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)10.167.147.128/25
network10.167.147.128/25
broadcast10.167.147.255
first host10.167.147.129
last host10.167.147.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.147.128/25
address00001010.10100111.10010011.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.10010011.10000000
broadcast00001010.10100111.10010011.11111111
green = network part, grey = host part
hex0x0aa79380
decimal178754432
reverse dns128.147.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:9380

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.147.128/3210.167.147.128 – 10.167.147.12810.167.147.128
210.167.147.129/3210.167.147.129 – 10.167.147.12910.167.147.129
310.167.147.130/3210.167.147.130 – 10.167.147.13010.167.147.130
410.167.147.131/3210.167.147.131 – 10.167.147.13110.167.147.131
510.167.147.132/3210.167.147.132 – 10.167.147.13210.167.147.132
610.167.147.133/3210.167.147.133 – 10.167.147.13310.167.147.133
710.167.147.134/3210.167.147.134 – 10.167.147.13410.167.147.134
810.167.147.135/3210.167.147.135 – 10.167.147.13510.167.147.135
910.167.147.136/3210.167.147.136 – 10.167.147.13610.167.147.136
1010.167.147.137/3210.167.147.137 – 10.167.147.13710.167.147.137
1110.167.147.138/3210.167.147.138 – 10.167.147.13810.167.147.138
1210.167.147.139/3210.167.147.139 – 10.167.147.13910.167.147.139
1310.167.147.140/3210.167.147.140 – 10.167.147.14010.167.147.140
1410.167.147.141/3210.167.147.141 – 10.167.147.14110.167.147.141
1510.167.147.142/3210.167.147.142 – 10.167.147.14210.167.147.142
1610.167.147.143/3210.167.147.143 – 10.167.147.14310.167.147.143
1710.167.147.144/3210.167.147.144 – 10.167.147.14410.167.147.144
1810.167.147.145/3210.167.147.145 – 10.167.147.14510.167.147.145
1910.167.147.146/3210.167.147.146 – 10.167.147.14610.167.147.146
2010.167.147.147/3210.167.147.147 – 10.167.147.14710.167.147.147
2110.167.147.148/3210.167.147.148 – 10.167.147.14810.167.147.148
2210.167.147.149/3210.167.147.149 – 10.167.147.14910.167.147.149
2310.167.147.150/3210.167.147.150 – 10.167.147.15010.167.147.150
2410.167.147.151/3210.167.147.151 – 10.167.147.15110.167.147.151
2510.167.147.152/3210.167.147.152 – 10.167.147.15210.167.147.152
2610.167.147.153/3210.167.147.153 – 10.167.147.15310.167.147.153
2710.167.147.154/3210.167.147.154 – 10.167.147.15410.167.147.154
2810.167.147.155/3210.167.147.155 – 10.167.147.15510.167.147.155
2910.167.147.156/3210.167.147.156 – 10.167.147.15610.167.147.156
3010.167.147.157/3210.167.147.157 – 10.167.147.15710.167.147.157
3110.167.147.158/3210.167.147.158 – 10.167.147.15810.167.147.158
3210.167.147.159/3210.167.147.159 – 10.167.147.15910.167.147.159
3310.167.147.160/3210.167.147.160 – 10.167.147.16010.167.147.160
3410.167.147.161/3210.167.147.161 – 10.167.147.16110.167.147.161
3510.167.147.162/3210.167.147.162 – 10.167.147.16210.167.147.162
3610.167.147.163/3210.167.147.163 – 10.167.147.16310.167.147.163
3710.167.147.164/3210.167.147.164 – 10.167.147.16410.167.147.164
