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)10.167.210.128/25
network10.167.210.128/25
broadcast10.167.210.255
first host10.167.210.129
last host10.167.210.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.210.128/25
address00001010.10100111.11010010.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.11010010.10000000
broadcast00001010.10100111.11010010.11111111
green = network part, grey = host part
hex0x0aa7d280
decimal178770560
reverse dns128.210.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:d280

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.210.128/3210.167.210.128 – 10.167.210.12810.167.210.128
210.167.210.129/3210.167.210.129 – 10.167.210.12910.167.210.129
310.167.210.130/3210.167.210.130 – 10.167.210.13010.167.210.130
410.167.210.131/3210.167.210.131 – 10.167.210.13110.167.210.131
510.167.210.132/3210.167.210.132 – 10.167.210.13210.167.210.132
610.167.210.133/3210.167.210.133 – 10.167.210.13310.167.210.133
710.167.210.134/3210.167.210.134 – 10.167.210.13410.167.210.134
810.167.210.135/3210.167.210.135 – 10.167.210.13510.167.210.135
910.167.210.136/3210.167.210.136 – 10.167.210.13610.167.210.136
1010.167.210.137/3210.167.210.137 – 10.167.210.13710.167.210.137
1110.167.210.138/3210.167.210.138 – 10.167.210.13810.167.210.138
1210.167.210.139/3210.167.210.139 – 10.167.210.13910.167.210.139
1310.167.210.140/3210.167.210.140 – 10.167.210.14010.167.210.140
1410.167.210.141/3210.167.210.141 – 10.167.210.14110.167.210.141
1510.167.210.142/3210.167.210.142 – 10.167.210.14210.167.210.142
1610.167.210.143/3210.167.210.143 – 10.167.210.14310.167.210.143
1710.167.210.144/3210.167.210.144 – 10.167.210.14410.167.210.144
1810.167.210.145/3210.167.210.145 – 10.167.210.14510.167.210.145
1910.167.210.146/3210.167.210.146 – 10.167.210.14610.167.210.146
2010.167.210.147/3210.167.210.147 – 10.167.210.14710.167.210.147
2110.167.210.148/3210.167.210.148 – 10.167.210.14810.167.210.148
2210.167.210.149/3210.167.210.149 – 10.167.210.14910.167.210.149
2310.167.210.150/3210.167.210.150 – 10.167.210.15010.167.210.150
2410.167.210.151/3210.167.210.151 – 10.167.210.15110.167.210.151
2510.167.210.152/3210.167.210.152 – 10.167.210.15210.167.210.152
2610.167.210.153/3210.167.210.153 – 10.167.210.15310.167.210.153
2710.167.210.154/3210.167.210.154 – 10.167.210.15410.167.210.154
2810.167.210.155/3210.167.210.155 – 10.167.210.15510.167.210.155
2910.167.210.156/3210.167.210.156 – 10.167.210.15610.167.210.156
3010.167.210.157/3210.167.210.157 – 10.167.210.15710.167.210.157
3110.167.210.158/3210.167.210.158 – 10.167.210.15810.167.210.158
3210.167.210.159/3210.167.210.159 – 10.167.210.15910.167.210.159
3310.167.210.160/3210.167.210.160 – 10.167.210.16010.167.210.160
3410.167.210.161/3210.167.210.161 – 10.167.210.16110.167.210.161
3510.167.210.162/3210.167.210.162 – 10.167.210.16210.167.210.162
3610.167.210.163/3210.167.210.163 – 10.167.210.16310.167.210.163
3710.167.210.164/3210.167.210.164 – 10.167.210.16410.167.210.164
