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)10.232.149.128/26
network10.232.149.128/26
broadcast10.232.149.191
first host10.232.149.129
last host10.232.149.190
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.232.149.128/26
address00001010.11101000.10010101.10000000
subnet mask11111111.11111111.11111111.11000000
network00001010.11101000.10010101.10000000
broadcast00001010.11101000.10010101.10111111
green = network part, grey = host part
hex0x0ae89580
decimal183014784
reverse dns128.149.232.10.in-addr.arpa
ipv4-mapped::ffff:ae8:9580

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.232.149.128/3210.232.149.128 – 10.232.149.12810.232.149.128
210.232.149.129/3210.232.149.129 – 10.232.149.12910.232.149.129
310.232.149.130/3210.232.149.130 – 10.232.149.13010.232.149.130
410.232.149.131/3210.232.149.131 – 10.232.149.13110.232.149.131
510.232.149.132/3210.232.149.132 – 10.232.149.13210.232.149.132
610.232.149.133/3210.232.149.133 – 10.232.149.13310.232.149.133
710.232.149.134/3210.232.149.134 – 10.232.149.13410.232.149.134
810.232.149.135/3210.232.149.135 – 10.232.149.13510.232.149.135
910.232.149.136/3210.232.149.136 – 10.232.149.13610.232.149.136
1010.232.149.137/3210.232.149.137 – 10.232.149.13710.232.149.137
1110.232.149.138/3210.232.149.138 – 10.232.149.13810.232.149.138
1210.232.149.139/3210.232.149.139 – 10.232.149.13910.232.149.139
1310.232.149.140/3210.232.149.140 – 10.232.149.14010.232.149.140
1410.232.149.141/3210.232.149.141 – 10.232.149.14110.232.149.141
1510.232.149.142/3210.232.149.142 – 10.232.149.14210.232.149.142
1610.232.149.143/3210.232.149.143 – 10.232.149.14310.232.149.143
1710.232.149.144/3210.232.149.144 – 10.232.149.14410.232.149.144
1810.232.149.145/3210.232.149.145 – 10.232.149.14510.232.149.145
1910.232.149.146/3210.232.149.146 – 10.232.149.14610.232.149.146
2010.232.149.147/3210.232.149.147 – 10.232.149.14710.232.149.147
2110.232.149.148/3210.232.149.148 – 10.232.149.14810.232.149.148
2210.232.149.149/3210.232.149.149 – 10.232.149.14910.232.149.149
2310.232.149.150/3210.232.149.150 – 10.232.149.15010.232.149.150
2410.232.149.151/3210.232.149.151 – 10.232.149.15110.232.149.151
2510.232.149.152/3210.232.149.152 – 10.232.149.15210.232.149.152
2610.232.149.153/3210.232.149.153 – 10.232.149.15310.232.149.153
2710.232.149.154/3210.232.149.154 – 10.232.149.15410.232.149.154
2810.232.149.155/3210.232.149.155 – 10.232.149.15510.232.149.155
2910.232.149.156/3210.232.149.156 – 10.232.149.15610.232.149.156
3010.232.149.157/3210.232.149.157 – 10.232.149.15710.232.149.157
3110.232.149.158/3210.232.149.158 – 10.232.149.15810.232.149.158
3210.232.149.159/3210.232.149.159 – 10.232.149.15910.232.149.159
3310.232.149.160/3210.232.149.160 – 10.232.149.16010.232.149.160
3410.232.149.161/3210.232.149.161 – 10.232.149.16110.232.149.161
3510.232.149.162/3210.232.149.162 – 10.232.149.16210.232.149.162
3610.232.149.163/3210.232.149.163 – 10.232.149.16310.232.149.163
3710.232.149.164/3210.232.149.164 – 10.232.149.16410.232.149.164
3810.232.149.165/3210.232.149.165 – 10.232.149.16510.232.149.165
3910.232.149.166/3210.232.149.166 – 10.232.149.16610.232.149.166
4010.232.149.167/3210.232.149.167 – 10.232.149.16710.232.149.167
4110.232.149.168/3210.232.149.168 – 10.232.149.16810.232.149.168
4210.232.149.169/3210.232.149.169 – 10.232.149.16910.232.149.169
4310.232.149.170/3210.232.149.170 – 10.232.149.17010.232.149.170
4410.232.149.171/3210.232.149.171 – 10.232.149.17110.232.149.171
4510.232.149.172/3210.232.149.172 – 10.232.149.17210.232.149.172
4610.232.149.173/3210.232.149.173 – 10.232.149.17310.232.149.173
4710.232.149.174/3210.232.149.174 – 10.232.149.17410.232.149.174
4810.232.149.175/3210.232.149.175 – 10.232.149.17510.232.149.175
4910.232.149.176/3210.232.149.176 – 10.232.149.17610.232.149.176
5010.232.149.177/3210.232.149.177 – 10.232.149.17710.232.149.177
5110.232.149.178/3210.232.149.178 – 10.232.149.17810.232.149.178
5210.232.149.179/3210.232.149.179 – 10.232.149.17910.232.149.179
5310.232.149.180/3210.232.149.180 – 10.232.149.18010.232.149.180
5410.232.149.181/3210.232.149.181 – 10.232.149.18110.232.149.181
5510.232.149.182/3210.232.149.182 – 10.232.149.18210.232.149.182
5610.232.149.183/3210.232.149.183 – 10.232.149.18310.232.149.183
5710.232.149.184/3210.232.149.184 – 10.232.149.18410.232.149.184
5810.232.149.185/3210.232.149.185 – 10.232.149.18510.232.149.185
5910.232.149.186/3210.232.149.186 – 10.232.149.18610.232.149.186
6010.232.149.187/3210.232.149.187 – 10.232.149.18710.232.149.187
6110.232.149.188/3210.232.149.188 – 10.232.149.18810.232.149.188
6210.232.149.189/3210.232.149.189 – 10.232.149.18910.232.149.189
6310.232.149.190/3210.232.149.190 – 10.232.149.19010.232.149.190
6410.232.149.191/3210.232.149.191 – 10.232.149.19110.232.149.191
01 / table

IPv4 CIDR prefix table.

Click a prefix longer than your network to split it into subnets.

prefixsubnet maskaddresseshostsin your /26
/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-
/25255.255.255.128128126-
/26255.255.255.19264621
/27255.255.255.22432302 split →
/28255.255.255.24016144 split →
/29255.255.255.248868 split →
/30255.255.255.2524216 split →
/31255.255.255.2542232 split →
/32255.255.255.2551164 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 →