VPN Detector — Is Your VPN Working?
Instantly check if your VPN is active and working correctly. This tool tests your public IP, ISP, WebRTC leaks, and DNS status to detect whether you are protected.
How Does VPN Detection Work?
This VPN detection tool performs multiple checks to determine if your internet connection is routed through a VPN. It examines your public IP address, compares your ISP name against a database of known VPN providers and datacenter hosts, checks for WebRTC IP leaks that can bypass your VPN, and verifies your DNS resolver status.
What We Check
- Public IP & ISP — Your visible IP address and the Internet Service Provider associated with it. VPN users typically show the VPN provider or a datacenter ISP.
- VPN Provider Match — We compare your ISP/organization name against 50+ known VPN providers (NordVPN, ExpressVPN, Surfshark, etc.) and datacenter hosting companies.
- WebRTC Leak Check — WebRTC can reveal your real IP address even when using a VPN. We test for this common leak vector.
- DNS Status — Your DNS resolver can reveal whether DNS requests are going through your VPN or leaking to your ISP's DNS servers.
Why Check If Your VPN Is Working?
Simply connecting to a VPN does not guarantee complete protection. Common issues include WebRTC leaks that expose your real IP, DNS leaks that reveal your browsing history to your ISP, and kill switch failures. Running regular VPN detection tests ensures your privacy is intact and your VPN is functioning as expected.
What Does "Protected" Mean?
A "Protected" status means your public IP is associated with a known VPN provider or datacenter, no WebRTC leaks were detected, and your DNS appears to be routed correctly. "Not Protected" means your connection appears to be using a residential ISP without VPN indicators. "Leak Detected" means a VPN is partially working but some data is leaking.
Tips for Better VPN Privacy
- Enable your VPN's kill switch feature to prevent leaks during disconnections
- Disable WebRTC in your browser settings or use a browser extension to block WebRTC leaks
- Use your VPN provider's DNS servers instead of third-party DNS
- Test your VPN regularly using tools like this one
- Keep your VPN client updated to the latest version
Frequently Asked Questions
How does this VPN detector work?
It checks your public IP address and ISP name against a database of 50+ known VPN providers and datacenter hosts. It also tests for WebRTC IP leaks and DNS resolver status to give you a complete picture of your VPN protection.
Is this VPN detection test accurate?
This test detects most major VPN providers by ISP/organization name matching. Some smaller or self-hosted VPNs may not be detected. The WebRTC and DNS leak checks are highly accurate.
What is a WebRTC leak?
WebRTC (Web Real-Time Communication) is a browser technology for peer-to-peer connections. It can sometimes reveal your real IP address even when using a VPN, bypassing the VPN tunnel entirely.
Why does it say "Not Protected" when my VPN is on?
Your VPN provider may not be in our database, or your VPN may be using a residential IP that looks like a normal connection. The tool checks ISP names — if your VPN uses an unlisted provider, it may not be detected.
Does this tool store my IP address?
No. All checks run entirely in your browser. Your IP is fetched from third-party APIs (ipinfo.io) but we never see, store, or log it. The results exist only on your screen.
How can I fix a WebRTC leak?
In Firefox, go to about:config and set media.peerconnection.enabled to false. In Chrome, install a WebRTC blocking extension like WebRTC Leak Prevent. Most VPN apps also have a WebRTC leak protection setting.
What is the difference between VPN detected and datacenter detected?
VPN detected means your ISP matches a known VPN provider name. Datacenter detected means your IP belongs to a cloud hosting provider (AWS, DigitalOcean, etc.), which often indicates a VPN, proxy, or server — not a residential connection.