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)10.167.169.128/25
network10.167.169.128/25
broadcast10.167.169.255
first host10.167.169.129
last host10.167.169.254
subnet mask255.255.255.128
wildcard0.0.0.127
addresses128
usable hosts126
classA
ipcalc 10.167.169.128/25
address00001010.10100111.10101001.10000000
subnet mask11111111.11111111.11111111.10000000
network00001010.10100111.10101001.10000000
broadcast00001010.10100111.10101001.11111111
green = network part, grey = host part
hex0x0aa7a980
decimal178760064
reverse dns128.169.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:a980

/25 split into /32 · 128 subnets

close ×
#networkhost rangebroadcast
110.167.169.128/3210.167.169.128 – 10.167.169.12810.167.169.128
210.167.169.129/3210.167.169.129 – 10.167.169.12910.167.169.129
310.167.169.130/3210.167.169.130 – 10.167.169.13010.167.169.130
410.167.169.131/3210.167.169.131 – 10.167.169.13110.167.169.131
510.167.169.132/3210.167.169.132 – 10.167.169.13210.167.169.132
610.167.169.133/3210.167.169.133 – 10.167.169.13310.167.169.133
710.167.169.134/3210.167.169.134 – 10.167.169.13410.167.169.134
810.167.169.135/3210.167.169.135 – 10.167.169.13510.167.169.135
910.167.169.136/3210.167.169.136 – 10.167.169.13610.167.169.136
1010.167.169.137/3210.167.169.137 – 10.167.169.13710.167.169.137
1110.167.169.138/3210.167.169.138 – 10.167.169.13810.167.169.138
1210.167.169.139/3210.167.169.139 – 10.167.169.13910.167.169.139
1310.167.169.140/3210.167.169.140 – 10.167.169.14010.167.169.140
1410.167.169.141/3210.167.169.141 – 10.167.169.14110.167.169.141
1510.167.169.142/3210.167.169.142 – 10.167.169.14210.167.169.142
1610.167.169.143/3210.167.169.143 – 10.167.169.14310.167.169.143
1710.167.169.144/3210.167.169.144 – 10.167.169.14410.167.169.144
1810.167.169.145/3210.167.169.145 – 10.167.169.14510.167.169.145
1910.167.169.146/3210.167.169.146 – 10.167.169.14610.167.169.146
2010.167.169.147/3210.167.169.147 – 10.167.169.14710.167.169.147
2110.167.169.148/3210.167.169.148 – 10.167.169.14810.167.169.148
2210.167.169.149/3210.167.169.149 – 10.167.169.14910.167.169.149
2310.167.169.150/3210.167.169.150 – 10.167.169.15010.167.169.150
2410.167.169.151/3210.167.169.151 – 10.167.169.15110.167.169.151
2510.167.169.152/3210.167.169.152 – 10.167.169.15210.167.169.152
2610.167.169.153/3210.167.169.153 – 10.167.169.15310.167.169.153
2710.167.169.154/3210.167.169.154 – 10.167.169.15410.167.169.154
2810.167.169.155/3210.167.169.155 – 10.167.169.15510.167.169.155
2910.167.169.156/3210.167.169.156 – 10.167.169.15610.167.169.156
3010.167.169.157/3210.167.169.157 – 10.167.169.15710.167.169.157
3110.167.169.158/3210.167.169.158 – 10.167.169.15810.167.169.158
3210.167.169.159/3210.167.169.159 – 10.167.169.15910.167.169.159
3310.167.169.160/3210.167.169.160 – 10.167.169.16010.167.169.160
3410.167.169.161/3210.167.169.161 – 10.167.169.16110.167.169.161
3510.167.169.162/3210.167.169.162 – 10.167.169.16210.167.169.162
3610.167.169.163/3210.167.169.163 – 10.167.169.16310.167.169.163
