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)10.167.252.128/25
network10.167.252.128/25
broadcast10.167.252.255
first host10.167.252.129
last host10.167.252.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.252.128/25
address00001010.10100111.11111100.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.11111100.10000000
broadcast00001010.10100111.11111100.11111111
green = network part, grey = host part
hex0x0aa7fc80
decimal178781312
reverse dns128.252.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:fc80

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.252.128/3210.167.252.128 – 10.167.252.12810.167.252.128
210.167.252.129/3210.167.252.129 – 10.167.252.12910.167.252.129
310.167.252.130/3210.167.252.130 – 10.167.252.13010.167.252.130
410.167.252.131/3210.167.252.131 – 10.167.252.13110.167.252.131
510.167.252.132/3210.167.252.132 – 10.167.252.13210.167.252.132
610.167.252.133/3210.167.252.133 – 10.167.252.13310.167.252.133
710.167.252.134/3210.167.252.134 – 10.167.252.13410.167.252.134
810.167.252.135/3210.167.252.135 – 10.167.252.13510.167.252.135
910.167.252.136/3210.167.252.136 – 10.167.252.13610.167.252.136
1010.167.252.137/3210.167.252.137 – 10.167.252.13710.167.252.137
1110.167.252.138/3210.167.252.138 – 10.167.252.13810.167.252.138
1210.167.252.139/3210.167.252.139 – 10.167.252.13910.167.252.139
1310.167.252.140/3210.167.252.140 – 10.167.252.14010.167.252.140
1410.167.252.141/3210.167.252.141 – 10.167.252.14110.167.252.141
1510.167.252.142/3210.167.252.142 – 10.167.252.14210.167.252.142
1610.167.252.143/3210.167.252.143 – 10.167.252.14310.167.252.143
1710.167.252.144/3210.167.252.144 – 10.167.252.14410.167.252.144
1810.167.252.145/3210.167.252.145 – 10.167.252.14510.167.252.145
1910.167.252.146/3210.167.252.146 – 10.167.252.14610.167.252.146
2010.167.252.147/3210.167.252.147 – 10.167.252.14710.167.252.147
2110.167.252.148/3210.167.252.148 – 10.167.252.14810.167.252.148
2210.167.252.149/3210.167.252.149 – 10.167.252.14910.167.252.149
2310.167.252.150/3210.167.252.150 – 10.167.252.15010.167.252.150
2410.167.252.151/3210.167.252.151 – 10.167.252.15110.167.252.151
2510.167.252.152/3210.167.252.152 – 10.167.252.15210.167.252.152
2610.167.252.153/3210.167.252.153 – 10.167.252.15310.167.252.153
2710.167.252.154/3210.167.252.154 – 10.167.252.15410.167.252.154
2810.167.252.155/3210.167.252.155 – 10.167.252.15510.167.252.155
2910.167.252.156/3210.167.252.156 – 10.167.252.15610.167.252.156
3010.167.252.157/3210.167.252.157 – 10.167.252.15710.167.252.157
3110.167.252.158/3210.167.252.158 – 10.167.252.15810.167.252.158
3210.167.252.159/3210.167.252.159 – 10.167.252.15910.167.252.159
3310.167.252.160/3210.167.252.160 – 10.167.252.16010.167.252.160
3410.167.252.161/3210.167.252.161 – 10.167.252.16110.167.252.161
3510.167.252.162/3210.167.252.162 – 10.167.252.16210.167.252.162
3610.167.252.163/3210.167.252.163 – 10.167.252.16310.167.252.163
3710.167.252.164/3210.167.252.164 – 10.167.252.16410.167.252.164
