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)10.167.248.128/25
network10.167.248.128/25
broadcast10.167.248.255
first host10.167.248.129
last host10.167.248.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.248.128/25
address00001010.10100111.11111000.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.11111000.10000000
broadcast00001010.10100111.11111000.11111111
green = network part, grey = host part
hex0x0aa7f880
decimal178780288
reverse dns128.248.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:f880

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.248.128/3210.167.248.128 – 10.167.248.12810.167.248.128
210.167.248.129/3210.167.248.129 – 10.167.248.12910.167.248.129
310.167.248.130/3210.167.248.130 – 10.167.248.13010.167.248.130
410.167.248.131/3210.167.248.131 – 10.167.248.13110.167.248.131
510.167.248.132/3210.167.248.132 – 10.167.248.13210.167.248.132
610.167.248.133/3210.167.248.133 – 10.167.248.13310.167.248.133
710.167.248.134/3210.167.248.134 – 10.167.248.13410.167.248.134
810.167.248.135/3210.167.248.135 – 10.167.248.13510.167.248.135
910.167.248.136/3210.167.248.136 – 10.167.248.13610.167.248.136
1010.167.248.137/3210.167.248.137 – 10.167.248.13710.167.248.137
1110.167.248.138/3210.167.248.138 – 10.167.248.13810.167.248.138
1210.167.248.139/3210.167.248.139 – 10.167.248.13910.167.248.139
1310.167.248.140/3210.167.248.140 – 10.167.248.14010.167.248.140
1410.167.248.141/3210.167.248.141 – 10.167.248.14110.167.248.141
1510.167.248.142/3210.167.248.142 – 10.167.248.14210.167.248.142
1610.167.248.143/3210.167.248.143 – 10.167.248.14310.167.248.143
1710.167.248.144/3210.167.248.144 – 10.167.248.14410.167.248.144
1810.167.248.145/3210.167.248.145 – 10.167.248.14510.167.248.145
1910.167.248.146/3210.167.248.146 – 10.167.248.14610.167.248.146
2010.167.248.147/3210.167.248.147 – 10.167.248.14710.167.248.147
2110.167.248.148/3210.167.248.148 – 10.167.248.14810.167.248.148
2210.167.248.149/3210.167.248.149 – 10.167.248.14910.167.248.149
2310.167.248.150/3210.167.248.150 – 10.167.248.15010.167.248.150
2410.167.248.151/3210.167.248.151 – 10.167.248.15110.167.248.151
2510.167.248.152/3210.167.248.152 – 10.167.248.15210.167.248.152
2610.167.248.153/3210.167.248.153 – 10.167.248.15310.167.248.153
2710.167.248.154/3210.167.248.154 – 10.167.248.15410.167.248.154
2810.167.248.155/3210.167.248.155 – 10.167.248.15510.167.248.155
2910.167.248.156/3210.167.248.156 – 10.167.248.15610.167.248.156
3010.167.248.157/3210.167.248.157 – 10.167.248.15710.167.248.157
3110.167.248.158/3210.167.248.158 – 10.167.248.15810.167.248.158
3210.167.248.159/3210.167.248.159 – 10.167.248.15910.167.248.159
3310.167.248.160/3210.167.248.160 – 10.167.248.16010.167.248.160
3410.167.248.161/3210.167.248.161 – 10.167.248.16110.167.248.161
3510.167.248.162/3210.167.248.162 – 10.167.248.16210.167.248.162
3610.167.248.163/3210.167.248.163 – 10.167.248.16310.167.248.163
3710.167.248.164/3210.167.248.164 – 10.167.248.16410.167.248.164