3710.167.169.164/3210.167.169.164 – 10.167.169.16410.167.169.164
3810.167.169.165/3210.167.169.165 – 10.167.169.16510.167.169.165
3910.167.169.166/3210.167.169.166 – 10.167.169.16610.167.169.166
4010.167.169.167/3210.167.169.167 – 10.167.169.16710.167.169.167
4110.167.169.168/3210.167.169.168 – 10.167.169.16810.167.169.168
4210.167.169.169/3210.167.169.169 – 10.167.169.16910.167.169.169
4310.167.169.170/3210.167.169.170 – 10.167.169.17010.167.169.170
4410.167.169.171/3210.167.169.171 – 10.167.169.17110.167.169.171
4510.167.169.172/3210.167.169.172 – 10.167.169.17210.167.169.172
4610.167.169.173/3210.167.169.173 – 10.167.169.17310.167.169.173
4710.167.169.174/3210.167.169.174 – 10.167.169.17410.167.169.174
4810.167.169.175/3210.167.169.175 – 10.167.169.17510.167.169.175
4910.167.169.176/3210.167.169.176 – 10.167.169.17610.167.169.176
5010.167.169.177/3210.167.169.177 – 10.167.169.17710.167.169.177
5110.167.169.178/3210.167.169.178 – 10.167.169.17810.167.169.178
5210.167.169.179/3210.167.169.179 – 10.167.169.17910.167.169.179
5310.167.169.180/3210.167.169.180 – 10.167.169.18010.167.169.180
5410.167.169.181/3210.167.169.181 – 10.167.169.18110.167.169.181
5510.167.169.182/3210.167.169.182 – 10.167.169.18210.167.169.182
5610.167.169.183/3210.167.169.183 – 10.167.169.18310.167.169.183
5710.167.169.184/3210.167.169.184 – 10.167.169.18410.167.169.184
5810.167.169.185/3210.167.169.185 – 10.167.169.18510.167.169.185
5910.167.169.186/3210.167.169.186 – 10.167.169.18610.167.169.186
6010.167.169.187/3210.167.169.187 – 10.167.169.18710.167.169.187
6110.167.169.188/3210.167.169.188 – 10.167.169.18810.167.169.188
6210.167.169.189/3210.167.169.189 – 10.167.169.18910.167.169.189
6310.167.169.190/3210.167.169.190 – 10.167.169.19010.167.169.190
6410.167.169.191/3210.167.169.191 – 10.167.169.19110.167.169.191
6510.167.169.192/3210.167.169.192 – 10.167.169.19210.167.169.192
6610.167.169.193/3210.167.169.193 – 10.167.169.19310.167.169.193
6710.167.169.194/3210.167.169.194 – 10.167.169.19410.167.169.194
6810.167.169.195/3210.167.169.195 – 10.167.169.19510.167.169.195
6910.167.169.196/3210.167.169.196 – 10.167.169.19610.167.169.196
7010.167.169.197/3210.167.169.197 – 10.167.169.19710.167.169.197
7110.167.169.198/3210.167.169.198 – 10.167.169.19810.167.169.198
7210.167.169.199/3210.167.169.199 – 10.167.169.19910.167.169.199
7310.167.169.200/3210.167.169.200 – 10.167.169.20010.167.169.200
7410.167.169.201/3210.167.169.201 – 10.167.169.20110.167.169.201
7510.167.169.202/3210.167.169.202 – 10.167.169.20210.167.169.202
7610.167.169.203/3210.167.169.203 – 10.167.169.20310.167.169.203
7710.167.169.204/3210.167.169.204 – 10.167.169.20410.167.169.204
7810.167.169.205/3210.167.169.205 – 10.167.169.20510.167.169.205
7910.167.169.206/3210.167.169.206 – 10.167.169.20610.167.169.206
8010.167.169.207/3210.167.169.207 – 10.167.169.20710.167.169.207
8110.167.169.208/3210.167.169.208 – 10.167.169.20810.167.169.208
8210.167.169.209/3210.167.169.209 – 10.167.169.20910.167.169.209
8310.167.169.210/3210.167.169.210 – 10.167.169.21010.167.169.210
