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)10.167.175.128/25
network10.167.175.128/25
broadcast10.167.175.255
first host10.167.175.129
last host10.167.175.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.175.128/25
address00001010.10100111.10101111.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.10101111.10000000
broadcast00001010.10100111.10101111.11111111
green = network part, grey = host part
hex0x0aa7af80
decimal178761600
reverse dns128.175.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:af80

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.175.128/3210.167.175.128 – 10.167.175.12810.167.175.128
210.167.175.129/3210.167.175.129 – 10.167.175.12910.167.175.129
310.167.175.130/3210.167.175.130 – 10.167.175.13010.167.175.130
410.167.175.131/3210.167.175.131 – 10.167.175.13110.167.175.131
510.167.175.132/3210.167.175.132 – 10.167.175.13210.167.175.132
610.167.175.133/3210.167.175.133 – 10.167.175.13310.167.175.133
710.167.175.134/3210.167.175.134 – 10.167.175.13410.167.175.134
810.167.175.135/3210.167.175.135 – 10.167.175.13510.167.175.135
910.167.175.136/3210.167.175.136 – 10.167.175.13610.167.175.136
1010.167.175.137/3210.167.175.137 – 10.167.175.13710.167.175.137
1110.167.175.138/3210.167.175.138 – 10.167.175.13810.167.175.138
1210.167.175.139/3210.167.175.139 – 10.167.175.13910.167.175.139
1310.167.175.140/3210.167.175.140 – 10.167.175.14010.167.175.140
1410.167.175.141/3210.167.175.141 – 10.167.175.14110.167.175.141
1510.167.175.142/3210.167.175.142 – 10.167.175.14210.167.175.142
1610.167.175.143/3210.167.175.143 – 10.167.175.14310.167.175.143
1710.167.175.144/3210.167.175.144 – 10.167.175.14410.167.175.144
1810.167.175.145/3210.167.175.145 – 10.167.175.14510.167.175.145
1910.167.175.146/3210.167.175.146 – 10.167.175.14610.167.175.146
2010.167.175.147/3210.167.175.147 – 10.167.175.14710.167.175.147
2110.167.175.148/3210.167.175.148 – 10.167.175.14810.167.175.148
2210.167.175.149/3210.167.175.149 – 10.167.175.14910.167.175.149
2310.167.175.150/3210.167.175.150 – 10.167.175.15010.167.175.150
2410.167.175.151/3210.167.175.151 – 10.167.175.15110.167.175.151
2510.167.175.152/3210.167.175.152 – 10.167.175.15210.167.175.152
2610.167.175.153/3210.167.175.153 – 10.167.175.15310.167.175.153
2710.167.175.154/3210.167.175.154 – 10.167.175.15410.167.175.154
2810.167.175.155/3210.167.175.155 – 10.167.175.15510.167.175.155
2910.167.175.156/3210.167.175.156 – 10.167.175.15610.167.175.156
3010.167.175.157/3210.167.175.157 – 10.167.175.15710.167.175.157
3110.167.175.158/3210.167.175.158 – 10.167.175.15810.167.175.158
3210.167.175.159/3210.167.175.159 – 10.167.175.15910.167.175.159
3310.167.175.160/3210.167.175.160 – 10.167.175.16010.167.175.160
3410.167.175.161/3210.167.175.161 – 10.167.175.16110.167.175.161
3510.167.175.162/3210.167.175.162 – 10.167.175.16210.167.175.162
3610.167.175.163/3210.167.175.163 – 10.167.175.16310.167.175.163
3710.167.175.164/3210.167.175.164 – 10.167.175.16410.167.175.164
