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)10.167.79.128/25
network10.167.79.128/25
broadcast10.167.79.255
first host10.167.79.129
last host10.167.79.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.79.128/25
address00001010.10100111.01001111.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.01001111.10000000
broadcast00001010.10100111.01001111.11111111
green = network part, grey = host part
hex0x0aa74f80
decimal178737024
reverse dns128.79.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:4f80

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.79.128/3210.167.79.128 – 10.167.79.12810.167.79.128
210.167.79.129/3210.167.79.129 – 10.167.79.12910.167.79.129
310.167.79.130/3210.167.79.130 – 10.167.79.13010.167.79.130
410.167.79.131/3210.167.79.131 – 10.167.79.13110.167.79.131
510.167.79.132/3210.167.79.132 – 10.167.79.13210.167.79.132
610.167.79.133/3210.167.79.133 – 10.167.79.13310.167.79.133
710.167.79.134/3210.167.79.134 – 10.167.79.13410.167.79.134
810.167.79.135/3210.167.79.135 – 10.167.79.13510.167.79.135
910.167.79.136/3210.167.79.136 – 10.167.79.13610.167.79.136
1010.167.79.137/3210.167.79.137 – 10.167.79.13710.167.79.137
1110.167.79.138/3210.167.79.138 – 10.167.79.13810.167.79.138
1210.167.79.139/3210.167.79.139 – 10.167.79.13910.167.79.139
1310.167.79.140/3210.167.79.140 – 10.167.79.14010.167.79.140
1410.167.79.141/3210.167.79.141 – 10.167.79.14110.167.79.141
1510.167.79.142/3210.167.79.142 – 10.167.79.14210.167.79.142
1610.167.79.143/3210.167.79.143 – 10.167.79.14310.167.79.143
1710.167.79.144/3210.167.79.144 – 10.167.79.14410.167.79.144
1810.167.79.145/3210.167.79.145 – 10.167.79.14510.167.79.145
1910.167.79.146/3210.167.79.146 – 10.167.79.14610.167.79.146
2010.167.79.147/3210.167.79.147 – 10.167.79.14710.167.79.147
2110.167.79.148/3210.167.79.148 – 10.167.79.14810.167.79.148
2210.167.79.149/3210.167.79.149 – 10.167.79.14910.167.79.149
2310.167.79.150/3210.167.79.150 – 10.167.79.15010.167.79.150
2410.167.79.151/3210.167.79.151 – 10.167.79.15110.167.79.151
2510.167.79.152/3210.167.79.152 – 10.167.79.15210.167.79.152
2610.167.79.153/3210.167.79.153 – 10.167.79.15310.167.79.153
2710.167.79.154/3210.167.79.154 – 10.167.79.15410.167.79.154
2810.167.79.155/3210.167.79.155 – 10.167.79.15510.167.79.155
2910.167.79.156/3210.167.79.156 – 10.167.79.15610.167.79.156
3010.167.79.157/3210.167.79.157 – 10.167.79.15710.167.79.157
3110.167.79.158/3210.167.79.158 – 10.167.79.15810.167.79.158
3210.167.79.159/3210.167.79.159 – 10.167.79.15910.167.79.159
3310.167.79.160/3210.167.79.160 – 10.167.79.16010.167.79.160
3410.167.79.161/3210.167.79.161 – 10.167.79.16110.167.79.161
3510.167.79.162/3210.167.79.162 – 10.167.79.16210.167.79.162
3610.167.79.163/3210.167.79.163 – 10.167.79.16310.167.79.163
3710.167.79.164/3210.167.79.164 – 10.167.79.16410.167.79.164
