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)10.167.246.128/25
network10.167.246.128/25
broadcast10.167.246.255
first host10.167.246.129
last host10.167.246.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.246.128/25
address00001010.10100111.11110110.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.11110110.10000000
broadcast00001010.10100111.11110110.11111111
green = network part, grey = host part
hex0x0aa7f680
decimal178779776
reverse dns128.246.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:f680

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.246.128/3210.167.246.128 – 10.167.246.12810.167.246.128
210.167.246.129/3210.167.246.129 – 10.167.246.12910.167.246.129
310.167.246.130/3210.167.246.130 – 10.167.246.13010.167.246.130
410.167.246.131/3210.167.246.131 – 10.167.246.13110.167.246.131
510.167.246.132/3210.167.246.132 – 10.167.246.13210.167.246.132
610.167.246.133/3210.167.246.133 – 10.167.246.13310.167.246.133
710.167.246.134/3210.167.246.134 – 10.167.246.13410.167.246.134
810.167.246.135/3210.167.246.135 – 10.167.246.13510.167.246.135
910.167.246.136/3210.167.246.136 – 10.167.246.13610.167.246.136
1010.167.246.137/3210.167.246.137 – 10.167.246.13710.167.246.137
1110.167.246.138/3210.167.246.138 – 10.167.246.13810.167.246.138
1210.167.246.139/3210.167.246.139 – 10.167.246.13910.167.246.139
1310.167.246.140/3210.167.246.140 – 10.167.246.14010.167.246.140
1410.167.246.141/3210.167.246.141 – 10.167.246.14110.167.246.141
1510.167.246.142/3210.167.246.142 – 10.167.246.14210.167.246.142
1610.167.246.143/3210.167.246.143 – 10.167.246.14310.167.246.143
1710.167.246.144/3210.167.246.144 – 10.167.246.14410.167.246.144
1810.167.246.145/3210.167.246.145 – 10.167.246.14510.167.246.145
1910.167.246.146/3210.167.246.146 – 10.167.246.14610.167.246.146
2010.167.246.147/3210.167.246.147 – 10.167.246.14710.167.246.147
2110.167.246.148/3210.167.246.148 – 10.167.246.14810.167.246.148
2210.167.246.149/3210.167.246.149 – 10.167.246.14910.167.246.149
2310.167.246.150/3210.167.246.150 – 10.167.246.15010.167.246.150
2410.167.246.151/3210.167.246.151 – 10.167.246.15110.167.246.151
2510.167.246.152/3210.167.246.152 – 10.167.246.15210.167.246.152
2610.167.246.153/3210.167.246.153 – 10.167.246.15310.167.246.153
2710.167.246.154/3210.167.246.154 – 10.167.246.15410.167.246.154
2810.167.246.155/3210.167.246.155 – 10.167.246.15510.167.246.155
2910.167.246.156/3210.167.246.156 – 10.167.246.15610.167.246.156
3010.167.246.157/3210.167.246.157 – 10.167.246.15710.167.246.157
3110.167.246.158/3210.167.246.158 – 10.167.246.15810.167.246.158
3210.167.246.159/3210.167.246.159 – 10.167.246.15910.167.246.159
3310.167.246.160/3210.167.246.160 – 10.167.246.16010.167.246.160
3410.167.246.161/3210.167.246.161 – 10.167.246.16110.167.246.161
3510.167.246.162/3210.167.246.162 – 10.167.246.16210.167.246.162
3610.167.246.163/3210.167.246.163 – 10.167.246.16310.167.246.163
3710.167.246.164/3210.167.246.164 – 10.167.246.16410.167.246.164
