IPv4 Subnet Calculator

Enter an IPv4 address and CIDR prefix to calculate its subnet.

LIVE CALCULATION

IPv4 address

CIDR prefix

192.168.0.0/24

Network address192.168.0.0

Broadcast address192.168.0.255

Subnet mask255.255.255.0

Wildcard mask0.0.0.255

First usable address192.168.0.1

Last usable address192.168.0.254

TOTAL ADDRESSES256

USABLE HOSTS254

PREFIX LENGTH/24

Subnet tree

Split a network into smaller, equal-sized subnets.