NETWORK NOTES
Clear guides to subnetting and network planning
Understand an IPv4 subnet, one boundary at a time. →
A practical guide to CIDR prefixes, masks, host ranges, and the /31 and /32 exceptions.
Plan with VLSM. Merge without adding addresses. →
Allocate different subnet sizes, recognize overlap, and understand exact CIDR aggregation.
IPv6 prefixes, without the oversized guesswork. →
Read compressed addresses, count a prefix exactly, and split an IPv6 allocation into subnets.