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)10.149.232.128/25
network10.149.232.128/25
broadcast10.149.232.255
first host10.149.232.129
last host10.149.232.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.149.232.128/25
address00001010.10010101.11101000.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10010101.11101000.10000000
broadcast00001010.10010101.11101000.11111111
green = network part, grey = host part
hex0x0a95e880
decimal177596544
reverse dns128.232.149.10.in-addr.arpa
ipv4-mapped::ffff:a95:e880

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.149.232.128/3210.149.232.128 – 10.149.232.12810.149.232.128
210.149.232.129/3210.149.232.129 – 10.149.232.12910.149.232.129
310.149.232.130/3210.149.232.130 – 10.149.232.13010.149.232.130
410.149.232.131/3210.149.232.131 – 10.149.232.13110.149.232.131
510.149.232.132/3210.149.232.132 – 10.149.232.13210.149.232.132
610.149.232.133/3210.149.232.133 – 10.149.232.13310.149.232.133
710.149.232.134/3210.149.232.134 – 10.149.232.13410.149.232.134
810.149.232.135/3210.149.232.135 – 10.149.232.13510.149.232.135
910.149.232.136/3210.149.232.136 – 10.149.232.13610.149.232.136
1010.149.232.137/3210.149.232.137 – 10.149.232.13710.149.232.137
1110.149.232.138/3210.149.232.138 – 10.149.232.13810.149.232.138
1210.149.232.139/3210.149.232.139 – 10.149.232.13910.149.232.139
1310.149.232.140/3210.149.232.140 – 10.149.232.14010.149.232.140
1410.149.232.141/3210.149.232.141 – 10.149.232.14110.149.232.141
1510.149.232.142/3210.149.232.142 – 10.149.232.14210.149.232.142
1610.149.232.143/3210.149.232.143 – 10.149.232.14310.149.232.143
1710.149.232.144/3210.149.232.144 – 10.149.232.14410.149.232.144
1810.149.232.145/3210.149.232.145 – 10.149.232.14510.149.232.145
1910.149.232.146/3210.149.232.146 – 10.149.232.14610.149.232.146
2010.149.232.147/3210.149.232.147 – 10.149.232.14710.149.232.147
2110.149.232.148/3210.149.232.148 – 10.149.232.14810.149.232.148
2210.149.232.149/3210.149.232.149 – 10.149.232.14910.149.232.149
2310.149.232.150/3210.149.232.150 – 10.149.232.15010.149.232.150
2410.149.232.151/3210.149.232.151 – 10.149.232.15110.149.232.151
2510.149.232.152/3210.149.232.152 – 10.149.232.15210.149.232.152
2610.149.232.153/3210.149.232.153 – 10.149.232.15310.149.232.153
2710.149.232.154/3210.149.232.154 – 10.149.232.15410.149.232.154
2810.149.232.155/3210.149.232.155 – 10.149.232.15510.149.232.155
2910.149.232.156/3210.149.232.156 – 10.149.232.15610.149.232.156
3010.149.232.157/3210.149.232.157 – 10.149.232.15710.149.232.157
3110.149.232.158/3210.149.232.158 – 10.149.232.15810.149.232.158
3210.149.232.159/3210.149.232.159 – 10.149.232.15910.149.232.159
3310.149.232.160/3210.149.232.160 – 10.149.232.16010.149.232.160
3410.149.232.161/3210.149.232.161 – 10.149.232.16110.149.232.161
3510.149.232.162/3210.149.232.162 – 10.149.232.16210.149.232.162
3610.149.232.163/3210.149.232.163 – 10.149.232.16310.149.232.163
3710.149.232.164/3210.149.232.164 – 10.149.232.16410.149.232.164
