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)10.167.193.128/25
network10.167.193.128/25
broadcast10.167.193.255
first host10.167.193.129
last host10.167.193.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.193.128/25
address00001010.10100111.11000001.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.11000001.10000000
broadcast00001010.10100111.11000001.11111111
green = network part, grey = host part
hex0x0aa7c180
decimal178766208
reverse dns128.193.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:c180

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.193.128/3210.167.193.128 – 10.167.193.12810.167.193.128
210.167.193.129/3210.167.193.129 – 10.167.193.12910.167.193.129
310.167.193.130/3210.167.193.130 – 10.167.193.13010.167.193.130
410.167.193.131/3210.167.193.131 – 10.167.193.13110.167.193.131
510.167.193.132/3210.167.193.132 – 10.167.193.13210.167.193.132
610.167.193.133/3210.167.193.133 – 10.167.193.13310.167.193.133
710.167.193.134/3210.167.193.134 – 10.167.193.13410.167.193.134
810.167.193.135/3210.167.193.135 – 10.167.193.13510.167.193.135
910.167.193.136/3210.167.193.136 – 10.167.193.13610.167.193.136
1010.167.193.137/3210.167.193.137 – 10.167.193.13710.167.193.137
1110.167.193.138/3210.167.193.138 – 10.167.193.13810.167.193.138
1210.167.193.139/3210.167.193.139 – 10.167.193.13910.167.193.139
1310.167.193.140/3210.167.193.140 – 10.167.193.14010.167.193.140
1410.167.193.141/3210.167.193.141 – 10.167.193.14110.167.193.141
1510.167.193.142/3210.167.193.142 – 10.167.193.14210.167.193.142
1610.167.193.143/3210.167.193.143 – 10.167.193.14310.167.193.143
1710.167.193.144/3210.167.193.144 – 10.167.193.14410.167.193.144
1810.167.193.145/3210.167.193.145 – 10.167.193.14510.167.193.145
1910.167.193.146/3210.167.193.146 – 10.167.193.14610.167.193.146
2010.167.193.147/3210.167.193.147 – 10.167.193.14710.167.193.147
2110.167.193.148/3210.167.193.148 – 10.167.193.14810.167.193.148
2210.167.193.149/3210.167.193.149 – 10.167.193.14910.167.193.149
2310.167.193.150/3210.167.193.150 – 10.167.193.15010.167.193.150
2410.167.193.151/3210.167.193.151 – 10.167.193.15110.167.193.151
2510.167.193.152/3210.167.193.152 – 10.167.193.15210.167.193.152
2610.167.193.153/3210.167.193.153 – 10.167.193.15310.167.193.153
2710.167.193.154/3210.167.193.154 – 10.167.193.15410.167.193.154
2810.167.193.155/3210.167.193.155 – 10.167.193.15510.167.193.155
2910.167.193.156/3210.167.193.156 – 10.167.193.15610.167.193.156
3010.167.193.157/3210.167.193.157 – 10.167.193.15710.167.193.157
3110.167.193.158/3210.167.193.158 – 10.167.193.15810.167.193.158
3210.167.193.159/3210.167.193.159 – 10.167.193.15910.167.193.159
3310.167.193.160/3210.167.193.160 – 10.167.193.16010.167.193.160
3410.167.193.161/3210.167.193.161 – 10.167.193.16110.167.193.161
3510.167.193.162/3210.167.193.162 – 10.167.193.16210.167.193.162
3610.167.193.163/3210.167.193.163 – 10.167.193.16310.167.193.163
3710.167.193.164/3210.167.193.164 – 10.167.193.16410.167.193.164
