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)10.167.97.128/25
network10.167.97.128/25
broadcast10.167.97.255
first host10.167.97.129
last host10.167.97.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.97.128/25
address00001010.10100111.01100001.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.01100001.10000000
broadcast00001010.10100111.01100001.11111111
green = network part, grey = host part
hex0x0aa76180
decimal178741632
reverse dns128.97.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:6180

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.97.128/3210.167.97.128 – 10.167.97.12810.167.97.128
210.167.97.129/3210.167.97.129 – 10.167.97.12910.167.97.129
310.167.97.130/3210.167.97.130 – 10.167.97.13010.167.97.130
410.167.97.131/3210.167.97.131 – 10.167.97.13110.167.97.131
510.167.97.132/3210.167.97.132 – 10.167.97.13210.167.97.132
610.167.97.133/3210.167.97.133 – 10.167.97.13310.167.97.133
710.167.97.134/3210.167.97.134 – 10.167.97.13410.167.97.134
810.167.97.135/3210.167.97.135 – 10.167.97.13510.167.97.135
910.167.97.136/3210.167.97.136 – 10.167.97.13610.167.97.136
1010.167.97.137/3210.167.97.137 – 10.167.97.13710.167.97.137
1110.167.97.138/3210.167.97.138 – 10.167.97.13810.167.97.138
1210.167.97.139/3210.167.97.139 – 10.167.97.13910.167.97.139
1310.167.97.140/3210.167.97.140 – 10.167.97.14010.167.97.140
1410.167.97.141/3210.167.97.141 – 10.167.97.14110.167.97.141
1510.167.97.142/3210.167.97.142 – 10.167.97.14210.167.97.142
1610.167.97.143/3210.167.97.143 – 10.167.97.14310.167.97.143
1710.167.97.144/3210.167.97.144 – 10.167.97.14410.167.97.144
1810.167.97.145/3210.167.97.145 – 10.167.97.14510.167.97.145
1910.167.97.146/3210.167.97.146 – 10.167.97.14610.167.97.146
2010.167.97.147/3210.167.97.147 – 10.167.97.14710.167.97.147
2110.167.97.148/3210.167.97.148 – 10.167.97.14810.167.97.148
2210.167.97.149/3210.167.97.149 – 10.167.97.14910.167.97.149
2310.167.97.150/3210.167.97.150 – 10.167.97.15010.167.97.150
2410.167.97.151/3210.167.97.151 – 10.167.97.15110.167.97.151
2510.167.97.152/3210.167.97.152 – 10.167.97.15210.167.97.152
2610.167.97.153/3210.167.97.153 – 10.167.97.15310.167.97.153
2710.167.97.154/3210.167.97.154 – 10.167.97.15410.167.97.154
2810.167.97.155/3210.167.97.155 – 10.167.97.15510.167.97.155
2910.167.97.156/3210.167.97.156 – 10.167.97.15610.167.97.156
3010.167.97.157/3210.167.97.157 – 10.167.97.15710.167.97.157
3110.167.97.158/3210.167.97.158 – 10.167.97.15810.167.97.158
3210.167.97.159/3210.167.97.159 – 10.167.97.15910.167.97.159
3310.167.97.160/3210.167.97.160 – 10.167.97.16010.167.97.160
3410.167.97.161/3210.167.97.161 – 10.167.97.16110.167.97.161
3510.167.97.162/3210.167.97.162 – 10.167.97.16210.167.97.162
3610.167.97.163/3210.167.97.163 – 10.167.97.16310.167.97.163
3710.167.97.164/3210.167.97.164 – 10.167.97.16410.167.97.164
