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)10.167.134.128/25
network10.167.134.128/25
broadcast10.167.134.255
first host10.167.134.129
last host10.167.134.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.134.128/25
address00001010.10100111.10000110.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.10000110.10000000
broadcast00001010.10100111.10000110.11111111
green = network part, grey = host part
hex0x0aa78680
decimal178751104
reverse dns128.134.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:8680

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.134.128/3210.167.134.128 – 10.167.134.12810.167.134.128
210.167.134.129/3210.167.134.129 – 10.167.134.12910.167.134.129
310.167.134.130/3210.167.134.130 – 10.167.134.13010.167.134.130
410.167.134.131/3210.167.134.131 – 10.167.134.13110.167.134.131
510.167.134.132/3210.167.134.132 – 10.167.134.13210.167.134.132
610.167.134.133/3210.167.134.133 – 10.167.134.13310.167.134.133
710.167.134.134/3210.167.134.134 – 10.167.134.13410.167.134.134
810.167.134.135/3210.167.134.135 – 10.167.134.13510.167.134.135
910.167.134.136/3210.167.134.136 – 10.167.134.13610.167.134.136
1010.167.134.137/3210.167.134.137 – 10.167.134.13710.167.134.137
1110.167.134.138/3210.167.134.138 – 10.167.134.13810.167.134.138
1210.167.134.139/3210.167.134.139 – 10.167.134.13910.167.134.139
1310.167.134.140/3210.167.134.140 – 10.167.134.14010.167.134.140
1410.167.134.141/3210.167.134.141 – 10.167.134.14110.167.134.141
1510.167.134.142/3210.167.134.142 – 10.167.134.14210.167.134.142
1610.167.134.143/3210.167.134.143 – 10.167.134.14310.167.134.143
1710.167.134.144/3210.167.134.144 – 10.167.134.14410.167.134.144
1810.167.134.145/3210.167.134.145 – 10.167.134.14510.167.134.145
1910.167.134.146/3210.167.134.146 – 10.167.134.14610.167.134.146
2010.167.134.147/3210.167.134.147 – 10.167.134.14710.167.134.147
2110.167.134.148/3210.167.134.148 – 10.167.134.14810.167.134.148
2210.167.134.149/3210.167.134.149 – 10.167.134.14910.167.134.149
2310.167.134.150/3210.167.134.150 – 10.167.134.15010.167.134.150
2410.167.134.151/3210.167.134.151 – 10.167.134.15110.167.134.151
2510.167.134.152/3210.167.134.152 – 10.167.134.15210.167.134.152
2610.167.134.153/3210.167.134.153 – 10.167.134.15310.167.134.153
2710.167.134.154/3210.167.134.154 – 10.167.134.15410.167.134.154
2810.167.134.155/3210.167.134.155 – 10.167.134.15510.167.134.155
2910.167.134.156/3210.167.134.156 – 10.167.134.15610.167.134.156
3010.167.134.157/3210.167.134.157 – 10.167.134.15710.167.134.157
3110.167.134.158/3210.167.134.158 – 10.167.134.15810.167.134.158
3210.167.134.159/3210.167.134.159 – 10.167.134.15910.167.134.159
3310.167.134.160/3210.167.134.160 – 10.167.134.16010.167.134.160
3410.167.134.161/3210.167.134.161 – 10.167.134.16110.167.134.161
3510.167.134.162/3210.167.134.162 – 10.167.134.16210.167.134.162
3610.167.134.163/3210.167.134.163 – 10.167.134.16310.167.134.163
3710.167.134.164/3210.167.134.164 – 10.167.134.16410.167.134.164