3810.149.232.165/3210.149.232.165 – 10.149.232.16510.149.232.165
3910.149.232.166/3210.149.232.166 – 10.149.232.16610.149.232.166
4010.149.232.167/3210.149.232.167 – 10.149.232.16710.149.232.167
4110.149.232.168/3210.149.232.168 – 10.149.232.16810.149.232.168
4210.149.232.169/3210.149.232.169 – 10.149.232.16910.149.232.169
4310.149.232.170/3210.149.232.170 – 10.149.232.17010.149.232.170
4410.149.232.171/3210.149.232.171 – 10.149.232.17110.149.232.171
4510.149.232.172/3210.149.232.172 – 10.149.232.17210.149.232.172
4610.149.232.173/3210.149.232.173 – 10.149.232.17310.149.232.173
4710.149.232.174/3210.149.232.174 – 10.149.232.17410.149.232.174
4810.149.232.175/3210.149.232.175 – 10.149.232.17510.149.232.175
4910.149.232.176/3210.149.232.176 – 10.149.232.17610.149.232.176
5010.149.232.177/3210.149.232.177 – 10.149.232.17710.149.232.177
5110.149.232.178/3210.149.232.178 – 10.149.232.17810.149.232.178
5210.149.232.179/3210.149.232.179 – 10.149.232.17910.149.232.179
5310.149.232.180/3210.149.232.180 – 10.149.232.18010.149.232.180
5410.149.232.181/3210.149.232.181 – 10.149.232.18110.149.232.181
5510.149.232.182/3210.149.232.182 – 10.149.232.18210.149.232.182
5610.149.232.183/3210.149.232.183 – 10.149.232.18310.149.232.183
5710.149.232.184/3210.149.232.184 – 10.149.232.18410.149.232.184
5810.149.232.185/3210.149.232.185 – 10.149.232.18510.149.232.185
5910.149.232.186/3210.149.232.186 – 10.149.232.18610.149.232.186
6010.149.232.187/3210.149.232.187 – 10.149.232.18710.149.232.187
6110.149.232.188/3210.149.232.188 – 10.149.232.18810.149.232.188
6210.149.232.189/3210.149.232.189 – 10.149.232.18910.149.232.189
6310.149.232.190/3210.149.232.190 – 10.149.232.19010.149.232.190
6410.149.232.191/3210.149.232.191 – 10.149.232.19110.149.232.191
6510.149.232.192/3210.149.232.192 – 10.149.232.19210.149.232.192
6610.149.232.193/3210.149.232.193 – 10.149.232.19310.149.232.193
6710.149.232.194/3210.149.232.194 – 10.149.232.19410.149.232.194
6810.149.232.195/3210.149.232.195 – 10.149.232.19510.149.232.195
6910.149.232.196/3210.149.232.196 – 10.149.232.19610.149.232.196
7010.149.232.197/3210.149.232.197 – 10.149.232.19710.149.232.197
7110.149.232.198/3210.149.232.198 – 10.149.232.19810.149.232.198
7210.149.232.199/3210.149.232.199 – 10.149.232.19910.149.232.199
7310.149.232.200/3210.149.232.200 – 10.149.232.20010.149.232.200
7410.149.232.201/3210.149.232.201 – 10.149.232.20110.149.232.201
7510.149.232.202/3210.149.232.202 – 10.149.232.20210.149.232.202
7610.149.232.203/3210.149.232.203 – 10.149.232.20310.149.232.203
7710.149.232.204/3210.149.232.204 – 10.149.232.20410.149.232.204
7810.149.232.205/3210.149.232.205 – 10.149.232.20510.149.232.205
7910.149.232.206/3210.149.232.206 – 10.149.232.20610.149.232.206
8010.149.232.207/3210.149.232.207 – 10.149.232.20710.149.232.207
8110.149.232.208/3210.149.232.208 – 10.149.232.20810.149.232.208
8210.149.232.209/3210.149.232.209 – 10.149.232.20910.149.232.209
8310.149.232.210/3210.149.232.210 – 10.149.232.21010.149.232.210