3810.167.252.165/3210.167.252.165 – 10.167.252.16510.167.252.165
3910.167.252.166/3210.167.252.166 – 10.167.252.16610.167.252.166
4010.167.252.167/3210.167.252.167 – 10.167.252.16710.167.252.167
4110.167.252.168/3210.167.252.168 – 10.167.252.16810.167.252.168
4210.167.252.169/3210.167.252.169 – 10.167.252.16910.167.252.169
4310.167.252.170/3210.167.252.170 – 10.167.252.17010.167.252.170
4410.167.252.171/3210.167.252.171 – 10.167.252.17110.167.252.171
4510.167.252.172/3210.167.252.172 – 10.167.252.17210.167.252.172
4610.167.252.173/3210.167.252.173 – 10.167.252.17310.167.252.173
4710.167.252.174/3210.167.252.174 – 10.167.252.17410.167.252.174
4810.167.252.175/3210.167.252.175 – 10.167.252.17510.167.252.175
4910.167.252.176/3210.167.252.176 – 10.167.252.17610.167.252.176
5010.167.252.177/3210.167.252.177 – 10.167.252.17710.167.252.177
5110.167.252.178/3210.167.252.178 – 10.167.252.17810.167.252.178
5210.167.252.179/3210.167.252.179 – 10.167.252.17910.167.252.179
5310.167.252.180/3210.167.252.180 – 10.167.252.18010.167.252.180
5410.167.252.181/3210.167.252.181 – 10.167.252.18110.167.252.181
5510.167.252.182/3210.167.252.182 – 10.167.252.18210.167.252.182
5610.167.252.183/3210.167.252.183 – 10.167.252.18310.167.252.183
5710.167.252.184/3210.167.252.184 – 10.167.252.18410.167.252.184
5810.167.252.185/3210.167.252.185 – 10.167.252.18510.167.252.185
5910.167.252.186/3210.167.252.186 – 10.167.252.18610.167.252.186
6010.167.252.187/3210.167.252.187 – 10.167.252.18710.167.252.187
6110.167.252.188/3210.167.252.188 – 10.167.252.18810.167.252.188
6210.167.252.189/3210.167.252.189 – 10.167.252.18910.167.252.189
6310.167.252.190/3210.167.252.190 – 10.167.252.19010.167.252.190
6410.167.252.191/3210.167.252.191 – 10.167.252.19110.167.252.191
6510.167.252.192/3210.167.252.192 – 10.167.252.19210.167.252.192
6610.167.252.193/3210.167.252.193 – 10.167.252.19310.167.252.193
6710.167.252.194/3210.167.252.194 – 10.167.252.19410.167.252.194
6810.167.252.195/3210.167.252.195 – 10.167.252.19510.167.252.195
6910.167.252.196/3210.167.252.196 – 10.167.252.19610.167.252.196
7010.167.252.197/3210.167.252.197 – 10.167.252.19710.167.252.197
7110.167.252.198/3210.167.252.198 – 10.167.252.19810.167.252.198
7210.167.252.199/3210.167.252.199 – 10.167.252.19910.167.252.199
7310.167.252.200/3210.167.252.200 – 10.167.252.20010.167.252.200
7410.167.252.201/3210.167.252.201 – 10.167.252.20110.167.252.201
7510.167.252.202/3210.167.252.202 – 10.167.252.20210.167.252.202
7610.167.252.203/3210.167.252.203 – 10.167.252.20310.167.252.203
7710.167.252.204/3210.167.252.204 – 10.167.252.20410.167.252.204
7810.167.252.205/3210.167.252.205 – 10.167.252.20510.167.252.205
7910.167.252.206/3210.167.252.206 – 10.167.252.20610.167.252.206
8010.167.252.207/3210.167.252.207 – 10.167.252.20710.167.252.207
8110.167.252.208/3210.167.252.208 – 10.167.252.20810.167.252.208
8210.167.252.209/3210.167.252.209 – 10.167.252.20910.167.252.209
8310.167.252.210/3210.167.252.210 – 10.167.252.21010.167.252.210
