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)10.167.196.128/25
network10.167.196.128/25
broadcast10.167.196.255
first host10.167.196.129
last host10.167.196.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.196.128/25
address00001010.10100111.11000100.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.11000100.10000000
broadcast00001010.10100111.11000100.11111111
green = network part, grey = host part
hex0x0aa7c480
decimal178766976
reverse dns128.196.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:c480

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.196.128/3210.167.196.128 – 10.167.196.12810.167.196.128
210.167.196.129/3210.167.196.129 – 10.167.196.12910.167.196.129
310.167.196.130/3210.167.196.130 – 10.167.196.13010.167.196.130
410.167.196.131/3210.167.196.131 – 10.167.196.13110.167.196.131
510.167.196.132/3210.167.196.132 – 10.167.196.13210.167.196.132
610.167.196.133/3210.167.196.133 – 10.167.196.13310.167.196.133
710.167.196.134/3210.167.196.134 – 10.167.196.13410.167.196.134
810.167.196.135/3210.167.196.135 – 10.167.196.13510.167.196.135
910.167.196.136/3210.167.196.136 – 10.167.196.13610.167.196.136
1010.167.196.137/3210.167.196.137 – 10.167.196.13710.167.196.137
1110.167.196.138/3210.167.196.138 – 10.167.196.13810.167.196.138
1210.167.196.139/3210.167.196.139 – 10.167.196.13910.167.196.139
1310.167.196.140/3210.167.196.140 – 10.167.196.14010.167.196.140
1410.167.196.141/3210.167.196.141 – 10.167.196.14110.167.196.141
1510.167.196.142/3210.167.196.142 – 10.167.196.14210.167.196.142
1610.167.196.143/3210.167.196.143 – 10.167.196.14310.167.196.143
1710.167.196.144/3210.167.196.144 – 10.167.196.14410.167.196.144
1810.167.196.145/3210.167.196.145 – 10.167.196.14510.167.196.145
1910.167.196.146/3210.167.196.146 – 10.167.196.14610.167.196.146
2010.167.196.147/3210.167.196.147 – 10.167.196.14710.167.196.147
2110.167.196.148/3210.167.196.148 – 10.167.196.14810.167.196.148
2210.167.196.149/3210.167.196.149 – 10.167.196.14910.167.196.149
2310.167.196.150/3210.167.196.150 – 10.167.196.15010.167.196.150
2410.167.196.151/3210.167.196.151 – 10.167.196.15110.167.196.151
2510.167.196.152/3210.167.196.152 – 10.167.196.15210.167.196.152
2610.167.196.153/3210.167.196.153 – 10.167.196.15310.167.196.153
2710.167.196.154/3210.167.196.154 – 10.167.196.15410.167.196.154
2810.167.196.155/3210.167.196.155 – 10.167.196.15510.167.196.155
2910.167.196.156/3210.167.196.156 – 10.167.196.15610.167.196.156
3010.167.196.157/3210.167.196.157 – 10.167.196.15710.167.196.157
3110.167.196.158/3210.167.196.158 – 10.167.196.15810.167.196.158
3210.167.196.159/3210.167.196.159 – 10.167.196.15910.167.196.159
3310.167.196.160/3210.167.196.160 – 10.167.196.16010.167.196.160
3410.167.196.161/3210.167.196.161 – 10.167.196.16110.167.196.161
3510.167.196.162/3210.167.196.162 – 10.167.196.16210.167.196.162
3610.167.196.163/3210.167.196.163 – 10.167.196.16310.167.196.163
3710.167.196.164/3210.167.196.164 – 10.167.196.16410.167.196.164
