What is an IP address?
An IP (Internet Protocol) address is a unique numerical identifier assigned to every device connected to a computer network that uses the Internet Protocol to communicate. It works like a digital license plate: it allows data sent over the internet to reach exactly the right device.
Types of IP addresses
There are two main versions in use:
- IPv4: The most common format, made up of four groups of numbers separated by dots (e.g. 192.168.1.1). It allows up to 4.3 billion unique addresses.
- IPv6: The modern format, designed to address the shortage of IPv4. It uses hexadecimal groups separated by colons (e.g. 2001:0db8:85a3::8a2e:0370:7334). It allows a virtually unlimited number of addresses.
Public IP vs Private IP
Your public IP is the one the outside world sees: it is assigned by your internet service provider (ISP) and is unique on the internet. Your private IP is the one your router assigns to each device within your local network (computer, phone, tablet...).
Why is it important to know your IP?
Knowing your public IP allows you to:
- Verify if your VPN or proxy is working correctly and hiding your real location.
- Set up servers, network games or applications that require remote access.
- Diagnose connectivity issues or geographic blocks.
- Detect if your address has changed (relevant for dynamic connections).
In short, your IP is the gateway to the internet. Knowing and actively managing it is the first step to protecting your online privacy.
Want to take your security to the next level? Discover how to hide your IP address and browse completely privately.