3810.167.248.165/3210.167.248.165 – 10.167.248.16510.167.248.165
3910.167.248.166/3210.167.248.166 – 10.167.248.16610.167.248.166
4010.167.248.167/3210.167.248.167 – 10.167.248.16710.167.248.167
4110.167.248.168/3210.167.248.168 – 10.167.248.16810.167.248.168
4210.167.248.169/3210.167.248.169 – 10.167.248.16910.167.248.169
4310.167.248.170/3210.167.248.170 – 10.167.248.17010.167.248.170
4410.167.248.171/3210.167.248.171 – 10.167.248.17110.167.248.171
4510.167.248.172/3210.167.248.172 – 10.167.248.17210.167.248.172
4610.167.248.173/3210.167.248.173 – 10.167.248.17310.167.248.173
4710.167.248.174/3210.167.248.174 – 10.167.248.17410.167.248.174
4810.167.248.175/3210.167.248.175 – 10.167.248.17510.167.248.175
4910.167.248.176/3210.167.248.176 – 10.167.248.17610.167.248.176
5010.167.248.177/3210.167.248.177 – 10.167.248.17710.167.248.177
5110.167.248.178/3210.167.248.178 – 10.167.248.17810.167.248.178
5210.167.248.179/3210.167.248.179 – 10.167.248.17910.167.248.179
5310.167.248.180/3210.167.248.180 – 10.167.248.18010.167.248.180
5410.167.248.181/3210.167.248.181 – 10.167.248.18110.167.248.181
5510.167.248.182/3210.167.248.182 – 10.167.248.18210.167.248.182
5610.167.248.183/3210.167.248.183 – 10.167.248.18310.167.248.183
5710.167.248.184/3210.167.248.184 – 10.167.248.18410.167.248.184
5810.167.248.185/3210.167.248.185 – 10.167.248.18510.167.248.185
5910.167.248.186/3210.167.248.186 – 10.167.248.18610.167.248.186
6010.167.248.187/3210.167.248.187 – 10.167.248.18710.167.248.187
6110.167.248.188/3210.167.248.188 – 10.167.248.18810.167.248.188
6210.167.248.189/3210.167.248.189 – 10.167.248.18910.167.248.189
6310.167.248.190/3210.167.248.190 – 10.167.248.19010.167.248.190
6410.167.248.191/3210.167.248.191 – 10.167.248.19110.167.248.191
6510.167.248.192/3210.167.248.192 – 10.167.248.19210.167.248.192
6610.167.248.193/3210.167.248.193 – 10.167.248.19310.167.248.193
6710.167.248.194/3210.167.248.194 – 10.167.248.19410.167.248.194
6810.167.248.195/3210.167.248.195 – 10.167.248.19510.167.248.195
6910.167.248.196/3210.167.248.196 – 10.167.248.19610.167.248.196
7010.167.248.197/3210.167.248.197 – 10.167.248.19710.167.248.197
7110.167.248.198/3210.167.248.198 – 10.167.248.19810.167.248.198
7210.167.248.199/3210.167.248.199 – 10.167.248.19910.167.248.199
7310.167.248.200/3210.167.248.200 – 10.167.248.20010.167.248.200
7410.167.248.201/3210.167.248.201 – 10.167.248.20110.167.248.201
7510.167.248.202/3210.167.248.202 – 10.167.248.20210.167.248.202
7610.167.248.203/3210.167.248.203 – 10.167.248.20310.167.248.203
7710.167.248.204/3210.167.248.204 – 10.167.248.20410.167.248.204
7810.167.248.205/3210.167.248.205 – 10.167.248.20510.167.248.205
7910.167.248.206/3210.167.248.206 – 10.167.248.20610.167.248.206
8010.167.248.207/3210.167.248.207 – 10.167.248.20710.167.248.207
8110.167.248.208/3210.167.248.208 – 10.167.248.20810.167.248.208
8210.167.248.209/3210.167.248.209 – 10.167.248.20910.167.248.209
8310.167.248.210/3210.167.248.210 – 10.167.248.21010.167.248.210
