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)10.167.111.128/25
network10.167.111.128/25
broadcast10.167.111.255
first host10.167.111.129
last host10.167.111.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.111.128/25
address00001010.10100111.01101111.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.01101111.10000000
broadcast00001010.10100111.01101111.11111111
green = network part, grey = host part
hex0x0aa76f80
decimal178745216
reverse dns128.111.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:6f80

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.111.128/3210.167.111.128 – 10.167.111.12810.167.111.128
210.167.111.129/3210.167.111.129 – 10.167.111.12910.167.111.129
310.167.111.130/3210.167.111.130 – 10.167.111.13010.167.111.130
410.167.111.131/3210.167.111.131 – 10.167.111.13110.167.111.131
510.167.111.132/3210.167.111.132 – 10.167.111.13210.167.111.132
610.167.111.133/3210.167.111.133 – 10.167.111.13310.167.111.133
710.167.111.134/3210.167.111.134 – 10.167.111.13410.167.111.134
810.167.111.135/3210.167.111.135 – 10.167.111.13510.167.111.135
910.167.111.136/3210.167.111.136 – 10.167.111.13610.167.111.136
1010.167.111.137/3210.167.111.137 – 10.167.111.13710.167.111.137
1110.167.111.138/3210.167.111.138 – 10.167.111.13810.167.111.138
1210.167.111.139/3210.167.111.139 – 10.167.111.13910.167.111.139
1310.167.111.140/3210.167.111.140 – 10.167.111.14010.167.111.140
1410.167.111.141/3210.167.111.141 – 10.167.111.14110.167.111.141
1510.167.111.142/3210.167.111.142 – 10.167.111.14210.167.111.142
1610.167.111.143/3210.167.111.143 – 10.167.111.14310.167.111.143
1710.167.111.144/3210.167.111.144 – 10.167.111.14410.167.111.144
1810.167.111.145/3210.167.111.145 – 10.167.111.14510.167.111.145
1910.167.111.146/3210.167.111.146 – 10.167.111.14610.167.111.146
2010.167.111.147/3210.167.111.147 – 10.167.111.14710.167.111.147
2110.167.111.148/3210.167.111.148 – 10.167.111.14810.167.111.148
2210.167.111.149/3210.167.111.149 – 10.167.111.14910.167.111.149
2310.167.111.150/3210.167.111.150 – 10.167.111.15010.167.111.150
2410.167.111.151/3210.167.111.151 – 10.167.111.15110.167.111.151
2510.167.111.152/3210.167.111.152 – 10.167.111.15210.167.111.152
2610.167.111.153/3210.167.111.153 – 10.167.111.15310.167.111.153
2710.167.111.154/3210.167.111.154 – 10.167.111.15410.167.111.154
2810.167.111.155/3210.167.111.155 – 10.167.111.15510.167.111.155
2910.167.111.156/3210.167.111.156 – 10.167.111.15610.167.111.156
3010.167.111.157/3210.167.111.157 – 10.167.111.15710.167.111.157
3110.167.111.158/3210.167.111.158 – 10.167.111.15810.167.111.158
3210.167.111.159/3210.167.111.159 – 10.167.111.15910.167.111.159
3310.167.111.160/3210.167.111.160 – 10.167.111.16010.167.111.160
3410.167.111.161/3210.167.111.161 – 10.167.111.16110.167.111.161
3510.167.111.162/3210.167.111.162 – 10.167.111.16210.167.111.162
3610.167.111.163/3210.167.111.163 – 10.167.111.16310.167.111.163
3710.167.111.164/3210.167.111.164 – 10.167.111.16410.167.111.164