3810.167.210.165/3210.167.210.165 – 10.167.210.16510.167.210.165
3910.167.210.166/3210.167.210.166 – 10.167.210.16610.167.210.166
4010.167.210.167/3210.167.210.167 – 10.167.210.16710.167.210.167
4110.167.210.168/3210.167.210.168 – 10.167.210.16810.167.210.168
4210.167.210.169/3210.167.210.169 – 10.167.210.16910.167.210.169
4310.167.210.170/3210.167.210.170 – 10.167.210.17010.167.210.170
4410.167.210.171/3210.167.210.171 – 10.167.210.17110.167.210.171
4510.167.210.172/3210.167.210.172 – 10.167.210.17210.167.210.172
4610.167.210.173/3210.167.210.173 – 10.167.210.17310.167.210.173
4710.167.210.174/3210.167.210.174 – 10.167.210.17410.167.210.174
4810.167.210.175/3210.167.210.175 – 10.167.210.17510.167.210.175
4910.167.210.176/3210.167.210.176 – 10.167.210.17610.167.210.176
5010.167.210.177/3210.167.210.177 – 10.167.210.17710.167.210.177
5110.167.210.178/3210.167.210.178 – 10.167.210.17810.167.210.178
5210.167.210.179/3210.167.210.179 – 10.167.210.17910.167.210.179
5310.167.210.180/3210.167.210.180 – 10.167.210.18010.167.210.180
5410.167.210.181/3210.167.210.181 – 10.167.210.18110.167.210.181
5510.167.210.182/3210.167.210.182 – 10.167.210.18210.167.210.182
5610.167.210.183/3210.167.210.183 – 10.167.210.18310.167.210.183
5710.167.210.184/3210.167.210.184 – 10.167.210.18410.167.210.184
5810.167.210.185/3210.167.210.185 – 10.167.210.18510.167.210.185
5910.167.210.186/3210.167.210.186 – 10.167.210.18610.167.210.186
6010.167.210.187/3210.167.210.187 – 10.167.210.18710.167.210.187
6110.167.210.188/3210.167.210.188 – 10.167.210.18810.167.210.188
6210.167.210.189/3210.167.210.189 – 10.167.210.18910.167.210.189
6310.167.210.190/3210.167.210.190 – 10.167.210.19010.167.210.190
6410.167.210.191/3210.167.210.191 – 10.167.210.19110.167.210.191
6510.167.210.192/3210.167.210.192 – 10.167.210.19210.167.210.192
6610.167.210.193/3210.167.210.193 – 10.167.210.19310.167.210.193
6710.167.210.194/3210.167.210.194 – 10.167.210.19410.167.210.194
6810.167.210.195/3210.167.210.195 – 10.167.210.19510.167.210.195
6910.167.210.196/3210.167.210.196 – 10.167.210.19610.167.210.196
7010.167.210.197/3210.167.210.197 – 10.167.210.19710.167.210.197
7110.167.210.198/3210.167.210.198 – 10.167.210.19810.167.210.198
7210.167.210.199/3210.167.210.199 – 10.167.210.19910.167.210.199
7310.167.210.200/3210.167.210.200 – 10.167.210.20010.167.210.200
7410.167.210.201/3210.167.210.201 – 10.167.210.20110.167.210.201
7510.167.210.202/3210.167.210.202 – 10.167.210.20210.167.210.202
7610.167.210.203/3210.167.210.203 – 10.167.210.20310.167.210.203
7710.167.210.204/3210.167.210.204 – 10.167.210.20410.167.210.204
7810.167.210.205/3210.167.210.205 – 10.167.210.20510.167.210.205
7910.167.210.206/3210.167.210.206 – 10.167.210.20610.167.210.206
8010.167.210.207/3210.167.210.207 – 10.167.210.20710.167.210.207
8110.167.210.208/3210.167.210.208 – 10.167.210.20810.167.210.208
8210.167.210.209/3210.167.210.209 – 10.167.210.20910.167.210.209
8310.167.210.210/3210.167.210.210 – 10.167.210.21010.167.210.210
