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)10.78.86.128/25
network10.78.86.128/25
broadcast10.78.86.255
first host10.78.86.129
last host10.78.86.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.78.86.128/25
address00001010.01001110.01010110.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.01001110.01010110.10000000
broadcast00001010.01001110.01010110.11111111
green = network part, grey = host part
hex0x0a4e5680
decimal172906112
reverse dns128.86.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:5680

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.86.128/3210.78.86.128 – 10.78.86.12810.78.86.128
210.78.86.129/3210.78.86.129 – 10.78.86.12910.78.86.129
310.78.86.130/3210.78.86.130 – 10.78.86.13010.78.86.130
410.78.86.131/3210.78.86.131 – 10.78.86.13110.78.86.131
510.78.86.132/3210.78.86.132 – 10.78.86.13210.78.86.132
610.78.86.133/3210.78.86.133 – 10.78.86.13310.78.86.133
710.78.86.134/3210.78.86.134 – 10.78.86.13410.78.86.134
810.78.86.135/3210.78.86.135 – 10.78.86.13510.78.86.135
910.78.86.136/3210.78.86.136 – 10.78.86.13610.78.86.136
1010.78.86.137/3210.78.86.137 – 10.78.86.13710.78.86.137
1110.78.86.138/3210.78.86.138 – 10.78.86.13810.78.86.138
1210.78.86.139/3210.78.86.139 – 10.78.86.13910.78.86.139
1310.78.86.140/3210.78.86.140 – 10.78.86.14010.78.86.140
1410.78.86.141/3210.78.86.141 – 10.78.86.14110.78.86.141
1510.78.86.142/3210.78.86.142 – 10.78.86.14210.78.86.142
1610.78.86.143/3210.78.86.143 – 10.78.86.14310.78.86.143
1710.78.86.144/3210.78.86.144 – 10.78.86.14410.78.86.144
1810.78.86.145/3210.78.86.145 – 10.78.86.14510.78.86.145
1910.78.86.146/3210.78.86.146 – 10.78.86.14610.78.86.146
2010.78.86.147/3210.78.86.147 – 10.78.86.14710.78.86.147
2110.78.86.148/3210.78.86.148 – 10.78.86.14810.78.86.148
2210.78.86.149/3210.78.86.149 – 10.78.86.14910.78.86.149
2310.78.86.150/3210.78.86.150 – 10.78.86.15010.78.86.150
2410.78.86.151/3210.78.86.151 – 10.78.86.15110.78.86.151
2510.78.86.152/3210.78.86.152 – 10.78.86.15210.78.86.152
2610.78.86.153/3210.78.86.153 – 10.78.86.15310.78.86.153
2710.78.86.154/3210.78.86.154 – 10.78.86.15410.78.86.154
2810.78.86.155/3210.78.86.155 – 10.78.86.15510.78.86.155
2910.78.86.156/3210.78.86.156 – 10.78.86.15610.78.86.156
3010.78.86.157/3210.78.86.157 – 10.78.86.15710.78.86.157
3110.78.86.158/3210.78.86.158 – 10.78.86.15810.78.86.158
3210.78.86.159/3210.78.86.159 – 10.78.86.15910.78.86.159
3310.78.86.160/3210.78.86.160 – 10.78.86.16010.78.86.160
3410.78.86.161/3210.78.86.161 – 10.78.86.16110.78.86.161
3510.78.86.162/3210.78.86.162 – 10.78.86.16210.78.86.162
3610.78.86.163/3210.78.86.163 – 10.78.86.16310.78.86.163
3710.78.86.164/3210.78.86.164 – 10.78.86.16410.78.86.164
