# IP Address

*noun*

say it: **“EYE-PEE uh-DRES”** **/ˌaɪ ˈpiː əˈdrɛs/**

The number that identifies one computer on a network, like a street address for messages.

## What is **IP Address**?

**IP Address** — The number that finds one computer on a network, like a street address for messages. `127.0.0.1` always means "this computer", which is why `localhost` reaches the app running on your own machine.

## In a sentence

- “localhost is just a name for the **IP address** 127.0.0.1, your own computer.”

Level: Novice · [More Web Development terms at this level](https://www.ask-codey.com/glossary?category=web-development&level=1)

Updated: October 28, 2026

Source: https://www.ask-codey.com/glossary/ip-address