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)10.167.202.128/25
network10.167.202.128/25
broadcast10.167.202.255
first host10.167.202.129
last host10.167.202.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.202.128/25
address00001010.10100111.11001010.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.11001010.10000000
broadcast00001010.10100111.11001010.11111111
green = network part, grey = host part
hex0x0aa7ca80
decimal178768512
reverse dns128.202.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:ca80

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.202.128/3210.167.202.128 – 10.167.202.12810.167.202.128
210.167.202.129/3210.167.202.129 – 10.167.202.12910.167.202.129
310.167.202.130/3210.167.202.130 – 10.167.202.13010.167.202.130
410.167.202.131/3210.167.202.131 – 10.167.202.13110.167.202.131
510.167.202.132/3210.167.202.132 – 10.167.202.13210.167.202.132
610.167.202.133/3210.167.202.133 – 10.167.202.13310.167.202.133
710.167.202.134/3210.167.202.134 – 10.167.202.13410.167.202.134
810.167.202.135/3210.167.202.135 – 10.167.202.13510.167.202.135
910.167.202.136/3210.167.202.136 – 10.167.202.13610.167.202.136
1010.167.202.137/3210.167.202.137 – 10.167.202.13710.167.202.137
1110.167.202.138/3210.167.202.138 – 10.167.202.13810.167.202.138
1210.167.202.139/3210.167.202.139 – 10.167.202.13910.167.202.139
1310.167.202.140/3210.167.202.140 – 10.167.202.14010.167.202.140
1410.167.202.141/3210.167.202.141 – 10.167.202.14110.167.202.141
1510.167.202.142/3210.167.202.142 – 10.167.202.14210.167.202.142
1610.167.202.143/3210.167.202.143 – 10.167.202.14310.167.202.143
1710.167.202.144/3210.167.202.144 – 10.167.202.14410.167.202.144
1810.167.202.145/3210.167.202.145 – 10.167.202.14510.167.202.145
1910.167.202.146/3210.167.202.146 – 10.167.202.14610.167.202.146
2010.167.202.147/3210.167.202.147 – 10.167.202.14710.167.202.147
2110.167.202.148/3210.167.202.148 – 10.167.202.14810.167.202.148
2210.167.202.149/3210.167.202.149 – 10.167.202.14910.167.202.149
2310.167.202.150/3210.167.202.150 – 10.167.202.15010.167.202.150
2410.167.202.151/3210.167.202.151 – 10.167.202.15110.167.202.151
2510.167.202.152/3210.167.202.152 – 10.167.202.15210.167.202.152
2610.167.202.153/3210.167.202.153 – 10.167.202.15310.167.202.153
2710.167.202.154/3210.167.202.154 – 10.167.202.15410.167.202.154
2810.167.202.155/3210.167.202.155 – 10.167.202.15510.167.202.155
2910.167.202.156/3210.167.202.156 – 10.167.202.15610.167.202.156
3010.167.202.157/3210.167.202.157 – 10.167.202.15710.167.202.157
3110.167.202.158/3210.167.202.158 – 10.167.202.15810.167.202.158
3210.167.202.159/3210.167.202.159 – 10.167.202.15910.167.202.159
3310.167.202.160/3210.167.202.160 – 10.167.202.16010.167.202.160
3410.167.202.161/3210.167.202.161 – 10.167.202.16110.167.202.161
3510.167.202.162/3210.167.202.162 – 10.167.202.16210.167.202.162
3610.167.202.163/3210.167.202.163 – 10.167.202.16310.167.202.163
3710.167.202.164/3210.167.202.164 – 10.167.202.16410.167.202.164