3810.78.86.165/3210.78.86.165 – 10.78.86.16510.78.86.165
3910.78.86.166/3210.78.86.166 – 10.78.86.16610.78.86.166
4010.78.86.167/3210.78.86.167 – 10.78.86.16710.78.86.167
4110.78.86.168/3210.78.86.168 – 10.78.86.16810.78.86.168
4210.78.86.169/3210.78.86.169 – 10.78.86.16910.78.86.169
4310.78.86.170/3210.78.86.170 – 10.78.86.17010.78.86.170
4410.78.86.171/3210.78.86.171 – 10.78.86.17110.78.86.171
4510.78.86.172/3210.78.86.172 – 10.78.86.17210.78.86.172
4610.78.86.173/3210.78.86.173 – 10.78.86.17310.78.86.173
4710.78.86.174/3210.78.86.174 – 10.78.86.17410.78.86.174
4810.78.86.175/3210.78.86.175 – 10.78.86.17510.78.86.175
4910.78.86.176/3210.78.86.176 – 10.78.86.17610.78.86.176
5010.78.86.177/3210.78.86.177 – 10.78.86.17710.78.86.177
5110.78.86.178/3210.78.86.178 – 10.78.86.17810.78.86.178
5210.78.86.179/3210.78.86.179 – 10.78.86.17910.78.86.179
5310.78.86.180/3210.78.86.180 – 10.78.86.18010.78.86.180
5410.78.86.181/3210.78.86.181 – 10.78.86.18110.78.86.181
5510.78.86.182/3210.78.86.182 – 10.78.86.18210.78.86.182
5610.78.86.183/3210.78.86.183 – 10.78.86.18310.78.86.183
5710.78.86.184/3210.78.86.184 – 10.78.86.18410.78.86.184
5810.78.86.185/3210.78.86.185 – 10.78.86.18510.78.86.185
5910.78.86.186/3210.78.86.186 – 10.78.86.18610.78.86.186
6010.78.86.187/3210.78.86.187 – 10.78.86.18710.78.86.187
6110.78.86.188/3210.78.86.188 – 10.78.86.18810.78.86.188
6210.78.86.189/3210.78.86.189 – 10.78.86.18910.78.86.189
6310.78.86.190/3210.78.86.190 – 10.78.86.19010.78.86.190
6410.78.86.191/3210.78.86.191 – 10.78.86.19110.78.86.191
6510.78.86.192/3210.78.86.192 – 10.78.86.19210.78.86.192
6610.78.86.193/3210.78.86.193 – 10.78.86.19310.78.86.193
6710.78.86.194/3210.78.86.194 – 10.78.86.19410.78.86.194
6810.78.86.195/3210.78.86.195 – 10.78.86.19510.78.86.195
6910.78.86.196/3210.78.86.196 – 10.78.86.19610.78.86.196
7010.78.86.197/3210.78.86.197 – 10.78.86.19710.78.86.197
7110.78.86.198/3210.78.86.198 – 10.78.86.19810.78.86.198
7210.78.86.199/3210.78.86.199 – 10.78.86.19910.78.86.199
7310.78.86.200/3210.78.86.200 – 10.78.86.20010.78.86.200
7410.78.86.201/3210.78.86.201 – 10.78.86.20110.78.86.201
7510.78.86.202/3210.78.86.202 – 10.78.86.20210.78.86.202
7610.78.86.203/3210.78.86.203 – 10.78.86.20310.78.86.203
7710.78.86.204/3210.78.86.204 – 10.78.86.20410.78.86.204
7810.78.86.205/3210.78.86.205 – 10.78.86.20510.78.86.205
7910.78.86.206/3210.78.86.206 – 10.78.86.20610.78.86.206
8010.78.86.207/3210.78.86.207 – 10.78.86.20710.78.86.207
8110.78.86.208/3210.78.86.208 – 10.78.86.20810.78.86.208
8210.78.86.209/3210.78.86.209 – 10.78.86.20910.78.86.209
8310.78.86.210/3210.78.86.210 – 10.78.86.21010.78.86.210
