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
Try:192.168.1.10/2410.0.0.0/8172.16.5.4/20203.0.113.9/29
IPv6 calculator →
private IP (RFC 1918)10.167.13.128/25
network10.167.13.128/25
broadcast10.167.13.255
first host10.167.13.129
last host10.167.13.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.13.128/25
address00001010.10100111.00001101.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.00001101.10000000
broadcast00001010.10100111.00001101.11111111
green = network part, grey = host part
hex0x0aa70d80
decimal178720128
reverse dns128.13.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:d80

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.13.128/3210.167.13.128 – 10.167.13.12810.167.13.128
210.167.13.129/3210.167.13.129 – 10.167.13.12910.167.13.129
310.167.13.130/3210.167.13.130 – 10.167.13.13010.167.13.130
410.167.13.131/3210.167.13.131 – 10.167.13.13110.167.13.131
510.167.13.132/3210.167.13.132 – 10.167.13.13210.167.13.132
610.167.13.133/3210.167.13.133 – 10.167.13.13310.167.13.133
710.167.13.134/3210.167.13.134 – 10.167.13.13410.167.13.134
810.167.13.135/3210.167.13.135 – 10.167.13.13510.167.13.135
910.167.13.136/3210.167.13.136 – 10.167.13.13610.167.13.136
1010.167.13.137/3210.167.13.137 – 10.167.13.13710.167.13.137
1110.167.13.138/3210.167.13.138 – 10.167.13.13810.167.13.138
1210.167.13.139/3210.167.13.139 – 10.167.13.13910.167.13.139
1310.167.13.140/3210.167.13.140 – 10.167.13.14010.167.13.140
1410.167.13.141/3210.167.13.141 – 10.167.13.14110.167.13.141
1510.167.13.142/3210.167.13.142 – 10.167.13.14210.167.13.142
1610.167.13.143/3210.167.13.143 – 10.167.13.14310.167.13.143
1710.167.13.144/3210.167.13.144 – 10.167.13.14410.167.13.144
1810.167.13.145/3210.167.13.145 – 10.167.13.14510.167.13.145
1910.167.13.146/3210.167.13.146 – 10.167.13.14610.167.13.146
2010.167.13.147/3210.167.13.147 – 10.167.13.14710.167.13.147
2110.167.13.148/3210.167.13.148 – 10.167.13.14810.167.13.148
2210.167.13.149/3210.167.13.149 – 10.167.13.14910.167.13.149
2310.167.13.150/3210.167.13.150 – 10.167.13.15010.167.13.150
2410.167.13.151/3210.167.13.151 – 10.167.13.15110.167.13.151
2510.167.13.152/3210.167.13.152 – 10.167.13.15210.167.13.152
2610.167.13.153/3210.167.13.153 – 10.167.13.15310.167.13.153
2710.167.13.154/3210.167.13.154 – 10.167.13.15410.167.13.154
2810.167.13.155/3210.167.13.155 – 10.167.13.15510.167.13.155
2910.167.13.156/3210.167.13.156 – 10.167.13.15610.167.13.156
3010.167.13.157/3210.167.13.157 – 10.167.13.15710.167.13.157
3110.167.13.158/3210.167.13.158 – 10.167.13.15810.167.13.158
3210.167.13.159/3210.167.13.159 – 10.167.13.15910.167.13.159
3310.167.13.160/3210.167.13.160 – 10.167.13.16010.167.13.160
3410.167.13.161/3210.167.13.161 – 10.167.13.16110.167.13.161
3510.167.13.162/3210.167.13.162 – 10.167.13.16210.167.13.162
3610.167.13.163/3210.167.13.163 – 10.167.13.16310.167.13.163