3810.167.97.165/3210.167.97.165 – 10.167.97.16510.167.97.165
3910.167.97.166/3210.167.97.166 – 10.167.97.16610.167.97.166
4010.167.97.167/3210.167.97.167 – 10.167.97.16710.167.97.167
4110.167.97.168/3210.167.97.168 – 10.167.97.16810.167.97.168
4210.167.97.169/3210.167.97.169 – 10.167.97.16910.167.97.169
4310.167.97.170/3210.167.97.170 – 10.167.97.17010.167.97.170
4410.167.97.171/3210.167.97.171 – 10.167.97.17110.167.97.171
4510.167.97.172/3210.167.97.172 – 10.167.97.17210.167.97.172
4610.167.97.173/3210.167.97.173 – 10.167.97.17310.167.97.173
4710.167.97.174/3210.167.97.174 – 10.167.97.17410.167.97.174
4810.167.97.175/3210.167.97.175 – 10.167.97.17510.167.97.175
4910.167.97.176/3210.167.97.176 – 10.167.97.17610.167.97.176
5010.167.97.177/3210.167.97.177 – 10.167.97.17710.167.97.177
5110.167.97.178/3210.167.97.178 – 10.167.97.17810.167.97.178
5210.167.97.179/3210.167.97.179 – 10.167.97.17910.167.97.179
5310.167.97.180/3210.167.97.180 – 10.167.97.18010.167.97.180
5410.167.97.181/3210.167.97.181 – 10.167.97.18110.167.97.181
5510.167.97.182/3210.167.97.182 – 10.167.97.18210.167.97.182
5610.167.97.183/3210.167.97.183 – 10.167.97.18310.167.97.183
5710.167.97.184/3210.167.97.184 – 10.167.97.18410.167.97.184
5810.167.97.185/3210.167.97.185 – 10.167.97.18510.167.97.185
5910.167.97.186/3210.167.97.186 – 10.167.97.18610.167.97.186
6010.167.97.187/3210.167.97.187 – 10.167.97.18710.167.97.187
6110.167.97.188/3210.167.97.188 – 10.167.97.18810.167.97.188
6210.167.97.189/3210.167.97.189 – 10.167.97.18910.167.97.189
6310.167.97.190/3210.167.97.190 – 10.167.97.19010.167.97.190
6410.167.97.191/3210.167.97.191 – 10.167.97.19110.167.97.191
6510.167.97.192/3210.167.97.192 – 10.167.97.19210.167.97.192
6610.167.97.193/3210.167.97.193 – 10.167.97.19310.167.97.193
6710.167.97.194/3210.167.97.194 – 10.167.97.19410.167.97.194
6810.167.97.195/3210.167.97.195 – 10.167.97.19510.167.97.195
6910.167.97.196/3210.167.97.196 – 10.167.97.19610.167.97.196
7010.167.97.197/3210.167.97.197 – 10.167.97.19710.167.97.197
7110.167.97.198/3210.167.97.198 – 10.167.97.19810.167.97.198
7210.167.97.199/3210.167.97.199 – 10.167.97.19910.167.97.199
7310.167.97.200/3210.167.97.200 – 10.167.97.20010.167.97.200
7410.167.97.201/3210.167.97.201 – 10.167.97.20110.167.97.201
7510.167.97.202/3210.167.97.202 – 10.167.97.20210.167.97.202
7610.167.97.203/3210.167.97.203 – 10.167.97.20310.167.97.203
7710.167.97.204/3210.167.97.204 – 10.167.97.20410.167.97.204
7810.167.97.205/3210.167.97.205 – 10.167.97.20510.167.97.205
7910.167.97.206/3210.167.97.206 – 10.167.97.20610.167.97.206
8010.167.97.207/3210.167.97.207 – 10.167.97.20710.167.97.207
8110.167.97.208/3210.167.97.208 – 10.167.97.20810.167.97.208
8210.167.97.209/3210.167.97.209 – 10.167.97.20910.167.97.209
8310.167.97.210/3210.167.97.210 – 10.167.97.21010.167.97.210
