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)10.78.46.128/25
network10.78.46.128/25
broadcast10.78.46.255
first host10.78.46.129
last host10.78.46.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.78.46.128/25
address00001010.01001110.00101110.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.01001110.00101110.10000000
broadcast00001010.01001110.00101110.11111111
green = network part, grey = host part
hex0x0a4e2e80
decimal172895872
reverse dns128.46.78.10.in-addr.arpa
ipv4-mapped::ffff:a4e:2e80

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.78.46.128/3210.78.46.128 – 10.78.46.12810.78.46.128
210.78.46.129/3210.78.46.129 – 10.78.46.12910.78.46.129
310.78.46.130/3210.78.46.130 – 10.78.46.13010.78.46.130
410.78.46.131/3210.78.46.131 – 10.78.46.13110.78.46.131
510.78.46.132/3210.78.46.132 – 10.78.46.13210.78.46.132
610.78.46.133/3210.78.46.133 – 10.78.46.13310.78.46.133
710.78.46.134/3210.78.46.134 – 10.78.46.13410.78.46.134
810.78.46.135/3210.78.46.135 – 10.78.46.13510.78.46.135
910.78.46.136/3210.78.46.136 – 10.78.46.13610.78.46.136
1010.78.46.137/3210.78.46.137 – 10.78.46.13710.78.46.137
1110.78.46.138/3210.78.46.138 – 10.78.46.13810.78.46.138
1210.78.46.139/3210.78.46.139 – 10.78.46.13910.78.46.139
1310.78.46.140/3210.78.46.140 – 10.78.46.14010.78.46.140
1410.78.46.141/3210.78.46.141 – 10.78.46.14110.78.46.141
1510.78.46.142/3210.78.46.142 – 10.78.46.14210.78.46.142
1610.78.46.143/3210.78.46.143 – 10.78.46.14310.78.46.143
1710.78.46.144/3210.78.46.144 – 10.78.46.14410.78.46.144
1810.78.46.145/3210.78.46.145 – 10.78.46.14510.78.46.145
1910.78.46.146/3210.78.46.146 – 10.78.46.14610.78.46.146
2010.78.46.147/3210.78.46.147 – 10.78.46.14710.78.46.147
2110.78.46.148/3210.78.46.148 – 10.78.46.14810.78.46.148
2210.78.46.149/3210.78.46.149 – 10.78.46.14910.78.46.149
2310.78.46.150/3210.78.46.150 – 10.78.46.15010.78.46.150
2410.78.46.151/3210.78.46.151 – 10.78.46.15110.78.46.151
2510.78.46.152/3210.78.46.152 – 10.78.46.15210.78.46.152
2610.78.46.153/3210.78.46.153 – 10.78.46.15310.78.46.153
2710.78.46.154/3210.78.46.154 – 10.78.46.15410.78.46.154
2810.78.46.155/3210.78.46.155 – 10.78.46.15510.78.46.155
2910.78.46.156/3210.78.46.156 – 10.78.46.15610.78.46.156
3010.78.46.157/3210.78.46.157 – 10.78.46.15710.78.46.157
3110.78.46.158/3210.78.46.158 – 10.78.46.15810.78.46.158
3210.78.46.159/3210.78.46.159 – 10.78.46.15910.78.46.159
3310.78.46.160/3210.78.46.160 – 10.78.46.16010.78.46.160
3410.78.46.161/3210.78.46.161 – 10.78.46.16110.78.46.161
3510.78.46.162/3210.78.46.162 – 10.78.46.16210.78.46.162
3610.78.46.163/3210.78.46.163 – 10.78.46.16310.78.46.163
3710.78.46.164/3210.78.46.164 – 10.78.46.16410.78.46.164
