# IP Address Classes: A, B, C, D and E Explained

**URL:** <https://forum.networklessons.com/t/ip-address-classes-a-b-c-d-and-e-explained/58844>\
**Category:** Lessons Discussion\
**Created:** [September 16, 2026, 12:17pm UTC](https://forum.networklessons.com/t/ip-address-classes-a-b-c-d-and-e-explained/58844 "2026-09-16T12:17:44Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ReneMolenaar](https://cdn-forum.networklessons.com/user_avatar/forum.networklessons.com/renemolenaar/32/488_2.png) [@ReneMolenaar](https://forum.networklessons.com/u/ReneMolenaar)\
**Post date:** [September 16, 2026, 12:17pm UTC](https://forum.networklessons.com/t/ip-address-classes-a-b-c-d-and-e-explained/58844/1 "2026-09-16T12:17:44Z")

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This topic is to discuss the following lesson:

> **[IP Address Classes: A, B, C, D and E Explained](https://networklessons.com/subnetting/ip-address-classes-a-b-c-d-and-e-explained)**
>
> Classful addressing splits IPv4 space into five classes: A, B, C for unicast hosts, D for multicast groups, and E reserved for experiments.