U-Star IP

Check My IP Address

Check your public IP address instantly with one click — no software needed — for remote access, firewall setup, and network debugging.

Your Current Public IP

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Checking network connection0%
  • Checking network connection
  • Looking up public IP address
  • Analyzing location data
  • Collecting ISP & environment info

3-Line Summary

  • 1See your real public IP address at the top of the screen the moment you connect.
  • 2Analyze IPv4, IPv6 availability, country, and region information in real time.
  • 3View ISP, operating system, browser, and other connection details in one place.

What Is My IP Address?

Your IP address is the identifier your smartphone, computer, or router uses on the internet — like a phone number on a vast global network. Every device needs a unique address to send and receive data, and that address is called an IP (Internet Protocol) address. The IP shown on this site is your globally unique public IP address.

The Key Difference Between Public IP and Private IP

A public IP is assigned directly by your ISP (such as SK Telecom, KT, or LG U+) to your modem or router and is unique worldwide. A private IP is a virtual address your router assigns to devices on your local network (family phones, laptops, smart TVs, etc.) to tell them apart. Examples like 192.168.0.1 or 192.168.1.1 are typical private IPs used to access router settings, and they cannot be reached directly from the public internet.

Comparing IPv4 and IPv6 Address Systems

Today's internet uses two standards: 32-bit IPv4 and 128-bit IPv6. IPv4 is written as numbers only, like 211.234.x.x, and faces address exhaustion. IPv6 was developed to solve this and uses a hexadecimal format such as 2001:0db8::ff00:42:8329, providing a virtually unlimited supply of addresses.

Why Your Public IP Changes When You Use a VPN

When you turn on a VPN (Virtual Private Network), all traffic from your device is encrypted and routed through a VPN server before reaching its destination. Websites then collect the VPN server's public IP instead of yours, so the IP, location, and ISP information visible from outside immediately reflect the VPN server.

When You Often Need to Check Your IP

Checking your public IP is essential when setting up port forwarding for a web server or NAS, registering your home IP on a company firewall for remote work, or inviting friends to a multiplayer game server such as Minecraft or Palworld. It is also widely used to verify that a VPN is working and routing traffic through a virtual IP.

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Frequently Asked Questions (FAQ)

An IP address alone does not directly expose your real name, phone number, or home address. However, it can reveal your country, approximate city or region, and ISP. Hackers may also use it for targeted DDoS attacks or port scanning, so avoid sharing your public IP with strangers or untrusted communities.
Visit a site like U-Star IP in your browser to see your public IP. To view your device's private IP, run ipconfig in Windows Command Prompt, or ifconfig or ip a on Mac/Linux terminals. On mobile, your private IP in the 192.168.x.x range appears in Wi-Fi settings.
If your ISP IP appears even with VPN enabled, the connection may not have completed properly, or a DNS leak or WebRTC leak may be exposing your real IP. Try fully restarting the VPN app and tightening browser security settings before checking again.
On mobile data, your phone gets a separate mobile public IP through your carrier's network (SK Telecom, KT, LG U+). On home Wi-Fi, you share the public IP assigned to your router's modem. The two environments therefore show completely different IP addresses.

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