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)10.167.107.128/25
network10.167.107.128/25
broadcast10.167.107.255
first host10.167.107.129
last host10.167.107.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.107.128/25
address00001010.10100111.01101011.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.01101011.10000000
broadcast00001010.10100111.01101011.11111111
green = network part, grey = host part
hex0x0aa76b80
decimal178744192
reverse dns128.107.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:6b80

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.107.128/3210.167.107.128 – 10.167.107.12810.167.107.128
210.167.107.129/3210.167.107.129 – 10.167.107.12910.167.107.129
310.167.107.130/3210.167.107.130 – 10.167.107.13010.167.107.130
410.167.107.131/3210.167.107.131 – 10.167.107.13110.167.107.131
510.167.107.132/3210.167.107.132 – 10.167.107.13210.167.107.132
610.167.107.133/3210.167.107.133 – 10.167.107.13310.167.107.133
710.167.107.134/3210.167.107.134 – 10.167.107.13410.167.107.134
810.167.107.135/3210.167.107.135 – 10.167.107.13510.167.107.135
910.167.107.136/3210.167.107.136 – 10.167.107.13610.167.107.136
1010.167.107.137/3210.167.107.137 – 10.167.107.13710.167.107.137
1110.167.107.138/3210.167.107.138 – 10.167.107.13810.167.107.138
1210.167.107.139/3210.167.107.139 – 10.167.107.13910.167.107.139
1310.167.107.140/3210.167.107.140 – 10.167.107.14010.167.107.140
1410.167.107.141/3210.167.107.141 – 10.167.107.14110.167.107.141
1510.167.107.142/3210.167.107.142 – 10.167.107.14210.167.107.142
1610.167.107.143/3210.167.107.143 – 10.167.107.14310.167.107.143
1710.167.107.144/3210.167.107.144 – 10.167.107.14410.167.107.144
1810.167.107.145/3210.167.107.145 – 10.167.107.14510.167.107.145
1910.167.107.146/3210.167.107.146 – 10.167.107.14610.167.107.146
2010.167.107.147/3210.167.107.147 – 10.167.107.14710.167.107.147
2110.167.107.148/3210.167.107.148 – 10.167.107.14810.167.107.148
2210.167.107.149/3210.167.107.149 – 10.167.107.14910.167.107.149
2310.167.107.150/3210.167.107.150 – 10.167.107.15010.167.107.150
2410.167.107.151/3210.167.107.151 – 10.167.107.15110.167.107.151
2510.167.107.152/3210.167.107.152 – 10.167.107.15210.167.107.152
2610.167.107.153/3210.167.107.153 – 10.167.107.15310.167.107.153
2710.167.107.154/3210.167.107.154 – 10.167.107.15410.167.107.154
2810.167.107.155/3210.167.107.155 – 10.167.107.15510.167.107.155
2910.167.107.156/3210.167.107.156 – 10.167.107.15610.167.107.156
3010.167.107.157/3210.167.107.157 – 10.167.107.15710.167.107.157
3110.167.107.158/3210.167.107.158 – 10.167.107.15810.167.107.158
3210.167.107.159/3210.167.107.159 – 10.167.107.15910.167.107.159
3310.167.107.160/3210.167.107.160 – 10.167.107.16010.167.107.160
3410.167.107.161/3210.167.107.161 – 10.167.107.16110.167.107.161
3510.167.107.162/3210.167.107.162 – 10.167.107.16210.167.107.162
3610.167.107.163/3210.167.107.163 – 10.167.107.16310.167.107.163
3710.167.107.164/3210.167.107.164 – 10.167.107.16410.167.107.164