8410.167.97.211/3210.167.97.211 – 10.167.97.21110.167.97.211
8510.167.97.212/3210.167.97.212 – 10.167.97.21210.167.97.212
8610.167.97.213/3210.167.97.213 – 10.167.97.21310.167.97.213
8710.167.97.214/3210.167.97.214 – 10.167.97.21410.167.97.214
8810.167.97.215/3210.167.97.215 – 10.167.97.21510.167.97.215
8910.167.97.216/3210.167.97.216 – 10.167.97.21610.167.97.216
9010.167.97.217/3210.167.97.217 – 10.167.97.21710.167.97.217
9110.167.97.218/3210.167.97.218 – 10.167.97.21810.167.97.218
9210.167.97.219/3210.167.97.219 – 10.167.97.21910.167.97.219
9310.167.97.220/3210.167.97.220 – 10.167.97.22010.167.97.220
9410.167.97.221/3210.167.97.221 – 10.167.97.22110.167.97.221
9510.167.97.222/3210.167.97.222 – 10.167.97.22210.167.97.222
9610.167.97.223/3210.167.97.223 – 10.167.97.22310.167.97.223
9710.167.97.224/3210.167.97.224 – 10.167.97.22410.167.97.224
9810.167.97.225/3210.167.97.225 – 10.167.97.22510.167.97.225
9910.167.97.226/3210.167.97.226 – 10.167.97.22610.167.97.226
10010.167.97.227/3210.167.97.227 – 10.167.97.22710.167.97.227
10110.167.97.228/3210.167.97.228 – 10.167.97.22810.167.97.228
10210.167.97.229/3210.167.97.229 – 10.167.97.22910.167.97.229
10310.167.97.230/3210.167.97.230 – 10.167.97.23010.167.97.230
10410.167.97.231/3210.167.97.231 – 10.167.97.23110.167.97.231
10510.167.97.232/3210.167.97.232 – 10.167.97.23210.167.97.232
10610.167.97.233/3210.167.97.233 – 10.167.97.23310.167.97.233
10710.167.97.234/3210.167.97.234 – 10.167.97.23410.167.97.234
10810.167.97.235/3210.167.97.235 – 10.167.97.23510.167.97.235
10910.167.97.236/3210.167.97.236 – 10.167.97.23610.167.97.236
11010.167.97.237/3210.167.97.237 – 10.167.97.23710.167.97.237
11110.167.97.238/3210.167.97.238 – 10.167.97.23810.167.97.238
11210.167.97.239/3210.167.97.239 – 10.167.97.23910.167.97.239
11310.167.97.240/3210.167.97.240 – 10.167.97.24010.167.97.240
11410.167.97.241/3210.167.97.241 – 10.167.97.24110.167.97.241
11510.167.97.242/3210.167.97.242 – 10.167.97.24210.167.97.242
11610.167.97.243/3210.167.97.243 – 10.167.97.24310.167.97.243
11710.167.97.244/3210.167.97.244 – 10.167.97.24410.167.97.244
11810.167.97.245/3210.167.97.245 – 10.167.97.24510.167.97.245
11910.167.97.246/3210.167.97.246 – 10.167.97.24610.167.97.246
12010.167.97.247/3210.167.97.247 – 10.167.97.24710.167.97.247
12110.167.97.248/3210.167.97.248 – 10.167.97.24810.167.97.248
12210.167.97.249/3210.167.97.249 – 10.167.97.24910.167.97.249
12310.167.97.250/3210.167.97.250 – 10.167.97.25010.167.97.250
12410.167.97.251/3210.167.97.251 – 10.167.97.25110.167.97.251
12510.167.97.252/3210.167.97.252 – 10.167.97.25210.167.97.252
12610.167.97.253/3210.167.97.253 – 10.167.97.25310.167.97.253
12710.167.97.254/3210.167.97.254 – 10.167.97.25410.167.97.254
12810.167.97.255/3210.167.97.255 – 10.167.97.25510.167.97.255
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 →