3810.167.111.165/3210.167.111.165 – 10.167.111.16510.167.111.165
3910.167.111.166/3210.167.111.166 – 10.167.111.16610.167.111.166
4010.167.111.167/3210.167.111.167 – 10.167.111.16710.167.111.167
4110.167.111.168/3210.167.111.168 – 10.167.111.16810.167.111.168
4210.167.111.169/3210.167.111.169 – 10.167.111.16910.167.111.169
4310.167.111.170/3210.167.111.170 – 10.167.111.17010.167.111.170
4410.167.111.171/3210.167.111.171 – 10.167.111.17110.167.111.171
4510.167.111.172/3210.167.111.172 – 10.167.111.17210.167.111.172
4610.167.111.173/3210.167.111.173 – 10.167.111.17310.167.111.173
4710.167.111.174/3210.167.111.174 – 10.167.111.17410.167.111.174
4810.167.111.175/3210.167.111.175 – 10.167.111.17510.167.111.175
4910.167.111.176/3210.167.111.176 – 10.167.111.17610.167.111.176
5010.167.111.177/3210.167.111.177 – 10.167.111.17710.167.111.177
5110.167.111.178/3210.167.111.178 – 10.167.111.17810.167.111.178
5210.167.111.179/3210.167.111.179 – 10.167.111.17910.167.111.179
5310.167.111.180/3210.167.111.180 – 10.167.111.18010.167.111.180
5410.167.111.181/3210.167.111.181 – 10.167.111.18110.167.111.181
5510.167.111.182/3210.167.111.182 – 10.167.111.18210.167.111.182
5610.167.111.183/3210.167.111.183 – 10.167.111.18310.167.111.183
5710.167.111.184/3210.167.111.184 – 10.167.111.18410.167.111.184
5810.167.111.185/3210.167.111.185 – 10.167.111.18510.167.111.185
5910.167.111.186/3210.167.111.186 – 10.167.111.18610.167.111.186
6010.167.111.187/3210.167.111.187 – 10.167.111.18710.167.111.187
6110.167.111.188/3210.167.111.188 – 10.167.111.18810.167.111.188
6210.167.111.189/3210.167.111.189 – 10.167.111.18910.167.111.189
6310.167.111.190/3210.167.111.190 – 10.167.111.19010.167.111.190
6410.167.111.191/3210.167.111.191 – 10.167.111.19110.167.111.191
6510.167.111.192/3210.167.111.192 – 10.167.111.19210.167.111.192
6610.167.111.193/3210.167.111.193 – 10.167.111.19310.167.111.193
6710.167.111.194/3210.167.111.194 – 10.167.111.19410.167.111.194
6810.167.111.195/3210.167.111.195 – 10.167.111.19510.167.111.195
6910.167.111.196/3210.167.111.196 – 10.167.111.19610.167.111.196
7010.167.111.197/3210.167.111.197 – 10.167.111.19710.167.111.197
7110.167.111.198/3210.167.111.198 – 10.167.111.19810.167.111.198
7210.167.111.199/3210.167.111.199 – 10.167.111.19910.167.111.199
7310.167.111.200/3210.167.111.200 – 10.167.111.20010.167.111.200
7410.167.111.201/3210.167.111.201 – 10.167.111.20110.167.111.201
7510.167.111.202/3210.167.111.202 – 10.167.111.20210.167.111.202
7610.167.111.203/3210.167.111.203 – 10.167.111.20310.167.111.203
7710.167.111.204/3210.167.111.204 – 10.167.111.20410.167.111.204
7810.167.111.205/3210.167.111.205 – 10.167.111.20510.167.111.205
7910.167.111.206/3210.167.111.206 – 10.167.111.20610.167.111.206
8010.167.111.207/3210.167.111.207 – 10.167.111.20710.167.111.207
8110.167.111.208/3210.167.111.208 – 10.167.111.20810.167.111.208
8210.167.111.209/3210.167.111.209 – 10.167.111.20910.167.111.209
8310.167.111.210/3210.167.111.210 – 10.167.111.21010.167.111.210
