Your device actually has two IP addresses at the same time — one visible to the entire internet and one that only your home network knows about. Understanding the difference between a public and private IP address explains why websites can reach you, but your neighbor can't ping your laptop directly.
What Is a Public IP Address?
A public IP address is the address your ISP (Internet Service Provider) assigns to your internet connection. Every time a website receives a request from your home, it sees this address — it's like a street address visible to the outside world.
All devices in your house — phone, laptop, smart TV, game console — share the same single public IP. Websites see one IP no matter how many devices are active behind your router. You can check your current public IP instantly with the MyDeviceScan IP Lookup tool.
What Is a Private IP Address?
A private IP address is assigned by your router to each device inside your home network. These addresses are invisible to the internet — they exist only within your local network and cannot be reached from outside without specific configuration like port forwarding.
Three IP ranges are permanently reserved for private use by IANA:
| Private Range | Total Addresses | Typical Use |
|---|---|---|
| 192.168.0.0 – 192.168.255.255 | 65,536 | Home routers (most common) |
| 10.0.0.0 – 10.255.255.255 | 16.7 million | Businesses & large networks |
| 172.16.0.0 – 172.31.255.255 | ~1 million | Medium-sized networks |
What Does 192.168 Mean?
If your phone shows an IP like 192.168.1.105, your router assigned it that private address on your local network. The 192.168 prefix is the most commonly used private range worldwide — virtually every home Wi-Fi router defaults to it.
Your router itself typically sits at 192.168.1.1 or 192.168.0.1 — that's why typing either address into a browser opens your router's admin panel.
Why Do You Have Two IP Addresses?
You have both a public and a private IP because your router uses NAT (Network Address Translation). Here's exactly how it works step by step:
- Your phone (private IP: 192.168.1.105) sends a request to a website.
- Your router intercepts the request and replaces the source with your public IP (e.g., 203.0.113.42).
- The website responds to 203.0.113.42 — your public IP.
- Your router looks up which device made the original request and forwards the reply back to 192.168.1.105.
NAT is why dozens of devices can share a single public IP. Without it, every device would need its own globally unique address — and IPv4 only has about 4 billion total, a supply that's been effectively exhausted.
Public IP vs Private IP: Side-by-Side
| Feature | Public IP | Private IP |
|---|---|---|
| Assigned by | Your ISP | Your router (DHCP) |
| Visible to | The entire internet | Only your local network |
| Shared? | One per connection, shared by all home devices | Unique per device on your network |
| Example | 203.0.113.42 | 192.168.1.105 |
| Changes? | Periodically (dynamic) or fixed (static) | Each time a device reconnects |
| Routable? | Yes — works across the internet | No — local network only |
How to Find Your Public and Private IP
Public IP: Use the IP Lookup tool — it detects your public IP and shows your ISP, approximate location, and ASN instantly.
Private IP on Windows: Open Command Prompt and run ipconfig. Find "IPv4 Address" under your Wi-Fi or Ethernet adapter.
Private IP on Mac/Linux: Open Terminal and run ifconfig | grep "inet " or check System Settings → Network.
Private IP on iPhone: Settings → Wi-Fi → tap your network name → IP Address field.
Private IP on Android: Settings → Wi-Fi → tap your network name → Advanced → IP address.
Does Your IP Reveal Your Location?
Your private IP reveals nothing — it never leaves your home network. Your public IP can expose your approximate city and ISP through IP geolocation databases, but not your street address. Getting your exact physical address from an IP requires a legal request to your ISP.
Use the IP Lookup tool to see exactly what location data your public IP exposes right now.
🔍 Check your IP now: MyDeviceScan's IP Lookup tool shows your public IP, approximate location, ISP, and ASN — instantly, no sign-up required.
Frequently Asked Questions
What is the difference between a public and private IP address?
A public IP address is assigned by your ISP and is visible to the entire internet — it identifies your connection to the outside world. A private IP (such as 192.168.x.x or 10.x.x.x) is assigned by your router to devices inside your home network and is never visible on the internet.
What does 192.168 mean on my IP address?
192.168.x.x is a private IP address range reserved for local networks. Your router assigns addresses in this range (e.g., 192.168.1.105) to devices connected to your home Wi-Fi or Ethernet. These addresses only work inside your home network — they cannot be reached from the internet.
Why do I have two IP addresses?
You have two IP addresses because your home has one public IP shared by all devices (assigned by your ISP) and each device also gets a private IP assigned by your router. When you browse the internet, your router uses NAT (Network Address Translation) to swap the private IP for the public IP and then route replies back to the right device.
What is NAT (Network Address Translation)?
NAT is the technology your router uses to let multiple devices share a single public IP. When your phone (private IP 192.168.1.105) requests a webpage, the router replaces that private address with your public IP before sending the request. When the response comes back to the public IP, the router knows which device to forward it to.
Can my private IP address reveal my location?
No. Private IP addresses like 192.168.x.x are invisible outside your home network and reveal nothing about your location. Your public IP can reveal your approximate city and ISP, but not your exact home address — only your ISP has that mapping, and only law enforcement can request it.