3810.167.246.165/3210.167.246.165 – 10.167.246.16510.167.246.165
3910.167.246.166/3210.167.246.166 – 10.167.246.16610.167.246.166
4010.167.246.167/3210.167.246.167 – 10.167.246.16710.167.246.167
4110.167.246.168/3210.167.246.168 – 10.167.246.16810.167.246.168
4210.167.246.169/3210.167.246.169 – 10.167.246.16910.167.246.169
4310.167.246.170/3210.167.246.170 – 10.167.246.17010.167.246.170
4410.167.246.171/3210.167.246.171 – 10.167.246.17110.167.246.171
4510.167.246.172/3210.167.246.172 – 10.167.246.17210.167.246.172
4610.167.246.173/3210.167.246.173 – 10.167.246.17310.167.246.173
4710.167.246.174/3210.167.246.174 – 10.167.246.17410.167.246.174
4810.167.246.175/3210.167.246.175 – 10.167.246.17510.167.246.175
4910.167.246.176/3210.167.246.176 – 10.167.246.17610.167.246.176
5010.167.246.177/3210.167.246.177 – 10.167.246.17710.167.246.177
5110.167.246.178/3210.167.246.178 – 10.167.246.17810.167.246.178
5210.167.246.179/3210.167.246.179 – 10.167.246.17910.167.246.179
5310.167.246.180/3210.167.246.180 – 10.167.246.18010.167.246.180
5410.167.246.181/3210.167.246.181 – 10.167.246.18110.167.246.181
5510.167.246.182/3210.167.246.182 – 10.167.246.18210.167.246.182
5610.167.246.183/3210.167.246.183 – 10.167.246.18310.167.246.183
5710.167.246.184/3210.167.246.184 – 10.167.246.18410.167.246.184
5810.167.246.185/3210.167.246.185 – 10.167.246.18510.167.246.185
5910.167.246.186/3210.167.246.186 – 10.167.246.18610.167.246.186
6010.167.246.187/3210.167.246.187 – 10.167.246.18710.167.246.187
6110.167.246.188/3210.167.246.188 – 10.167.246.18810.167.246.188
6210.167.246.189/3210.167.246.189 – 10.167.246.18910.167.246.189
6310.167.246.190/3210.167.246.190 – 10.167.246.19010.167.246.190
6410.167.246.191/3210.167.246.191 – 10.167.246.19110.167.246.191
6510.167.246.192/3210.167.246.192 – 10.167.246.19210.167.246.192
6610.167.246.193/3210.167.246.193 – 10.167.246.19310.167.246.193
6710.167.246.194/3210.167.246.194 – 10.167.246.19410.167.246.194
6810.167.246.195/3210.167.246.195 – 10.167.246.19510.167.246.195
6910.167.246.196/3210.167.246.196 – 10.167.246.19610.167.246.196
7010.167.246.197/3210.167.246.197 – 10.167.246.19710.167.246.197
7110.167.246.198/3210.167.246.198 – 10.167.246.19810.167.246.198
7210.167.246.199/3210.167.246.199 – 10.167.246.19910.167.246.199
7310.167.246.200/3210.167.246.200 – 10.167.246.20010.167.246.200
7410.167.246.201/3210.167.246.201 – 10.167.246.20110.167.246.201
7510.167.246.202/3210.167.246.202 – 10.167.246.20210.167.246.202
7610.167.246.203/3210.167.246.203 – 10.167.246.20310.167.246.203
7710.167.246.204/3210.167.246.204 – 10.167.246.20410.167.246.204
7810.167.246.205/3210.167.246.205 – 10.167.246.20510.167.246.205
7910.167.246.206/3210.167.246.206 – 10.167.246.20610.167.246.206
8010.167.246.207/3210.167.246.207 – 10.167.246.20710.167.246.207
8110.167.246.208/3210.167.246.208 – 10.167.246.20810.167.246.208
8210.167.246.209/3210.167.246.209 – 10.167.246.20910.167.246.209
8310.167.246.210/3210.167.246.210 – 10.167.246.21010.167.246.210
