Subnet calculator

Network, hosts and masks for IPv4 and IPv6. Runs in your browser: nothing you type is sent to us.

Address and prefix

Network: 192.168.1.0
Broadcast: 192.168.1.255
First host: 192.168.1.1
Last host: 192.168.1.254
Mask: 255.255.255.0
Wildcard: 0.0.0.255
Usable hosts: 254
Type: Private (RFC 1918)