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)10.167.110.128/25
network10.167.110.128/25
broadcast10.167.110.255
first host10.167.110.129
last host10.167.110.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.110.128/25
address00001010.10100111.01101110.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.01101110.10000000
broadcast00001010.10100111.01101110.11111111
green = network part, grey = host part
hex0x0aa76e80
decimal178744960
reverse dns128.110.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:6e80

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.110.128/3210.167.110.128 – 10.167.110.12810.167.110.128
210.167.110.129/3210.167.110.129 – 10.167.110.12910.167.110.129
310.167.110.130/3210.167.110.130 – 10.167.110.13010.167.110.130
410.167.110.131/3210.167.110.131 – 10.167.110.13110.167.110.131
510.167.110.132/3210.167.110.132 – 10.167.110.13210.167.110.132
610.167.110.133/3210.167.110.133 – 10.167.110.13310.167.110.133
710.167.110.134/3210.167.110.134 – 10.167.110.13410.167.110.134
810.167.110.135/3210.167.110.135 – 10.167.110.13510.167.110.135
910.167.110.136/3210.167.110.136 – 10.167.110.13610.167.110.136
1010.167.110.137/3210.167.110.137 – 10.167.110.13710.167.110.137
1110.167.110.138/3210.167.110.138 – 10.167.110.13810.167.110.138
1210.167.110.139/3210.167.110.139 – 10.167.110.13910.167.110.139
1310.167.110.140/3210.167.110.140 – 10.167.110.14010.167.110.140
1410.167.110.141/3210.167.110.141 – 10.167.110.14110.167.110.141
1510.167.110.142/3210.167.110.142 – 10.167.110.14210.167.110.142
1610.167.110.143/3210.167.110.143 – 10.167.110.14310.167.110.143
1710.167.110.144/3210.167.110.144 – 10.167.110.14410.167.110.144
1810.167.110.145/3210.167.110.145 – 10.167.110.14510.167.110.145
1910.167.110.146/3210.167.110.146 – 10.167.110.14610.167.110.146
2010.167.110.147/3210.167.110.147 – 10.167.110.14710.167.110.147
2110.167.110.148/3210.167.110.148 – 10.167.110.14810.167.110.148
2210.167.110.149/3210.167.110.149 – 10.167.110.14910.167.110.149
2310.167.110.150/3210.167.110.150 – 10.167.110.15010.167.110.150
2410.167.110.151/3210.167.110.151 – 10.167.110.15110.167.110.151
2510.167.110.152/3210.167.110.152 – 10.167.110.15210.167.110.152
2610.167.110.153/3210.167.110.153 – 10.167.110.15310.167.110.153
2710.167.110.154/3210.167.110.154 – 10.167.110.15410.167.110.154
2810.167.110.155/3210.167.110.155 – 10.167.110.15510.167.110.155
2910.167.110.156/3210.167.110.156 – 10.167.110.15610.167.110.156
3010.167.110.157/3210.167.110.157 – 10.167.110.15710.167.110.157
3110.167.110.158/3210.167.110.158 – 10.167.110.15810.167.110.158
3210.167.110.159/3210.167.110.159 – 10.167.110.15910.167.110.159
3310.167.110.160/3210.167.110.160 – 10.167.110.16010.167.110.160
3410.167.110.161/3210.167.110.161 – 10.167.110.16110.167.110.161
3510.167.110.162/3210.167.110.162 – 10.167.110.16210.167.110.162
3610.167.110.163/3210.167.110.163 – 10.167.110.16310.167.110.163
3710.167.110.164/3210.167.110.164 – 10.167.110.16410.167.110.164
