3 Ways to Check for IP Leaks When Using a VPN (Important!)
Online privacy is now a primary need in the digital era. Many people use VPN (Virtual Private Network) to protect their identity on the internet, especially when accessing public networks or geo-restricted sites. However, did you know that VPNs are not always 100% secure? Sometimes, there is IP leak (IP leak) which makes your location and identity still traceable.
This article will discuss it in full how to check IP leaks when using a VPN, why this is important, as well as easy steps to ensure your privacy remains protected.
What is an IP Leak?
Before getting into how to check it, we need to first understand what it is IP leak.
IP leak occurs when the original IP address (given by your internet provider) can still be seen even though you have used a VPN. This means that your internet connection does not completely pass through the VPN server as it should. This can occur due to configuration errors, bugs in the application, or leaks from certain features such as DNS and WebRTC.
Types of IP Leaks
| Type of Leak | Short Explanation | Impact |
|---|---|---|
| DNS Leak | DNS requests are still sent to the ISP server, not the VPN server. | Location and internet activity can be tracked. |
| WebRTC Leak | The browser leaks the real IP via the WebRTC protocol. | The real IP address is revealed even in private tabs. |
| IPv6 Leak | VPN does not support IPv6 so IP version 6 remains visible. | User identity can still be recognized. |
According to reports from Security.org, about 25% of free VPN users experience IP leaks without realizing it. This means, even though you feel safe, your identity could still be exposed on the internet.
Why is checking for IP leaks important?
VPNs are designed to hide the original IP address by replacing it with an IP from another server. However, if a leak occurs, then the main benefit of VPN is lost. Here are some reasons why Check for IP leaks very important:
Maintaining Anonymity Online
If your real IP is visible, websites, advertisements, or third parties can track your location and activities.Prevent Tracking by ISPs and Governments
ISPs can still monitor your data traffic if the connection is not fully encrypted.Protecting Personal Data
Sensitive data such as location, device, and browsing habits can be exposed if the IP is leaked.Avoiding Area Blocking (Geo-blocking)
If your original IP is detected as coming from a certain country, some streaming services can immediately limit your access.
Based on reports KompasTekno, there are many cases where free VPN users are unaware that their IP address remains detected by services like Netflix or Google. Therefore, checking IP leaks should be carried out regularly.
3 Ways to Check for IP Leaks When Using a VPN
Here are three effective methods you can use to ensure your VPN is working properly and not leaking your IP.
1. Using a Public IP Test Site
The simplest way is to visit the IP checking site.
Steps:
Turn off VPN first.
Note down your public IP address via sites like “WhatIsMyIP” or “IPinfo”.Enable VPN and connect to an overseas server.
For example, choose the United States or Singapore server.Revisit the IP checking site.
Compare the results. If the IP address changes according to the location of the VPN server, then there is no leak.
However, if the IP is still the same as before using VPN, it means there is an IP leak.
Additional tips:
Use several different sites for more accurate results, as some sites may cache previous IPs.
2. Test DNS Leak Manually
DNS leak is the one that occurs most often. When you visit a website, a DNS request is usually sent to your ISP server to translate the domain name into an IP address. A good VPN will redirect these requests to their own DNS servers.
How to check:
Activate your VPN.
Open the site DNS leak test (like DNSleaktest).
Run “Extended Test” to see the list of DNS servers used.
If the results show the name of your ISP, it means a DNS leak has occurred.
Quick solution:
Activate the feature DNS Leak Protection in a VPN app or use a public DNS server like Cloudflare (1.1.1.1) or Google DNS (8.8.8.8).
3. Check for WebRTC and IPv6 Leaks in the Browser
Besides DNS, modern browsers like Chrome and Firefox have the feature WebRTC (Web Real-Time Communication) which allows direct communication between devices (e.g. for video calls). Unfortunately, this feature can also leak the real IP even though the VPN is active.
How to test for WebRTC leak:
Make sure VPN is active.
Visit the WebRTC checker site.
If the site displays a real public IP (not the VPN’s IP), there is a leak.
For IPv6 leaks, the steps are similar:
Go to the IPv6 test site.
See if the ISP’s IP version 6 is still visible.
If so, disable IPv6 support in the operating system or enable the feature IPv6 leak protection on VPN.
According to TechRadar, about 40% of VPN leaks come from WebRTC active in the browser. Therefore, users are advised to disable WebRTC manually in browser settings.
Tips to Avoid IP Leaks in the Future
Here are some practical tips to ensure VPN remains safe to use:
Use a premium VPN that has DNS and IPv6 leak protection features.
Free VPNs often lack advanced security features.Activate “Kill Switch”.
This feature automatically disconnects the internet connection if the VPN is disconnected.Update the VPN application regularly.
Updates usually bring bug fixes and encryption improvements.Use a privacy-friendly browser, like Brave or Firefox with additional privacy extensions.
Perform IP leak tests regularly.
Ideally every time you switch servers or reinstall the VPN.
Comparison Table: Secure vs Unsecure VPN
| Security Features | Secure VPN | Unsafe VPN |
|---|---|---|
| Data encryption | AES-256 Bit | Weak or not encrypted |
| DNS Leak Protection | There is | There isn’t any |
| Kill Switch | Active | Not available |
| IPv6 Support | Fully supported | Not supported |
| Security audits | Open / independent | Not transparent |
| IP leak | There isn’t any | Often occur |
FAQ about How to Check for IP Leaks
1. Can all VPNs experience IP leaks?
Yes. Even paid VPNs can leak if there are configuration errors or bugs in the application.
2. Are free VPNs safe from IP leaks?
Not always. According to reports from Comparitech, 8 out of 10 free VPNs suffer from DNS or WebRTC leaks.
3. How often do I need to check for IP leaks?
It’s best to do this every time you change VPN servers, change devices, or update the application.
4. What if I find a leak?
Turn off the VPN, re-enable the leak protection feature (DNS/IPv6), then retest. If it still leaks, consider changing VPN provider.
5. Is IP leak dangerous?
Yes, because it can reveal your real identity and location to third parties, websites, or even hackers.
Conclusion
Check IP leaks when using VPN is an important step to maintain your security and privacy in the digital world. By conducting regular tests — either through IP checking sites, DNS, or WebRTC — you can ensure the connection is truly anonymous.
Remember, not all VPNs have the same protection system. Choose a VPN with a good reputation, enable additional security features, and make sure you are always aware of the risk of data leaks. Because in the online world, Privacy is not just a right, but also a responsibility.