8410.167.248.211/3210.167.248.211 – 10.167.248.21110.167.248.211
8510.167.248.212/3210.167.248.212 – 10.167.248.21210.167.248.212
8610.167.248.213/3210.167.248.213 – 10.167.248.21310.167.248.213
8710.167.248.214/3210.167.248.214 – 10.167.248.21410.167.248.214
8810.167.248.215/3210.167.248.215 – 10.167.248.21510.167.248.215
8910.167.248.216/3210.167.248.216 – 10.167.248.21610.167.248.216
9010.167.248.217/3210.167.248.217 – 10.167.248.21710.167.248.217
9110.167.248.218/3210.167.248.218 – 10.167.248.21810.167.248.218
9210.167.248.219/3210.167.248.219 – 10.167.248.21910.167.248.219
9310.167.248.220/3210.167.248.220 – 10.167.248.22010.167.248.220
9410.167.248.221/3210.167.248.221 – 10.167.248.22110.167.248.221
9510.167.248.222/3210.167.248.222 – 10.167.248.22210.167.248.222
9610.167.248.223/3210.167.248.223 – 10.167.248.22310.167.248.223
9710.167.248.224/3210.167.248.224 – 10.167.248.22410.167.248.224
9810.167.248.225/3210.167.248.225 – 10.167.248.22510.167.248.225
9910.167.248.226/3210.167.248.226 – 10.167.248.22610.167.248.226
10010.167.248.227/3210.167.248.227 – 10.167.248.22710.167.248.227
10110.167.248.228/3210.167.248.228 – 10.167.248.22810.167.248.228
10210.167.248.229/3210.167.248.229 – 10.167.248.22910.167.248.229
10310.167.248.230/3210.167.248.230 – 10.167.248.23010.167.248.230
10410.167.248.231/3210.167.248.231 – 10.167.248.23110.167.248.231
10510.167.248.232/3210.167.248.232 – 10.167.248.23210.167.248.232
10610.167.248.233/3210.167.248.233 – 10.167.248.23310.167.248.233
10710.167.248.234/3210.167.248.234 – 10.167.248.23410.167.248.234
10810.167.248.235/3210.167.248.235 – 10.167.248.23510.167.248.235
10910.167.248.236/3210.167.248.236 – 10.167.248.23610.167.248.236
11010.167.248.237/3210.167.248.237 – 10.167.248.23710.167.248.237
11110.167.248.238/3210.167.248.238 – 10.167.248.23810.167.248.238
11210.167.248.239/3210.167.248.239 – 10.167.248.23910.167.248.239
11310.167.248.240/3210.167.248.240 – 10.167.248.24010.167.248.240
11410.167.248.241/3210.167.248.241 – 10.167.248.24110.167.248.241
11510.167.248.242/3210.167.248.242 – 10.167.248.24210.167.248.242
11610.167.248.243/3210.167.248.243 – 10.167.248.24310.167.248.243
11710.167.248.244/3210.167.248.244 – 10.167.248.24410.167.248.244
11810.167.248.245/3210.167.248.245 – 10.167.248.24510.167.248.245
11910.167.248.246/3210.167.248.246 – 10.167.248.24610.167.248.246
12010.167.248.247/3210.167.248.247 – 10.167.248.24710.167.248.247
12110.167.248.248/3210.167.248.248 – 10.167.248.24810.167.248.248
12210.167.248.249/3210.167.248.249 – 10.167.248.24910.167.248.249
12310.167.248.250/3210.167.248.250 – 10.167.248.25010.167.248.250
12410.167.248.251/3210.167.248.251 – 10.167.248.25110.167.248.251
12510.167.248.252/3210.167.248.252 – 10.167.248.25210.167.248.252
12610.167.248.253/3210.167.248.253 – 10.167.248.25310.167.248.253
12710.167.248.254/3210.167.248.254 – 10.167.248.25410.167.248.254
12810.167.248.255/3210.167.248.255 – 10.167.248.25510.167.248.255
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 →