Subnetting works both for public and private IP addresses. But in order to be able to access the Internet, NAT (Network Address Translation) is used.

Note that aside from NAT, a router does not change anything in an IP address. It just uses a routing table to know where to forward data across subnets.

Subnetting works both for public and private IP addresses. But in order to be able to access the Internet from a private address, NAT/NAPT (Network Address/Port Translation) is used.

Note that aside from NAT, a router does not change anything in an IP address. It just uses a routing table to know where to forward data across subnets.

Subnetting works both for public and private IP addresses. But in order to be able to access the Internet, NAT (Network Address Translation) is used.

Note that aside from NAT, a router does not change anything in an IP address. It just uses a routing table to know where to forward data across subnets.

Here you can check some useful resources that will help you better understand what it's all about.

First, the basics of subnetting (with IPv4 subnet cheat sheet included). Then, this article about network routing. And this beginner-friendly post about NAT.

Subnetting works both for public and private IP addresses. But in order to be able to access the Internet, NAT (Network Address Translation) is used.

Note that aside from NAT, a router does not change anything in an IP address. It just uses a routing table to know where to forward data across subnets.