8410.167.111.211/3210.167.111.211 – 10.167.111.21110.167.111.211
8510.167.111.212/3210.167.111.212 – 10.167.111.21210.167.111.212
8610.167.111.213/3210.167.111.213 – 10.167.111.21310.167.111.213
8710.167.111.214/3210.167.111.214 – 10.167.111.21410.167.111.214
8810.167.111.215/3210.167.111.215 – 10.167.111.21510.167.111.215
8910.167.111.216/3210.167.111.216 – 10.167.111.21610.167.111.216
9010.167.111.217/3210.167.111.217 – 10.167.111.21710.167.111.217
9110.167.111.218/3210.167.111.218 – 10.167.111.21810.167.111.218
9210.167.111.219/3210.167.111.219 – 10.167.111.21910.167.111.219
9310.167.111.220/3210.167.111.220 – 10.167.111.22010.167.111.220
9410.167.111.221/3210.167.111.221 – 10.167.111.22110.167.111.221
9510.167.111.222/3210.167.111.222 – 10.167.111.22210.167.111.222
9610.167.111.223/3210.167.111.223 – 10.167.111.22310.167.111.223
9710.167.111.224/3210.167.111.224 – 10.167.111.22410.167.111.224
9810.167.111.225/3210.167.111.225 – 10.167.111.22510.167.111.225
9910.167.111.226/3210.167.111.226 – 10.167.111.22610.167.111.226
10010.167.111.227/3210.167.111.227 – 10.167.111.22710.167.111.227
10110.167.111.228/3210.167.111.228 – 10.167.111.22810.167.111.228
10210.167.111.229/3210.167.111.229 – 10.167.111.22910.167.111.229
10310.167.111.230/3210.167.111.230 – 10.167.111.23010.167.111.230
10410.167.111.231/3210.167.111.231 – 10.167.111.23110.167.111.231
10510.167.111.232/3210.167.111.232 – 10.167.111.23210.167.111.232
10610.167.111.233/3210.167.111.233 – 10.167.111.23310.167.111.233
10710.167.111.234/3210.167.111.234 – 10.167.111.23410.167.111.234
10810.167.111.235/3210.167.111.235 – 10.167.111.23510.167.111.235
10910.167.111.236/3210.167.111.236 – 10.167.111.23610.167.111.236
11010.167.111.237/3210.167.111.237 – 10.167.111.23710.167.111.237
11110.167.111.238/3210.167.111.238 – 10.167.111.23810.167.111.238
11210.167.111.239/3210.167.111.239 – 10.167.111.23910.167.111.239
11310.167.111.240/3210.167.111.240 – 10.167.111.24010.167.111.240
11410.167.111.241/3210.167.111.241 – 10.167.111.24110.167.111.241
11510.167.111.242/3210.167.111.242 – 10.167.111.24210.167.111.242
11610.167.111.243/3210.167.111.243 – 10.167.111.24310.167.111.243
11710.167.111.244/3210.167.111.244 – 10.167.111.24410.167.111.244
11810.167.111.245/3210.167.111.245 – 10.167.111.24510.167.111.245
11910.167.111.246/3210.167.111.246 – 10.167.111.24610.167.111.246
12010.167.111.247/3210.167.111.247 – 10.167.111.24710.167.111.247
12110.167.111.248/3210.167.111.248 – 10.167.111.24810.167.111.248
12210.167.111.249/3210.167.111.249 – 10.167.111.24910.167.111.249
12310.167.111.250/3210.167.111.250 – 10.167.111.25010.167.111.250
12410.167.111.251/3210.167.111.251 – 10.167.111.25110.167.111.251
12510.167.111.252/3210.167.111.252 – 10.167.111.25210.167.111.252
12610.167.111.253/3210.167.111.253 – 10.167.111.25310.167.111.253
12710.167.111.254/3210.167.111.254 – 10.167.111.25410.167.111.254
12810.167.111.255/3210.167.111.255 – 10.167.111.25510.167.111.255
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 →