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)10.76.83.128/25
network10.76.83.128/25
broadcast10.76.83.255
first host10.76.83.129
last host10.76.83.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.76.83.128/25
address00001010.01001100.01010011.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.01001100.01010011.10000000
broadcast00001010.01001100.01010011.11111111
green = network part, grey = host part
hex0x0a4c5380
decimal172774272
reverse dns128.83.76.10.in-addr.arpa
ipv4-mapped::ffff:a4c:5380

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.76.83.128/3210.76.83.128 – 10.76.83.12810.76.83.128
210.76.83.129/3210.76.83.129 – 10.76.83.12910.76.83.129
310.76.83.130/3210.76.83.130 – 10.76.83.13010.76.83.130
410.76.83.131/3210.76.83.131 – 10.76.83.13110.76.83.131
510.76.83.132/3210.76.83.132 – 10.76.83.13210.76.83.132
610.76.83.133/3210.76.83.133 – 10.76.83.13310.76.83.133
710.76.83.134/3210.76.83.134 – 10.76.83.13410.76.83.134
810.76.83.135/3210.76.83.135 – 10.76.83.13510.76.83.135
910.76.83.136/3210.76.83.136 – 10.76.83.13610.76.83.136
1010.76.83.137/3210.76.83.137 – 10.76.83.13710.76.83.137
1110.76.83.138/3210.76.83.138 – 10.76.83.13810.76.83.138
1210.76.83.139/3210.76.83.139 – 10.76.83.13910.76.83.139
1310.76.83.140/3210.76.83.140 – 10.76.83.14010.76.83.140
1410.76.83.141/3210.76.83.141 – 10.76.83.14110.76.83.141
1510.76.83.142/3210.76.83.142 – 10.76.83.14210.76.83.142
1610.76.83.143/3210.76.83.143 – 10.76.83.14310.76.83.143
1710.76.83.144/3210.76.83.144 – 10.76.83.14410.76.83.144
1810.76.83.145/3210.76.83.145 – 10.76.83.14510.76.83.145
1910.76.83.146/3210.76.83.146 – 10.76.83.14610.76.83.146
2010.76.83.147/3210.76.83.147 – 10.76.83.14710.76.83.147
2110.76.83.148/3210.76.83.148 – 10.76.83.14810.76.83.148
2210.76.83.149/3210.76.83.149 – 10.76.83.14910.76.83.149
2310.76.83.150/3210.76.83.150 – 10.76.83.15010.76.83.150
2410.76.83.151/3210.76.83.151 – 10.76.83.15110.76.83.151
2510.76.83.152/3210.76.83.152 – 10.76.83.15210.76.83.152
2610.76.83.153/3210.76.83.153 – 10.76.83.15310.76.83.153
2710.76.83.154/3210.76.83.154 – 10.76.83.15410.76.83.154
2810.76.83.155/3210.76.83.155 – 10.76.83.15510.76.83.155
2910.76.83.156/3210.76.83.156 – 10.76.83.15610.76.83.156
3010.76.83.157/3210.76.83.157 – 10.76.83.15710.76.83.157
3110.76.83.158/3210.76.83.158 – 10.76.83.15810.76.83.158
3210.76.83.159/3210.76.83.159 – 10.76.83.15910.76.83.159
3310.76.83.160/3210.76.83.160 – 10.76.83.16010.76.83.160
3410.76.83.161/3210.76.83.161 – 10.76.83.16110.76.83.161
3510.76.83.162/3210.76.83.162 – 10.76.83.16210.76.83.162
3610.76.83.163/3210.76.83.163 – 10.76.83.16310.76.83.163
3710.76.83.164/3210.76.83.164 – 10.76.83.16410.76.83.164