3810.167.134.165/3210.167.134.165 – 10.167.134.16510.167.134.165
3910.167.134.166/3210.167.134.166 – 10.167.134.16610.167.134.166
4010.167.134.167/3210.167.134.167 – 10.167.134.16710.167.134.167
4110.167.134.168/3210.167.134.168 – 10.167.134.16810.167.134.168
4210.167.134.169/3210.167.134.169 – 10.167.134.16910.167.134.169
4310.167.134.170/3210.167.134.170 – 10.167.134.17010.167.134.170
4410.167.134.171/3210.167.134.171 – 10.167.134.17110.167.134.171
4510.167.134.172/3210.167.134.172 – 10.167.134.17210.167.134.172
4610.167.134.173/3210.167.134.173 – 10.167.134.17310.167.134.173
4710.167.134.174/3210.167.134.174 – 10.167.134.17410.167.134.174
4810.167.134.175/3210.167.134.175 – 10.167.134.17510.167.134.175
4910.167.134.176/3210.167.134.176 – 10.167.134.17610.167.134.176
5010.167.134.177/3210.167.134.177 – 10.167.134.17710.167.134.177
5110.167.134.178/3210.167.134.178 – 10.167.134.17810.167.134.178
5210.167.134.179/3210.167.134.179 – 10.167.134.17910.167.134.179
5310.167.134.180/3210.167.134.180 – 10.167.134.18010.167.134.180
5410.167.134.181/3210.167.134.181 – 10.167.134.18110.167.134.181
5510.167.134.182/3210.167.134.182 – 10.167.134.18210.167.134.182
5610.167.134.183/3210.167.134.183 – 10.167.134.18310.167.134.183
5710.167.134.184/3210.167.134.184 – 10.167.134.18410.167.134.184
5810.167.134.185/3210.167.134.185 – 10.167.134.18510.167.134.185
5910.167.134.186/3210.167.134.186 – 10.167.134.18610.167.134.186
6010.167.134.187/3210.167.134.187 – 10.167.134.18710.167.134.187
6110.167.134.188/3210.167.134.188 – 10.167.134.18810.167.134.188
6210.167.134.189/3210.167.134.189 – 10.167.134.18910.167.134.189
6310.167.134.190/3210.167.134.190 – 10.167.134.19010.167.134.190
6410.167.134.191/3210.167.134.191 – 10.167.134.19110.167.134.191
6510.167.134.192/3210.167.134.192 – 10.167.134.19210.167.134.192
6610.167.134.193/3210.167.134.193 – 10.167.134.19310.167.134.193
6710.167.134.194/3210.167.134.194 – 10.167.134.19410.167.134.194
6810.167.134.195/3210.167.134.195 – 10.167.134.19510.167.134.195
6910.167.134.196/3210.167.134.196 – 10.167.134.19610.167.134.196
7010.167.134.197/3210.167.134.197 – 10.167.134.19710.167.134.197
7110.167.134.198/3210.167.134.198 – 10.167.134.19810.167.134.198
7210.167.134.199/3210.167.134.199 – 10.167.134.19910.167.134.199
7310.167.134.200/3210.167.134.200 – 10.167.134.20010.167.134.200
7410.167.134.201/3210.167.134.201 – 10.167.134.20110.167.134.201
7510.167.134.202/3210.167.134.202 – 10.167.134.20210.167.134.202
7610.167.134.203/3210.167.134.203 – 10.167.134.20310.167.134.203
7710.167.134.204/3210.167.134.204 – 10.167.134.20410.167.134.204
7810.167.134.205/3210.167.134.205 – 10.167.134.20510.167.134.205
7910.167.134.206/3210.167.134.206 – 10.167.134.20610.167.134.206
8010.167.134.207/3210.167.134.207 – 10.167.134.20710.167.134.207
8110.167.134.208/3210.167.134.208 – 10.167.134.20810.167.134.208
8210.167.134.209/3210.167.134.209 – 10.167.134.20910.167.134.209
8310.167.134.210/3210.167.134.210 – 10.167.134.21010.167.134.210
