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)10.167.67.128/25
network10.167.67.128/25
broadcast10.167.67.255
first host10.167.67.129
last host10.167.67.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.67.128/25
address00001010.10100111.01000011.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.01000011.10000000
broadcast00001010.10100111.01000011.11111111
green = network part, grey = host part
hex0x0aa74380
decimal178733952
reverse dns128.67.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:4380

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.67.128/3210.167.67.128 – 10.167.67.12810.167.67.128
210.167.67.129/3210.167.67.129 – 10.167.67.12910.167.67.129
310.167.67.130/3210.167.67.130 – 10.167.67.13010.167.67.130
410.167.67.131/3210.167.67.131 – 10.167.67.13110.167.67.131
510.167.67.132/3210.167.67.132 – 10.167.67.13210.167.67.132
610.167.67.133/3210.167.67.133 – 10.167.67.13310.167.67.133
710.167.67.134/3210.167.67.134 – 10.167.67.13410.167.67.134
810.167.67.135/3210.167.67.135 – 10.167.67.13510.167.67.135
910.167.67.136/3210.167.67.136 – 10.167.67.13610.167.67.136
1010.167.67.137/3210.167.67.137 – 10.167.67.13710.167.67.137
1110.167.67.138/3210.167.67.138 – 10.167.67.13810.167.67.138
1210.167.67.139/3210.167.67.139 – 10.167.67.13910.167.67.139
1310.167.67.140/3210.167.67.140 – 10.167.67.14010.167.67.140
1410.167.67.141/3210.167.67.141 – 10.167.67.14110.167.67.141
1510.167.67.142/3210.167.67.142 – 10.167.67.14210.167.67.142
1610.167.67.143/3210.167.67.143 – 10.167.67.14310.167.67.143
1710.167.67.144/3210.167.67.144 – 10.167.67.14410.167.67.144
1810.167.67.145/3210.167.67.145 – 10.167.67.14510.167.67.145
1910.167.67.146/3210.167.67.146 – 10.167.67.14610.167.67.146
2010.167.67.147/3210.167.67.147 – 10.167.67.14710.167.67.147
2110.167.67.148/3210.167.67.148 – 10.167.67.14810.167.67.148
2210.167.67.149/3210.167.67.149 – 10.167.67.14910.167.67.149
2310.167.67.150/3210.167.67.150 – 10.167.67.15010.167.67.150
2410.167.67.151/3210.167.67.151 – 10.167.67.15110.167.67.151
2510.167.67.152/3210.167.67.152 – 10.167.67.15210.167.67.152
2610.167.67.153/3210.167.67.153 – 10.167.67.15310.167.67.153
2710.167.67.154/3210.167.67.154 – 10.167.67.15410.167.67.154
2810.167.67.155/3210.167.67.155 – 10.167.67.15510.167.67.155
2910.167.67.156/3210.167.67.156 – 10.167.67.15610.167.67.156
3010.167.67.157/3210.167.67.157 – 10.167.67.15710.167.67.157
3110.167.67.158/3210.167.67.158 – 10.167.67.15810.167.67.158
3210.167.67.159/3210.167.67.159 – 10.167.67.15910.167.67.159
3310.167.67.160/3210.167.67.160 – 10.167.67.16010.167.67.160
3410.167.67.161/3210.167.67.161 – 10.167.67.16110.167.67.161
3510.167.67.162/3210.167.67.162 – 10.167.67.16210.167.67.162
3610.167.67.163/3210.167.67.163 – 10.167.67.16310.167.67.163
3710.167.67.164/3210.167.67.164 – 10.167.67.16410.167.67.164
