How Subnetting Works
Subnetting divides a network into smaller subnetworks. The subnet mask determines which portion of an IP address identifies the network vs. the host.
Frequently Asked Questions
What is CIDR notation? CIDR (Classless Inter-Domain Routing) uses /prefix to denote the number of network bits. /24 means 24 network bits and 8 host bits = 256 addresses.
Why do I lose 2 addresses? The first address is the network address and the last is the broadcast address. Neither can be assigned to a host.