 – 10.167.143.21310.167.143.213
8710.167.143.214/3210.167.143.214 – 10.167.143.21410.167.143.214
8810.167.143.215/3210.167.143.215 – 10.167.143.21510.167.143.215
8910.167.143.216/3210.167.143.216 – 10.167.143.21610.167.143.216
9010.167.143.217/3210.167.143.217 – 10.167.143.21710.167.143.217
9110.167.143.218/3210.167.143.218 – 10.167.143.21810.167.143.218
9210.167.143.219/3210.167.143.219 – 10.167.143.21910.167.143.219
9310.167.143.220/3210.167.143.220 – 10.167.143.22010.167.143.220
9410.167.143.221/3210.167.143.221 – 10.167.143.22110.167.143.221
9510.167.143.222/3210.167.143.222 – 10.167.143.22210.167.143.222
9610.167.143.223/3210.167.143.223 – 10.167.143.22310.167.143.223
9710.167.143.224/3210.167.143.224 – 10.167.143.22410.167.143.224
9810.167.143.225/3210.167.143.225 – 10.167.143.22510.167.143.225
9910.167.143.226/3210.167.143.226 – 10.167.143.22610.167.143.226
10010.167.143.227/3210.167.143.227 – 10.167.143.22710.167.143.227
10110.167.143.228/3210.167.143.228 – 10.167.143.22810.167.143.228
10210.167.143.229/3210.167.143.229 – 10.167.143.22910.167.143.229
10310.167.143.230/3210.167.143.230 – 10.167.143.23010.167.143.230
10410.167.143.231/3210.167.143.231 – 10.167.143.23110.167.143.231
10510.167.143.232/3210.167.143.232 – 10.167.143.23210.167.143.232
10610.167.143.233/3210.167.143.233 – 10.167.143.23310.167.143.233
10710.167.143.234/3210.167.143.234 – 10.167.143.23410.167.143.234
10810.167.143.235/3210.167.143.235 – 10.167.143.23510.167.143.235
10910.167.143.236/3210.167.143.236 – 10.167.143.23610.167.143.236
11010.167.143.237/3210.167.143.237 – 10.167.143.23710.167.143.237
11110.167.143.238/3210.167.143.238 – 10.167.143.23810.167.143.238
11210.167.143.239/3210.167.143.239 – 10.167.143.23910.167.143.239
11310.167.143.240/3210.167.143.240 – 10.167.143.24010.167.143.240
11410.167.143.241/3210.167.143.241 – 10.167.143.24110.167.143.241
11510.167.143.242/3210.167.143.242 – 10.167.143.24210.167.143.242
11610.167.143.243/3210.167.143.243 – 10.167.143.24310.167.143.243
11710.167.143.244/3210.167.143.244 – 10.167.143.24410.167.143.244
11810.167.143.245/3210.167.143.245 – 10.167.143.24510.167.143.245
11910.167.143.246/3210.167.143.246 – 10.167.143.24610.167.143.246
12010.167.143.247/3210.167.143.247 – 10.167.143.24710.167.143.247
12110.167.143.248/3210.167.143.248 – 10.167.143.24810.167.143.248
12210.167.143.249/3210.167.143.249 – 10.167.143.24910.167.143.249
12310.167.143.250/3210.167.143.250 – 10.167.143.25010.167.143.250
12410.167.143.251/3210.167.143.251 – 10.167.143.25110.167.143.251
12510.167.143.252/3210.167.143.252 – 10.167.143.25210.167.143.252
12610.167.143.253/3210.167.143.253 – 10.167.143.25310.167.143.253
12710.167.143.254/3210.167.143.254 – 10.167.143.25410.167.143.254
12810.167.143.255/3210.167.143.255 – 10.167.143.25510.167.143.255
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 →