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)10.167.244.128/25
network10.167.244.128/25
broadcast10.167.244.255
first host10.167.244.129
last host10.167.244.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.244.128/25
address00001010.10100111.11110100.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.11110100.10000000
broadcast00001010.10100111.11110100.11111111
green = network part, grey = host part
hex0x0aa7f480
decimal178779264
reverse dns128.244.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:f480

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.244.128/3210.167.244.128 – 10.167.244.12810.167.244.128
210.167.244.129/3210.167.244.129 – 10.167.244.12910.167.244.129
310.167.244.130/3210.167.244.130 – 10.167.244.13010.167.244.130
410.167.244.131/3210.167.244.131 – 10.167.244.13110.167.244.131
510.167.244.132/3210.167.244.132 – 10.167.244.13210.167.244.132
610.167.244.133/3210.167.244.133 – 10.167.244.13310.167.244.133
710.167.244.134/3210.167.244.134 – 10.167.244.13410.167.244.134
810.167.244.135/3210.167.244.135 – 10.167.244.13510.167.244.135
910.167.244.136/3210.167.244.136 – 10.167.244.13610.167.244.136
1010.167.244.137/3210.167.244.137 – 10.167.244.13710.167.244.137
1110.167.244.138/3210.167.244.138 – 10.167.244.13810.167.244.138
1210.167.244.139/3210.167.244.139 – 10.167.244.13910.167.244.139
1310.167.244.140/3210.167.244.140 – 10.167.244.14010.167.244.140
1410.167.244.141/3210.167.244.141 – 10.167.244.14110.167.244.141
1510.167.244.142/3210.167.244.142 – 10.167.244.14210.167.244.142
1610.167.244.143/3210.167.244.143 – 10.167.244.14310.167.244.143
1710.167.244.144/3210.167.244.144 – 10.167.244.14410.167.244.144
1810.167.244.145/3210.167.244.145 – 10.167.244.14510.167.244.145
1910.167.244.146/3210.167.244.146 – 10.167.244.14610.167.244.146
2010.167.244.147/3210.167.244.147 – 10.167.244.14710.167.244.147
2110.167.244.148/3210.167.244.148 – 10.167.244.14810.167.244.148
2210.167.244.149/3210.167.244.149 – 10.167.244.14910.167.244.149
2310.167.244.150/3210.167.244.150 – 10.167.244.15010.167.244.150
2410.167.244.151/3210.167.244.151 – 10.167.244.15110.167.244.151
2510.167.244.152/3210.167.244.152 – 10.167.244.15210.167.244.152
2610.167.244.153/3210.167.244.153 – 10.167.244.15310.167.244.153
2710.167.244.154/3210.167.244.154 – 10.167.244.15410.167.244.154
2810.167.244.155/3210.167.244.155 – 10.167.244.15510.167.244.155
2910.167.244.156/3210.167.244.156 – 10.167.244.15610.167.244.156
3010.167.244.157/3210.167.244.157 – 10.167.244.15710.167.244.157
3110.167.244.158/3210.167.244.158 – 10.167.244.15810.167.244.158
3210.167.244.159/3210.167.244.159 – 10.167.244.15910.167.244.159
3310.167.244.160/3210.167.244.160 – 10.167.244.16010.167.244.160
3410.167.244.161/3210.167.244.161 – 10.167.244.16110.167.244.161
3510.167.244.162/3210.167.244.162 – 10.167.244.16210.167.244.162
3610.167.244.163/3210.167.244.163 – 10.167.244.16310.167.244.163
3710.167.244.164/3210.167.244.164 – 10.167.244.16410.167.244.164
