A VPN app can say “Connected” while still failing silently. The only reliable way to confirm a VPN is working is to check what the internet actually sees.
This guide explains the correct way to verify a VPN — without relying on misleading “VPN detected / not detected” labels.
If you’re in a hurry, use our tool: VPN Status Check. It automatically compares your current IP with the previous one seen on your device.
What does it mean for a VPN to “work”?
When a VPN is working, your internet traffic is routed through a VPN server. As a result:
- Websites see a different public IP address
- Your network owner (ISP / ASN) often changes
- Your apparent location may change (but this is approximate)
The most important signal is the first one: did your public IP change?
How to check if your VPN is working (the right way)
1) Check whether your public IP changes
This is the strongest and most reliable test.
- Turn your VPN off
- Note your public IP
- Turn your VPN on and refresh
- If the IP changes: your VPN is routing traffic correctly
- If the IP does not change: the VPN may be inactive or bypassed
Our VPN Status Check tool does this automatically by comparing your current IP with the previous one seen on your device.
2) Compare ISP and ASN (network identity)
A VPN often changes not just your IP, but the network behind it.
- ISP: the company that owns the network
- ASN: a unique network identifier
With VPN off, you usually see your home ISP or mobile carrier. With VPN on, you may see a hosting or VPN network.
3) Run a WebRTC exposure check
Some browsers can expose additional IP addresses via WebRTC. In modern browsers, these are often hidden — which is good.
A WebRTC check is a secondary signal. The primary confirmation remains whether your public IP changes.
Why “VPN detected” labels are unreliable
Many websites claim to detect VPNs, but they usually rely on IP reputation databases.
These databases are incomplete and slow to update. A VPN can be working perfectly even if it is not labeled as a VPN.
Common reasons your VPN appears not to work
- Split tunneling: your browser bypasses the VPN
- Residential VPN exits: IP looks like a normal ISP
- IPv6 not tunneled: some traffic bypasses the VPN
- New or rotated IPs: reputation data lags behind
Best practice: compare VPN off vs VPN on
Ignore detection labels. Compare your connection before and after enabling the VPN.
Start here: Run VPN Status Check
If your VPN works but is not flagged, that’s often a good thing. Learn more in: VPN Not Detected — What It Really Means.