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)10.167.237.128/25
network10.167.237.128/25
broadcast10.167.237.255
first host10.167.237.129
last host10.167.237.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.237.128/25
address00001010.10100111.11101101.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.11101101.10000000
broadcast00001010.10100111.11101101.11111111
green = network part, grey = host part
hex0x0aa7ed80
decimal178777472
reverse dns128.237.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:ed80

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.237.128/3210.167.237.128 – 10.167.237.12810.167.237.128
210.167.237.129/3210.167.237.129 – 10.167.237.12910.167.237.129
310.167.237.130/3210.167.237.130 – 10.167.237.13010.167.237.130
410.167.237.131/3210.167.237.131 – 10.167.237.13110.167.237.131
510.167.237.132/3210.167.237.132 – 10.167.237.13210.167.237.132
610.167.237.133/3210.167.237.133 – 10.167.237.13310.167.237.133
710.167.237.134/3210.167.237.134 – 10.167.237.13410.167.237.134
810.167.237.135/3210.167.237.135 – 10.167.237.13510.167.237.135
910.167.237.136/3210.167.237.136 – 10.167.237.13610.167.237.136
1010.167.237.137/3210.167.237.137 – 10.167.237.13710.167.237.137
1110.167.237.138/3210.167.237.138 – 10.167.237.13810.167.237.138
1210.167.237.139/3210.167.237.139 – 10.167.237.13910.167.237.139
1310.167.237.140/3210.167.237.140 – 10.167.237.14010.167.237.140
1410.167.237.141/3210.167.237.141 – 10.167.237.14110.167.237.141
1510.167.237.142/3210.167.237.142 – 10.167.237.14210.167.237.142
1610.167.237.143/3210.167.237.143 – 10.167.237.14310.167.237.143
1710.167.237.144/3210.167.237.144 – 10.167.237.14410.167.237.144
1810.167.237.145/3210.167.237.145 – 10.167.237.14510.167.237.145
1910.167.237.146/3210.167.237.146 – 10.167.237.14610.167.237.146
2010.167.237.147/3210.167.237.147 – 10.167.237.14710.167.237.147
2110.167.237.148/3210.167.237.148 – 10.167.237.14810.167.237.148
2210.167.237.149/3210.167.237.149 – 10.167.237.14910.167.237.149
2310.167.237.150/3210.167.237.150 – 10.167.237.15010.167.237.150
2410.167.237.151/3210.167.237.151 – 10.167.237.15110.167.237.151
2510.167.237.152/3210.167.237.152 – 10.167.237.15210.167.237.152
2610.167.237.153/3210.167.237.153 – 10.167.237.15310.167.237.153
2710.167.237.154/3210.167.237.154 – 10.167.237.15410.167.237.154
2810.167.237.155/3210.167.237.155 – 10.167.237.15510.167.237.155
2910.167.237.156/3210.167.237.156 – 10.167.237.15610.167.237.156
3010.167.237.157/3210.167.237.157 – 10.167.237.15710.167.237.157
3110.167.237.158/3210.167.237.158 – 10.167.237.15810.167.237.158
3210.167.237.159/3210.167.237.159 – 10.167.237.15910.167.237.159
3310.167.237.160/3210.167.237.160 – 10.167.237.16010.167.237.160
3410.167.237.161/3210.167.237.161 – 10.167.237.16110.167.237.161
3510.167.237.162/3210.167.237.162 – 10.167.237.16210.167.237.162
3610.167.237.163/3210.167.237.163 – 10.167.237.16310.167.237.163
3710.167.237.164/3210.167.237.164 – 10.167.237.16410.167.237.164