3810.78.46.165/3210.78.46.165 – 10.78.46.16510.78.46.165
3910.78.46.166/3210.78.46.166 – 10.78.46.16610.78.46.166
4010.78.46.167/3210.78.46.167 – 10.78.46.16710.78.46.167
4110.78.46.168/3210.78.46.168 – 10.78.46.16810.78.46.168
4210.78.46.169/3210.78.46.169 – 10.78.46.16910.78.46.169
4310.78.46.170/3210.78.46.170 – 10.78.46.17010.78.46.170
4410.78.46.171/3210.78.46.171 – 10.78.46.17110.78.46.171
4510.78.46.172/3210.78.46.172 – 10.78.46.17210.78.46.172
4610.78.46.173/3210.78.46.173 – 10.78.46.17310.78.46.173
4710.78.46.174/3210.78.46.174 – 10.78.46.17410.78.46.174
4810.78.46.175/3210.78.46.175 – 10.78.46.17510.78.46.175
4910.78.46.176/3210.78.46.176 – 10.78.46.17610.78.46.176
5010.78.46.177/3210.78.46.177 – 10.78.46.17710.78.46.177
5110.78.46.178/3210.78.46.178 – 10.78.46.17810.78.46.178
5210.78.46.179/3210.78.46.179 – 10.78.46.17910.78.46.179
5310.78.46.180/3210.78.46.180 – 10.78.46.18010.78.46.180
5410.78.46.181/3210.78.46.181 – 10.78.46.18110.78.46.181
5510.78.46.182/3210.78.46.182 – 10.78.46.18210.78.46.182
5610.78.46.183/3210.78.46.183 – 10.78.46.18310.78.46.183
5710.78.46.184/3210.78.46.184 – 10.78.46.18410.78.46.184
5810.78.46.185/3210.78.46.185 – 10.78.46.18510.78.46.185
5910.78.46.186/3210.78.46.186 – 10.78.46.18610.78.46.186
6010.78.46.187/3210.78.46.187 – 10.78.46.18710.78.46.187
6110.78.46.188/3210.78.46.188 – 10.78.46.18810.78.46.188
6210.78.46.189/3210.78.46.189 – 10.78.46.18910.78.46.189
6310.78.46.190/3210.78.46.190 – 10.78.46.19010.78.46.190
6410.78.46.191/3210.78.46.191 – 10.78.46.19110.78.46.191
6510.78.46.192/3210.78.46.192 – 10.78.46.19210.78.46.192
6610.78.46.193/3210.78.46.193 – 10.78.46.19310.78.46.193
6710.78.46.194/3210.78.46.194 – 10.78.46.19410.78.46.194
6810.78.46.195/3210.78.46.195 – 10.78.46.19510.78.46.195
6910.78.46.196/3210.78.46.196 – 10.78.46.19610.78.46.196
7010.78.46.197/3210.78.46.197 – 10.78.46.19710.78.46.197
7110.78.46.198/3210.78.46.198 – 10.78.46.19810.78.46.198
7210.78.46.199/3210.78.46.199 – 10.78.46.19910.78.46.199
7310.78.46.200/3210.78.46.200 – 10.78.46.20010.78.46.200
7410.78.46.201/3210.78.46.201 – 10.78.46.20110.78.46.201
7510.78.46.202/3210.78.46.202 – 10.78.46.20210.78.46.202
7610.78.46.203/3210.78.46.203 – 10.78.46.20310.78.46.203
7710.78.46.204/3210.78.46.204 – 10.78.46.20410.78.46.204
7810.78.46.205/3210.78.46.205 – 10.78.46.20510.78.46.205
7910.78.46.206/3210.78.46.206 – 10.78.46.20610.78.46.206
8010.78.46.207/3210.78.46.207 – 10.78.46.20710.78.46.207
8110.78.46.208/3210.78.46.208 – 10.78.46.20810.78.46.208
8210.78.46.209/3210.78.46.209 – 10.78.46.20910.78.46.209
8310.78.46.210/3210.78.46.210 – 10.78.46.21010.78.46.210