8410.149.232.211/3210.149.232.211 – 10.149.232.21110.149.232.211
8510.149.232.212/3210.149.232.212 – 10.149.232.21210.149.232.212
8610.149.232.213/3210.149.232.213 – 10.149.232.21310.149.232.213
8710.149.232.214/3210.149.232.214 – 10.149.232.21410.149.232.214
8810.149.232.215/3210.149.232.215 – 10.149.232.21510.149.232.215
8910.149.232.216/3210.149.232.216 – 10.149.232.21610.149.232.216
9010.149.232.217/3210.149.232.217 – 10.149.232.21710.149.232.217
9110.149.232.218/3210.149.232.218 – 10.149.232.21810.149.232.218
9210.149.232.219/3210.149.232.219 – 10.149.232.21910.149.232.219
9310.149.232.220/3210.149.232.220 – 10.149.232.22010.149.232.220
9410.149.232.221/3210.149.232.221 – 10.149.232.22110.149.232.221
9510.149.232.222/3210.149.232.222 – 10.149.232.22210.149.232.222
9610.149.232.223/3210.149.232.223 – 10.149.232.22310.149.232.223
9710.149.232.224/3210.149.232.224 – 10.149.232.22410.149.232.224
9810.149.232.225/3210.149.232.225 – 10.149.232.22510.149.232.225
9910.149.232.226/3210.149.232.226 – 10.149.232.22610.149.232.226
10010.149.232.227/3210.149.232.227 – 10.149.232.22710.149.232.227
10110.149.232.228/3210.149.232.228 – 10.149.232.22810.149.232.228
10210.149.232.229/3210.149.232.229 – 10.149.232.22910.149.232.229
10310.149.232.230/3210.149.232.230 – 10.149.232.23010.149.232.230
10410.149.232.231/3210.149.232.231 – 10.149.232.23110.149.232.231
10510.149.232.232/3210.149.232.232 – 10.149.232.23210.149.232.232
10610.149.232.233/3210.149.232.233 – 10.149.232.23310.149.232.233
10710.149.232.234/3210.149.232.234 – 10.149.232.23410.149.232.234
10810.149.232.235/3210.149.232.235 – 10.149.232.23510.149.232.235
10910.149.232.236/3210.149.232.236 – 10.149.232.23610.149.232.236
11010.149.232.237/3210.149.232.237 – 10.149.232.23710.149.232.237
11110.149.232.238/3210.149.232.238 – 10.149.232.23810.149.232.238
11210.149.232.239/3210.149.232.239 – 10.149.232.23910.149.232.239
11310.149.232.240/3210.149.232.240 – 10.149.232.24010.149.232.240
11410.149.232.241/3210.149.232.241 – 10.149.232.24110.149.232.241
11510.149.232.242/3210.149.232.242 – 10.149.232.24210.149.232.242
11610.149.232.243/3210.149.232.243 – 10.149.232.24310.149.232.243
11710.149.232.244/3210.149.232.244 – 10.149.232.24410.149.232.244
11810.149.232.245/3210.149.232.245 – 10.149.232.24510.149.232.245
11910.149.232.246/3210.149.232.246 – 10.149.232.24610.149.232.246
12010.149.232.247/3210.149.232.247 – 10.149.232.24710.149.232.247
12110.149.232.248/3210.149.232.248 – 10.149.232.24810.149.232.248
12210.149.232.249/3210.149.232.249 – 10.149.232.24910.149.232.249
12310.149.232.250/3210.149.232.250 – 10.149.232.25010.149.232.250
12410.149.232.251/3210.149.232.251 – 10.149.232.25110.149.232.251
12510.149.232.252/3210.149.232.252 – 10.149.232.25210.149.232.252
12610.149.232.253/3210.149.232.253 – 10.149.232.25310.149.232.253
12710.149.232.254/3210.149.232.254 – 10.149.232.25410.149.232.254
12810.149.232.255/3210.149.232.255 – 10.149.232.25510.149.232.255
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 →