8410.167.252.211/3210.167.252.211 – 10.167.252.21110.167.252.211
8510.167.252.212/3210.167.252.212 – 10.167.252.21210.167.252.212
8610.167.252.213/3210.167.252.213 – 10.167.252.21310.167.252.213
8710.167.252.214/3210.167.252.214 – 10.167.252.21410.167.252.214
8810.167.252.215/3210.167.252.215 – 10.167.252.21510.167.252.215
8910.167.252.216/3210.167.252.216 – 10.167.252.21610.167.252.216
9010.167.252.217/3210.167.252.217 – 10.167.252.21710.167.252.217
9110.167.252.218/3210.167.252.218 – 10.167.252.21810.167.252.218
9210.167.252.219/3210.167.252.219 – 10.167.252.21910.167.252.219
9310.167.252.220/3210.167.252.220 – 10.167.252.22010.167.252.220
9410.167.252.221/3210.167.252.221 – 10.167.252.22110.167.252.221
9510.167.252.222/3210.167.252.222 – 10.167.252.22210.167.252.222
9610.167.252.223/3210.167.252.223 – 10.167.252.22310.167.252.223
9710.167.252.224/3210.167.252.224 – 10.167.252.22410.167.252.224
9810.167.252.225/3210.167.252.225 – 10.167.252.22510.167.252.225
9910.167.252.226/3210.167.252.226 – 10.167.252.22610.167.252.226
10010.167.252.227/3210.167.252.227 – 10.167.252.22710.167.252.227
10110.167.252.228/3210.167.252.228 – 10.167.252.22810.167.252.228
10210.167.252.229/3210.167.252.229 – 10.167.252.22910.167.252.229
10310.167.252.230/3210.167.252.230 – 10.167.252.23010.167.252.230
10410.167.252.231/3210.167.252.231 – 10.167.252.23110.167.252.231
10510.167.252.232/3210.167.252.232 – 10.167.252.23210.167.252.232
10610.167.252.233/3210.167.252.233 – 10.167.252.23310.167.252.233
10710.167.252.234/3210.167.252.234 – 10.167.252.23410.167.252.234
10810.167.252.235/3210.167.252.235 – 10.167.252.23510.167.252.235
10910.167.252.236/3210.167.252.236 – 10.167.252.23610.167.252.236
11010.167.252.237/3210.167.252.237 – 10.167.252.23710.167.252.237
11110.167.252.238/3210.167.252.238 – 10.167.252.23810.167.252.238
11210.167.252.239/3210.167.252.239 – 10.167.252.23910.167.252.239
11310.167.252.240/3210.167.252.240 – 10.167.252.24010.167.252.240
11410.167.252.241/3210.167.252.241 – 10.167.252.24110.167.252.241
11510.167.252.242/3210.167.252.242 – 10.167.252.24210.167.252.242
11610.167.252.243/3210.167.252.243 – 10.167.252.24310.167.252.243
11710.167.252.244/3210.167.252.244 – 10.167.252.24410.167.252.244
11810.167.252.245/3210.167.252.245 – 10.167.252.24510.167.252.245
11910.167.252.246/3210.167.252.246 – 10.167.252.24610.167.252.246
12010.167.252.247/3210.167.252.247 – 10.167.252.24710.167.252.247
12110.167.252.248/3210.167.252.248 – 10.167.252.24810.167.252.248
12210.167.252.249/3210.167.252.249 – 10.167.252.24910.167.252.249
12310.167.252.250/3210.167.252.250 – 10.167.252.25010.167.252.250
12410.167.252.251/3210.167.252.251 – 10.167.252.25110.167.252.251
12510.167.252.252/3210.167.252.252 – 10.167.252.25210.167.252.252
12610.167.252.253/3210.167.252.253 – 10.167.252.25310.167.252.253
12710.167.252.254/3210.167.252.254 – 10.167.252.25410.167.252.254
12810.167.252.255/3210.167.252.255 – 10.167.252.25510.167.252.255
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 →