Network Tools
IP Subnet Calculator
Calculate IPv4 subnet details from an IP address and CIDR prefix.
192.168.1.0Network
192.168.1.255Broadcast
255.255.255.0Subnet mask
Subnet details will appear here.
Supports IPv4 CIDR prefixes /0 through /32.
CIDR subnetting
The prefix length determines how many address bits belong to the network. The remaining bits form host addresses.
/31 and /32 networks
A /31 is commonly used for point-to-point links where both addresses are usable. A /32 identifies one single host address.