3810.167.237.165/3210.167.237.165 – 10.167.237.16510.167.237.165
3910.167.237.166/3210.167.237.166 – 10.167.237.16610.167.237.166
4010.167.237.167/3210.167.237.167 – 10.167.237.16710.167.237.167
4110.167.237.168/3210.167.237.168 – 10.167.237.16810.167.237.168
4210.167.237.169/3210.167.237.169 – 10.167.237.16910.167.237.169
4310.167.237.170/3210.167.237.170 – 10.167.237.17010.167.237.170
4410.167.237.171/3210.167.237.171 – 10.167.237.17110.167.237.171
4510.167.237.172/3210.167.237.172 – 10.167.237.17210.167.237.172
4610.167.237.173/3210.167.237.173 – 10.167.237.17310.167.237.173
4710.167.237.174/3210.167.237.174 – 10.167.237.17410.167.237.174
4810.167.237.175/3210.167.237.175 – 10.167.237.17510.167.237.175
4910.167.237.176/3210.167.237.176 – 10.167.237.17610.167.237.176
5010.167.237.177/3210.167.237.177 – 10.167.237.17710.167.237.177
5110.167.237.178/3210.167.237.178 – 10.167.237.17810.167.237.178
5210.167.237.179/3210.167.237.179 – 10.167.237.17910.167.237.179
5310.167.237.180/3210.167.237.180 – 10.167.237.18010.167.237.180
5410.167.237.181/3210.167.237.181 – 10.167.237.18110.167.237.181
5510.167.237.182/3210.167.237.182 – 10.167.237.18210.167.237.182
5610.167.237.183/3210.167.237.183 – 10.167.237.18310.167.237.183
5710.167.237.184/3210.167.237.184 – 10.167.237.18410.167.237.184
5810.167.237.185/3210.167.237.185 – 10.167.237.18510.167.237.185
5910.167.237.186/3210.167.237.186 – 10.167.237.18610.167.237.186
6010.167.237.187/3210.167.237.187 – 10.167.237.18710.167.237.187
6110.167.237.188/3210.167.237.188 – 10.167.237.18810.167.237.188
6210.167.237.189/3210.167.237.189 – 10.167.237.18910.167.237.189
6310.167.237.190/3210.167.237.190 – 10.167.237.19010.167.237.190
6410.167.237.191/3210.167.237.191 – 10.167.237.19110.167.237.191
6510.167.237.192/3210.167.237.192 – 10.167.237.19210.167.237.192
6610.167.237.193/3210.167.237.193 – 10.167.237.19310.167.237.193
6710.167.237.194/3210.167.237.194 – 10.167.237.19410.167.237.194
6810.167.237.195/3210.167.237.195 – 10.167.237.19510.167.237.195
6910.167.237.196/3210.167.237.196 – 10.167.237.19610.167.237.196
7010.167.237.197/3210.167.237.197 – 10.167.237.19710.167.237.197
7110.167.237.198/3210.167.237.198 – 10.167.237.19810.167.237.198
7210.167.237.199/3210.167.237.199 – 10.167.237.19910.167.237.199
7310.167.237.200/3210.167.237.200 – 10.167.237.20010.167.237.200
7410.167.237.201/3210.167.237.201 – 10.167.237.20110.167.237.201
7510.167.237.202/3210.167.237.202 – 10.167.237.20210.167.237.202
7610.167.237.203/3210.167.237.203 – 10.167.237.20310.167.237.203
7710.167.237.204/3210.167.237.204 – 10.167.237.20410.167.237.204
7810.167.237.205/3210.167.237.205 – 10.167.237.20510.167.237.205
7910.167.237.206/3210.167.237.206 – 10.167.237.20610.167.237.206
8010.167.237.207/3210.167.237.207 – 10.167.237.20710.167.237.207
8110.167.237.208/3210.167.237.208 – 10.167.237.20810.167.237.208
8210.167.237.209/3210.167.237.209 – 10.167.237.20910.167.237.209
8310.167.237.210/3210.167.237.210 – 10.167.237.21010.167.237.210