3810.167.175.165/3210.167.175.165 – 10.167.175.16510.167.175.165
3910.167.175.166/3210.167.175.166 – 10.167.175.16610.167.175.166
4010.167.175.167/3210.167.175.167 – 10.167.175.16710.167.175.167
4110.167.175.168/3210.167.175.168 – 10.167.175.16810.167.175.168
4210.167.175.169/3210.167.175.169 – 10.167.175.16910.167.175.169
4310.167.175.170/3210.167.175.170 – 10.167.175.17010.167.175.170
4410.167.175.171/3210.167.175.171 – 10.167.175.17110.167.175.171
4510.167.175.172/3210.167.175.172 – 10.167.175.17210.167.175.172
4610.167.175.173/3210.167.175.173 – 10.167.175.17310.167.175.173
4710.167.175.174/3210.167.175.174 – 10.167.175.17410.167.175.174
4810.167.175.175/3210.167.175.175 – 10.167.175.17510.167.175.175
4910.167.175.176/3210.167.175.176 – 10.167.175.17610.167.175.176
5010.167.175.177/3210.167.175.177 – 10.167.175.17710.167.175.177
5110.167.175.178/3210.167.175.178 – 10.167.175.17810.167.175.178
5210.167.175.179/3210.167.175.179 – 10.167.175.17910.167.175.179
5310.167.175.180/3210.167.175.180 – 10.167.175.18010.167.175.180
5410.167.175.181/3210.167.175.181 – 10.167.175.18110.167.175.181
5510.167.175.182/3210.167.175.182 – 10.167.175.18210.167.175.182
5610.167.175.183/3210.167.175.183 – 10.167.175.18310.167.175.183
5710.167.175.184/3210.167.175.184 – 10.167.175.18410.167.175.184
5810.167.175.185/3210.167.175.185 – 10.167.175.18510.167.175.185
5910.167.175.186/3210.167.175.186 – 10.167.175.18610.167.175.186
6010.167.175.187/3210.167.175.187 – 10.167.175.18710.167.175.187
6110.167.175.188/3210.167.175.188 – 10.167.175.18810.167.175.188
6210.167.175.189/3210.167.175.189 – 10.167.175.18910.167.175.189
6310.167.175.190/3210.167.175.190 – 10.167.175.19010.167.175.190
6410.167.175.191/3210.167.175.191 – 10.167.175.19110.167.175.191
6510.167.175.192/3210.167.175.192 – 10.167.175.19210.167.175.192
6610.167.175.193/3210.167.175.193 – 10.167.175.19310.167.175.193
6710.167.175.194/3210.167.175.194 – 10.167.175.19410.167.175.194
6810.167.175.195/3210.167.175.195 – 10.167.175.19510.167.175.195
6910.167.175.196/3210.167.175.196 – 10.167.175.19610.167.175.196
7010.167.175.197/3210.167.175.197 – 10.167.175.19710.167.175.197
7110.167.175.198/3210.167.175.198 – 10.167.175.19810.167.175.198
7210.167.175.199/3210.167.175.199 – 10.167.175.19910.167.175.199
7310.167.175.200/3210.167.175.200 – 10.167.175.20010.167.175.200
7410.167.175.201/3210.167.175.201 – 10.167.175.20110.167.175.201
7510.167.175.202/3210.167.175.202 – 10.167.175.20210.167.175.202
7610.167.175.203/3210.167.175.203 – 10.167.175.20310.167.175.203
7710.167.175.204/3210.167.175.204 – 10.167.175.20410.167.175.204
7810.167.175.205/3210.167.175.205 – 10.167.175.20510.167.175.205
7910.167.175.206/3210.167.175.206 – 10.167.175.20610.167.175.206
8010.167.175.207/3210.167.175.207 – 10.167.175.20710.167.175.207
8110.167.175.208/3210.167.175.208 – 10.167.175.20810.167.175.208
8210.167.175.209/3210.167.175.209 – 10.167.175.20910.167.175.209
8310.167.175.210/3210.167.175.210 – 10.167.175.21010.167.175.210