3810.167.79.165/3210.167.79.165 – 10.167.79.16510.167.79.165
3910.167.79.166/3210.167.79.166 – 10.167.79.16610.167.79.166
4010.167.79.167/3210.167.79.167 – 10.167.79.16710.167.79.167
4110.167.79.168/3210.167.79.168 – 10.167.79.16810.167.79.168
4210.167.79.169/3210.167.79.169 – 10.167.79.16910.167.79.169
4310.167.79.170/3210.167.79.170 – 10.167.79.17010.167.79.170
4410.167.79.171/3210.167.79.171 – 10.167.79.17110.167.79.171
4510.167.79.172/3210.167.79.172 – 10.167.79.17210.167.79.172
4610.167.79.173/3210.167.79.173 – 10.167.79.17310.167.79.173
4710.167.79.174/3210.167.79.174 – 10.167.79.17410.167.79.174
4810.167.79.175/3210.167.79.175 – 10.167.79.17510.167.79.175
4910.167.79.176/3210.167.79.176 – 10.167.79.17610.167.79.176
5010.167.79.177/3210.167.79.177 – 10.167.79.17710.167.79.177
5110.167.79.178/3210.167.79.178 – 10.167.79.17810.167.79.178
5210.167.79.179/3210.167.79.179 – 10.167.79.17910.167.79.179
5310.167.79.180/3210.167.79.180 – 10.167.79.18010.167.79.180
5410.167.79.181/3210.167.79.181 – 10.167.79.18110.167.79.181
5510.167.79.182/3210.167.79.182 – 10.167.79.18210.167.79.182
5610.167.79.183/3210.167.79.183 – 10.167.79.18310.167.79.183
5710.167.79.184/3210.167.79.184 – 10.167.79.18410.167.79.184
5810.167.79.185/3210.167.79.185 – 10.167.79.18510.167.79.185
5910.167.79.186/3210.167.79.186 – 10.167.79.18610.167.79.186
6010.167.79.187/3210.167.79.187 – 10.167.79.18710.167.79.187
6110.167.79.188/3210.167.79.188 – 10.167.79.18810.167.79.188
6210.167.79.189/3210.167.79.189 – 10.167.79.18910.167.79.189
6310.167.79.190/3210.167.79.190 – 10.167.79.19010.167.79.190
6410.167.79.191/3210.167.79.191 – 10.167.79.19110.167.79.191
6510.167.79.192/3210.167.79.192 – 10.167.79.19210.167.79.192
6610.167.79.193/3210.167.79.193 – 10.167.79.19310.167.79.193
6710.167.79.194/3210.167.79.194 – 10.167.79.19410.167.79.194
6810.167.79.195/3210.167.79.195 – 10.167.79.19510.167.79.195
6910.167.79.196/3210.167.79.196 – 10.167.79.19610.167.79.196
7010.167.79.197/3210.167.79.197 – 10.167.79.19710.167.79.197
7110.167.79.198/3210.167.79.198 – 10.167.79.19810.167.79.198
7210.167.79.199/3210.167.79.199 – 10.167.79.19910.167.79.199
7310.167.79.200/3210.167.79.200 – 10.167.79.20010.167.79.200
7410.167.79.201/3210.167.79.201 – 10.167.79.20110.167.79.201
7510.167.79.202/3210.167.79.202 – 10.167.79.20210.167.79.202
7610.167.79.203/3210.167.79.203 – 10.167.79.20310.167.79.203
7710.167.79.204/3210.167.79.204 – 10.167.79.20410.167.79.204
7810.167.79.205/3210.167.79.205 – 10.167.79.20510.167.79.205
7910.167.79.206/3210.167.79.206 – 10.167.79.20610.167.79.206
8010.167.79.207/3210.167.79.207 – 10.167.79.20710.167.79.207
8110.167.79.208/3210.167.79.208 – 10.167.79.20810.167.79.208
8210.167.79.209/3210.167.79.209 – 10.167.79.20910.167.79.209
8310.167.79.210/3210.167.79.210 – 10.167.79.21010.167.79.210