3710.167.13.164/3210.167.13.164 – 10.167.13.16410.167.13.164
3810.167.13.165/3210.167.13.165 – 10.167.13.16510.167.13.165
3910.167.13.166/3210.167.13.166 – 10.167.13.16610.167.13.166
4010.167.13.167/3210.167.13.167 – 10.167.13.16710.167.13.167
4110.167.13.168/3210.167.13.168 – 10.167.13.16810.167.13.168
4210.167.13.169/3210.167.13.169 – 10.167.13.16910.167.13.169
4310.167.13.170/3210.167.13.170 – 10.167.13.17010.167.13.170
4410.167.13.171/3210.167.13.171 – 10.167.13.17110.167.13.171
4510.167.13.172/3210.167.13.172 – 10.167.13.17210.167.13.172
4610.167.13.173/3210.167.13.173 – 10.167.13.17310.167.13.173
4710.167.13.174/3210.167.13.174 – 10.167.13.17410.167.13.174
4810.167.13.175/3210.167.13.175 – 10.167.13.17510.167.13.175
4910.167.13.176/3210.167.13.176 – 10.167.13.17610.167.13.176
5010.167.13.177/3210.167.13.177 – 10.167.13.17710.167.13.177
5110.167.13.178/3210.167.13.178 – 10.167.13.17810.167.13.178
5210.167.13.179/3210.167.13.179 – 10.167.13.17910.167.13.179
5310.167.13.180/3210.167.13.180 – 10.167.13.18010.167.13.180
5410.167.13.181/3210.167.13.181 – 10.167.13.18110.167.13.181
5510.167.13.182/3210.167.13.182 – 10.167.13.18210.167.13.182
5610.167.13.183/3210.167.13.183 – 10.167.13.18310.167.13.183
5710.167.13.184/3210.167.13.184 – 10.167.13.18410.167.13.184
5810.167.13.185/3210.167.13.185 – 10.167.13.18510.167.13.185
5910.167.13.186/3210.167.13.186 – 10.167.13.18610.167.13.186
6010.167.13.187/3210.167.13.187 – 10.167.13.18710.167.13.187
6110.167.13.188/3210.167.13.188 – 10.167.13.18810.167.13.188
6210.167.13.189/3210.167.13.189 – 10.167.13.18910.167.13.189
6310.167.13.190/3210.167.13.190 – 10.167.13.19010.167.13.190
6410.167.13.191/3210.167.13.191 – 10.167.13.19110.167.13.191
6510.167.13.192/3210.167.13.192 – 10.167.13.19210.167.13.192
6610.167.13.193/3210.167.13.193 – 10.167.13.19310.167.13.193
6710.167.13.194/3210.167.13.194 – 10.167.13.19410.167.13.194
6810.167.13.195/3210.167.13.195 – 10.167.13.19510.167.13.195
6910.167.13.196/3210.167.13.196 – 10.167.13.19610.167.13.196
7010.167.13.197/3210.167.13.197 – 10.167.13.19710.167.13.197
7110.167.13.198/3210.167.13.198 – 10.167.13.19810.167.13.198
7210.167.13.199/3210.167.13.199 – 10.167.13.19910.167.13.199
7310.167.13.200/3210.167.13.200 – 10.167.13.20010.167.13.200
7410.167.13.201/3210.167.13.201 – 10.167.13.20110.167.13.201
7510.167.13.202/3210.167.13.202 – 10.167.13.20210.167.13.202
7610.167.13.203/3210.167.13.203 – 10.167.13.20310.167.13.203
7710.167.13.204/3210.167.13.204 – 10.167.13.20410.167.13.204
7810.167.13.205/3210.167.13.205 – 10.167.13.20510.167.13.205
7910.167.13.206/3210.167.13.206 – 10.167.13.20610.167.13.206
8010.167.13.207/3210.167.13.207 – 10.167.13.20710.167.13.207
8110.167.13.208/3210.167.13.208 – 10.167.13.20810.167.13.208
8210.167.13.209/3210.167.13.209 – 10.167.13.20910.167.13.209
8310.167.13.210/3210.167.13.210 – 10.167.13.21010.167.13.210