3810.167.107.165/3210.167.107.165 – 10.167.107.16510.167.107.165
3910.167.107.166/3210.167.107.166 – 10.167.107.16610.167.107.166
4010.167.107.167/3210.167.107.167 – 10.167.107.16710.167.107.167
4110.167.107.168/3210.167.107.168 – 10.167.107.16810.167.107.168
4210.167.107.169/3210.167.107.169 – 10.167.107.16910.167.107.169
4310.167.107.170/3210.167.107.170 – 10.167.107.17010.167.107.170
4410.167.107.171/3210.167.107.171 – 10.167.107.17110.167.107.171
4510.167.107.172/3210.167.107.172 – 10.167.107.17210.167.107.172
4610.167.107.173/3210.167.107.173 – 10.167.107.17310.167.107.173
4710.167.107.174/3210.167.107.174 – 10.167.107.17410.167.107.174
4810.167.107.175/3210.167.107.175 – 10.167.107.17510.167.107.175
4910.167.107.176/3210.167.107.176 – 10.167.107.17610.167.107.176
5010.167.107.177/3210.167.107.177 – 10.167.107.17710.167.107.177
5110.167.107.178/3210.167.107.178 – 10.167.107.17810.167.107.178
5210.167.107.179/3210.167.107.179 – 10.167.107.17910.167.107.179
5310.167.107.180/3210.167.107.180 – 10.167.107.18010.167.107.180
5410.167.107.181/3210.167.107.181 – 10.167.107.18110.167.107.181
5510.167.107.182/3210.167.107.182 – 10.167.107.18210.167.107.182
5610.167.107.183/3210.167.107.183 – 10.167.107.18310.167.107.183
5710.167.107.184/3210.167.107.184 – 10.167.107.18410.167.107.184
5810.167.107.185/3210.167.107.185 – 10.167.107.18510.167.107.185
5910.167.107.186/3210.167.107.186 – 10.167.107.18610.167.107.186
6010.167.107.187/3210.167.107.187 – 10.167.107.18710.167.107.187
6110.167.107.188/3210.167.107.188 – 10.167.107.18810.167.107.188
6210.167.107.189/3210.167.107.189 – 10.167.107.18910.167.107.189
6310.167.107.190/3210.167.107.190 – 10.167.107.19010.167.107.190
6410.167.107.191/3210.167.107.191 – 10.167.107.19110.167.107.191
6510.167.107.192/3210.167.107.192 – 10.167.107.19210.167.107.192
6610.167.107.193/3210.167.107.193 – 10.167.107.19310.167.107.193
6710.167.107.194/3210.167.107.194 – 10.167.107.19410.167.107.194
6810.167.107.195/3210.167.107.195 – 10.167.107.19510.167.107.195
6910.167.107.196/3210.167.107.196 – 10.167.107.19610.167.107.196
7010.167.107.197/3210.167.107.197 – 10.167.107.19710.167.107.197
7110.167.107.198/3210.167.107.198 – 10.167.107.19810.167.107.198
7210.167.107.199/3210.167.107.199 – 10.167.107.19910.167.107.199
7310.167.107.200/3210.167.107.200 – 10.167.107.20010.167.107.200
7410.167.107.201/3210.167.107.201 – 10.167.107.20110.167.107.201
7510.167.107.202/3210.167.107.202 – 10.167.107.20210.167.107.202
7610.167.107.203/3210.167.107.203 – 10.167.107.20310.167.107.203
7710.167.107.204/3210.167.107.204 – 10.167.107.20410.167.107.204
7810.167.107.205/3210.167.107.205 – 10.167.107.20510.167.107.205
7910.167.107.206/3210.167.107.206 – 10.167.107.20610.167.107.206
8010.167.107.207/3210.167.107.207 – 10.167.107.20710.167.107.207
8110.167.107.208/3210.167.107.208 – 10.167.107.20810.167.107.208
8210.167.107.209/3210.167.107.209 – 10.167.107.20910.167.107.209
8310.167.107.210/3210.167.107.210 – 10.167.107.21010.167.107.210