3810.167.244.165/3210.167.244.165 – 10.167.244.16510.167.244.165
3910.167.244.166/3210.167.244.166 – 10.167.244.16610.167.244.166
4010.167.244.167/3210.167.244.167 – 10.167.244.16710.167.244.167
4110.167.244.168/3210.167.244.168 – 10.167.244.16810.167.244.168
4210.167.244.169/3210.167.244.169 – 10.167.244.16910.167.244.169
4310.167.244.170/3210.167.244.170 – 10.167.244.17010.167.244.170
4410.167.244.171/3210.167.244.171 – 10.167.244.17110.167.244.171
4510.167.244.172/3210.167.244.172 – 10.167.244.17210.167.244.172
4610.167.244.173/3210.167.244.173 – 10.167.244.17310.167.244.173
4710.167.244.174/3210.167.244.174 – 10.167.244.17410.167.244.174
4810.167.244.175/3210.167.244.175 – 10.167.244.17510.167.244.175
4910.167.244.176/3210.167.244.176 – 10.167.244.17610.167.244.176
5010.167.244.177/3210.167.244.177 – 10.167.244.17710.167.244.177
5110.167.244.178/3210.167.244.178 – 10.167.244.17810.167.244.178
5210.167.244.179/3210.167.244.179 – 10.167.244.17910.167.244.179
5310.167.244.180/3210.167.244.180 – 10.167.244.18010.167.244.180
5410.167.244.181/3210.167.244.181 – 10.167.244.18110.167.244.181
5510.167.244.182/3210.167.244.182 – 10.167.244.18210.167.244.182
5610.167.244.183/3210.167.244.183 – 10.167.244.18310.167.244.183
5710.167.244.184/3210.167.244.184 – 10.167.244.18410.167.244.184
5810.167.244.185/3210.167.244.185 – 10.167.244.18510.167.244.185
5910.167.244.186/3210.167.244.186 – 10.167.244.18610.167.244.186
6010.167.244.187/3210.167.244.187 – 10.167.244.18710.167.244.187
6110.167.244.188/3210.167.244.188 – 10.167.244.18810.167.244.188
6210.167.244.189/3210.167.244.189 – 10.167.244.18910.167.244.189
6310.167.244.190/3210.167.244.190 – 10.167.244.19010.167.244.190
6410.167.244.191/3210.167.244.191 – 10.167.244.19110.167.244.191
6510.167.244.192/3210.167.244.192 – 10.167.244.19210.167.244.192
6610.167.244.193/3210.167.244.193 – 10.167.244.19310.167.244.193
6710.167.244.194/3210.167.244.194 – 10.167.244.19410.167.244.194
6810.167.244.195/3210.167.244.195 – 10.167.244.19510.167.244.195
6910.167.244.196/3210.167.244.196 – 10.167.244.19610.167.244.196
7010.167.244.197/3210.167.244.197 – 10.167.244.19710.167.244.197
7110.167.244.198/3210.167.244.198 – 10.167.244.19810.167.244.198
7210.167.244.199/3210.167.244.199 – 10.167.244.19910.167.244.199
7310.167.244.200/3210.167.244.200 – 10.167.244.20010.167.244.200
7410.167.244.201/3210.167.244.201 – 10.167.244.20110.167.244.201
7510.167.244.202/3210.167.244.202 – 10.167.244.20210.167.244.202
7610.167.244.203/3210.167.244.203 – 10.167.244.20310.167.244.203
7710.167.244.204/3210.167.244.204 – 10.167.244.20410.167.244.204
7810.167.244.205/3210.167.244.205 – 10.167.244.20510.167.244.205
7910.167.244.206/3210.167.244.206 – 10.167.244.20610.167.244.206
8010.167.244.207/3210.167.244.207 – 10.167.244.20710.167.244.207
8110.167.244.208/3210.167.244.208 – 10.167.244.20810.167.244.208
8210.167.244.209/3210.167.244.209 – 10.167.244.20910.167.244.209
8310.167.244.210/3210.167.244.210 – 10.167.244.21010.167.244.210