3810.167.110.165/3210.167.110.165 – 10.167.110.16510.167.110.165
3910.167.110.166/3210.167.110.166 – 10.167.110.16610.167.110.166
4010.167.110.167/3210.167.110.167 – 10.167.110.16710.167.110.167
4110.167.110.168/3210.167.110.168 – 10.167.110.16810.167.110.168
4210.167.110.169/3210.167.110.169 – 10.167.110.16910.167.110.169
4310.167.110.170/3210.167.110.170 – 10.167.110.17010.167.110.170
4410.167.110.171/3210.167.110.171 – 10.167.110.17110.167.110.171
4510.167.110.172/3210.167.110.172 – 10.167.110.17210.167.110.172
4610.167.110.173/3210.167.110.173 – 10.167.110.17310.167.110.173
4710.167.110.174/3210.167.110.174 – 10.167.110.17410.167.110.174
4810.167.110.175/3210.167.110.175 – 10.167.110.17510.167.110.175
4910.167.110.176/3210.167.110.176 – 10.167.110.17610.167.110.176
5010.167.110.177/3210.167.110.177 – 10.167.110.17710.167.110.177
5110.167.110.178/3210.167.110.178 – 10.167.110.17810.167.110.178
5210.167.110.179/3210.167.110.179 – 10.167.110.17910.167.110.179
5310.167.110.180/3210.167.110.180 – 10.167.110.18010.167.110.180
5410.167.110.181/3210.167.110.181 – 10.167.110.18110.167.110.181
5510.167.110.182/3210.167.110.182 – 10.167.110.18210.167.110.182
5610.167.110.183/3210.167.110.183 – 10.167.110.18310.167.110.183
5710.167.110.184/3210.167.110.184 – 10.167.110.18410.167.110.184
5810.167.110.185/3210.167.110.185 – 10.167.110.18510.167.110.185
5910.167.110.186/3210.167.110.186 – 10.167.110.18610.167.110.186
6010.167.110.187/3210.167.110.187 – 10.167.110.18710.167.110.187
6110.167.110.188/3210.167.110.188 – 10.167.110.18810.167.110.188
6210.167.110.189/3210.167.110.189 – 10.167.110.18910.167.110.189
6310.167.110.190/3210.167.110.190 – 10.167.110.19010.167.110.190
6410.167.110.191/3210.167.110.191 – 10.167.110.19110.167.110.191
6510.167.110.192/3210.167.110.192 – 10.167.110.19210.167.110.192
6610.167.110.193/3210.167.110.193 – 10.167.110.19310.167.110.193
6710.167.110.194/3210.167.110.194 – 10.167.110.19410.167.110.194
6810.167.110.195/3210.167.110.195 – 10.167.110.19510.167.110.195
6910.167.110.196/3210.167.110.196 – 10.167.110.19610.167.110.196
7010.167.110.197/3210.167.110.197 – 10.167.110.19710.167.110.197
7110.167.110.198/3210.167.110.198 – 10.167.110.19810.167.110.198
7210.167.110.199/3210.167.110.199 – 10.167.110.19910.167.110.199
7310.167.110.200/3210.167.110.200 – 10.167.110.20010.167.110.200
7410.167.110.201/3210.167.110.201 – 10.167.110.20110.167.110.201
7510.167.110.202/3210.167.110.202 – 10.167.110.20210.167.110.202
7610.167.110.203/3210.167.110.203 – 10.167.110.20310.167.110.203
7710.167.110.204/3210.167.110.204 – 10.167.110.20410.167.110.204
7810.167.110.205/3210.167.110.205 – 10.167.110.20510.167.110.205
7910.167.110.206/3210.167.110.206 – 10.167.110.20610.167.110.206
8010.167.110.207/3210.167.110.207 – 10.167.110.20710.167.110.207
8110.167.110.208/3210.167.110.208 – 10.167.110.20810.167.110.208
8210.167.110.209/3210.167.110.209 – 10.167.110.20910.167.110.209
8310.167.110.210/3210.167.110.210 – 10.167.110.21010.167.110.210
