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)10.2.196.128/25
network10.2.196.128/25
broadcast10.2.196.255
first host10.2.196.129
last host10.2.196.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.2.196.128/25
address00001010.00000010.11000100.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.00000010.11000100.10000000
broadcast00001010.00000010.11000100.11111111
green = network part, grey = host part
hex0x0a02c480
decimal167953536
reverse dns128.196.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:c480

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.2.196.128/3210.2.196.128 – 10.2.196.12810.2.196.128
210.2.196.129/3210.2.196.129 – 10.2.196.12910.2.196.129
310.2.196.130/3210.2.196.130 – 10.2.196.13010.2.196.130
410.2.196.131/3210.2.196.131 – 10.2.196.13110.2.196.131
510.2.196.132/3210.2.196.132 – 10.2.196.13210.2.196.132
610.2.196.133/3210.2.196.133 – 10.2.196.13310.2.196.133
710.2.196.134/3210.2.196.134 – 10.2.196.13410.2.196.134
810.2.196.135/3210.2.196.135 – 10.2.196.13510.2.196.135
910.2.196.136/3210.2.196.136 – 10.2.196.13610.2.196.136
1010.2.196.137/3210.2.196.137 – 10.2.196.13710.2.196.137
1110.2.196.138/3210.2.196.138 – 10.2.196.13810.2.196.138
1210.2.196.139/3210.2.196.139 – 10.2.196.13910.2.196.139
1310.2.196.140/3210.2.196.140 – 10.2.196.14010.2.196.140
1410.2.196.141/3210.2.196.141 – 10.2.196.14110.2.196.141
1510.2.196.142/3210.2.196.142 – 10.2.196.14210.2.196.142
1610.2.196.143/3210.2.196.143 – 10.2.196.14310.2.196.143
1710.2.196.144/3210.2.196.144 – 10.2.196.14410.2.196.144
1810.2.196.145/3210.2.196.145 – 10.2.196.14510.2.196.145
1910.2.196.146/3210.2.196.146 – 10.2.196.14610.2.196.146
2010.2.196.147/3210.2.196.147 – 10.2.196.14710.2.196.147
2110.2.196.148/3210.2.196.148 – 10.2.196.14810.2.196.148
2210.2.196.149/3210.2.196.149 – 10.2.196.14910.2.196.149
2310.2.196.150/3210.2.196.150 – 10.2.196.15010.2.196.150
2410.2.196.151/3210.2.196.151 – 10.2.196.15110.2.196.151
2510.2.196.152/3210.2.196.152 – 10.2.196.15210.2.196.152
2610.2.196.153/3210.2.196.153 – 10.2.196.15310.2.196.153
2710.2.196.154/3210.2.196.154 – 10.2.196.15410.2.196.154
2810.2.196.155/3210.2.196.155 – 10.2.196.15510.2.196.155
2910.2.196.156/3210.2.196.156 – 10.2.196.15610.2.196.156
3010.2.196.157/3210.2.196.157 – 10.2.196.15710.2.196.157
3110.2.196.158/3210.2.196.158 – 10.2.196.15810.2.196.158
3210.2.196.159/3210.2.196.159 – 10.2.196.15910.2.196.159
3310.2.196.160/3210.2.196.160 – 10.2.196.16010.2.196.160
3410.2.196.161/3210.2.196.161 – 10.2.196.16110.2.196.161
3510.2.196.162/3210.2.196.162 – 10.2.196.16210.2.196.162
3610.2.196.163/3210.2.196.163 – 10.2.196.16310.2.196.163
