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)10.167.126.128/25
network10.167.126.128/25
broadcast10.167.126.255
first host10.167.126.129
last host10.167.126.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.126.128/25
address00001010.10100111.01111110.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.01111110.10000000
broadcast00001010.10100111.01111110.11111111
green = network part, grey = host part
hex0x0aa77e80
decimal178749056
reverse dns128.126.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:7e80

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.126.128/3210.167.126.128 – 10.167.126.12810.167.126.128
210.167.126.129/3210.167.126.129 – 10.167.126.12910.167.126.129
310.167.126.130/3210.167.126.130 – 10.167.126.13010.167.126.130
410.167.126.131/3210.167.126.131 – 10.167.126.13110.167.126.131
510.167.126.132/3210.167.126.132 – 10.167.126.13210.167.126.132
610.167.126.133/3210.167.126.133 – 10.167.126.13310.167.126.133
710.167.126.134/3210.167.126.134 – 10.167.126.13410.167.126.134
810.167.126.135/3210.167.126.135 – 10.167.126.13510.167.126.135
910.167.126.136/3210.167.126.136 – 10.167.126.13610.167.126.136
1010.167.126.137/3210.167.126.137 – 10.167.126.13710.167.126.137
1110.167.126.138/3210.167.126.138 – 10.167.126.13810.167.126.138
1210.167.126.139/3210.167.126.139 – 10.167.126.13910.167.126.139
1310.167.126.140/3210.167.126.140 – 10.167.126.14010.167.126.140
1410.167.126.141/3210.167.126.141 – 10.167.126.14110.167.126.141
1510.167.126.142/3210.167.126.142 – 10.167.126.14210.167.126.142
1610.167.126.143/3210.167.126.143 – 10.167.126.14310.167.126.143
1710.167.126.144/3210.167.126.144 – 10.167.126.14410.167.126.144
1810.167.126.145/3210.167.126.145 – 10.167.126.14510.167.126.145
1910.167.126.146/3210.167.126.146 – 10.167.126.14610.167.126.146
2010.167.126.147/3210.167.126.147 – 10.167.126.14710.167.126.147
2110.167.126.148/3210.167.126.148 – 10.167.126.14810.167.126.148
2210.167.126.149/3210.167.126.149 – 10.167.126.14910.167.126.149
2310.167.126.150/3210.167.126.150 – 10.167.126.15010.167.126.150
2410.167.126.151/3210.167.126.151 – 10.167.126.15110.167.126.151
2510.167.126.152/3210.167.126.152 – 10.167.126.15210.167.126.152
2610.167.126.153/3210.167.126.153 – 10.167.126.15310.167.126.153
2710.167.126.154/3210.167.126.154 – 10.167.126.15410.167.126.154
2810.167.126.155/3210.167.126.155 – 10.167.126.15510.167.126.155
2910.167.126.156/3210.167.126.156 – 10.167.126.15610.167.126.156
3010.167.126.157/3210.167.126.157 – 10.167.126.15710.167.126.157
3110.167.126.158/3210.167.126.158 – 10.167.126.15810.167.126.158
3210.167.126.159/3210.167.126.159 – 10.167.126.15910.167.126.159
3310.167.126.160/3210.167.126.160 – 10.167.126.16010.167.126.160
3410.167.126.161/3210.167.126.161 – 10.167.126.16110.167.126.161
3510.167.126.162/3210.167.126.162 – 10.167.126.16210.167.126.162
3610.167.126.163/3210.167.126.163 – 10.167.126.16310.167.126.163
3710.167.126.164/3210.167.126.164 – 10.167.126.16410.167.126.164