8410.167.210.211/3210.167.210.211 – 10.167.210.21110.167.210.211
8510.167.210.212/3210.167.210.212 – 10.167.210.21210.167.210.212
8610.167.210.213/3210.167.210.213 – 10.167.210.21310.167.210.213
8710.167.210.214/3210.167.210.214 – 10.167.210.21410.167.210.214
8810.167.210.215/3210.167.210.215 – 10.167.210.21510.167.210.215
8910.167.210.216/3210.167.210.216 – 10.167.210.21610.167.210.216
9010.167.210.217/3210.167.210.217 – 10.167.210.21710.167.210.217
9110.167.210.218/3210.167.210.218 – 10.167.210.21810.167.210.218
9210.167.210.219/3210.167.210.219 – 10.167.210.21910.167.210.219
9310.167.210.220/3210.167.210.220 – 10.167.210.22010.167.210.220
9410.167.210.221/3210.167.210.221 – 10.167.210.22110.167.210.221
9510.167.210.222/3210.167.210.222 – 10.167.210.22210.167.210.222
9610.167.210.223/3210.167.210.223 – 10.167.210.22310.167.210.223
9710.167.210.224/3210.167.210.224 – 10.167.210.22410.167.210.224
9810.167.210.225/3210.167.210.225 – 10.167.210.22510.167.210.225
9910.167.210.226/3210.167.210.226 – 10.167.210.22610.167.210.226
10010.167.210.227/3210.167.210.227 – 10.167.210.22710.167.210.227
10110.167.210.228/3210.167.210.228 – 10.167.210.22810.167.210.228
10210.167.210.229/3210.167.210.229 – 10.167.210.22910.167.210.229
10310.167.210.230/3210.167.210.230 – 10.167.210.23010.167.210.230
10410.167.210.231/3210.167.210.231 – 10.167.210.23110.167.210.231
10510.167.210.232/3210.167.210.232 – 10.167.210.23210.167.210.232
10610.167.210.233/3210.167.210.233 – 10.167.210.23310.167.210.233
10710.167.210.234/3210.167.210.234 – 10.167.210.23410.167.210.234
10810.167.210.235/3210.167.210.235 – 10.167.210.23510.167.210.235
10910.167.210.236/3210.167.210.236 – 10.167.210.23610.167.210.236
11010.167.210.237/3210.167.210.237 – 10.167.210.23710.167.210.237
11110.167.210.238/3210.167.210.238 – 10.167.210.23810.167.210.238
11210.167.210.239/3210.167.210.239 – 10.167.210.23910.167.210.239
11310.167.210.240/3210.167.210.240 – 10.167.210.24010.167.210.240
11410.167.210.241/3210.167.210.241 – 10.167.210.24110.167.210.241
11510.167.210.242/3210.167.210.242 – 10.167.210.24210.167.210.242
11610.167.210.243/3210.167.210.243 – 10.167.210.24310.167.210.243
11710.167.210.244/3210.167.210.244 – 10.167.210.24410.167.210.244
11810.167.210.245/3210.167.210.245 – 10.167.210.24510.167.210.245
11910.167.210.246/3210.167.210.246 – 10.167.210.24610.167.210.246
12010.167.210.247/3210.167.210.247 – 10.167.210.24710.167.210.247
12110.167.210.248/3210.167.210.248 – 10.167.210.24810.167.210.248
12210.167.210.249/3210.167.210.249 – 10.167.210.24910.167.210.249
12310.167.210.250/3210.167.210.250 – 10.167.210.25010.167.210.250
12410.167.210.251/3210.167.210.251 – 10.167.210.25110.167.210.251
12510.167.210.252/3210.167.210.252 – 10.167.210.25210.167.210.252
12610.167.210.253/3210.167.210.253 – 10.167.210.25310.167.210.253
12710.167.210.254/3210.167.210.254 – 10.167.210.25410.167.210.254
12810.167.210.255/3210.167.210.255 – 10.167.210.25510.167.210.255
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 →