8410.167.237.211/3210.167.237.211 – 10.167.237.21110.167.237.211
8510.167.237.212/3210.167.237.212 – 10.167.237.21210.167.237.212
8610.167.237.213/3210.167.237.213 – 10.167.237.21310.167.237.213
8710.167.237.214/3210.167.237.214 – 10.167.237.21410.167.237.214
8810.167.237.215/3210.167.237.215 – 10.167.237.21510.167.237.215
8910.167.237.216/3210.167.237.216 – 10.167.237.21610.167.237.216
9010.167.237.217/3210.167.237.217 – 10.167.237.21710.167.237.217
9110.167.237.218/3210.167.237.218 – 10.167.237.21810.167.237.218
9210.167.237.219/3210.167.237.219 – 10.167.237.21910.167.237.219
9310.167.237.220/3210.167.237.220 – 10.167.237.22010.167.237.220
9410.167.237.221/3210.167.237.221 – 10.167.237.22110.167.237.221
9510.167.237.222/3210.167.237.222 – 10.167.237.22210.167.237.222
9610.167.237.223/3210.167.237.223 – 10.167.237.22310.167.237.223
9710.167.237.224/3210.167.237.224 – 10.167.237.22410.167.237.224
9810.167.237.225/3210.167.237.225 – 10.167.237.22510.167.237.225
9910.167.237.226/3210.167.237.226 – 10.167.237.22610.167.237.226
10010.167.237.227/3210.167.237.227 – 10.167.237.22710.167.237.227
10110.167.237.228/3210.167.237.228 – 10.167.237.22810.167.237.228
10210.167.237.229/3210.167.237.229 – 10.167.237.22910.167.237.229
10310.167.237.230/3210.167.237.230 – 10.167.237.23010.167.237.230
10410.167.237.231/3210.167.237.231 – 10.167.237.23110.167.237.231
10510.167.237.232/3210.167.237.232 – 10.167.237.23210.167.237.232
10610.167.237.233/3210.167.237.233 – 10.167.237.23310.167.237.233
10710.167.237.234/3210.167.237.234 – 10.167.237.23410.167.237.234
10810.167.237.235/3210.167.237.235 – 10.167.237.23510.167.237.235
10910.167.237.236/3210.167.237.236 – 10.167.237.23610.167.237.236
11010.167.237.237/3210.167.237.237 – 10.167.237.23710.167.237.237
11110.167.237.238/3210.167.237.238 – 10.167.237.23810.167.237.238
11210.167.237.239/3210.167.237.239 – 10.167.237.23910.167.237.239
11310.167.237.240/3210.167.237.240 – 10.167.237.24010.167.237.240
11410.167.237.241/3210.167.237.241 – 10.167.237.24110.167.237.241
11510.167.237.242/3210.167.237.242 – 10.167.237.24210.167.237.242
11610.167.237.243/3210.167.237.243 – 10.167.237.24310.167.237.243
11710.167.237.244/3210.167.237.244 – 10.167.237.24410.167.237.244
11810.167.237.245/3210.167.237.245 – 10.167.237.24510.167.237.245
11910.167.237.246/3210.167.237.246 – 10.167.237.24610.167.237.246
12010.167.237.247/3210.167.237.247 – 10.167.237.24710.167.237.247
12110.167.237.248/3210.167.237.248 – 10.167.237.24810.167.237.248
12210.167.237.249/3210.167.237.249 – 10.167.237.24910.167.237.249
12310.167.237.250/3210.167.237.250 – 10.167.237.25010.167.237.250
12410.167.237.251/3210.167.237.251 – 10.167.237.25110.167.237.251
12510.167.237.252/3210.167.237.252 – 10.167.237.25210.167.237.252
12610.167.237.253/3210.167.237.253 – 10.167.237.25310.167.237.253
12710.167.237.254/3210.167.237.254 – 10.167.237.25410.167.237.254
12810.167.237.255/3210.167.237.255 – 10.167.237.25510.167.237.255
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 →