3710.2.196.164/3210.2.196.164 – 10.2.196.16410.2.196.164
3810.2.196.165/3210.2.196.165 – 10.2.196.16510.2.196.165
3910.2.196.166/3210.2.196.166 – 10.2.196.16610.2.196.166
4010.2.196.167/3210.2.196.167 – 10.2.196.16710.2.196.167
4110.2.196.168/3210.2.196.168 – 10.2.196.16810.2.196.168
4210.2.196.169/3210.2.196.169 – 10.2.196.16910.2.196.169
4310.2.196.170/3210.2.196.170 – 10.2.196.17010.2.196.170
4410.2.196.171/3210.2.196.171 – 10.2.196.17110.2.196.171
4510.2.196.172/3210.2.196.172 – 10.2.196.17210.2.196.172
4610.2.196.173/3210.2.196.173 – 10.2.196.17310.2.196.173
4710.2.196.174/3210.2.196.174 – 10.2.196.17410.2.196.174
4810.2.196.175/3210.2.196.175 – 10.2.196.17510.2.196.175
4910.2.196.176/3210.2.196.176 – 10.2.196.17610.2.196.176
5010.2.196.177/3210.2.196.177 – 10.2.196.17710.2.196.177
5110.2.196.178/3210.2.196.178 – 10.2.196.17810.2.196.178
5210.2.196.179/3210.2.196.179 – 10.2.196.17910.2.196.179
5310.2.196.180/3210.2.196.180 – 10.2.196.18010.2.196.180
5410.2.196.181/3210.2.196.181 – 10.2.196.18110.2.196.181
5510.2.196.182/3210.2.196.182 – 10.2.196.18210.2.196.182
5610.2.196.183/3210.2.196.183 – 10.2.196.18310.2.196.183
5710.2.196.184/3210.2.196.184 – 10.2.196.18410.2.196.184
5810.2.196.185/3210.2.196.185 – 10.2.196.18510.2.196.185
5910.2.196.186/3210.2.196.186 – 10.2.196.18610.2.196.186
6010.2.196.187/3210.2.196.187 – 10.2.196.18710.2.196.187
6110.2.196.188/3210.2.196.188 – 10.2.196.18810.2.196.188
6210.2.196.189/3210.2.196.189 – 10.2.196.18910.2.196.189
6310.2.196.190/3210.2.196.190 – 10.2.196.19010.2.196.190
6410.2.196.191/3210.2.196.191 – 10.2.196.19110.2.196.191
6510.2.196.192/3210.2.196.192 – 10.2.196.19210.2.196.192
6610.2.196.193/3210.2.196.193 – 10.2.196.19310.2.196.193
6710.2.196.194/3210.2.196.194 – 10.2.196.19410.2.196.194
6810.2.196.195/3210.2.196.195 – 10.2.196.19510.2.196.195
6910.2.196.196/3210.2.196.196 – 10.2.196.19610.2.196.196
7010.2.196.197/3210.2.196.197 – 10.2.196.19710.2.196.197
7110.2.196.198/3210.2.196.198 – 10.2.196.19810.2.196.198
7210.2.196.199/3210.2.196.199 – 10.2.196.19910.2.196.199
7310.2.196.200/3210.2.196.200 – 10.2.196.20010.2.196.200
7410.2.196.201/3210.2.196.201 – 10.2.196.20110.2.196.201
7510.2.196.202/3210.2.196.202 – 10.2.196.20210.2.196.202
7610.2.196.203/3210.2.196.203 – 10.2.196.20310.2.196.203
7710.2.196.204/3210.2.196.204 – 10.2.196.20410.2.196.204
7810.2.196.205/3210.2.196.205 – 10.2.196.20510.2.196.205
7910.2.196.206/3210.2.196.206 – 10.2.196.20610.2.196.206
8010.2.196.207/3210.2.196.207 – 10.2.196.20710.2.196.207
8110.2.196.208/3210.2.196.208 – 10.2.196.20810.2.196.208
8210.2.196.209/3210.2.196.209 – 10.2.196.20910.2.196.209
8310.2.196.210/3210.2.196.210 – 10.2.196.21010.2.196.210
