Subnetting Mastery
Master IP subnetting from basic CIDR notation to complex VLSM designs. Practice problems and real-world network design scenarios.
CIDR Notation Guide
Understand CIDR notation, how to read it, and how it replaced classful addressing.
5 min readSubnet Masks Explained
How subnet masks work at the binary level to separate network and host portions of an IP address.
6 min readVLSM Network Design
Design efficient networks using Variable-Length Subnet Masking to minimize address waste.
6 min readSupernetting & Route Aggregation
Learn how supernetting combines multiple smaller networks into a single route to reduce routing table size and improve network efficiency.
9 min readIPv4 Subnetting Practice Problems
Work through 10 real-world subnetting problems with step-by-step solutions covering address calculations, subnet sizing, and host ranges.
14 min readPrivate IP Ranges & RFC 1918
A complete reference to private IP address ranges, their intended uses, and how they interact with NAT, routing, and network design.
8 min read