> For the complete documentation index, see [llms.txt](https://docs.arkannis.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.arkannis.net/networking/general-networking/ip-classes-and-subnet-masks.md).

# IP Classes and Subnet Masks

![](/files/qDqEobXBIPsPsJswDYKl)