3810.167.202.165/3210.167.202.165 – 10.167.202.16510.167.202.165
3910.167.202.166/3210.167.202.166 – 10.167.202.16610.167.202.166
4010.167.202.167/3210.167.202.167 – 10.167.202.16710.167.202.167
4110.167.202.168/3210.167.202.168 – 10.167.202.16810.167.202.168
4210.167.202.169/3210.167.202.169 – 10.167.202.16910.167.202.169
4310.167.202.170/3210.167.202.170 – 10.167.202.17010.167.202.170
4410.167.202.171/3210.167.202.171 – 10.167.202.17110.167.202.171
4510.167.202.172/3210.167.202.172 – 10.167.202.17210.167.202.172
4610.167.202.173/3210.167.202.173 – 10.167.202.17310.167.202.173
4710.167.202.174/3210.167.202.174 – 10.167.202.17410.167.202.174
4810.167.202.175/3210.167.202.175 – 10.167.202.17510.167.202.175
4910.167.202.176/3210.167.202.176 – 10.167.202.17610.167.202.176
5010.167.202.177/3210.167.202.177 – 10.167.202.17710.167.202.177
5110.167.202.178/3210.167.202.178 – 10.167.202.17810.167.202.178
5210.167.202.179/3210.167.202.179 – 10.167.202.17910.167.202.179
5310.167.202.180/3210.167.202.180 – 10.167.202.18010.167.202.180
5410.167.202.181/3210.167.202.181 – 10.167.202.18110.167.202.181
5510.167.202.182/3210.167.202.182 – 10.167.202.18210.167.202.182
5610.167.202.183/3210.167.202.183 – 10.167.202.18310.167.202.183
5710.167.202.184/3210.167.202.184 – 10.167.202.18410.167.202.184
5810.167.202.185/3210.167.202.185 – 10.167.202.18510.167.202.185
5910.167.202.186/3210.167.202.186 – 10.167.202.18610.167.202.186
6010.167.202.187/3210.167.202.187 – 10.167.202.18710.167.202.187
6110.167.202.188/3210.167.202.188 – 10.167.202.18810.167.202.188
6210.167.202.189/3210.167.202.189 – 10.167.202.18910.167.202.189
6310.167.202.190/3210.167.202.190 – 10.167.202.19010.167.202.190
6410.167.202.191/3210.167.202.191 – 10.167.202.19110.167.202.191
6510.167.202.192/3210.167.202.192 – 10.167.202.19210.167.202.192
6610.167.202.193/3210.167.202.193 – 10.167.202.19310.167.202.193
6710.167.202.194/3210.167.202.194 – 10.167.202.19410.167.202.194
6810.167.202.195/3210.167.202.195 – 10.167.202.19510.167.202.195
6910.167.202.196/3210.167.202.196 – 10.167.202.19610.167.202.196
7010.167.202.197/3210.167.202.197 – 10.167.202.19710.167.202.197
7110.167.202.198/3210.167.202.198 – 10.167.202.19810.167.202.198
7210.167.202.199/3210.167.202.199 – 10.167.202.19910.167.202.199
7310.167.202.200/3210.167.202.200 – 10.167.202.20010.167.202.200
7410.167.202.201/3210.167.202.201 – 10.167.202.20110.167.202.201
7510.167.202.202/3210.167.202.202 – 10.167.202.20210.167.202.202
7610.167.202.203/3210.167.202.203 – 10.167.202.20310.167.202.203
7710.167.202.204/3210.167.202.204 – 10.167.202.20410.167.202.204
7810.167.202.205/3210.167.202.205 – 10.167.202.20510.167.202.205
7910.167.202.206/3210.167.202.206 – 10.167.202.20610.167.202.206
8010.167.202.207/3210.167.202.207 – 10.167.202.20710.167.202.207
8110.167.202.208/3210.167.202.208 – 10.167.202.20810.167.202.208
8210.167.202.209/3210.167.202.209 – 10.167.202.20910.167.202.209
8310.167.202.210/3210.167.202.210 – 10.167.202.21010.167.202.210