8410.167.175.211/3210.167.175.211 – 10.167.175.21110.167.175.211
8510.167.175.212/3210.167.175.212 – 10.167.175.21210.167.175.212
8610.167.175.213/3210.167.175.213 – 10.167.175.21310.167.175.213
8710.167.175.214/3210.167.175.214 – 10.167.175.21410.167.175.214
8810.167.175.215/3210.167.175.215 – 10.167.175.21510.167.175.215
8910.167.175.216/3210.167.175.216 – 10.167.175.21610.167.175.216
9010.167.175.217/3210.167.175.217 – 10.167.175.21710.167.175.217
9110.167.175.218/3210.167.175.218 – 10.167.175.21810.167.175.218
9210.167.175.219/3210.167.175.219 – 10.167.175.21910.167.175.219
9310.167.175.220/3210.167.175.220 – 10.167.175.22010.167.175.220
9410.167.175.221/3210.167.175.221 – 10.167.175.22110.167.175.221
9510.167.175.222/3210.167.175.222 – 10.167.175.22210.167.175.222
9610.167.175.223/3210.167.175.223 – 10.167.175.22310.167.175.223
9710.167.175.224/3210.167.175.224 – 10.167.175.22410.167.175.224
9810.167.175.225/3210.167.175.225 – 10.167.175.22510.167.175.225
9910.167.175.226/3210.167.175.226 – 10.167.175.22610.167.175.226
10010.167.175.227/3210.167.175.227 – 10.167.175.22710.167.175.227
10110.167.175.228/3210.167.175.228 – 10.167.175.22810.167.175.228
10210.167.175.229/3210.167.175.229 – 10.167.175.22910.167.175.229
10310.167.175.230/3210.167.175.230 – 10.167.175.23010.167.175.230
10410.167.175.231/3210.167.175.231 – 10.167.175.23110.167.175.231
10510.167.175.232/3210.167.175.232 – 10.167.175.23210.167.175.232
10610.167.175.233/3210.167.175.233 – 10.167.175.23310.167.175.233
10710.167.175.234/3210.167.175.234 – 10.167.175.23410.167.175.234
10810.167.175.235/3210.167.175.235 – 10.167.175.23510.167.175.235
10910.167.175.236/3210.167.175.236 – 10.167.175.23610.167.175.236
11010.167.175.237/3210.167.175.237 – 10.167.175.23710.167.175.237
11110.167.175.238/3210.167.175.238 – 10.167.175.23810.167.175.238
11210.167.175.239/3210.167.175.239 – 10.167.175.23910.167.175.239
11310.167.175.240/3210.167.175.240 – 10.167.175.24010.167.175.240
11410.167.175.241/3210.167.175.241 – 10.167.175.24110.167.175.241
11510.167.175.242/3210.167.175.242 – 10.167.175.24210.167.175.242
11610.167.175.243/3210.167.175.243 – 10.167.175.24310.167.175.243
11710.167.175.244/3210.167.175.244 – 10.167.175.24410.167.175.244
11810.167.175.245/3210.167.175.245 – 10.167.175.24510.167.175.245
11910.167.175.246/3210.167.175.246 – 10.167.175.24610.167.175.246
12010.167.175.247/3210.167.175.247 – 10.167.175.24710.167.175.247
12110.167.175.248/3210.167.175.248 – 10.167.175.24810.167.175.248
12210.167.175.249/3210.167.175.249 – 10.167.175.24910.167.175.249
12310.167.175.250/3210.167.175.250 – 10.167.175.25010.167.175.250
12410.167.175.251/3210.167.175.251 – 10.167.175.25110.167.175.251
12510.167.175.252/3210.167.175.252 – 10.167.175.25210.167.175.252
12610.167.175.253/3210.167.175.253 – 10.167.175.25310.167.175.253
12710.167.175.254/3210.167.175.254 – 10.167.175.25410.167.175.254
12810.167.175.255/3210.167.175.255 – 10.167.175.25510.167.175.255
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 →