3810.167.126.165/3210.167.126.165 – 10.167.126.16510.167.126.165
3910.167.126.166/3210.167.126.166 – 10.167.126.16610.167.126.166
4010.167.126.167/3210.167.126.167 – 10.167.126.16710.167.126.167
4110.167.126.168/3210.167.126.168 – 10.167.126.16810.167.126.168
4210.167.126.169/3210.167.126.169 – 10.167.126.16910.167.126.169
4310.167.126.170/3210.167.126.170 – 10.167.126.17010.167.126.170
4410.167.126.171/3210.167.126.171 – 10.167.126.17110.167.126.171
4510.167.126.172/3210.167.126.172 – 10.167.126.17210.167.126.172
4610.167.126.173/3210.167.126.173 – 10.167.126.17310.167.126.173
4710.167.126.174/3210.167.126.174 – 10.167.126.17410.167.126.174
4810.167.126.175/3210.167.126.175 – 10.167.126.17510.167.126.175
4910.167.126.176/3210.167.126.176 – 10.167.126.17610.167.126.176
5010.167.126.177/3210.167.126.177 – 10.167.126.17710.167.126.177
5110.167.126.178/3210.167.126.178 – 10.167.126.17810.167.126.178
5210.167.126.179/3210.167.126.179 – 10.167.126.17910.167.126.179
5310.167.126.180/3210.167.126.180 – 10.167.126.18010.167.126.180
5410.167.126.181/3210.167.126.181 – 10.167.126.18110.167.126.181
5510.167.126.182/3210.167.126.182 – 10.167.126.18210.167.126.182
5610.167.126.183/3210.167.126.183 – 10.167.126.18310.167.126.183
5710.167.126.184/3210.167.126.184 – 10.167.126.18410.167.126.184
5810.167.126.185/3210.167.126.185 – 10.167.126.18510.167.126.185
5910.167.126.186/3210.167.126.186 – 10.167.126.18610.167.126.186
6010.167.126.187/3210.167.126.187 – 10.167.126.18710.167.126.187
6110.167.126.188/3210.167.126.188 – 10.167.126.18810.167.126.188
6210.167.126.189/3210.167.126.189 – 10.167.126.18910.167.126.189
6310.167.126.190/3210.167.126.190 – 10.167.126.19010.167.126.190
6410.167.126.191/3210.167.126.191 – 10.167.126.19110.167.126.191
6510.167.126.192/3210.167.126.192 – 10.167.126.19210.167.126.192
6610.167.126.193/3210.167.126.193 – 10.167.126.19310.167.126.193
6710.167.126.194/3210.167.126.194 – 10.167.126.19410.167.126.194
6810.167.126.195/3210.167.126.195 – 10.167.126.19510.167.126.195
6910.167.126.196/3210.167.126.196 – 10.167.126.19610.167.126.196
7010.167.126.197/3210.167.126.197 – 10.167.126.19710.167.126.197
7110.167.126.198/3210.167.126.198 – 10.167.126.19810.167.126.198
7210.167.126.199/3210.167.126.199 – 10.167.126.19910.167.126.199
7310.167.126.200/3210.167.126.200 – 10.167.126.20010.167.126.200
7410.167.126.201/3210.167.126.201 – 10.167.126.20110.167.126.201
7510.167.126.202/3210.167.126.202 – 10.167.126.20210.167.126.202
7610.167.126.203/3210.167.126.203 – 10.167.126.20310.167.126.203
7710.167.126.204/3210.167.126.204 – 10.167.126.20410.167.126.204
7810.167.126.205/3210.167.126.205 – 10.167.126.20510.167.126.205
7910.167.126.206/3210.167.126.206 – 10.167.126.20610.167.126.206
8010.167.126.207/3210.167.126.207 – 10.167.126.20710.167.126.207
8110.167.126.208/3210.167.126.208 – 10.167.126.20810.167.126.208
8210.167.126.209/3210.167.126.209 – 10.167.126.20910.167.126.209
8310.167.126.210/3210.167.126.210 – 10.167.126.21010.167.126.210