8410.167.79.211/3210.167.79.211 – 10.167.79.21110.167.79.211
8510.167.79.212/3210.167.79.212 – 10.167.79.21210.167.79.212
8610.167.79.213/3210.167.79.213 – 10.167.79.21310.167.79.213
8710.167.79.214/3210.167.79.214 – 10.167.79.21410.167.79.214
8810.167.79.215/3210.167.79.215 – 10.167.79.21510.167.79.215
8910.167.79.216/3210.167.79.216 – 10.167.79.21610.167.79.216
9010.167.79.217/3210.167.79.217 – 10.167.79.21710.167.79.217
9110.167.79.218/3210.167.79.218 – 10.167.79.21810.167.79.218
9210.167.79.219/3210.167.79.219 – 10.167.79.21910.167.79.219
9310.167.79.220/3210.167.79.220 – 10.167.79.22010.167.79.220
9410.167.79.221/3210.167.79.221 – 10.167.79.22110.167.79.221
9510.167.79.222/3210.167.79.222 – 10.167.79.22210.167.79.222
9610.167.79.223/3210.167.79.223 – 10.167.79.22310.167.79.223
9710.167.79.224/3210.167.79.224 – 10.167.79.22410.167.79.224
9810.167.79.225/3210.167.79.225 – 10.167.79.22510.167.79.225
9910.167.79.226/3210.167.79.226 – 10.167.79.22610.167.79.226
10010.167.79.227/3210.167.79.227 – 10.167.79.22710.167.79.227
10110.167.79.228/3210.167.79.228 – 10.167.79.22810.167.79.228
10210.167.79.229/3210.167.79.229 – 10.167.79.22910.167.79.229
10310.167.79.230/3210.167.79.230 – 10.167.79.23010.167.79.230
10410.167.79.231/3210.167.79.231 – 10.167.79.23110.167.79.231
10510.167.79.232/3210.167.79.232 – 10.167.79.23210.167.79.232
10610.167.79.233/3210.167.79.233 – 10.167.79.23310.167.79.233
10710.167.79.234/3210.167.79.234 – 10.167.79.23410.167.79.234
10810.167.79.235/3210.167.79.235 – 10.167.79.23510.167.79.235
10910.167.79.236/3210.167.79.236 – 10.167.79.23610.167.79.236
11010.167.79.237/3210.167.79.237 – 10.167.79.23710.167.79.237
11110.167.79.238/3210.167.79.238 – 10.167.79.23810.167.79.238
11210.167.79.239/3210.167.79.239 – 10.167.79.23910.167.79.239
11310.167.79.240/3210.167.79.240 – 10.167.79.24010.167.79.240
11410.167.79.241/3210.167.79.241 – 10.167.79.24110.167.79.241
11510.167.79.242/3210.167.79.242 – 10.167.79.24210.167.79.242
11610.167.79.243/3210.167.79.243 – 10.167.79.24310.167.79.243
11710.167.79.244/3210.167.79.244 – 10.167.79.24410.167.79.244
11810.167.79.245/3210.167.79.245 – 10.167.79.24510.167.79.245
11910.167.79.246/3210.167.79.246 – 10.167.79.24610.167.79.246
12010.167.79.247/3210.167.79.247 – 10.167.79.24710.167.79.247
12110.167.79.248/3210.167.79.248 – 10.167.79.24810.167.79.248
12210.167.79.249/3210.167.79.249 – 10.167.79.24910.167.79.249
12310.167.79.250/3210.167.79.250 – 10.167.79.25010.167.79.250
12410.167.79.251/3210.167.79.251 – 10.167.79.25110.167.79.251
12510.167.79.252/3210.167.79.252 – 10.167.79.25210.167.79.252
12610.167.79.253/3210.167.79.253 – 10.167.79.25310.167.79.253
12710.167.79.254/3210.167.79.254 – 10.167.79.25410.167.79.254
12810.167.79.255/3210.167.79.255 – 10.167.79.25510.167.79.255
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 →