3810.167.193.165/3210.167.193.165 – 10.167.193.16510.167.193.165
3910.167.193.166/3210.167.193.166 – 10.167.193.16610.167.193.166
4010.167.193.167/3210.167.193.167 – 10.167.193.16710.167.193.167
4110.167.193.168/3210.167.193.168 – 10.167.193.16810.167.193.168
4210.167.193.169/3210.167.193.169 – 10.167.193.16910.167.193.169
4310.167.193.170/3210.167.193.170 – 10.167.193.17010.167.193.170
4410.167.193.171/3210.167.193.171 – 10.167.193.17110.167.193.171
4510.167.193.172/3210.167.193.172 – 10.167.193.17210.167.193.172
4610.167.193.173/3210.167.193.173 – 10.167.193.17310.167.193.173
4710.167.193.174/3210.167.193.174 – 10.167.193.17410.167.193.174
4810.167.193.175/3210.167.193.175 – 10.167.193.17510.167.193.175
4910.167.193.176/3210.167.193.176 – 10.167.193.17610.167.193.176
5010.167.193.177/3210.167.193.177 – 10.167.193.17710.167.193.177
5110.167.193.178/3210.167.193.178 – 10.167.193.17810.167.193.178
5210.167.193.179/3210.167.193.179 – 10.167.193.17910.167.193.179
5310.167.193.180/3210.167.193.180 – 10.167.193.18010.167.193.180
5410.167.193.181/3210.167.193.181 – 10.167.193.18110.167.193.181
5510.167.193.182/3210.167.193.182 – 10.167.193.18210.167.193.182
5610.167.193.183/3210.167.193.183 – 10.167.193.18310.167.193.183
5710.167.193.184/3210.167.193.184 – 10.167.193.18410.167.193.184
5810.167.193.185/3210.167.193.185 – 10.167.193.18510.167.193.185
5910.167.193.186/3210.167.193.186 – 10.167.193.18610.167.193.186
6010.167.193.187/3210.167.193.187 – 10.167.193.18710.167.193.187
6110.167.193.188/3210.167.193.188 – 10.167.193.18810.167.193.188
6210.167.193.189/3210.167.193.189 – 10.167.193.18910.167.193.189
6310.167.193.190/3210.167.193.190 – 10.167.193.19010.167.193.190
6410.167.193.191/3210.167.193.191 – 10.167.193.19110.167.193.191
6510.167.193.192/3210.167.193.192 – 10.167.193.19210.167.193.192
6610.167.193.193/3210.167.193.193 – 10.167.193.19310.167.193.193
6710.167.193.194/3210.167.193.194 – 10.167.193.19410.167.193.194
6810.167.193.195/3210.167.193.195 – 10.167.193.19510.167.193.195
6910.167.193.196/3210.167.193.196 – 10.167.193.19610.167.193.196
7010.167.193.197/3210.167.193.197 – 10.167.193.19710.167.193.197
7110.167.193.198/3210.167.193.198 – 10.167.193.19810.167.193.198
7210.167.193.199/3210.167.193.199 – 10.167.193.19910.167.193.199
7310.167.193.200/3210.167.193.200 – 10.167.193.20010.167.193.200
7410.167.193.201/3210.167.193.201 – 10.167.193.20110.167.193.201
7510.167.193.202/3210.167.193.202 – 10.167.193.20210.167.193.202
7610.167.193.203/3210.167.193.203 – 10.167.193.20310.167.193.203
7710.167.193.204/3210.167.193.204 – 10.167.193.20410.167.193.204
7810.167.193.205/3210.167.193.205 – 10.167.193.20510.167.193.205
7910.167.193.206/3210.167.193.206 – 10.167.193.20610.167.193.206
8010.167.193.207/3210.167.193.207 – 10.167.193.20710.167.193.207
8110.167.193.208/3210.167.193.208 – 10.167.193.20810.167.193.208
8210.167.193.209/3210.167.193.209 – 10.167.193.20910.167.193.209
8310.167.193.210/3210.167.193.210 – 10.167.193.21010.167.193.210