8410.78.86.211/3210.78.86.211 – 10.78.86.21110.78.86.211
8510.78.86.212/3210.78.86.212 – 10.78.86.21210.78.86.212
8610.78.86.213/3210.78.86.213 – 10.78.86.21310.78.86.213
8710.78.86.214/3210.78.86.214 – 10.78.86.21410.78.86.214
8810.78.86.215/3210.78.86.215 – 10.78.86.21510.78.86.215
8910.78.86.216/3210.78.86.216 – 10.78.86.21610.78.86.216
9010.78.86.217/3210.78.86.217 – 10.78.86.21710.78.86.217
9110.78.86.218/3210.78.86.218 – 10.78.86.21810.78.86.218
9210.78.86.219/3210.78.86.219 – 10.78.86.21910.78.86.219
9310.78.86.220/3210.78.86.220 – 10.78.86.22010.78.86.220
9410.78.86.221/3210.78.86.221 – 10.78.86.22110.78.86.221
9510.78.86.222/3210.78.86.222 – 10.78.86.22210.78.86.222
9610.78.86.223/3210.78.86.223 – 10.78.86.22310.78.86.223
9710.78.86.224/3210.78.86.224 – 10.78.86.22410.78.86.224
9810.78.86.225/3210.78.86.225 – 10.78.86.22510.78.86.225
9910.78.86.226/3210.78.86.226 – 10.78.86.22610.78.86.226
10010.78.86.227/3210.78.86.227 – 10.78.86.22710.78.86.227
10110.78.86.228/3210.78.86.228 – 10.78.86.22810.78.86.228
10210.78.86.229/3210.78.86.229 – 10.78.86.22910.78.86.229
10310.78.86.230/3210.78.86.230 – 10.78.86.23010.78.86.230
10410.78.86.231/3210.78.86.231 – 10.78.86.23110.78.86.231
10510.78.86.232/3210.78.86.232 – 10.78.86.23210.78.86.232
10610.78.86.233/3210.78.86.233 – 10.78.86.23310.78.86.233
10710.78.86.234/3210.78.86.234 – 10.78.86.23410.78.86.234
10810.78.86.235/3210.78.86.235 – 10.78.86.23510.78.86.235
10910.78.86.236/3210.78.86.236 – 10.78.86.23610.78.86.236
11010.78.86.237/3210.78.86.237 – 10.78.86.23710.78.86.237
11110.78.86.238/3210.78.86.238 – 10.78.86.23810.78.86.238
11210.78.86.239/3210.78.86.239 – 10.78.86.23910.78.86.239
11310.78.86.240/3210.78.86.240 – 10.78.86.24010.78.86.240
11410.78.86.241/3210.78.86.241 – 10.78.86.24110.78.86.241
11510.78.86.242/3210.78.86.242 – 10.78.86.24210.78.86.242
11610.78.86.243/3210.78.86.243 – 10.78.86.24310.78.86.243
11710.78.86.244/3210.78.86.244 – 10.78.86.24410.78.86.244
11810.78.86.245/3210.78.86.245 – 10.78.86.24510.78.86.245
11910.78.86.246/3210.78.86.246 – 10.78.86.24610.78.86.246
12010.78.86.247/3210.78.86.247 – 10.78.86.24710.78.86.247
12110.78.86.248/3210.78.86.248 – 10.78.86.24810.78.86.248
12210.78.86.249/3210.78.86.249 – 10.78.86.24910.78.86.249
12310.78.86.250/3210.78.86.250 – 10.78.86.25010.78.86.250
12410.78.86.251/3210.78.86.251 – 10.78.86.25110.78.86.251
12510.78.86.252/3210.78.86.252 – 10.78.86.25210.78.86.252
12610.78.86.253/3210.78.86.253 – 10.78.86.25310.78.86.253
12710.78.86.254/3210.78.86.254 – 10.78.86.25410.78.86.254
12810.78.86.255/3210.78.86.255 – 10.78.86.25510.78.86.255
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 →