3810.76.83.165/3210.76.83.165 – 10.76.83.16510.76.83.165
3910.76.83.166/3210.76.83.166 – 10.76.83.16610.76.83.166
4010.76.83.167/3210.76.83.167 – 10.76.83.16710.76.83.167
4110.76.83.168/3210.76.83.168 – 10.76.83.16810.76.83.168
4210.76.83.169/3210.76.83.169 – 10.76.83.16910.76.83.169
4310.76.83.170/3210.76.83.170 – 10.76.83.17010.76.83.170
4410.76.83.171/3210.76.83.171 – 10.76.83.17110.76.83.171
4510.76.83.172/3210.76.83.172 – 10.76.83.17210.76.83.172
4610.76.83.173/3210.76.83.173 – 10.76.83.17310.76.83.173
4710.76.83.174/3210.76.83.174 – 10.76.83.17410.76.83.174
4810.76.83.175/3210.76.83.175 – 10.76.83.17510.76.83.175
4910.76.83.176/3210.76.83.176 – 10.76.83.17610.76.83.176
5010.76.83.177/3210.76.83.177 – 10.76.83.17710.76.83.177
5110.76.83.178/3210.76.83.178 – 10.76.83.17810.76.83.178
5210.76.83.179/3210.76.83.179 – 10.76.83.17910.76.83.179
5310.76.83.180/3210.76.83.180 – 10.76.83.18010.76.83.180
5410.76.83.181/3210.76.83.181 – 10.76.83.18110.76.83.181
5510.76.83.182/3210.76.83.182 – 10.76.83.18210.76.83.182
5610.76.83.183/3210.76.83.183 – 10.76.83.18310.76.83.183
5710.76.83.184/3210.76.83.184 – 10.76.83.18410.76.83.184
5810.76.83.185/3210.76.83.185 – 10.76.83.18510.76.83.185
5910.76.83.186/3210.76.83.186 – 10.76.83.18610.76.83.186
6010.76.83.187/3210.76.83.187 – 10.76.83.18710.76.83.187
6110.76.83.188/3210.76.83.188 – 10.76.83.18810.76.83.188
6210.76.83.189/3210.76.83.189 – 10.76.83.18910.76.83.189
6310.76.83.190/3210.76.83.190 – 10.76.83.19010.76.83.190
6410.76.83.191/3210.76.83.191 – 10.76.83.19110.76.83.191
6510.76.83.192/3210.76.83.192 – 10.76.83.19210.76.83.192
6610.76.83.193/3210.76.83.193 – 10.76.83.19310.76.83.193
6710.76.83.194/3210.76.83.194 – 10.76.83.19410.76.83.194
6810.76.83.195/3210.76.83.195 – 10.76.83.19510.76.83.195
6910.76.83.196/3210.76.83.196 – 10.76.83.19610.76.83.196
7010.76.83.197/3210.76.83.197 – 10.76.83.19710.76.83.197
7110.76.83.198/3210.76.83.198 – 10.76.83.19810.76.83.198
7210.76.83.199/3210.76.83.199 – 10.76.83.19910.76.83.199
7310.76.83.200/3210.76.83.200 – 10.76.83.20010.76.83.200
7410.76.83.201/3210.76.83.201 – 10.76.83.20110.76.83.201
7510.76.83.202/3210.76.83.202 – 10.76.83.20210.76.83.202
7610.76.83.203/3210.76.83.203 – 10.76.83.20310.76.83.203
7710.76.83.204/3210.76.83.204 – 10.76.83.20410.76.83.204
7810.76.83.205/3210.76.83.205 – 10.76.83.20510.76.83.205
7910.76.83.206/3210.76.83.206 – 10.76.83.20610.76.83.206
8010.76.83.207/3210.76.83.207 – 10.76.83.20710.76.83.207
8110.76.83.208/3210.76.83.208 – 10.76.83.20810.76.83.208
8210.76.83.209/3210.76.83.209 – 10.76.83.20910.76.83.209
8310.76.83.210/3210.76.83.210 – 10.76.83.21010.76.83.210