3810.167.196.165/3210.167.196.165 – 10.167.196.16510.167.196.165
3910.167.196.166/3210.167.196.166 – 10.167.196.16610.167.196.166
4010.167.196.167/3210.167.196.167 – 10.167.196.16710.167.196.167
4110.167.196.168/3210.167.196.168 – 10.167.196.16810.167.196.168
4210.167.196.169/3210.167.196.169 – 10.167.196.16910.167.196.169
4310.167.196.170/3210.167.196.170 – 10.167.196.17010.167.196.170
4410.167.196.171/3210.167.196.171 – 10.167.196.17110.167.196.171
4510.167.196.172/3210.167.196.172 – 10.167.196.17210.167.196.172
4610.167.196.173/3210.167.196.173 – 10.167.196.17310.167.196.173
4710.167.196.174/3210.167.196.174 – 10.167.196.17410.167.196.174
4810.167.196.175/3210.167.196.175 – 10.167.196.17510.167.196.175
4910.167.196.176/3210.167.196.176 – 10.167.196.17610.167.196.176
5010.167.196.177/3210.167.196.177 – 10.167.196.17710.167.196.177
5110.167.196.178/3210.167.196.178 – 10.167.196.17810.167.196.178
5210.167.196.179/3210.167.196.179 – 10.167.196.17910.167.196.179
5310.167.196.180/3210.167.196.180 – 10.167.196.18010.167.196.180
5410.167.196.181/3210.167.196.181 – 10.167.196.18110.167.196.181
5510.167.196.182/3210.167.196.182 – 10.167.196.18210.167.196.182
5610.167.196.183/3210.167.196.183 – 10.167.196.18310.167.196.183
5710.167.196.184/3210.167.196.184 – 10.167.196.18410.167.196.184
5810.167.196.185/3210.167.196.185 – 10.167.196.18510.167.196.185
5910.167.196.186/3210.167.196.186 – 10.167.196.18610.167.196.186
6010.167.196.187/3210.167.196.187 – 10.167.196.18710.167.196.187
6110.167.196.188/3210.167.196.188 – 10.167.196.18810.167.196.188
6210.167.196.189/3210.167.196.189 – 10.167.196.18910.167.196.189
6310.167.196.190/3210.167.196.190 – 10.167.196.19010.167.196.190
6410.167.196.191/3210.167.196.191 – 10.167.196.19110.167.196.191
6510.167.196.192/3210.167.196.192 – 10.167.196.19210.167.196.192
6610.167.196.193/3210.167.196.193 – 10.167.196.19310.167.196.193
6710.167.196.194/3210.167.196.194 – 10.167.196.19410.167.196.194
6810.167.196.195/3210.167.196.195 – 10.167.196.19510.167.196.195
6910.167.196.196/3210.167.196.196 – 10.167.196.19610.167.196.196
7010.167.196.197/3210.167.196.197 – 10.167.196.19710.167.196.197
7110.167.196.198/3210.167.196.198 – 10.167.196.19810.167.196.198
7210.167.196.199/3210.167.196.199 – 10.167.196.19910.167.196.199
7310.167.196.200/3210.167.196.200 – 10.167.196.20010.167.196.200
7410.167.196.201/3210.167.196.201 – 10.167.196.20110.167.196.201
7510.167.196.202/3210.167.196.202 – 10.167.196.20210.167.196.202
7610.167.196.203/3210.167.196.203 – 10.167.196.20310.167.196.203
7710.167.196.204/3210.167.196.204 – 10.167.196.20410.167.196.204
7810.167.196.205/3210.167.196.205 – 10.167.196.20510.167.196.205
7910.167.196.206/3210.167.196.206 – 10.167.196.20610.167.196.206
8010.167.196.207/3210.167.196.207 – 10.167.196.20710.167.196.207
8110.167.196.208/3210.167.196.208 – 10.167.196.20810.167.196.208
8210.167.196.209/3210.167.196.209 – 10.167.196.20910.167.196.209
8310.167.196.210/3210.167.196.210 – 10.167.196.21010.167.196.210
