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)10.167.54.128/25
network10.167.54.128/25
broadcast10.167.54.255
first host10.167.54.129
last host10.167.54.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.54.128/25
address00001010.10100111.00110110.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.00110110.10000000
broadcast00001010.10100111.00110110.11111111
green = network part, grey = host part
hex0x0aa73680
decimal178730624
reverse dns128.54.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:3680

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.54.128/3210.167.54.128 – 10.167.54.12810.167.54.128
210.167.54.129/3210.167.54.129 – 10.167.54.12910.167.54.129
310.167.54.130/3210.167.54.130 – 10.167.54.13010.167.54.130
410.167.54.131/3210.167.54.131 – 10.167.54.13110.167.54.131
510.167.54.132/3210.167.54.132 – 10.167.54.13210.167.54.132
610.167.54.133/3210.167.54.133 – 10.167.54.13310.167.54.133
710.167.54.134/3210.167.54.134 – 10.167.54.13410.167.54.134
810.167.54.135/3210.167.54.135 – 10.167.54.13510.167.54.135
910.167.54.136/3210.167.54.136 – 10.167.54.13610.167.54.136
1010.167.54.137/3210.167.54.137 – 10.167.54.13710.167.54.137
1110.167.54.138/3210.167.54.138 – 10.167.54.13810.167.54.138
1210.167.54.139/3210.167.54.139 – 10.167.54.13910.167.54.139
1310.167.54.140/3210.167.54.140 – 10.167.54.14010.167.54.140
1410.167.54.141/3210.167.54.141 – 10.167.54.14110.167.54.141
1510.167.54.142/3210.167.54.142 – 10.167.54.14210.167.54.142
1610.167.54.143/3210.167.54.143 – 10.167.54.14310.167.54.143
1710.167.54.144/3210.167.54.144 – 10.167.54.14410.167.54.144
1810.167.54.145/3210.167.54.145 – 10.167.54.14510.167.54.145
1910.167.54.146/3210.167.54.146 – 10.167.54.14610.167.54.146
2010.167.54.147/3210.167.54.147 – 10.167.54.14710.167.54.147
2110.167.54.148/3210.167.54.148 – 10.167.54.14810.167.54.148
2210.167.54.149/3210.167.54.149 – 10.167.54.14910.167.54.149
2310.167.54.150/3210.167.54.150 – 10.167.54.15010.167.54.150
2410.167.54.151/3210.167.54.151 – 10.167.54.15110.167.54.151
2510.167.54.152/3210.167.54.152 – 10.167.54.15210.167.54.152
2610.167.54.153/3210.167.54.153 – 10.167.54.15310.167.54.153
2710.167.54.154/3210.167.54.154 – 10.167.54.15410.167.54.154
2810.167.54.155/3210.167.54.155 – 10.167.54.15510.167.54.155
2910.167.54.156/3210.167.54.156 – 10.167.54.15610.167.54.156
3010.167.54.157/3210.167.54.157 – 10.167.54.15710.167.54.157
3110.167.54.158/3210.167.54.158 – 10.167.54.15810.167.54.158
3210.167.54.159/3210.167.54.159 – 10.167.54.15910.167.54.159
3310.167.54.160/3210.167.54.160 – 10.167.54.16010.167.54.160
3410.167.54.161/3210.167.54.161 – 10.167.54.16110.167.54.161
3510.167.54.162/3210.167.54.162 – 10.167.54.16210.167.54.162
3610.167.54.163/3210.167.54.163 – 10.167.54.16310.167.54.163
3710.167.54.164/3210.167.54.164 – 10.167.54.16410.167.54.164
