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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)10.167.94.128/26
network10.167.94.128/26
broadcast10.167.94.191
first host10.167.94.129
last host10.167.94.190
subnet mask255.255.255.192
wildcard0.0.0.63
addresses64
usable hosts62
classA
ipcalc 10.167.94.128/26
address00001010.10100111.01011110.10000000
subnet mask11111111.11111111.11111111.11000000
network00001010.10100111.01011110.10000000
broadcast00001010.10100111.01011110.10111111
green = network part, grey = host part
hex0x0aa75e80
decimal178740864
reverse dns128.94.167.10.in-addr.arpa
ipv4-mapped::ffff:aa7:5e80

/26 split into /31 · 32 subnets

close ×
#networkhost rangebroadcast
110.167.94.128/3110.167.94.128 – 10.167.94.12910.167.94.129
210.167.94.130/3110.167.94.130 – 10.167.94.13110.167.94.131
310.167.94.132/3110.167.94.132 – 10.167.94.13310.167.94.133
410.167.94.134/3110.167.94.134 – 10.167.94.13510.167.94.135
510.167.94.136/3110.167.94.136 – 10.167.94.13710.167.94.137
610.167.94.138/3110.167.94.138 – 10.167.94.13910.167.94.139
710.167.94.140/3110.167.94.140 – 10.167.94.14110.167.94.141
810.167.94.142/3110.167.94.142 – 10.167.94.14310.167.94.143
910.167.94.144/3110.167.94.144 – 10.167.94.14510.167.94.145
1010.167.94.146/3110.167.94.146 – 10.167.94.14710.167.94.147
1110.167.94.148/3110.167.94.148 – 10.167.94.14910.167.94.149
1210.167.94.150/3110.167.94.150 – 10.167.94.15110.167.94.151
1310.167.94.152/3110.167.94.152 – 10.167.94.15310.167.94.153
1410.167.94.154/3110.167.94.154 – 10.167.94.15510.167.94.155
1510.167.94.156/3110.167.94.156 – 10.167.94.15710.167.94.157
1610.167.94.158/3110.167.94.158 – 10.167.94.15910.167.94.159
1710.167.94.160/3110.167.94.160 – 10.167.94.16110.167.94.161
1810.167.94.162/3110.167.94.162 – 10.167.94.16310.167.94.163
1910.167.94.164/3110.167.94.164 – 10.167.94.16510.167.94.165
2010.167.94.166/3110.167.94.166 – 10.167.94.16710.167.94.167
2110.167.94.168/3110.167.94.168 – 10.167.94.16910.167.94.169
2210.167.94.170/3110.167.94.170 – 10.167.94.17110.167.94.171
2310.167.94.172/3110.167.94.172 – 10.167.94.17310.167.94.173
2410.167.94.174/3110.167.94.174 – 10.167.94.17510.167.94.175
2510.167.94.176/3110.167.94.176 – 10.167.94.17710.167.94.177
2610.167.94.178/3110.167.94.178 – 10.167.94.17910.167.94.179
2710.167.94.180/3110.167.94.180 – 10.167.94.18110.167.94.181
2810.167.94.182/3110.167.94.182 – 10.167.94.18310.167.94.183
2910.167.94.184/3110.167.94.184 – 10.167.94.18510.167.94.185
3010.167.94.186/3110.167.94.186 – 10.167.94.18710.167.94.187
3110.167.94.188/3110.167.94.188 – 10.167.94.18910.167.94.189
3210.167.94.190/3110.167.94.190 – 10.167.94.19110.167.94.191
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 →