8410.167.193.211/3210.167.193.211 – 10.167.193.21110.167.193.211
8510.167.193.212/3210.167.193.212 – 10.167.193.21210.167.193.212
8610.167.193.213/3210.167.193.213 – 10.167.193.21310.167.193.213
8710.167.193.214/3210.167.193.214 – 10.167.193.21410.167.193.214
8810.167.193.215/3210.167.193.215 – 10.167.193.21510.167.193.215
8910.167.193.216/3210.167.193.216 – 10.167.193.21610.167.193.216
9010.167.193.217/3210.167.193.217 – 10.167.193.21710.167.193.217
9110.167.193.218/3210.167.193.218 – 10.167.193.21810.167.193.218
9210.167.193.219/3210.167.193.219 – 10.167.193.21910.167.193.219
9310.167.193.220/3210.167.193.220 – 10.167.193.22010.167.193.220
9410.167.193.221/3210.167.193.221 – 10.167.193.22110.167.193.221
9510.167.193.222/3210.167.193.222 – 10.167.193.22210.167.193.222
9610.167.193.223/3210.167.193.223 – 10.167.193.22310.167.193.223
9710.167.193.224/3210.167.193.224 – 10.167.193.22410.167.193.224
9810.167.193.225/3210.167.193.225 – 10.167.193.22510.167.193.225
9910.167.193.226/3210.167.193.226 – 10.167.193.22610.167.193.226
10010.167.193.227/3210.167.193.227 – 10.167.193.22710.167.193.227
10110.167.193.228/3210.167.193.228 – 10.167.193.22810.167.193.228
10210.167.193.229/3210.167.193.229 – 10.167.193.22910.167.193.229
10310.167.193.230/3210.167.193.230 – 10.167.193.23010.167.193.230
10410.167.193.231/3210.167.193.231 – 10.167.193.23110.167.193.231
10510.167.193.232/3210.167.193.232 – 10.167.193.23210.167.193.232
10610.167.193.233/3210.167.193.233 – 10.167.193.23310.167.193.233
10710.167.193.234/3210.167.193.234 – 10.167.193.23410.167.193.234
10810.167.193.235/3210.167.193.235 – 10.167.193.23510.167.193.235
10910.167.193.236/3210.167.193.236 – 10.167.193.23610.167.193.236
11010.167.193.237/3210.167.193.237 – 10.167.193.23710.167.193.237
11110.167.193.238/3210.167.193.238 – 10.167.193.23810.167.193.238
11210.167.193.239/3210.167.193.239 – 10.167.193.23910.167.193.239
11310.167.193.240/3210.167.193.240 – 10.167.193.24010.167.193.240
11410.167.193.241/3210.167.193.241 – 10.167.193.24110.167.193.241
11510.167.193.242/3210.167.193.242 – 10.167.193.24210.167.193.242
11610.167.193.243/3210.167.193.243 – 10.167.193.24310.167.193.243
11710.167.193.244/3210.167.193.244 – 10.167.193.24410.167.193.244
11810.167.193.245/3210.167.193.245 – 10.167.193.24510.167.193.245
11910.167.193.246/3210.167.193.246 – 10.167.193.24610.167.193.246
12010.167.193.247/3210.167.193.247 – 10.167.193.24710.167.193.247
12110.167.193.248/3210.167.193.248 – 10.167.193.24810.167.193.248
12210.167.193.249/3210.167.193.249 – 10.167.193.24910.167.193.249
12310.167.193.250/3210.167.193.250 – 10.167.193.25010.167.193.250
12410.167.193.251/3210.167.193.251 – 10.167.193.25110.167.193.251
12510.167.193.252/3210.167.193.252 – 10.167.193.25210.167.193.252
12610.167.193.253/3210.167.193.253 – 10.167.193.25310.167.193.253
12710.167.193.254/3210.167.193.254 – 10.167.193.25410.167.193.254
12810.167.193.255/3210.167.193.255 – 10.167.193.25510.167.193.255
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 →