8410.78.46.211/3210.78.46.211 – 10.78.46.21110.78.46.211
8510.78.46.212/3210.78.46.212 – 10.78.46.21210.78.46.212
8610.78.46.213/3210.78.46.213 – 10.78.46.21310.78.46.213
8710.78.46.214/3210.78.46.214 – 10.78.46.21410.78.46.214
8810.78.46.215/3210.78.46.215 – 10.78.46.21510.78.46.215
8910.78.46.216/3210.78.46.216 – 10.78.46.21610.78.46.216
9010.78.46.217/3210.78.46.217 – 10.78.46.21710.78.46.217
9110.78.46.218/3210.78.46.218 – 10.78.46.21810.78.46.218
9210.78.46.219/3210.78.46.219 – 10.78.46.21910.78.46.219
9310.78.46.220/3210.78.46.220 – 10.78.46.22010.78.46.220
9410.78.46.221/3210.78.46.221 – 10.78.46.22110.78.46.221
9510.78.46.222/3210.78.46.222 – 10.78.46.22210.78.46.222
9610.78.46.223/3210.78.46.223 – 10.78.46.22310.78.46.223
9710.78.46.224/3210.78.46.224 – 10.78.46.22410.78.46.224
9810.78.46.225/3210.78.46.225 – 10.78.46.22510.78.46.225
9910.78.46.226/3210.78.46.226 – 10.78.46.22610.78.46.226
10010.78.46.227/3210.78.46.227 – 10.78.46.22710.78.46.227
10110.78.46.228/3210.78.46.228 – 10.78.46.22810.78.46.228
10210.78.46.229/3210.78.46.229 – 10.78.46.22910.78.46.229
10310.78.46.230/3210.78.46.230 – 10.78.46.23010.78.46.230
10410.78.46.231/3210.78.46.231 – 10.78.46.23110.78.46.231
10510.78.46.232/3210.78.46.232 – 10.78.46.23210.78.46.232
10610.78.46.233/3210.78.46.233 – 10.78.46.23310.78.46.233
10710.78.46.234/3210.78.46.234 – 10.78.46.23410.78.46.234
10810.78.46.235/3210.78.46.235 – 10.78.46.23510.78.46.235
10910.78.46.236/3210.78.46.236 – 10.78.46.23610.78.46.236
11010.78.46.237/3210.78.46.237 – 10.78.46.23710.78.46.237
11110.78.46.238/3210.78.46.238 – 10.78.46.23810.78.46.238
11210.78.46.239/3210.78.46.239 – 10.78.46.23910.78.46.239
11310.78.46.240/3210.78.46.240 – 10.78.46.24010.78.46.240
11410.78.46.241/3210.78.46.241 – 10.78.46.24110.78.46.241
11510.78.46.242/3210.78.46.242 – 10.78.46.24210.78.46.242
11610.78.46.243/3210.78.46.243 – 10.78.46.24310.78.46.243
11710.78.46.244/3210.78.46.244 – 10.78.46.24410.78.46.244
11810.78.46.245/3210.78.46.245 – 10.78.46.24510.78.46.245
11910.78.46.246/3210.78.46.246 – 10.78.46.24610.78.46.246
12010.78.46.247/3210.78.46.247 – 10.78.46.24710.78.46.247
12110.78.46.248/3210.78.46.248 – 10.78.46.24810.78.46.248
12210.78.46.249/3210.78.46.249 – 10.78.46.24910.78.46.249
12310.78.46.250/3210.78.46.250 – 10.78.46.25010.78.46.250
12410.78.46.251/3210.78.46.251 – 10.78.46.25110.78.46.251
12510.78.46.252/3210.78.46.252 – 10.78.46.25210.78.46.252
12610.78.46.253/3210.78.46.253 – 10.78.46.25310.78.46.253
12710.78.46.254/3210.78.46.254 – 10.78.46.25410.78.46.254
12810.78.46.255/3210.78.46.255 – 10.78.46.25510.78.46.255
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 →