CIDR / 掩码 / 广播地址 / 可用主机数
Subnetting divides a large IP network into smaller subnetworks. It's used to improve network performance, security, and address management.
CIDR (Classless Inter-Domain Routing) notation like /24 specifies the number of bits used for the network portion. /24 means the first 24 bits are the network, leaving 8 bits for hosts (254 usable addresses).
Yes, it shows network address, broadcast address, first/last usable IP, total hosts, subnet mask, and wildcard mask.