An IP address (Internet Protocol address) is a unique numerical label assigned to every device connected to a computer network. Think of it as your device's mailing address on the internet - it tells other computers where to send information so it reaches you.
How IP Addresses Work
When you visit a website, your device sends a request that includes your IP address. The website's server uses this address to send the webpage back to you. Without IP addresses, the internet simply wouldn't function - there would be no way for data to find its destination.
Every time you:
- Load a webpage
- Send an email
- Stream a video
- Play an online game
- Use any internet-connected app
Your IP address is being used to route that data to and from your device.
What Does an IP Address Look Like?
There are two types of IP addresses in use today:
IPv4 Addresses
The original format, still the most common. IPv4 addresses consist of four numbers separated by dots, with each number ranging from 0 to 255.
8.8.8.8
172.217.14.206
IPv6 Addresses
The newer format, created because we're running out of IPv4 addresses. IPv6 uses eight groups of hexadecimal numbers separated by colons.
2607:f8b0:4004:800::200e
Public vs Private IP Addresses
There's an important distinction between the two types of IP addresses you encounter:
| Public IP | Private IP |
|---|---|
| Assigned by your ISP | Assigned by your router |
| Visible to websites you visit | Only visible on your local network |
| Unique across the entire internet | Can be reused in different networks |
| Example: 203.45.67.89 | Example: 192.168.1.5 |
Quick Check
You can see your public IP address right now by visiting our homepage. Your private IP can be found in your device's network settings.
What Your IP Address Reveals
Your IP address can reveal more about you than you might expect:
- Geographic location - Usually accurate to your city or region
- Internet Service Provider - The company providing your internet
- Organization - If you're on a business or university network
- Connection type - Residential, mobile, data center, etc.
However, your IP address does NOT directly reveal:
- Your exact street address
- Your name or identity
- Your browsing history
- Your personal information
Privacy Note
While websites can see your approximate location from your IP, only your ISP knows your exact address. Law enforcement would need a court order to get that information from your ISP.
Dynamic vs Static IP Addresses
Dynamic IP Addresses
Most home internet connections use dynamic IPs. Your ISP assigns you an IP address from a pool, and it may change periodically - when your router restarts, when your DHCP lease expires, or at the ISP's discretion.
Static IP Addresses
A static IP never changes. Businesses often pay extra for static IPs because they need a consistent address for hosting servers, remote access, or security systems.
How to Find Your IP Address
There are several ways to find your IP address:
- Public IP: Visit WheresThatIP.com - we'll show it instantly
- Windows: Open Command Prompt and type
ipconfig - Mac: System Preferences → Network, or type
ifconfigin Terminal - iPhone/Android: Check your WiFi network settings
Why IP Addresses Matter for Privacy
Every website you visit logs your IP address. This means:
- Websites can roughly track where you're browsing from
- Your ISP can see every website you connect to
- Advertisers can use your IP for location-based targeting
- Your IP can be used to enforce regional content restrictions
If privacy concerns you, consider using a VPN service to mask your real IP address, or learn more about how to hide your IP.