8410.167.196.211/3210.167.196.211 – 10.167.196.21110.167.196.211
8510.167.196.212/3210.167.196.212 – 10.167.196.21210.167.196.212
8610.167.196.213/3210.167.196.213 – 10.167.196.21310.167.196.213
8710.167.196.214/3210.167.196.214 – 10.167.196.21410.167.196.214
8810.167.196.215/3210.167.196.215 – 10.167.196.21510.167.196.215
8910.167.196.216/3210.167.196.216 – 10.167.196.21610.167.196.216
9010.167.196.217/3210.167.196.217 – 10.167.196.21710.167.196.217
9110.167.196.218/3210.167.196.218 – 10.167.196.21810.167.196.218
9210.167.196.219/3210.167.196.219 – 10.167.196.21910.167.196.219
9310.167.196.220/3210.167.196.220 – 10.167.196.22010.167.196.220
9410.167.196.221/3210.167.196.221 – 10.167.196.22110.167.196.221
9510.167.196.222/3210.167.196.222 – 10.167.196.22210.167.196.222
9610.167.196.223/3210.167.196.223 – 10.167.196.22310.167.196.223
9710.167.196.224/3210.167.196.224 – 10.167.196.22410.167.196.224
9810.167.196.225/3210.167.196.225 – 10.167.196.22510.167.196.225
9910.167.196.226/3210.167.196.226 – 10.167.196.22610.167.196.226
10010.167.196.227/3210.167.196.227 – 10.167.196.22710.167.196.227
10110.167.196.228/3210.167.196.228 – 10.167.196.22810.167.196.228
10210.167.196.229/3210.167.196.229 – 10.167.196.22910.167.196.229
10310.167.196.230/3210.167.196.230 – 10.167.196.23010.167.196.230
10410.167.196.231/3210.167.196.231 – 10.167.196.23110.167.196.231
10510.167.196.232/3210.167.196.232 – 10.167.196.23210.167.196.232
10610.167.196.233/3210.167.196.233 – 10.167.196.23310.167.196.233
10710.167.196.234/3210.167.196.234 – 10.167.196.23410.167.196.234
10810.167.196.235/3210.167.196.235 – 10.167.196.23510.167.196.235
10910.167.196.236/3210.167.196.236 – 10.167.196.23610.167.196.236
11010.167.196.237/3210.167.196.237 – 10.167.196.23710.167.196.237
11110.167.196.238/3210.167.196.238 – 10.167.196.23810.167.196.238
11210.167.196.239/3210.167.196.239 – 10.167.196.23910.167.196.239
11310.167.196.240/3210.167.196.240 – 10.167.196.24010.167.196.240
11410.167.196.241/3210.167.196.241 – 10.167.196.24110.167.196.241
11510.167.196.242/3210.167.196.242 – 10.167.196.24210.167.196.242
11610.167.196.243/3210.167.196.243 – 10.167.196.24310.167.196.243
11710.167.196.244/3210.167.196.244 – 10.167.196.24410.167.196.244
11810.167.196.245/3210.167.196.245 – 10.167.196.24510.167.196.245
11910.167.196.246/3210.167.196.246 – 10.167.196.24610.167.196.246
12010.167.196.247/3210.167.196.247 – 10.167.196.24710.167.196.247
12110.167.196.248/3210.167.196.248 – 10.167.196.24810.167.196.248
12210.167.196.249/3210.167.196.249 – 10.167.196.24910.167.196.249
12310.167.196.250/3210.167.196.250 – 10.167.196.25010.167.196.250
12410.167.196.251/3210.167.196.251 – 10.167.196.25110.167.196.251
12510.167.196.252/3210.167.196.252 – 10.167.196.25210.167.196.252
12610.167.196.253/3210.167.196.253 – 10.167.196.25310.167.196.253
12710.167.196.254/3210.167.196.254 – 10.167.196.25410.167.196.254
12810.167.196.255/3210.167.196.255 – 10.167.196.25510.167.196.255
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 →