8410.167.244.211/3210.167.244.211 – 10.167.244.21110.167.244.211
8510.167.244.212/3210.167.244.212 – 10.167.244.21210.167.244.212
8610.167.244.213/3210.167.244.213 – 10.167.244.21310.167.244.213
8710.167.244.214/3210.167.244.214 – 10.167.244.21410.167.244.214
8810.167.244.215/3210.167.244.215 – 10.167.244.21510.167.244.215
8910.167.244.216/3210.167.244.216 – 10.167.244.21610.167.244.216
9010.167.244.217/3210.167.244.217 – 10.167.244.21710.167.244.217
9110.167.244.218/3210.167.244.218 – 10.167.244.21810.167.244.218
9210.167.244.219/3210.167.244.219 – 10.167.244.21910.167.244.219
9310.167.244.220/3210.167.244.220 – 10.167.244.22010.167.244.220
9410.167.244.221/3210.167.244.221 – 10.167.244.22110.167.244.221
9510.167.244.222/3210.167.244.222 – 10.167.244.22210.167.244.222
9610.167.244.223/3210.167.244.223 – 10.167.244.22310.167.244.223
9710.167.244.224/3210.167.244.224 – 10.167.244.22410.167.244.224
9810.167.244.225/3210.167.244.225 – 10.167.244.22510.167.244.225
9910.167.244.226/3210.167.244.226 – 10.167.244.22610.167.244.226
10010.167.244.227/3210.167.244.227 – 10.167.244.22710.167.244.227
10110.167.244.228/3210.167.244.228 – 10.167.244.22810.167.244.228
10210.167.244.229/3210.167.244.229 – 10.167.244.22910.167.244.229
10310.167.244.230/3210.167.244.230 – 10.167.244.23010.167.244.230
10410.167.244.231/3210.167.244.231 – 10.167.244.23110.167.244.231
10510.167.244.232/3210.167.244.232 – 10.167.244.23210.167.244.232
10610.167.244.233/3210.167.244.233 – 10.167.244.23310.167.244.233
10710.167.244.234/3210.167.244.234 – 10.167.244.23410.167.244.234
10810.167.244.235/3210.167.244.235 – 10.167.244.23510.167.244.235
10910.167.244.236/3210.167.244.236 – 10.167.244.23610.167.244.236
11010.167.244.237/3210.167.244.237 – 10.167.244.23710.167.244.237
11110.167.244.238/3210.167.244.238 – 10.167.244.23810.167.244.238
11210.167.244.239/3210.167.244.239 – 10.167.244.23910.167.244.239
11310.167.244.240/3210.167.244.240 – 10.167.244.24010.167.244.240
11410.167.244.241/3210.167.244.241 – 10.167.244.24110.167.244.241
11510.167.244.242/3210.167.244.242 – 10.167.244.24210.167.244.242
11610.167.244.243/3210.167.244.243 – 10.167.244.24310.167.244.243
11710.167.244.244/3210.167.244.244 – 10.167.244.24410.167.244.244
11810.167.244.245/3210.167.244.245 – 10.167.244.24510.167.244.245
11910.167.244.246/3210.167.244.246 – 10.167.244.24610.167.244.246
12010.167.244.247/3210.167.244.247 – 10.167.244.24710.167.244.247
12110.167.244.248/3210.167.244.248 – 10.167.244.24810.167.244.248
12210.167.244.249/3210.167.244.249 – 10.167.244.24910.167.244.249
12310.167.244.250/3210.167.244.250 – 10.167.244.25010.167.244.250
12410.167.244.251/3210.167.244.251 – 10.167.244.25110.167.244.251
12510.167.244.252/3210.167.244.252 – 10.167.244.25210.167.244.252
12610.167.244.253/3210.167.244.253 – 10.167.244.25310.167.244.253
12710.167.244.254/3210.167.244.254 – 10.167.244.25410.167.244.254
12810.167.244.255/3210.167.244.255 – 10.167.244.25510.167.244.255
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 →