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)10.2.152.128/25
network10.2.152.128/25
broadcast10.2.152.255
first host10.2.152.129
last host10.2.152.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.2.152.128/25
address00001010.00000010.10011000.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.00000010.10011000.10000000
broadcast00001010.00000010.10011000.11111111
green = network part, grey = host part
hex0x0a029880
decimal167942272
reverse dns128.152.2.10.in-addr.arpa
ipv4-mapped::ffff:a02:9880

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.2.152.128/3210.2.152.128 – 10.2.152.12810.2.152.128
210.2.152.129/3210.2.152.129 – 10.2.152.12910.2.152.129
310.2.152.130/3210.2.152.130 – 10.2.152.13010.2.152.130
410.2.152.131/3210.2.152.131 – 10.2.152.13110.2.152.131
510.2.152.132/3210.2.152.132 – 10.2.152.13210.2.152.132
610.2.152.133/3210.2.152.133 – 10.2.152.13310.2.152.133
710.2.152.134/3210.2.152.134 – 10.2.152.13410.2.152.134
810.2.152.135/3210.2.152.135 – 10.2.152.13510.2.152.135
910.2.152.136/3210.2.152.136 – 10.2.152.13610.2.152.136
1010.2.152.137/3210.2.152.137 – 10.2.152.13710.2.152.137
1110.2.152.138/3210.2.152.138 – 10.2.152.13810.2.152.138
1210.2.152.139/3210.2.152.139 – 10.2.152.13910.2.152.139
1310.2.152.140/3210.2.152.140 – 10.2.152.14010.2.152.140
1410.2.152.141/3210.2.152.141 – 10.2.152.14110.2.152.141
1510.2.152.142/3210.2.152.142 – 10.2.152.14210.2.152.142
1610.2.152.143/3210.2.152.143 – 10.2.152.14310.2.152.143
1710.2.152.144/3210.2.152.144 – 10.2.152.14410.2.152.144
1810.2.152.145/3210.2.152.145 – 10.2.152.14510.2.152.145
1910.2.152.146/3210.2.152.146 – 10.2.152.14610.2.152.146
2010.2.152.147/3210.2.152.147 – 10.2.152.14710.2.152.147
2110.2.152.148/3210.2.152.148 – 10.2.152.14810.2.152.148
2210.2.152.149/3210.2.152.149 – 10.2.152.14910.2.152.149
2310.2.152.150/3210.2.152.150 – 10.2.152.15010.2.152.150
2410.2.152.151/3210.2.152.151 – 10.2.152.15110.2.152.151
2510.2.152.152/3210.2.152.152 – 10.2.152.15210.2.152.152
2610.2.152.153/3210.2.152.153 – 10.2.152.15310.2.152.153
2710.2.152.154/3210.2.152.154 – 10.2.152.15410.2.152.154
2810.2.152.155/3210.2.152.155 – 10.2.152.15510.2.152.155
2910.2.152.156/3210.2.152.156 – 10.2.152.15610.2.152.156
3010.2.152.157/3210.2.152.157 – 10.2.152.15710.2.152.157
3110.2.152.158/3210.2.152.158 – 10.2.152.15810.2.152.158
3210.2.152.159/3210.2.152.159 – 10.2.152.15910.2.152.159
3310.2.152.160/3210.2.152.160 – 10.2.152.16010.2.152.160
3410.2.152.161/3210.2.152.161 – 10.2.152.16110.2.152.161
3510.2.152.162/3210.2.152.162 – 10.2.152.16210.2.152.162
3610.2.152.163/3210.2.152.163 – 10.2.152.16310.2.152.163
3710.2.152.164/3210.2.152.164 – 10.2.152.16410.2.152.164