8410.167.202.211/3210.167.202.211 – 10.167.202.21110.167.202.211
8510.167.202.212/3210.167.202.212 – 10.167.202.21210.167.202.212
8610.167.202.213/3210.167.202.213 – 10.167.202.21310.167.202.213
8710.167.202.214/3210.167.202.214 – 10.167.202.21410.167.202.214
8810.167.202.215/3210.167.202.215 – 10.167.202.21510.167.202.215
8910.167.202.216/3210.167.202.216 – 10.167.202.21610.167.202.216
9010.167.202.217/3210.167.202.217 – 10.167.202.21710.167.202.217
9110.167.202.218/3210.167.202.218 – 10.167.202.21810.167.202.218
9210.167.202.219/3210.167.202.219 – 10.167.202.21910.167.202.219
9310.167.202.220/3210.167.202.220 – 10.167.202.22010.167.202.220
9410.167.202.221/3210.167.202.221 – 10.167.202.22110.167.202.221
9510.167.202.222/3210.167.202.222 – 10.167.202.22210.167.202.222
9610.167.202.223/3210.167.202.223 – 10.167.202.22310.167.202.223
9710.167.202.224/3210.167.202.224 – 10.167.202.22410.167.202.224
9810.167.202.225/3210.167.202.225 – 10.167.202.22510.167.202.225
9910.167.202.226/3210.167.202.226 – 10.167.202.22610.167.202.226
10010.167.202.227/3210.167.202.227 – 10.167.202.22710.167.202.227
10110.167.202.228/3210.167.202.228 – 10.167.202.22810.167.202.228
10210.167.202.229/3210.167.202.229 – 10.167.202.22910.167.202.229
10310.167.202.230/3210.167.202.230 – 10.167.202.23010.167.202.230
10410.167.202.231/3210.167.202.231 – 10.167.202.23110.167.202.231
10510.167.202.232/3210.167.202.232 – 10.167.202.23210.167.202.232
10610.167.202.233/3210.167.202.233 – 10.167.202.23310.167.202.233
10710.167.202.234/3210.167.202.234 – 10.167.202.23410.167.202.234
10810.167.202.235/3210.167.202.235 – 10.167.202.23510.167.202.235
10910.167.202.236/3210.167.202.236 – 10.167.202.23610.167.202.236
11010.167.202.237/3210.167.202.237 – 10.167.202.23710.167.202.237
11110.167.202.238/3210.167.202.238 – 10.167.202.23810.167.202.238
11210.167.202.239/3210.167.202.239 – 10.167.202.23910.167.202.239
11310.167.202.240/3210.167.202.240 – 10.167.202.24010.167.202.240
11410.167.202.241/3210.167.202.241 – 10.167.202.24110.167.202.241
11510.167.202.242/3210.167.202.242 – 10.167.202.24210.167.202.242
11610.167.202.243/3210.167.202.243 – 10.167.202.24310.167.202.243
11710.167.202.244/3210.167.202.244 – 10.167.202.24410.167.202.244
11810.167.202.245/3210.167.202.245 – 10.167.202.24510.167.202.245
11910.167.202.246/3210.167.202.246 – 10.167.202.24610.167.202.246
12010.167.202.247/3210.167.202.247 – 10.167.202.24710.167.202.247
12110.167.202.248/3210.167.202.248 – 10.167.202.24810.167.202.248
12210.167.202.249/3210.167.202.249 – 10.167.202.24910.167.202.249
12310.167.202.250/3210.167.202.250 – 10.167.202.25010.167.202.250
12410.167.202.251/3210.167.202.251 – 10.167.202.25110.167.202.251
12510.167.202.252/3210.167.202.252 – 10.167.202.25210.167.202.252
12610.167.202.253/3210.167.202.253 – 10.167.202.25310.167.202.253
12710.167.202.254/3210.167.202.254 – 10.167.202.25410.167.202.254
12810.167.202.255/3210.167.202.255 – 10.167.202.25510.167.202.255
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 →