IP Subnet Calculator

Enter an IPv4 address and a prefix length to see the network it belongs to, the range of usable host addresses and the subnet mask.

Type a number and the answer appears straight away.

Your answer

Network192.168.1.128/26

Subnet mask
255.255.255.192
Broadcast address
192.168.1.191
Usable host range
192.168.1.129 - 192.168.1.190
Usable hosts
62
Total addresses
64
Wildcard mask
0.0.0.63

The math behind it: Subnet Calculator

addresses in a subnet = 2^(32 - prefix length)

The first address in a subnet identifies the network and the last is the broadcast address, so a /24 has 256 addresses but 254 usable hosts.

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