8410.167.110.211/3210.167.110.211 – 10.167.110.21110.167.110.211
8510.167.110.212/3210.167.110.212 – 10.167.110.21210.167.110.212
8610.167.110.213/3210.167.110.213 – 10.167.110.21310.167.110.213
8710.167.110.214/3210.167.110.214 – 10.167.110.21410.167.110.214
8810.167.110.215/3210.167.110.215 – 10.167.110.21510.167.110.215
8910.167.110.216/3210.167.110.216 – 10.167.110.21610.167.110.216
9010.167.110.217/3210.167.110.217 – 10.167.110.21710.167.110.217
9110.167.110.218/3210.167.110.218 – 10.167.110.21810.167.110.218
9210.167.110.219/3210.167.110.219 – 10.167.110.21910.167.110.219
9310.167.110.220/3210.167.110.220 – 10.167.110.22010.167.110.220
9410.167.110.221/3210.167.110.221 – 10.167.110.22110.167.110.221
9510.167.110.222/3210.167.110.222 – 10.167.110.22210.167.110.222
9610.167.110.223/3210.167.110.223 – 10.167.110.22310.167.110.223
9710.167.110.224/3210.167.110.224 – 10.167.110.22410.167.110.224
9810.167.110.225/3210.167.110.225 – 10.167.110.22510.167.110.225
9910.167.110.226/3210.167.110.226 – 10.167.110.22610.167.110.226
10010.167.110.227/3210.167.110.227 – 10.167.110.22710.167.110.227
10110.167.110.228/3210.167.110.228 – 10.167.110.22810.167.110.228
10210.167.110.229/3210.167.110.229 – 10.167.110.22910.167.110.229
10310.167.110.230/3210.167.110.230 – 10.167.110.23010.167.110.230
10410.167.110.231/3210.167.110.231 – 10.167.110.23110.167.110.231
10510.167.110.232/3210.167.110.232 – 10.167.110.23210.167.110.232
10610.167.110.233/3210.167.110.233 – 10.167.110.23310.167.110.233
10710.167.110.234/3210.167.110.234 – 10.167.110.23410.167.110.234
10810.167.110.235/3210.167.110.235 – 10.167.110.23510.167.110.235
10910.167.110.236/3210.167.110.236 – 10.167.110.23610.167.110.236
11010.167.110.237/3210.167.110.237 – 10.167.110.23710.167.110.237
11110.167.110.238/3210.167.110.238 – 10.167.110.23810.167.110.238
11210.167.110.239/3210.167.110.239 – 10.167.110.23910.167.110.239
11310.167.110.240/3210.167.110.240 – 10.167.110.24010.167.110.240
11410.167.110.241/3210.167.110.241 – 10.167.110.24110.167.110.241
11510.167.110.242/3210.167.110.242 – 10.167.110.24210.167.110.242
11610.167.110.243/3210.167.110.243 – 10.167.110.24310.167.110.243
11710.167.110.244/3210.167.110.244 – 10.167.110.24410.167.110.244
11810.167.110.245/3210.167.110.245 – 10.167.110.24510.167.110.245
11910.167.110.246/3210.167.110.246 – 10.167.110.24610.167.110.246
12010.167.110.247/3210.167.110.247 – 10.167.110.24710.167.110.247
12110.167.110.248/3210.167.110.248 – 10.167.110.24810.167.110.248
12210.167.110.249/3210.167.110.249 – 10.167.110.24910.167.110.249
12310.167.110.250/3210.167.110.250 – 10.167.110.25010.167.110.250
12410.167.110.251/3210.167.110.251 – 10.167.110.25110.167.110.251
12510.167.110.252/3210.167.110.252 – 10.167.110.25210.167.110.252
12610.167.110.253/3210.167.110.253 – 10.167.110.25310.167.110.253
12710.167.110.254/3210.167.110.254 – 10.167.110.25410.167.110.254
12810.167.110.255/3210.167.110.255 – 10.167.110.25510.167.110.255
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 →