3810.167.67.165/3210.167.67.165 – 10.167.67.16510.167.67.165
3910.167.67.166/3210.167.67.166 – 10.167.67.16610.167.67.166
4010.167.67.167/3210.167.67.167 – 10.167.67.16710.167.67.167
4110.167.67.168/3210.167.67.168 – 10.167.67.16810.167.67.168
4210.167.67.169/3210.167.67.169 – 10.167.67.16910.167.67.169
4310.167.67.170/3210.167.67.170 – 10.167.67.17010.167.67.170
4410.167.67.171/3210.167.67.171 – 10.167.67.17110.167.67.171
4510.167.67.172/3210.167.67.172 – 10.167.67.17210.167.67.172
4610.167.67.173/3210.167.67.173 – 10.167.67.17310.167.67.173
4710.167.67.174/3210.167.67.174 – 10.167.67.17410.167.67.174
4810.167.67.175/3210.167.67.175 – 10.167.67.17510.167.67.175
4910.167.67.176/3210.167.67.176 – 10.167.67.17610.167.67.176
5010.167.67.177/3210.167.67.177 – 10.167.67.17710.167.67.177
5110.167.67.178/3210.167.67.178 – 10.167.67.17810.167.67.178
5210.167.67.179/3210.167.67.179 – 10.167.67.17910.167.67.179
5310.167.67.180/3210.167.67.180 – 10.167.67.18010.167.67.180
5410.167.67.181/3210.167.67.181 – 10.167.67.18110.167.67.181
5510.167.67.182/3210.167.67.182 – 10.167.67.18210.167.67.182
5610.167.67.183/3210.167.67.183 – 10.167.67.18310.167.67.183
5710.167.67.184/3210.167.67.184 – 10.167.67.18410.167.67.184
5810.167.67.185/3210.167.67.185 – 10.167.67.18510.167.67.185
5910.167.67.186/3210.167.67.186 – 10.167.67.18610.167.67.186
6010.167.67.187/3210.167.67.187 – 10.167.67.18710.167.67.187
6110.167.67.188/3210.167.67.188 – 10.167.67.18810.167.67.188
6210.167.67.189/3210.167.67.189 – 10.167.67.18910.167.67.189
6310.167.67.190/3210.167.67.190 – 10.167.67.19010.167.67.190
6410.167.67.191/3210.167.67.191 – 10.167.67.19110.167.67.191
6510.167.67.192/3210.167.67.192 – 10.167.67.19210.167.67.192
6610.167.67.193/3210.167.67.193 – 10.167.67.19310.167.67.193
6710.167.67.194/3210.167.67.194 – 10.167.67.19410.167.67.194
6810.167.67.195/3210.167.67.195 – 10.167.67.19510.167.67.195
6910.167.67.196/3210.167.67.196 – 10.167.67.19610.167.67.196
7010.167.67.197/3210.167.67.197 – 10.167.67.19710.167.67.197
7110.167.67.198/3210.167.67.198 – 10.167.67.19810.167.67.198
7210.167.67.199/3210.167.67.199 – 10.167.67.19910.167.67.199
7310.167.67.200/3210.167.67.200 – 10.167.67.20010.167.67.200
7410.167.67.201/3210.167.67.201 – 10.167.67.20110.167.67.201
7510.167.67.202/3210.167.67.202 – 10.167.67.20210.167.67.202
7610.167.67.203/3210.167.67.203 – 10.167.67.20310.167.67.203
7710.167.67.204/3210.167.67.204 – 10.167.67.20410.167.67.204
7810.167.67.205/3210.167.67.205 – 10.167.67.20510.167.67.205
7910.167.67.206/3210.167.67.206 – 10.167.67.20610.167.67.206
8010.167.67.207/3210.167.67.207 – 10.167.67.20710.167.67.207
8110.167.67.208/3210.167.67.208 – 10.167.67.20810.167.67.208
8210.167.67.209/3210.167.67.209 – 10.167.67.20910.167.67.209
8310.167.67.210/3210.167.67.210 – 10.167.67.21010.167.67.210