3810.167.54.165/3210.167.54.165 – 10.167.54.16510.167.54.165
3910.167.54.166/3210.167.54.166 – 10.167.54.16610.167.54.166
4010.167.54.167/3210.167.54.167 – 10.167.54.16710.167.54.167
4110.167.54.168/3210.167.54.168 – 10.167.54.16810.167.54.168
4210.167.54.169/3210.167.54.169 – 10.167.54.16910.167.54.169
4310.167.54.170/3210.167.54.170 – 10.167.54.17010.167.54.170
4410.167.54.171/3210.167.54.171 – 10.167.54.17110.167.54.171
4510.167.54.172/3210.167.54.172 – 10.167.54.17210.167.54.172
4610.167.54.173/3210.167.54.173 – 10.167.54.17310.167.54.173
4710.167.54.174/3210.167.54.174 – 10.167.54.17410.167.54.174
4810.167.54.175/3210.167.54.175 – 10.167.54.17510.167.54.175
4910.167.54.176/3210.167.54.176 – 10.167.54.17610.167.54.176
5010.167.54.177/3210.167.54.177 – 10.167.54.17710.167.54.177
5110.167.54.178/3210.167.54.178 – 10.167.54.17810.167.54.178
5210.167.54.179/3210.167.54.179 – 10.167.54.17910.167.54.179
5310.167.54.180/3210.167.54.180 – 10.167.54.18010.167.54.180
5410.167.54.181/3210.167.54.181 – 10.167.54.18110.167.54.181
5510.167.54.182/3210.167.54.182 – 10.167.54.18210.167.54.182
5610.167.54.183/3210.167.54.183 – 10.167.54.18310.167.54.183
5710.167.54.184/3210.167.54.184 – 10.167.54.18410.167.54.184
5810.167.54.185/3210.167.54.185 – 10.167.54.18510.167.54.185
5910.167.54.186/3210.167.54.186 – 10.167.54.18610.167.54.186
6010.167.54.187/3210.167.54.187 – 10.167.54.18710.167.54.187
6110.167.54.188/3210.167.54.188 – 10.167.54.18810.167.54.188
6210.167.54.189/3210.167.54.189 – 10.167.54.18910.167.54.189
6310.167.54.190/3210.167.54.190 – 10.167.54.19010.167.54.190
6410.167.54.191/3210.167.54.191 – 10.167.54.19110.167.54.191
6510.167.54.192/3210.167.54.192 – 10.167.54.19210.167.54.192
6610.167.54.193/3210.167.54.193 – 10.167.54.19310.167.54.193
6710.167.54.194/3210.167.54.194 – 10.167.54.19410.167.54.194
6810.167.54.195/3210.167.54.195 – 10.167.54.19510.167.54.195
6910.167.54.196/3210.167.54.196 – 10.167.54.19610.167.54.196
7010.167.54.197/3210.167.54.197 – 10.167.54.19710.167.54.197
7110.167.54.198/3210.167.54.198 – 10.167.54.19810.167.54.198
7210.167.54.199/3210.167.54.199 – 10.167.54.19910.167.54.199
7310.167.54.200/3210.167.54.200 – 10.167.54.20010.167.54.200
7410.167.54.201/3210.167.54.201 – 10.167.54.20110.167.54.201
7510.167.54.202/3210.167.54.202 – 10.167.54.20210.167.54.202
7610.167.54.203/3210.167.54.203 – 10.167.54.20310.167.54.203
7710.167.54.204/3210.167.54.204 – 10.167.54.20410.167.54.204
7810.167.54.205/3210.167.54.205 – 10.167.54.20510.167.54.205
7910.167.54.206/3210.167.54.206 – 10.167.54.20610.167.54.206
8010.167.54.207/3210.167.54.207 – 10.167.54.20710.167.54.207
8110.167.54.208/3210.167.54.208 – 10.167.54.20810.167.54.208
8210.167.54.209/3210.167.54.209 – 10.167.54.20910.167.54.209
8310.167.54.210/3210.167.54.210 – 10.167.54.21010.167.54.210
