📝 The IP Toolkit Blog

Networking, explained simply

Subnetting, CIDR, IPv6 and the concepts behind every calculator on this site.

All IPv6 Networking Subnetting

IPv6 for People Who Know IPv4

No more running out of addresses. A quick tour of IPv6 notation, prefixes and the :: shortcut.

CIDR aggregates, VLSM subdivides. Here is how the two fit together in real network design.

What a subnet mask really does, how to read CIDR notation, and how to split a network without the headache.