# The Anatomy of an IPv4 Address (Part I)

DevFeed: [The Anatomy of an IPv4 Address (Part I)](<https://devfeed.tech/articles/the-anatomy-of-an-ipv4-address-part-i-18202.md>)

Original publisher: [Read original article](<https://newsletter.francofernando.com/p/the-anatomy-of-an-ipv4-address>)

Author: Franco Fernando

Published: 2026-07-25T10:00:35Z

Content type: tutorial

Language: en

Sources: [The Polymathic Engineer](<https://devfeed.tech/sources/the-polymathic-engineer.md>)

Topics: [Network](<https://devfeed.tech/topics/network.md>)

Tags: [ipv4](<https://devfeed.tech/tags/ipv4.md>), [network](<https://devfeed.tech/tags/network.md>)

## AI overview

This tutorial explains how an IPv4 address is structured, what a subnet mask does, and how a device determines which network it belongs to.

## Source excerpt

How an IPv4 address is built, what a subnet mask does, and how a device determines the network it belongs to.