8410.2.196.211/3210.2.196.211 – 10.2.196.21110.2.196.211
8510.2.196.212/3210.2.196.212 – 10.2.196.21210.2.196.212
8610.2.196.213/3210.2.196.213 – 10.2.196.21310.2.196.213
8710.2.196.214/3210.2.196.214 – 10.2.196.21410.2.196.214
8810.2.196.215/3210.2.196.215 – 10.2.196.21510.2.196.215
8910.2.196.216/3210.2.196.216 – 10.2.196.21610.2.196.216
9010.2.196.217/3210.2.196.217 – 10.2.196.21710.2.196.217
9110.2.196.218/3210.2.196.218 – 10.2.196.21810.2.196.218
9210.2.196.219/3210.2.196.219 – 10.2.196.21910.2.196.219
9310.2.196.220/3210.2.196.220 – 10.2.196.22010.2.196.220
9410.2.196.221/3210.2.196.221 – 10.2.196.22110.2.196.221
9510.2.196.222/3210.2.196.222 – 10.2.196.22210.2.196.222
9610.2.196.223/3210.2.196.223 – 10.2.196.22310.2.196.223
9710.2.196.224/3210.2.196.224 – 10.2.196.22410.2.196.224
9810.2.196.225/3210.2.196.225 – 10.2.196.22510.2.196.225
9910.2.196.226/3210.2.196.226 – 10.2.196.22610.2.196.226
10010.2.196.227/3210.2.196.227 – 10.2.196.22710.2.196.227
10110.2.196.228/3210.2.196.228 – 10.2.196.22810.2.196.228
10210.2.196.229/3210.2.196.229 – 10.2.196.22910.2.196.229
10310.2.196.230/3210.2.196.230 – 10.2.196.23010.2.196.230
10410.2.196.231/3210.2.196.231 – 10.2.196.23110.2.196.231
10510.2.196.232/3210.2.196.232 – 10.2.196.23210.2.196.232
10610.2.196.233/3210.2.196.233 – 10.2.196.23310.2.196.233
10710.2.196.234/3210.2.196.234 – 10.2.196.23410.2.196.234
10810.2.196.235/3210.2.196.235 – 10.2.196.23510.2.196.235
10910.2.196.236/3210.2.196.236 – 10.2.196.23610.2.196.236
11010.2.196.237/3210.2.196.237 – 10.2.196.23710.2.196.237
11110.2.196.238/3210.2.196.238 – 10.2.196.23810.2.196.238
11210.2.196.239/3210.2.196.239 – 10.2.196.23910.2.196.239
11310.2.196.240/3210.2.196.240 – 10.2.196.24010.2.196.240
11410.2.196.241/3210.2.196.241 – 10.2.196.24110.2.196.241
11510.2.196.242/3210.2.196.242 – 10.2.196.24210.2.196.242
11610.2.196.243/3210.2.196.243 – 10.2.196.24310.2.196.243
11710.2.196.244/3210.2.196.244 – 10.2.196.24410.2.196.244
11810.2.196.245/3210.2.196.245 – 10.2.196.24510.2.196.245
11910.2.196.246/3210.2.196.246 – 10.2.196.24610.2.196.246
12010.2.196.247/3210.2.196.247 – 10.2.196.24710.2.196.247
12110.2.196.248/3210.2.196.248 – 10.2.196.24810.2.196.248
12210.2.196.249/3210.2.196.249 – 10.2.196.24910.2.196.249
12310.2.196.250/3210.2.196.250 – 10.2.196.25010.2.196.250
12410.2.196.251/3210.2.196.251 – 10.2.196.25110.2.196.251
12510.2.196.252/3210.2.196.252 – 10.2.196.25210.2.196.252
12610.2.196.253/3210.2.196.253 – 10.2.196.25310.2.196.253
12710.2.196.254/3210.2.196.254 – 10.2.196.25410.2.196.254
12810.2.196.255/3210.2.196.255 – 10.2.196.25510.2.196.255
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 →