3810.167.147.165/3210.167.147.165 – 10.167.147.16510.167.147.165
3910.167.147.166/3210.167.147.166 – 10.167.147.16610.167.147.166
4010.167.147.167/3210.167.147.167 – 10.167.147.16710.167.147.167
4110.167.147.168/3210.167.147.168 – 10.167.147.16810.167.147.168
4210.167.147.169/3210.167.147.169 – 10.167.147.16910.167.147.169
4310.167.147.170/3210.167.147.170 – 10.167.147.17010.167.147.170
4410.167.147.171/3210.167.147.171 – 10.167.147.17110.167.147.171
4510.167.147.172/3210.167.147.172 – 10.167.147.17210.167.147.172
4610.167.147.173/3210.167.147.173 – 10.167.147.17310.167.147.173
4710.167.147.174/3210.167.147.174 – 10.167.147.17410.167.147.174
4810.167.147.175/3210.167.147.175 – 10.167.147.17510.167.147.175
4910.167.147.176/3210.167.147.176 – 10.167.147.17610.167.147.176
5010.167.147.177/3210.167.147.177 – 10.167.147.17710.167.147.177
5110.167.147.178/3210.167.147.178 – 10.167.147.17810.167.147.178
5210.167.147.179/3210.167.147.179 – 10.167.147.17910.167.147.179
5310.167.147.180/3210.167.147.180 – 10.167.147.18010.167.147.180
5410.167.147.181/3210.167.147.181 – 10.167.147.18110.167.147.181
5510.167.147.182/3210.167.147.182 – 10.167.147.18210.167.147.182
5610.167.147.183/3210.167.147.183 – 10.167.147.18310.167.147.183
5710.167.147.184/3210.167.147.184 – 10.167.147.18410.167.147.184
5810.167.147.185/3210.167.147.185 – 10.167.147.18510.167.147.185
5910.167.147.186/3210.167.147.186 – 10.167.147.18610.167.147.186
6010.167.147.187/3210.167.147.187 – 10.167.147.18710.167.147.187
6110.167.147.188/3210.167.147.188 – 10.167.147.18810.167.147.188
6210.167.147.189/3210.167.147.189 – 10.167.147.18910.167.147.189
6310.167.147.190/3210.167.147.190 – 10.167.147.19010.167.147.190
6410.167.147.191/3210.167.147.191 – 10.167.147.19110.167.147.191
6510.167.147.192/3210.167.147.192 – 10.167.147.19210.167.147.192
6610.167.147.193/3210.167.147.193 – 10.167.147.19310.167.147.193
6710.167.147.194/3210.167.147.194 – 10.167.147.19410.167.147.194
6810.167.147.195/3210.167.147.195 – 10.167.147.19510.167.147.195
6910.167.147.196/3210.167.147.196 – 10.167.147.19610.167.147.196
7010.167.147.197/3210.167.147.197 – 10.167.147.19710.167.147.197
7110.167.147.198/3210.167.147.198 – 10.167.147.19810.167.147.198
7210.167.147.199/3210.167.147.199 – 10.167.147.19910.167.147.199
7310.167.147.200/3210.167.147.200 – 10.167.147.20010.167.147.200
7410.167.147.201/3210.167.147.201 – 10.167.147.20110.167.147.201
7510.167.147.202/3210.167.147.202 – 10.167.147.20210.167.147.202
7610.167.147.203/3210.167.147.203 – 10.167.147.20310.167.147.203
7710.167.147.204/3210.167.147.204 – 10.167.147.20410.167.147.204
7810.167.147.205/3210.167.147.205 – 10.167.147.20510.167.147.205
7910.167.147.206/3210.167.147.206 – 10.167.147.20610.167.147.206
8010.167.147.207/3210.167.147.207 – 10.167.147.20710.167.147.207
8110.167.147.208/3210.167.147.208 – 10.167.147.20810.167.147.208
8210.167.147.209/3210.167.147.209 – 10.167.147.20910.167.147.209
8310.167.147.210/3210.167.147.210 – 10.167.147.21010.167.147.210