3810.2.152.165/3210.2.152.165 – 10.2.152.16510.2.152.165
3910.2.152.166/3210.2.152.166 – 10.2.152.16610.2.152.166
4010.2.152.167/3210.2.152.167 – 10.2.152.16710.2.152.167
4110.2.152.168/3210.2.152.168 – 10.2.152.16810.2.152.168
4210.2.152.169/3210.2.152.169 – 10.2.152.16910.2.152.169
4310.2.152.170/3210.2.152.170 – 10.2.152.17010.2.152.170
4410.2.152.171/3210.2.152.171 – 10.2.152.17110.2.152.171
4510.2.152.172/3210.2.152.172 – 10.2.152.17210.2.152.172
4610.2.152.173/3210.2.152.173 – 10.2.152.17310.2.152.173
4710.2.152.174/3210.2.152.174 – 10.2.152.17410.2.152.174
4810.2.152.175/3210.2.152.175 – 10.2.152.17510.2.152.175
4910.2.152.176/3210.2.152.176 – 10.2.152.17610.2.152.176
5010.2.152.177/3210.2.152.177 – 10.2.152.17710.2.152.177
5110.2.152.178/3210.2.152.178 – 10.2.152.17810.2.152.178
5210.2.152.179/3210.2.152.179 – 10.2.152.17910.2.152.179
5310.2.152.180/3210.2.152.180 – 10.2.152.18010.2.152.180
5410.2.152.181/3210.2.152.181 – 10.2.152.18110.2.152.181
5510.2.152.182/3210.2.152.182 – 10.2.152.18210.2.152.182
5610.2.152.183/3210.2.152.183 – 10.2.152.18310.2.152.183
5710.2.152.184/3210.2.152.184 – 10.2.152.18410.2.152.184
5810.2.152.185/3210.2.152.185 – 10.2.152.18510.2.152.185
5910.2.152.186/3210.2.152.186 – 10.2.152.18610.2.152.186
6010.2.152.187/3210.2.152.187 – 10.2.152.18710.2.152.187
6110.2.152.188/3210.2.152.188 – 10.2.152.18810.2.152.188
6210.2.152.189/3210.2.152.189 – 10.2.152.18910.2.152.189
6310.2.152.190/3210.2.152.190 – 10.2.152.19010.2.152.190
6410.2.152.191/3210.2.152.191 – 10.2.152.19110.2.152.191
6510.2.152.192/3210.2.152.192 – 10.2.152.19210.2.152.192
6610.2.152.193/3210.2.152.193 – 10.2.152.19310.2.152.193
6710.2.152.194/3210.2.152.194 – 10.2.152.19410.2.152.194
6810.2.152.195/3210.2.152.195 – 10.2.152.19510.2.152.195
6910.2.152.196/3210.2.152.196 – 10.2.152.19610.2.152.196
7010.2.152.197/3210.2.152.197 – 10.2.152.19710.2.152.197
7110.2.152.198/3210.2.152.198 – 10.2.152.19810.2.152.198
7210.2.152.199/3210.2.152.199 – 10.2.152.19910.2.152.199
7310.2.152.200/3210.2.152.200 – 10.2.152.20010.2.152.200
7410.2.152.201/3210.2.152.201 – 10.2.152.20110.2.152.201
7510.2.152.202/3210.2.152.202 – 10.2.152.20210.2.152.202
7610.2.152.203/3210.2.152.203 – 10.2.152.20310.2.152.203
7710.2.152.204/3210.2.152.204 – 10.2.152.20410.2.152.204
7810.2.152.205/3210.2.152.205 – 10.2.152.20510.2.152.205
7910.2.152.206/3210.2.152.206 – 10.2.152.20610.2.152.206
8010.2.152.207/3210.2.152.207 – 10.2.152.20710.2.152.207
8110.2.152.208/3210.2.152.208 – 10.2.152.20810.2.152.208
8210.2.152.209/3210.2.152.209 – 10.2.152.20910.2.152.209
8310.2.152.210/3210.2.152.210 – 10.2.152.21010.2.152.210
