The tool answers one question with unusual clarity: what does the internet see at the network level when your browser connects? The results typically include your IP address, approximate geolocation down to zip code, ISP name, hostname, and a connection-security indicator all pulled from public IP registration databases and routing records, not from any sensor on your device, according to NordVPN.

Country-level accuracy is solid. City-level is where things get complicated. Mobile traffic often exits through regional carrier gateways, so the city shown can be off by tens or hundreds of miles from where the device actually is, per IPAddressLocation.net. A wrong city on a phone is a data quality issue, not a sign of anything broken. NordVPN itself acknowledges the limit: IP geolocation can only indicate a broad area, and no lookup tool is perfectly accurate, the company notes.

When a VPN is active, the tool reflects the exit node's registered location rather than the user's physical one. That's expected behavior. It also makes the tool a quick sanity check that the VPN is actually routing traffic through the right server.

Three results worth pausing on:

• Seeing your correct city is not confirmation that your location is "secure." It means one data point is visible, and coarse location regularly gets combined with other identifiers to build more precise profiles.
• Seeing a wrong city on a mobile connection is almost certainly normal.
• Seeing your ISP's DNS servers or your real IP address while a VPN is connected is a genuine problem, and the NordVPN tool alone won't catch it.

Masking the IP that NordVPN's tool reports is not the same as closing every path through which a browser session can leak location or identity signals. Several leak vectors work independently of the IP address your VPN presents to websites.

WebRTC, the browser protocol handling video and audio calls, can expose a device's local network addresses to websites during session setup bypassing the VPN tunnel entirely. Testing across Chrome, Firefox, Safari, and Edge found that every major browser leaks WebRTC information by default, ZeroToVPN reported in February 2026. A VPN that routes your visible IP through Amsterdam won't necessarily stop a website from seeing your local network address through this channel.

DNS leaks are the most common and easiest-to-detect vulnerability in VPN setups. ZeroToVPN's testing across dozens of providers found roughly 15 to 20% leak DNS queries on at least some servers, which means browsing activity can remain visible to an ISP even with a VPN running. IPv6 is a related problem: approximately 40% of tested providers showed IPv6 address leaks, with the real address visible alongside the masked one, the same research found.

Background processes compound the issue. Software update checkers, analytics services, browser extensions, and system-level applications can reach the internet outside the VPN tunnel, periodically sending real IP and device information regardless of what the main VPN app reports, ZeroToVPN documented. The main app shows a clean connection while other processes quietly leak.

Traffic correlation attacks and machine-learning traffic classification are real threats in certain contexts but belong in a different conversation. For everyday users checking their location exposure, WebRTC leaks and DNS leaks are the relevant surface area and both are straightforward to detect.

Any vendor-operated diagnostic has an obvious limitation: the vendor selling the product being tested has a financial interest in the results. Useful, yes. Sufficient on its own, no.

Independent evaluation found NordVPN's own leak testing platform clean and functional for IPv4, DNS, and WebRTC checks, but noted it occasionally misrepresents results when testing competing VPN services, ZeroToVPN concluded in March 2026. Use it as a secondary check when testing NordVPN specifically, not as the primary audit.

Conflicting results across tools are common and don't always signal a real problem. In one documented case, ipleak.net flagged what looked like an IPv6 leak for NordVPN; cross-referencing with ipv6leak.com showed it was a false positive, caused by ipleak.net's testing methodology and NordVPN's design choice not to support IPv6 tunneling at all, ZeroToVPN found. No single test gives the full picture. Combining the EFF's Cover Your Tracks, BrowserLeaks, and ipleak.net produces a substantially more reliable baseline than any one tool alone, Kahana noted.

A practical verification sequence:

1. Run NordVPN's tool with the VPN off. Note your IP, location, and ISP as a baseline.
2. Connect the VPN, run the tool again. Confirm the IP and location have shifted to the exit node.
3. Run BrowserLeaks and ipleak.net. Check for WebRTC leaks showing local addresses, and confirm DNS servers belong to the VPN, not the ISP.
4. Run EFF's Cover Your Tracks. Assess whether the browser fingerprint is still distinctive even with the VPN active.
5. Repeat after any VPN app update or server change. App patches can temporarily break tunnel integrity.

What's worth acting on versus what to ignore:

• City mismatch on mobile: almost certainly normal, carrier routing is the likely cause
• ISP's DNS servers appearing while VPN is active: real problem, worth fixing
• Real IPv4 or IPv6 address appearing on ipleak.net while VPN is connected: a genuine leak, not a false positive
• A "unique" fingerprint on Cover Your Tracks with VPN active: the browser is still identifiable regardless of IP masking

The same coarse signals this tool surfaces are part of a data infrastructure that regulators spent the past year treating as a serious civil rights issue, not just a compliance footnote.

In January 2025, the FTC finalized orders against data brokers Gravy Analytics and Mobilewalla for collecting and selling precise geolocation data without consumer consent including data tied to visits to medical facilities, places of worship, domestic abuse shelters, and political gatherings. Both companies were ordered to delete their historical location databases, the Hunton Privacy Blog reported. The Mobilewalla action was the first FTC enforcement specifically targeting location data harvested from real-time bidding ad exchanges the same infrastructure that serves ads on ordinary websites. Location data was being captured as a side effect of normal browsing, not through any deliberate opt-in, the same reporting confirmed.

California's attorney general launched an investigative sweep of the location data industry in March 2025, sending warning letters to advertising networks, mobile app providers, and data brokers. AG Rob Bonta stated that location data "can let anyone know if you visit a health clinic or hospital, and can identify your everyday habits and movements," framing coarse signals not as technical abstractions but as disclosures with personal consequences, Mondaq reported. The FTC's enforcement framework has since required thorough privacy programs, mandatory deletion of historical location data, and consent standards most consumers don't know exist, Holland & Knight noted.

The IP-level signal NordVPN's tool reveals is not the same as the precise GPS coordinates at the center of these cases. But coarse signals become precise ones when combined with device identifiers, browsing patterns, and third-party data exactly what the advertising infrastructure the FTC targeted was doing. Knowing what your connection broadcasts is the starting point for deciding how much of that combination to limit.

Start with NordVPN's checker to get a baseline. Then run BrowserLeaks and ipleak.net with the VPN active. If your real IP address appears, or the DNS servers shown belong to your ISP rather than your VPN provider, those are fix-now issues, not things to note and revisit. A browser fingerprint that still comes back as unique on Cover Your Tracks means IP masking alone isn't enough the browser itself is doing the identifying.

Google's IP Protection feature, currently in development for Chrome's Incognito mode, is designed to mask third-party IP tracking while deliberately preserving coarse metro-level location, with each masked US address expected to represent roughly 500,000 users, Google's Privacy Sandbox documentation shows. The direction of travel for the industry is not invisibility but controlled imprecision. NordVPN's tool shows where things stand today. The independent checks tell you how much of that signal is actually under control.