8410.167.246.211/3210.167.246.211 – 10.167.246.21110.167.246.211
8510.167.246.212/3210.167.246.212 – 10.167.246.21210.167.246.212
8610.167.246.213/3210.167.246.213 – 10.167.246.21310.167.246.213
8710.167.246.214/3210.167.246.214 – 10.167.246.21410.167.246.214
8810.167.246.215/3210.167.246.215 – 10.167.246.21510.167.246.215
8910.167.246.216/3210.167.246.216 – 10.167.246.21610.167.246.216
9010.167.246.217/3210.167.246.217 – 10.167.246.21710.167.246.217
9110.167.246.218/3210.167.246.218 – 10.167.246.21810.167.246.218
9210.167.246.219/3210.167.246.219 – 10.167.246.21910.167.246.219
9310.167.246.220/3210.167.246.220 – 10.167.246.22010.167.246.220
9410.167.246.221/3210.167.246.221 – 10.167.246.22110.167.246.221
9510.167.246.222/3210.167.246.222 – 10.167.246.22210.167.246.222
9610.167.246.223/3210.167.246.223 – 10.167.246.22310.167.246.223
9710.167.246.224/3210.167.246.224 – 10.167.246.22410.167.246.224
9810.167.246.225/3210.167.246.225 – 10.167.246.22510.167.246.225
9910.167.246.226/3210.167.246.226 – 10.167.246.22610.167.246.226
10010.167.246.227/3210.167.246.227 – 10.167.246.22710.167.246.227
10110.167.246.228/3210.167.246.228 – 10.167.246.22810.167.246.228
10210.167.246.229/3210.167.246.229 – 10.167.246.22910.167.246.229
10310.167.246.230/3210.167.246.230 – 10.167.246.23010.167.246.230
10410.167.246.231/3210.167.246.231 – 10.167.246.23110.167.246.231
10510.167.246.232/3210.167.246.232 – 10.167.246.23210.167.246.232
10610.167.246.233/3210.167.246.233 – 10.167.246.23310.167.246.233
10710.167.246.234/3210.167.246.234 – 10.167.246.23410.167.246.234
10810.167.246.235/3210.167.246.235 – 10.167.246.23510.167.246.235
10910.167.246.236/3210.167.246.236 – 10.167.246.23610.167.246.236
11010.167.246.237/3210.167.246.237 – 10.167.246.23710.167.246.237
11110.167.246.238/3210.167.246.238 – 10.167.246.23810.167.246.238
11210.167.246.239/3210.167.246.239 – 10.167.246.23910.167.246.239
11310.167.246.240/3210.167.246.240 – 10.167.246.24010.167.246.240
11410.167.246.241/3210.167.246.241 – 10.167.246.24110.167.246.241
11510.167.246.242/3210.167.246.242 – 10.167.246.24210.167.246.242
11610.167.246.243/3210.167.246.243 – 10.167.246.24310.167.246.243
11710.167.246.244/3210.167.246.244 – 10.167.246.24410.167.246.244
11810.167.246.245/3210.167.246.245 – 10.167.246.24510.167.246.245
11910.167.246.246/3210.167.246.246 – 10.167.246.24610.167.246.246
12010.167.246.247/3210.167.246.247 – 10.167.246.24710.167.246.247
12110.167.246.248/3210.167.246.248 – 10.167.246.24810.167.246.248
12210.167.246.249/3210.167.246.249 – 10.167.246.24910.167.246.249
12310.167.246.250/3210.167.246.250 – 10.167.246.25010.167.246.250
12410.167.246.251/3210.167.246.251 – 10.167.246.25110.167.246.251
12510.167.246.252/3210.167.246.252 – 10.167.246.25210.167.246.252
12610.167.246.253/3210.167.246.253 – 10.167.246.25310.167.246.253
12710.167.246.254/3210.167.246.254 – 10.167.246.25410.167.246.254
12810.167.246.255/3210.167.246.255 – 10.167.246.25510.167.246.255
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 →