🌐 Understanding Classful Addressing – The Foundation of IP Networking Before CIDR and VLSM, networks were divided into fixed classes: 🔹 Class A – Large networks 🔹 Class B – Medium organizations 🔹 Class C – Small networks 🔹 Class D – Multicast 🔹 Class E – Reserved In early networking days, IP addresses were grouped into these 5 fixed classes — but this approach had limitations 💬 𝗪𝗮𝗻𝘁 𝘁𝗼 𝗺𝗮𝘀𝘁𝗲𝗿 𝗿𝗲𝗮𝗹-𝘄𝗼𝗿𝗹𝗱 𝗻𝗲𝘁𝘄𝗼𝗿𝗸 𝘁𝗿𝗼𝘂𝗯𝗹𝗲𝘀𝗵𝗼𝗼𝘁𝗶𝗻𝗴 𝘄𝗶𝘁𝗵 𝗵𝗮𝗻𝗱𝘀