8410.167.126.211/3210.167.126.211 – 10.167.126.21110.167.126.211
8510.167.126.212/3210.167.126.212 – 10.167.126.21210.167.126.212
8610.167.126.213/3210.167.126.213 – 10.167.126.21310.167.126.213
8710.167.126.214/3210.167.126.214 – 10.167.126.21410.167.126.214
8810.167.126.215/3210.167.126.215 – 10.167.126.21510.167.126.215
8910.167.126.216/3210.167.126.216 – 10.167.126.21610.167.126.216
9010.167.126.217/3210.167.126.217 – 10.167.126.21710.167.126.217
9110.167.126.218/3210.167.126.218 – 10.167.126.21810.167.126.218
9210.167.126.219/3210.167.126.219 – 10.167.126.21910.167.126.219
9310.167.126.220/3210.167.126.220 – 10.167.126.22010.167.126.220
9410.167.126.221/3210.167.126.221 – 10.167.126.22110.167.126.221
9510.167.126.222/3210.167.126.222 – 10.167.126.22210.167.126.222
9610.167.126.223/3210.167.126.223 – 10.167.126.22310.167.126.223
9710.167.126.224/3210.167.126.224 – 10.167.126.22410.167.126.224
9810.167.126.225/3210.167.126.225 – 10.167.126.22510.167.126.225
9910.167.126.226/3210.167.126.226 – 10.167.126.22610.167.126.226
10010.167.126.227/3210.167.126.227 – 10.167.126.22710.167.126.227
10110.167.126.228/3210.167.126.228 – 10.167.126.22810.167.126.228
10210.167.126.229/3210.167.126.229 – 10.167.126.22910.167.126.229
10310.167.126.230/3210.167.126.230 – 10.167.126.23010.167.126.230
10410.167.126.231/3210.167.126.231 – 10.167.126.23110.167.126.231
10510.167.126.232/3210.167.126.232 – 10.167.126.23210.167.126.232
10610.167.126.233/3210.167.126.233 – 10.167.126.23310.167.126.233
10710.167.126.234/3210.167.126.234 – 10.167.126.23410.167.126.234
10810.167.126.235/3210.167.126.235 – 10.167.126.23510.167.126.235
10910.167.126.236/3210.167.126.236 – 10.167.126.23610.167.126.236
11010.167.126.237/3210.167.126.237 – 10.167.126.23710.167.126.237
11110.167.126.238/3210.167.126.238 – 10.167.126.23810.167.126.238
11210.167.126.239/3210.167.126.239 – 10.167.126.23910.167.126.239
11310.167.126.240/3210.167.126.240 – 10.167.126.24010.167.126.240
11410.167.126.241/3210.167.126.241 – 10.167.126.24110.167.126.241
11510.167.126.242/3210.167.126.242 – 10.167.126.24210.167.126.242
11610.167.126.243/3210.167.126.243 – 10.167.126.24310.167.126.243
11710.167.126.244/3210.167.126.244 – 10.167.126.24410.167.126.244
11810.167.126.245/3210.167.126.245 – 10.167.126.24510.167.126.245
11910.167.126.246/3210.167.126.246 – 10.167.126.24610.167.126.246
12010.167.126.247/3210.167.126.247 – 10.167.126.24710.167.126.247
12110.167.126.248/3210.167.126.248 – 10.167.126.24810.167.126.248
12210.167.126.249/3210.167.126.249 – 10.167.126.24910.167.126.249
12310.167.126.250/3210.167.126.250 – 10.167.126.25010.167.126.250
12410.167.126.251/3210.167.126.251 – 10.167.126.25110.167.126.251
12510.167.126.252/3210.167.126.252 – 10.167.126.25210.167.126.252
12610.167.126.253/3210.167.126.253 – 10.167.126.25310.167.126.253
12710.167.126.254/3210.167.126.254 – 10.167.126.25410.167.126.254
12810.167.126.255/3210.167.126.255 – 10.167.126.25510.167.126.255
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 →