8410.167.134.211/3210.167.134.211 – 10.167.134.21110.167.134.211
8510.167.134.212/3210.167.134.212 – 10.167.134.21210.167.134.212
8610.167.134.213/3210.167.134.213 – 10.167.134.21310.167.134.213
8710.167.134.214/3210.167.134.214 – 10.167.134.21410.167.134.214
8810.167.134.215/3210.167.134.215 – 10.167.134.21510.167.134.215
8910.167.134.216/3210.167.134.216 – 10.167.134.21610.167.134.216
9010.167.134.217/3210.167.134.217 – 10.167.134.21710.167.134.217
9110.167.134.218/3210.167.134.218 – 10.167.134.21810.167.134.218
9210.167.134.219/3210.167.134.219 – 10.167.134.21910.167.134.219
9310.167.134.220/3210.167.134.220 – 10.167.134.22010.167.134.220
9410.167.134.221/3210.167.134.221 – 10.167.134.22110.167.134.221
9510.167.134.222/3210.167.134.222 – 10.167.134.22210.167.134.222
9610.167.134.223/3210.167.134.223 – 10.167.134.22310.167.134.223
9710.167.134.224/3210.167.134.224 – 10.167.134.22410.167.134.224
9810.167.134.225/3210.167.134.225 – 10.167.134.22510.167.134.225
9910.167.134.226/3210.167.134.226 – 10.167.134.22610.167.134.226
10010.167.134.227/3210.167.134.227 – 10.167.134.22710.167.134.227
10110.167.134.228/3210.167.134.228 – 10.167.134.22810.167.134.228
10210.167.134.229/3210.167.134.229 – 10.167.134.22910.167.134.229
10310.167.134.230/3210.167.134.230 – 10.167.134.23010.167.134.230
10410.167.134.231/3210.167.134.231 – 10.167.134.23110.167.134.231
10510.167.134.232/3210.167.134.232 – 10.167.134.23210.167.134.232
10610.167.134.233/3210.167.134.233 – 10.167.134.23310.167.134.233
10710.167.134.234/3210.167.134.234 – 10.167.134.23410.167.134.234
10810.167.134.235/3210.167.134.235 – 10.167.134.23510.167.134.235
10910.167.134.236/3210.167.134.236 – 10.167.134.23610.167.134.236
11010.167.134.237/3210.167.134.237 – 10.167.134.23710.167.134.237
11110.167.134.238/3210.167.134.238 – 10.167.134.23810.167.134.238
11210.167.134.239/3210.167.134.239 – 10.167.134.23910.167.134.239
11310.167.134.240/3210.167.134.240 – 10.167.134.24010.167.134.240
11410.167.134.241/3210.167.134.241 – 10.167.134.24110.167.134.241
11510.167.134.242/3210.167.134.242 – 10.167.134.24210.167.134.242
11610.167.134.243/3210.167.134.243 – 10.167.134.24310.167.134.243
11710.167.134.244/3210.167.134.244 – 10.167.134.24410.167.134.244
11810.167.134.245/3210.167.134.245 – 10.167.134.24510.167.134.245
11910.167.134.246/3210.167.134.246 – 10.167.134.24610.167.134.246
12010.167.134.247/3210.167.134.247 – 10.167.134.24710.167.134.247
12110.167.134.248/3210.167.134.248 – 10.167.134.24810.167.134.248
12210.167.134.249/3210.167.134.249 – 10.167.134.24910.167.134.249
12310.167.134.250/3210.167.134.250 – 10.167.134.25010.167.134.250
12410.167.134.251/3210.167.134.251 – 10.167.134.25110.167.134.251
12510.167.134.252/3210.167.134.252 – 10.167.134.25210.167.134.252
12610.167.134.253/3210.167.134.253 – 10.167.134.25310.167.134.253
12710.167.134.254/3210.167.134.254 – 10.167.134.25410.167.134.254
12810.167.134.255/3210.167.134.255 – 10.167.134.25510.167.134.255
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 →