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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)10.76.131.128/26
network10.76.131.128/26
broadcast10.76.131.191
first host10.76.131.129
last host10.76.131.190
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.76.131.128/26
address00001010.01001100.10000011.10000000
subnet mask11111111.11111111.11111111.11000000
network00001010.01001100.10000011.10000000
broadcast00001010.01001100.10000011.10111111
green = network part, grey = host part
hex0x0a4c8380
decimal172786560
reverse dns128.131.76.10.in-addr.arpa
ipv4-mapped::ffff:a4c:8380

/26 split into /32 · 64 subnets

close ×
#networkhost rangebroadcast
110.76.131.128/3210.76.131.128 – 10.76.131.12810.76.131.128
210.76.131.129/3210.76.131.129 – 10.76.131.12910.76.131.129
310.76.131.130/3210.76.131.130 – 10.76.131.13010.76.131.130
410.76.131.131/3210.76.131.131 – 10.76.131.13110.76.131.131
510.76.131.132/3210.76.131.132 – 10.76.131.13210.76.131.132
610.76.131.133/3210.76.131.133 – 10.76.131.13310.76.131.133
710.76.131.134/3210.76.131.134 – 10.76.131.13410.76.131.134
810.76.131.135/3210.76.131.135 – 10.76.131.13510.76.131.135
910.76.131.136/3210.76.131.136 – 10.76.131.13610.76.131.136
1010.76.131.137/3210.76.131.137 – 10.76.131.13710.76.131.137
1110.76.131.138/3210.76.131.138 – 10.76.131.13810.76.131.138
1210.76.131.139/3210.76.131.139 – 10.76.131.13910.76.131.139
1310.76.131.140/3210.76.131.140 – 10.76.131.14010.76.131.140
1410.76.131.141/3210.76.131.141 – 10.76.131.14110.76.131.141
1510.76.131.142/3210.76.131.142 – 10.76.131.14210.76.131.142
1610.76.131.143/3210.76.131.143 – 10.76.131.14310.76.131.143
1710.76.131.144/3210.76.131.144 – 10.76.131.14410.76.131.144
1810.76.131.145/3210.76.131.145 – 10.76.131.14510.76.131.145
1910.76.131.146/3210.76.131.146 – 10.76.131.14610.76.131.146
2010.76.131.147/3210.76.131.147 – 10.76.131.14710.76.131.147
2110.76.131.148/3210.76.131.148 – 10.76.131.14810.76.131.148
2210.76.131.149/3210.76.131.149 – 10.76.131.14910.76.131.149
2310.76.131.150/3210.76.131.150 – 10.76.131.15010.76.131.150
2410.76.131.151/3210.76.131.151 – 10.76.131.15110.76.131.151
2510.76.131.152/3210.76.131.152 – 10.76.131.15210.76.131.152
2610.76.131.153/3210.76.131.153 – 10.76.131.15310.76.131.153
2710.76.131.154/3210.76.131.154 – 10.76.131.15410.76.131.154
2810.76.131.155/3210.76.131.155 – 10.76.131.15510.76.131.155
2910.76.131.156/3210.76.131.156 – 10.76.131.15610.76.131.156
3010.76.131.157/3210.76.131.157 – 10.76.131.15710.76.131.157
3110.76.131.158/3210.76.131.158 – 10.76.131.15810.76.131.158
3210.76.131.159/3210.76.131.159 – 10.76.131.15910.76.131.159
3310.76.131.160/3210.76.131.160 – 10.76.131.16010.76.131.160
3410.76.131.161/3210.76.131.161 – 10.76.131.16110.76.131.161
3510.76.131.162/3210.76.131.162 – 10.76.131.16210.76.131.162
3610.76.131.163/3210.76.131.163 – 10.76.131.16310.76.131.163
3710.76.131.164/3210.76.131.164 – 10.76.131.16410.76.131.164
3810.76.131.165/3210.76.131.165 – 10.76.131.16510.76.131.165
3910.76.131.166/3210.76.131.166 – 10.76.131.16610.76.131.166
4010.76.131.167/3210.76.131.167 – 10.76.131.16710.76.131.167
4110.76.131.168/3210.76.131.168 – 10.76.131.16810.76.131.168
4210.76.131.169/3210.76.131.169 – 10.76.131.16910.76.131.169
4310.76.131.170/3210.76.131.170 – 10.76.131.17010.76.131.170
4410.76.131.171/3210.76.131.171 – 10.76.131.17110.76.131.171
4510.76.131.172/3210.76.131.172 – 10.76.131.17210.76.131.172
4610.76.131.173/3210.76.131.173 – 10.76.131.17310.76.131.173
4710.76.131.174/3210.76.131.174 – 10.76.131.17410.76.131.174
4810.76.131.175/3210.76.131.175 – 10.76.131.17510.76.131.175
4910.76.131.176/3210.76.131.176 – 10.76.131.17610.76.131.176
5010.76.131.177/3210.76.131.177 – 10.76.131.17710.76.131.177
5110.76.131.178/3210.76.131.178 – 10.76.131.17810.76.131.178
5210.76.131.179/3210.76.131.179 – 10.76.131.17910.76.131.179
5310.76.131.180/3210.76.131.180 – 10.76.131.18010.76.131.180
5410.76.131.181/3210.76.131.181 – 10.76.131.18110.76.131.181
5510.76.131.182/3210.76.131.182 – 10.76.131.18210.76.131.182
5610.76.131.183/3210.76.131.183 – 10.76.131.18310.76.131.183
5710.76.131.184/3210.76.131.184 – 10.76.131.18410.76.131.184
5810.76.131.185/3210.76.131.185 – 10.76.131.18510.76.131.185
5910.76.131.186/3210.76.131.186 – 10.76.131.18610.76.131.186
6010.76.131.187/3210.76.131.187 – 10.76.131.18710.76.131.187
6110.76.131.188/3210.76.131.188 – 10.76.131.18810.76.131.188
6210.76.131.189/3210.76.131.189 – 10.76.131.18910.76.131.189
6310.76.131.190/3210.76.131.190 – 10.76.131.19010.76.131.190
6410.76.131.191/3210.76.131.191 – 10.76.131.19110.76.131.191
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 →