8410.167.54.211/3210.167.54.211 – 10.167.54.21110.167.54.211
8510.167.54.212/3210.167.54.212 – 10.167.54.21210.167.54.212
8610.167.54.213/3210.167.54.213 – 10.167.54.21310.167.54.213
8710.167.54.214/3210.167.54.214 – 10.167.54.21410.167.54.214
8810.167.54.215/3210.167.54.215 – 10.167.54.21510.167.54.215
8910.167.54.216/3210.167.54.216 – 10.167.54.21610.167.54.216
9010.167.54.217/3210.167.54.217 – 10.167.54.21710.167.54.217
9110.167.54.218/3210.167.54.218 – 10.167.54.21810.167.54.218
9210.167.54.219/3210.167.54.219 – 10.167.54.21910.167.54.219
9310.167.54.220/3210.167.54.220 – 10.167.54.22010.167.54.220
9410.167.54.221/3210.167.54.221 – 10.167.54.22110.167.54.221
9510.167.54.222/3210.167.54.222 – 10.167.54.22210.167.54.222
9610.167.54.223/3210.167.54.223 – 10.167.54.22310.167.54.223
9710.167.54.224/3210.167.54.224 – 10.167.54.22410.167.54.224
9810.167.54.225/3210.167.54.225 – 10.167.54.22510.167.54.225
9910.167.54.226/3210.167.54.226 – 10.167.54.22610.167.54.226
10010.167.54.227/3210.167.54.227 – 10.167.54.22710.167.54.227
10110.167.54.228/3210.167.54.228 – 10.167.54.22810.167.54.228
10210.167.54.229/3210.167.54.229 – 10.167.54.22910.167.54.229
10310.167.54.230/3210.167.54.230 – 10.167.54.23010.167.54.230
10410.167.54.231/3210.167.54.231 – 10.167.54.23110.167.54.231
10510.167.54.232/3210.167.54.232 – 10.167.54.23210.167.54.232
10610.167.54.233/3210.167.54.233 – 10.167.54.23310.167.54.233
10710.167.54.234/3210.167.54.234 – 10.167.54.23410.167.54.234
10810.167.54.235/3210.167.54.235 – 10.167.54.23510.167.54.235
10910.167.54.236/3210.167.54.236 – 10.167.54.23610.167.54.236
11010.167.54.237/3210.167.54.237 – 10.167.54.23710.167.54.237
11110.167.54.238/3210.167.54.238 – 10.167.54.23810.167.54.238
11210.167.54.239/3210.167.54.239 – 10.167.54.23910.167.54.239
11310.167.54.240/3210.167.54.240 – 10.167.54.24010.167.54.240
11410.167.54.241/3210.167.54.241 – 10.167.54.24110.167.54.241
11510.167.54.242/3210.167.54.242 – 10.167.54.24210.167.54.242
11610.167.54.243/3210.167.54.243 – 10.167.54.24310.167.54.243
11710.167.54.244/3210.167.54.244 – 10.167.54.24410.167.54.244
11810.167.54.245/3210.167.54.245 – 10.167.54.24510.167.54.245
11910.167.54.246/3210.167.54.246 – 10.167.54.24610.167.54.246
12010.167.54.247/3210.167.54.247 – 10.167.54.24710.167.54.247
12110.167.54.248/3210.167.54.248 – 10.167.54.24810.167.54.248
12210.167.54.249/3210.167.54.249 – 10.167.54.24910.167.54.249
12310.167.54.250/3210.167.54.250 – 10.167.54.25010.167.54.250
12410.167.54.251/3210.167.54.251 – 10.167.54.25110.167.54.251
12510.167.54.252/3210.167.54.252 – 10.167.54.25210.167.54.252
12610.167.54.253/3210.167.54.253 – 10.167.54.25310.167.54.253
12710.167.54.254/3210.167.54.254 – 10.167.54.25410.167.54.254
12810.167.54.255/3210.167.54.255 – 10.167.54.25510.167.54.255
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 →