8410.2.152.211/3210.2.152.211 – 10.2.152.21110.2.152.211
8510.2.152.212/3210.2.152.212 – 10.2.152.21210.2.152.212
8610.2.152.213/3210.2.152.213 – 10.2.152.21310.2.152.213
8710.2.152.214/3210.2.152.214 – 10.2.152.21410.2.152.214
8810.2.152.215/3210.2.152.215 – 10.2.152.21510.2.152.215
8910.2.152.216/3210.2.152.216 – 10.2.152.21610.2.152.216
9010.2.152.217/3210.2.152.217 – 10.2.152.21710.2.152.217
9110.2.152.218/3210.2.152.218 – 10.2.152.21810.2.152.218
9210.2.152.219/3210.2.152.219 – 10.2.152.21910.2.152.219
9310.2.152.220/3210.2.152.220 – 10.2.152.22010.2.152.220
9410.2.152.221/3210.2.152.221 – 10.2.152.22110.2.152.221
9510.2.152.222/3210.2.152.222 – 10.2.152.22210.2.152.222
9610.2.152.223/3210.2.152.223 – 10.2.152.22310.2.152.223
9710.2.152.224/3210.2.152.224 – 10.2.152.22410.2.152.224
9810.2.152.225/3210.2.152.225 – 10.2.152.22510.2.152.225
9910.2.152.226/3210.2.152.226 – 10.2.152.22610.2.152.226
10010.2.152.227/3210.2.152.227 – 10.2.152.22710.2.152.227
10110.2.152.228/3210.2.152.228 – 10.2.152.22810.2.152.228
10210.2.152.229/3210.2.152.229 – 10.2.152.22910.2.152.229
10310.2.152.230/3210.2.152.230 – 10.2.152.23010.2.152.230
10410.2.152.231/3210.2.152.231 – 10.2.152.23110.2.152.231
10510.2.152.232/3210.2.152.232 – 10.2.152.23210.2.152.232
10610.2.152.233/3210.2.152.233 – 10.2.152.23310.2.152.233
10710.2.152.234/3210.2.152.234 – 10.2.152.23410.2.152.234
10810.2.152.235/3210.2.152.235 – 10.2.152.23510.2.152.235
10910.2.152.236/3210.2.152.236 – 10.2.152.23610.2.152.236
11010.2.152.237/3210.2.152.237 – 10.2.152.23710.2.152.237
11110.2.152.238/3210.2.152.238 – 10.2.152.23810.2.152.238
11210.2.152.239/3210.2.152.239 – 10.2.152.23910.2.152.239
11310.2.152.240/3210.2.152.240 – 10.2.152.24010.2.152.240
11410.2.152.241/3210.2.152.241 – 10.2.152.24110.2.152.241
11510.2.152.242/3210.2.152.242 – 10.2.152.24210.2.152.242
11610.2.152.243/3210.2.152.243 – 10.2.152.24310.2.152.243
11710.2.152.244/3210.2.152.244 – 10.2.152.24410.2.152.244
11810.2.152.245/3210.2.152.245 – 10.2.152.24510.2.152.245
11910.2.152.246/3210.2.152.246 – 10.2.152.24610.2.152.246
12010.2.152.247/3210.2.152.247 – 10.2.152.24710.2.152.247
12110.2.152.248/3210.2.152.248 – 10.2.152.24810.2.152.248
12210.2.152.249/3210.2.152.249 – 10.2.152.24910.2.152.249
12310.2.152.250/3210.2.152.250 – 10.2.152.25010.2.152.250
12410.2.152.251/3210.2.152.251 – 10.2.152.25110.2.152.251
12510.2.152.252/3210.2.152.252 – 10.2.152.25210.2.152.252
12610.2.152.253/3210.2.152.253 – 10.2.152.25310.2.152.253
12710.2.152.254/3210.2.152.254 – 10.2.152.25410.2.152.254
12810.2.152.255/3210.2.152.255 – 10.2.152.25510.2.152.255
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 →