Classless Inter-Domain Routing (CIDR pronounced "cider" or / ˈsɪdər / SID-ər) is a method for allocating IP addresses for IP routing. The Internet Engineering Task Force introduced CIDR in 1993 to replace …

Classless Inter-Domain Routing (CIDR) allows network routers to route data packets to the respective device based on the indicated subnet. Instead of classifying the IP address based on classes, …

CIDR stands for Classless Inter-Domain Routing, and refers to the standard of dividing the entire IP address space into smaller networks of variable size.

CIDR is the short for Classless Inter-Domain Routing, an IP addressing scheme that replaces the older system based on classes A, B, and C. A single IP address can be used to designate many unique IP …

Jan 10, 2026 · CIDR (Classless Inter Domain Routing) is a method of IP address allocation and routing that allows more efficient use of IP addresses. Unlike traditional class-based addressing, CIDR …

Sep 4, 2025 · CIDR notation is a modern, efficient way of representing IP addresses. Unlike outdated classful addressing, CIDR allows you to size networks exactly to your needs, minimize wasted …

Oct 23, 2025 · CIDR is a tool that maximizes network routing efficiency via subnetting, supernetting, and a simplified IP address notation. Classless inter-domain routing (CIDR) is a method of internet …