8410.167.67.211/3210.167.67.211 – 10.167.67.21110.167.67.211
8510.167.67.212/3210.167.67.212 – 10.167.67.21210.167.67.212
8610.167.67.213/3210.167.67.213 – 10.167.67.21310.167.67.213
8710.167.67.214/3210.167.67.214 – 10.167.67.21410.167.67.214
8810.167.67.215/3210.167.67.215 – 10.167.67.21510.167.67.215
8910.167.67.216/3210.167.67.216 – 10.167.67.21610.167.67.216
9010.167.67.217/3210.167.67.217 – 10.167.67.21710.167.67.217
9110.167.67.218/3210.167.67.218 – 10.167.67.21810.167.67.218
9210.167.67.219/3210.167.67.219 – 10.167.67.21910.167.67.219
9310.167.67.220/3210.167.67.220 – 10.167.67.22010.167.67.220
9410.167.67.221/3210.167.67.221 – 10.167.67.22110.167.67.221
9510.167.67.222/3210.167.67.222 – 10.167.67.22210.167.67.222
9610.167.67.223/3210.167.67.223 – 10.167.67.22310.167.67.223
9710.167.67.224/3210.167.67.224 – 10.167.67.22410.167.67.224
9810.167.67.225/3210.167.67.225 – 10.167.67.22510.167.67.225
9910.167.67.226/3210.167.67.226 – 10.167.67.22610.167.67.226
10010.167.67.227/3210.167.67.227 – 10.167.67.22710.167.67.227
10110.167.67.228/3210.167.67.228 – 10.167.67.22810.167.67.228
10210.167.67.229/3210.167.67.229 – 10.167.67.22910.167.67.229
10310.167.67.230/3210.167.67.230 – 10.167.67.23010.167.67.230
10410.167.67.231/3210.167.67.231 – 10.167.67.23110.167.67.231
10510.167.67.232/3210.167.67.232 – 10.167.67.23210.167.67.232
10610.167.67.233/3210.167.67.233 – 10.167.67.23310.167.67.233
10710.167.67.234/3210.167.67.234 – 10.167.67.23410.167.67.234
10810.167.67.235/3210.167.67.235 – 10.167.67.23510.167.67.235
10910.167.67.236/3210.167.67.236 – 10.167.67.23610.167.67.236
11010.167.67.237/3210.167.67.237 – 10.167.67.23710.167.67.237
11110.167.67.238/3210.167.67.238 – 10.167.67.23810.167.67.238
11210.167.67.239/3210.167.67.239 – 10.167.67.23910.167.67.239
11310.167.67.240/3210.167.67.240 – 10.167.67.24010.167.67.240
11410.167.67.241/3210.167.67.241 – 10.167.67.24110.167.67.241
11510.167.67.242/3210.167.67.242 – 10.167.67.24210.167.67.242
11610.167.67.243/3210.167.67.243 – 10.167.67.24310.167.67.243
11710.167.67.244/3210.167.67.244 – 10.167.67.24410.167.67.244
11810.167.67.245/3210.167.67.245 – 10.167.67.24510.167.67.245
11910.167.67.246/3210.167.67.246 – 10.167.67.24610.167.67.246
12010.167.67.247/3210.167.67.247 – 10.167.67.24710.167.67.247
12110.167.67.248/3210.167.67.248 – 10.167.67.24810.167.67.248
12210.167.67.249/3210.167.67.249 – 10.167.67.24910.167.67.249
12310.167.67.250/3210.167.67.250 – 10.167.67.25010.167.67.250
12410.167.67.251/3210.167.67.251 – 10.167.67.25110.167.67.251
12510.167.67.252/3210.167.67.252 – 10.167.67.25210.167.67.252
12610.167.67.253/3210.167.67.253 – 10.167.67.25310.167.67.253
12710.167.67.254/3210.167.67.254 – 10.167.67.25410.167.67.254
12810.167.67.255/3210.167.67.255 – 10.167.67.25510.167.67.255
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 →