IP Subnet Calculator
Calculate subnet masks, network ranges, CIDR notation, and IP address details.
/
About IP Subnet Calculator
Calculate IPv4 subnet details instantly. Enter any IP address and CIDR prefix length to get the network address, subnet mask, broadcast address, host range, and more.
Common CIDR values: /8 (Class A, 16M hosts), /16 (Class B, 65K hosts), /24 (Class C, 254 hosts), /32 (single host).