8410.167.147.211/3210.167.147.211 – 10.167.147.21110.167.147.211
8510.167.147.212/3210.167.147.212 – 10.167.147.21210.167.147.212
8610.167.147.213/3210.167.147.213 – 10.167.147.21310.167.147.213
8710.167.147.214/3210.167.147.214 – 10.167.147.21410.167.147.214
8810.167.147.215/3210.167.147.215 – 10.167.147.21510.167.147.215
8910.167.147.216/3210.167.147.216 – 10.167.147.21610.167.147.216
9010.167.147.217/3210.167.147.217 – 10.167.147.21710.167.147.217
9110.167.147.218/3210.167.147.218 – 10.167.147.21810.167.147.218
9210.167.147.219/3210.167.147.219 – 10.167.147.21910.167.147.219
9310.167.147.220/3210.167.147.220 – 10.167.147.22010.167.147.220
9410.167.147.221/3210.167.147.221 – 10.167.147.22110.167.147.221
9510.167.147.222/3210.167.147.222 – 10.167.147.22210.167.147.222
9610.167.147.223/3210.167.147.223 – 10.167.147.22310.167.147.223
9710.167.147.224/3210.167.147.224 – 10.167.147.22410.167.147.224
9810.167.147.225/3210.167.147.225 – 10.167.147.22510.167.147.225
9910.167.147.226/3210.167.147.226 – 10.167.147.22610.167.147.226
10010.167.147.227/3210.167.147.227 – 10.167.147.22710.167.147.227
10110.167.147.228/3210.167.147.228 – 10.167.147.22810.167.147.228
10210.167.147.229/3210.167.147.229 – 10.167.147.22910.167.147.229
10310.167.147.230/3210.167.147.230 – 10.167.147.23010.167.147.230
10410.167.147.231/3210.167.147.231 – 10.167.147.23110.167.147.231
10510.167.147.232/3210.167.147.232 – 10.167.147.23210.167.147.232
10610.167.147.233/3210.167.147.233 – 10.167.147.23310.167.147.233
10710.167.147.234/3210.167.147.234 – 10.167.147.23410.167.147.234
10810.167.147.235/3210.167.147.235 – 10.167.147.23510.167.147.235
10910.167.147.236/3210.167.147.236 – 10.167.147.23610.167.147.236
11010.167.147.237/3210.167.147.237 – 10.167.147.23710.167.147.237
11110.167.147.238/3210.167.147.238 – 10.167.147.23810.167.147.238
11210.167.147.239/3210.167.147.239 – 10.167.147.23910.167.147.239
11310.167.147.240/3210.167.147.240 – 10.167.147.24010.167.147.240
11410.167.147.241/3210.167.147.241 – 10.167.147.24110.167.147.241
11510.167.147.242/3210.167.147.242 – 10.167.147.24210.167.147.242
11610.167.147.243/3210.167.147.243 – 10.167.147.24310.167.147.243
11710.167.147.244/3210.167.147.244 – 10.167.147.24410.167.147.244
11810.167.147.245/3210.167.147.245 – 10.167.147.24510.167.147.245
11910.167.147.246/3210.167.147.246 – 10.167.147.24610.167.147.246
12010.167.147.247/3210.167.147.247 – 10.167.147.24710.167.147.247
12110.167.147.248/3210.167.147.248 – 10.167.147.24810.167.147.248
12210.167.147.249/3210.167.147.249 – 10.167.147.24910.167.147.249
12310.167.147.250/3210.167.147.250 – 10.167.147.25010.167.147.250
12410.167.147.251/3210.167.147.251 – 10.167.147.25110.167.147.251
12510.167.147.252/3210.167.147.252 – 10.167.147.25210.167.147.252
12610.167.147.253/3210.167.147.253 – 10.167.147.25310.167.147.253
12710.167.147.254/3210.167.147.254 – 10.167.147.25410.167.147.254
12810.167.147.255/3210.167.147.255 – 10.167.147.25510.167.147.255
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 →