8410.167.169.211/3210.167.169.211 – 10.167.169.21110.167.169.211
8510.167.169.212/3210.167.169.212 – 10.167.169.21210.167.169.212
8610.167.169.213/3210.167.169.213 – 10.167.169.21310.167.169.213
8710.167.169.214/3210.167.169.214 – 10.167.169.21410.167.169.214
8810.167.169.215/3210.167.169.215 – 10.167.169.21510.167.169.215
8910.167.169.216/3210.167.169.216 – 10.167.169.21610.167.169.216
9010.167.169.217/3210.167.169.217 – 10.167.169.21710.167.169.217
9110.167.169.218/3210.167.169.218 – 10.167.169.21810.167.169.218
9210.167.169.219/3210.167.169.219 – 10.167.169.21910.167.169.219
9310.167.169.220/3210.167.169.220 – 10.167.169.22010.167.169.220
9410.167.169.221/3210.167.169.221 – 10.167.169.22110.167.169.221
9510.167.169.222/3210.167.169.222 – 10.167.169.22210.167.169.222
9610.167.169.223/3210.167.169.223 – 10.167.169.22310.167.169.223
9710.167.169.224/3210.167.169.224 – 10.167.169.22410.167.169.224
9810.167.169.225/3210.167.169.225 – 10.167.169.22510.167.169.225
9910.167.169.226/3210.167.169.226 – 10.167.169.22610.167.169.226
10010.167.169.227/3210.167.169.227 – 10.167.169.22710.167.169.227
10110.167.169.228/3210.167.169.228 – 10.167.169.22810.167.169.228
10210.167.169.229/3210.167.169.229 – 10.167.169.22910.167.169.229
10310.167.169.230/3210.167.169.230 – 10.167.169.23010.167.169.230
10410.167.169.231/3210.167.169.231 – 10.167.169.23110.167.169.231
10510.167.169.232/3210.167.169.232 – 10.167.169.23210.167.169.232
10610.167.169.233/3210.167.169.233 – 10.167.169.23310.167.169.233
10710.167.169.234/3210.167.169.234 – 10.167.169.23410.167.169.234
10810.167.169.235/3210.167.169.235 – 10.167.169.23510.167.169.235
10910.167.169.236/3210.167.169.236 – 10.167.169.23610.167.169.236
11010.167.169.237/3210.167.169.237 – 10.167.169.23710.167.169.237
11110.167.169.238/3210.167.169.238 – 10.167.169.23810.167.169.238
11210.167.169.239/3210.167.169.239 – 10.167.169.23910.167.169.239
11310.167.169.240/3210.167.169.240 – 10.167.169.24010.167.169.240
11410.167.169.241/3210.167.169.241 – 10.167.169.24110.167.169.241
11510.167.169.242/3210.167.169.242 – 10.167.169.24210.167.169.242
11610.167.169.243/3210.167.169.243 – 10.167.169.24310.167.169.243
11710.167.169.244/3210.167.169.244 – 10.167.169.24410.167.169.244
11810.167.169.245/3210.167.169.245 – 10.167.169.24510.167.169.245
11910.167.169.246/3210.167.169.246 – 10.167.169.24610.167.169.246
12010.167.169.247/3210.167.169.247 – 10.167.169.24710.167.169.247
12110.167.169.248/3210.167.169.248 – 10.167.169.24810.167.169.248
12210.167.169.249/3210.167.169.249 – 10.167.169.24910.167.169.249
12310.167.169.250/3210.167.169.250 – 10.167.169.25010.167.169.250
12410.167.169.251/3210.167.169.251 – 10.167.169.25110.167.169.251
12510.167.169.252/3210.167.169.252 – 10.167.169.25210.167.169.252
12610.167.169.253/3210.167.169.253 – 10.167.169.25310.167.169.253
12710.167.169.254/3210.167.169.254 – 10.167.169.25410.167.169.254
12810.167.169.255/3210.167.169.255 – 10.167.169.25510.167.169.255
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 →