8410.76.83.211/3210.76.83.211 – 10.76.83.21110.76.83.211
8510.76.83.212/3210.76.83.212 – 10.76.83.21210.76.83.212
8610.76.83.213/3210.76.83.213 – 10.76.83.21310.76.83.213
8710.76.83.214/3210.76.83.214 – 10.76.83.21410.76.83.214
8810.76.83.215/3210.76.83.215 – 10.76.83.21510.76.83.215
8910.76.83.216/3210.76.83.216 – 10.76.83.21610.76.83.216
9010.76.83.217/3210.76.83.217 – 10.76.83.21710.76.83.217
9110.76.83.218/3210.76.83.218 – 10.76.83.21810.76.83.218
9210.76.83.219/3210.76.83.219 – 10.76.83.21910.76.83.219
9310.76.83.220/3210.76.83.220 – 10.76.83.22010.76.83.220
9410.76.83.221/3210.76.83.221 – 10.76.83.22110.76.83.221
9510.76.83.222/3210.76.83.222 – 10.76.83.22210.76.83.222
9610.76.83.223/3210.76.83.223 – 10.76.83.22310.76.83.223
9710.76.83.224/3210.76.83.224 – 10.76.83.22410.76.83.224
9810.76.83.225/3210.76.83.225 – 10.76.83.22510.76.83.225
9910.76.83.226/3210.76.83.226 – 10.76.83.22610.76.83.226
10010.76.83.227/3210.76.83.227 – 10.76.83.22710.76.83.227
10110.76.83.228/3210.76.83.228 – 10.76.83.22810.76.83.228
10210.76.83.229/3210.76.83.229 – 10.76.83.22910.76.83.229
10310.76.83.230/3210.76.83.230 – 10.76.83.23010.76.83.230
10410.76.83.231/3210.76.83.231 – 10.76.83.23110.76.83.231
10510.76.83.232/3210.76.83.232 – 10.76.83.23210.76.83.232
10610.76.83.233/3210.76.83.233 – 10.76.83.23310.76.83.233
10710.76.83.234/3210.76.83.234 – 10.76.83.23410.76.83.234
10810.76.83.235/3210.76.83.235 – 10.76.83.23510.76.83.235
10910.76.83.236/3210.76.83.236 – 10.76.83.23610.76.83.236
11010.76.83.237/3210.76.83.237 – 10.76.83.23710.76.83.237
11110.76.83.238/3210.76.83.238 – 10.76.83.23810.76.83.238
11210.76.83.239/3210.76.83.239 – 10.76.83.23910.76.83.239
11310.76.83.240/3210.76.83.240 – 10.76.83.24010.76.83.240
11410.76.83.241/3210.76.83.241 – 10.76.83.24110.76.83.241
11510.76.83.242/3210.76.83.242 – 10.76.83.24210.76.83.242
11610.76.83.243/3210.76.83.243 – 10.76.83.24310.76.83.243
11710.76.83.244/3210.76.83.244 – 10.76.83.24410.76.83.244
11810.76.83.245/3210.76.83.245 – 10.76.83.24510.76.83.245
11910.76.83.246/3210.76.83.246 – 10.76.83.24610.76.83.246
12010.76.83.247/3210.76.83.247 – 10.76.83.24710.76.83.247
12110.76.83.248/3210.76.83.248 – 10.76.83.24810.76.83.248
12210.76.83.249/3210.76.83.249 – 10.76.83.24910.76.83.249
12310.76.83.250/3210.76.83.250 – 10.76.83.25010.76.83.250
12410.76.83.251/3210.76.83.251 – 10.76.83.25110.76.83.251
12510.76.83.252/3210.76.83.252 – 10.76.83.25210.76.83.252
12610.76.83.253/3210.76.83.253 – 10.76.83.25310.76.83.253
12710.76.83.254/3210.76.83.254 – 10.76.83.25410.76.83.254
12810.76.83.255/3210.76.83.255 – 10.76.83.25510.76.83.255
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 →