8410.167.107.211/3210.167.107.211 – 10.167.107.21110.167.107.211
8510.167.107.212/3210.167.107.212 – 10.167.107.21210.167.107.212
8610.167.107.213/3210.167.107.213 – 10.167.107.21310.167.107.213
8710.167.107.214/3210.167.107.214 – 10.167.107.21410.167.107.214
8810.167.107.215/3210.167.107.215 – 10.167.107.21510.167.107.215
8910.167.107.216/3210.167.107.216 – 10.167.107.21610.167.107.216
9010.167.107.217/3210.167.107.217 – 10.167.107.21710.167.107.217
9110.167.107.218/3210.167.107.218 – 10.167.107.21810.167.107.218
9210.167.107.219/3210.167.107.219 – 10.167.107.21910.167.107.219
9310.167.107.220/3210.167.107.220 – 10.167.107.22010.167.107.220
9410.167.107.221/3210.167.107.221 – 10.167.107.22110.167.107.221
9510.167.107.222/3210.167.107.222 – 10.167.107.22210.167.107.222
9610.167.107.223/3210.167.107.223 – 10.167.107.22310.167.107.223
9710.167.107.224/3210.167.107.224 – 10.167.107.22410.167.107.224
9810.167.107.225/3210.167.107.225 – 10.167.107.22510.167.107.225
9910.167.107.226/3210.167.107.226 – 10.167.107.22610.167.107.226
10010.167.107.227/3210.167.107.227 – 10.167.107.22710.167.107.227
10110.167.107.228/3210.167.107.228 – 10.167.107.22810.167.107.228
10210.167.107.229/3210.167.107.229 – 10.167.107.22910.167.107.229
10310.167.107.230/3210.167.107.230 – 10.167.107.23010.167.107.230
10410.167.107.231/3210.167.107.231 – 10.167.107.23110.167.107.231
10510.167.107.232/3210.167.107.232 – 10.167.107.23210.167.107.232
10610.167.107.233/3210.167.107.233 – 10.167.107.23310.167.107.233
10710.167.107.234/3210.167.107.234 – 10.167.107.23410.167.107.234
10810.167.107.235/3210.167.107.235 – 10.167.107.23510.167.107.235
10910.167.107.236/3210.167.107.236 – 10.167.107.23610.167.107.236
11010.167.107.237/3210.167.107.237 – 10.167.107.23710.167.107.237
11110.167.107.238/3210.167.107.238 – 10.167.107.23810.167.107.238
11210.167.107.239/3210.167.107.239 – 10.167.107.23910.167.107.239
11310.167.107.240/3210.167.107.240 – 10.167.107.24010.167.107.240
11410.167.107.241/3210.167.107.241 – 10.167.107.24110.167.107.241
11510.167.107.242/3210.167.107.242 – 10.167.107.24210.167.107.242
11610.167.107.243/3210.167.107.243 – 10.167.107.24310.167.107.243
11710.167.107.244/3210.167.107.244 – 10.167.107.24410.167.107.244
11810.167.107.245/3210.167.107.245 – 10.167.107.24510.167.107.245
11910.167.107.246/3210.167.107.246 – 10.167.107.24610.167.107.246
12010.167.107.247/3210.167.107.247 – 10.167.107.24710.167.107.247
12110.167.107.248/3210.167.107.248 – 10.167.107.24810.167.107.248
12210.167.107.249/3210.167.107.249 – 10.167.107.24910.167.107.249
12310.167.107.250/3210.167.107.250 – 10.167.107.25010.167.107.250
12410.167.107.251/3210.167.107.251 – 10.167.107.25110.167.107.251
12510.167.107.252/3210.167.107.252 – 10.167.107.25210.167.107.252
12610.167.107.253/3210.167.107.253 – 10.167.107.25310.167.107.253
12710.167.107.254/3210.167.107.254 – 10.167.107.25410.167.107.254
12810.167.107.255/3210.167.107.255 – 10.167.107.25510.167.107.255
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 →