8410.167.13.211/3210.167.13.211 – 10.167.13.21110.167.13.211
8510.167.13.212/3210.167.13.212 – 10.167.13.21210.167.13.212
8610.167.13.213/3210.167.13.213 – 10.167.13.21310.167.13.213
8710.167.13.214/3210.167.13.214 – 10.167.13.21410.167.13.214
8810.167.13.215/3210.167.13.215 – 10.167.13.21510.167.13.215
8910.167.13.216/3210.167.13.216 – 10.167.13.21610.167.13.216
9010.167.13.217/3210.167.13.217 – 10.167.13.21710.167.13.217
9110.167.13.218/3210.167.13.218 – 10.167.13.21810.167.13.218
9210.167.13.219/3210.167.13.219 – 10.167.13.21910.167.13.219
9310.167.13.220/3210.167.13.220 – 10.167.13.22010.167.13.220
9410.167.13.221/3210.167.13.221 – 10.167.13.22110.167.13.221
9510.167.13.222/3210.167.13.222 – 10.167.13.22210.167.13.222
9610.167.13.223/3210.167.13.223 – 10.167.13.22310.167.13.223
9710.167.13.224/3210.167.13.224 – 10.167.13.22410.167.13.224
9810.167.13.225/3210.167.13.225 – 10.167.13.22510.167.13.225
9910.167.13.226/3210.167.13.226 – 10.167.13.22610.167.13.226
10010.167.13.227/3210.167.13.227 – 10.167.13.22710.167.13.227
10110.167.13.228/3210.167.13.228 – 10.167.13.22810.167.13.228
10210.167.13.229/3210.167.13.229 – 10.167.13.22910.167.13.229
10310.167.13.230/3210.167.13.230 – 10.167.13.23010.167.13.230
10410.167.13.231/3210.167.13.231 – 10.167.13.23110.167.13.231
10510.167.13.232/3210.167.13.232 – 10.167.13.23210.167.13.232
10610.167.13.233/3210.167.13.233 – 10.167.13.23310.167.13.233
10710.167.13.234/3210.167.13.234 – 10.167.13.23410.167.13.234
10810.167.13.235/3210.167.13.235 – 10.167.13.23510.167.13.235
10910.167.13.236/3210.167.13.236 – 10.167.13.23610.167.13.236
11010.167.13.237/3210.167.13.237 – 10.167.13.23710.167.13.237
11110.167.13.238/3210.167.13.238 – 10.167.13.23810.167.13.238
11210.167.13.239/3210.167.13.239 – 10.167.13.23910.167.13.239
11310.167.13.240/3210.167.13.240 – 10.167.13.24010.167.13.240
11410.167.13.241/3210.167.13.241 – 10.167.13.24110.167.13.241
11510.167.13.242/3210.167.13.242 – 10.167.13.24210.167.13.242
11610.167.13.243/3210.167.13.243 – 10.167.13.24310.167.13.243
11710.167.13.244/3210.167.13.244 – 10.167.13.24410.167.13.244
11810.167.13.245/3210.167.13.245 – 10.167.13.24510.167.13.245
11910.167.13.246/3210.167.13.246 – 10.167.13.24610.167.13.246
12010.167.13.247/3210.167.13.247 – 10.167.13.24710.167.13.247
12110.167.13.248/3210.167.13.248 – 10.167.13.24810.167.13.248
12210.167.13.249/3210.167.13.249 – 10.167.13.24910.167.13.249
12310.167.13.250/3210.167.13.250 – 10.167.13.25010.167.13.250
12410.167.13.251/3210.167.13.251 – 10.167.13.25110.167.13.251
12510.167.13.252/3210.167.13.252 – 10.167.13.25210.167.13.252
12610.167.13.253/3210.167.13.253 – 10.167.13.25310.167.13.253
12710.167.13.254/3210.167.13.254 – 10.167.13.25410.167.13.254
12810.167.13.255/3210.167.13.255 – 10.167.13.25510.167.13.255
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 →